./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 0e0057cc 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_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/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_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d8b9169d0d63d8238da177db4999afabb0efa6e97e1e7cd257e8474f76788f17 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:27:43,828 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:27:43,904 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-29 01:27:43,908 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:27:43,909 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:27:43,934 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:27:43,934 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:27:43,935 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:27:43,935 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:27:43,936 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:27:43,936 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:27:43,937 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:27:43,938 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:27:43,938 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:27:43,939 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:27:43,939 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:27:43,940 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:27:43,940 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:27:43,941 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:27:43,941 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:27:43,942 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:27:43,943 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:27:43,943 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:27:43,944 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:27:43,944 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:27:43,945 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:27:43,945 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:27:43,945 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:27:43,946 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:27:43,946 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:27:43,947 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:27:43,947 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:27:43,947 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:27:43,948 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:27:43,948 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:27:43,948 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:27:43,948 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:27:43,948 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:27:43,949 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:27:43,949 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_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d8b9169d0d63d8238da177db4999afabb0efa6e97e1e7cd257e8474f76788f17 [2023-11-29 01:27:44,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:27:44,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:27:44,182 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:27:44,183 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:27:44,184 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:27:44,185 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i [2023-11-29 01:27:47,062 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:27:47,458 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:27:47,459 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i [2023-11-29 01:27:47,486 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/data/c64a7c240/91d6624ee3844aba81c03cda6f0817f9/FLAG399b086f8 [2023-11-29 01:27:47,498 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/data/c64a7c240/91d6624ee3844aba81c03cda6f0817f9 [2023-11-29 01:27:47,500 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:27:47,501 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:27:47,503 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:27:47,503 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:27:47,507 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:27:47,508 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:27:47" (1/1) ... [2023-11-29 01:27:47,509 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73442cf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:27:47, skipping insertion in model container [2023-11-29 01:27:47,509 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:27:47" (1/1) ... [2023-11-29 01:27:47,594 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:27:47,811 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_b9d895a6-492e-4888-934e-2f00bdff6789/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i[4497,4510] [2023-11-29 01:27:47,818 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_b9d895a6-492e-4888-934e-2f00bdff6789/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i[4557,4570] [2023-11-29 01:27:48,833 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:48,834 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:48,835 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:48,836 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:48,838 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:48,857 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:48,858 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:48,861 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:48,861 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:48,865 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:48,866 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:48,867 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:48,867 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:49,416 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-29 01:27:49,418 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-29 01:27:49,419 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-29 01:27:49,421 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-29 01:27:49,423 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-29 01:27:49,424 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-29 01:27:49,425 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-29 01:27:49,426 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-29 01:27:49,427 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-29 01:27:49,428 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-29 01:27:49,658 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:49,665 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:49,744 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:49,745 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:49,745 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:49,745 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:49,746 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:49,746 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:49,746 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:49,747 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:49,747 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:49,748 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:49,748 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:49,748 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:49,749 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:49,751 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:49,752 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:49,752 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:49,752 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:49,756 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:49,756 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:49,766 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:49,767 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:49,768 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:49,783 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:27:49,822 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:27:49,837 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_b9d895a6-492e-4888-934e-2f00bdff6789/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i[4497,4510] [2023-11-29 01:27:49,838 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_b9d895a6-492e-4888-934e-2f00bdff6789/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i[4557,4570] [2023-11-29 01:27:49,887 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:49,887 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:49,888 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:49,889 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:49,889 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:49,897 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:49,898 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:49,899 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:49,900 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:49,901 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:49,901 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:49,902 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:49,902 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:49,941 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-29 01:27:49,942 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-29 01:27:49,943 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-29 01:27:49,944 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-29 01:27:49,946 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-29 01:27:49,946 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-29 01:27:49,947 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-29 01:27:49,948 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-29 01:27:49,948 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-29 01:27:49,949 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-29 01:27:49,990 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:49,995 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:50,003 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7771-7782] [2023-11-29 01:27:50,064 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:50,064 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:50,065 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:50,065 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:50,065 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:50,066 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:50,066 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:50,067 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:50,067 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:50,068 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:50,068 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:50,068 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:50,069 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:50,070 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:50,070 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:50,070 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:50,070 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:50,073 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:50,074 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:50,081 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:50,082 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:50,083 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:27:50,090 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:27:50,329 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:27:50,329 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:27:50,329 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:27:50,330 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:27:50,330 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:27:50,330 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:27:50,330 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:27:50,331 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:27:50,331 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:27:50,331 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:27:50,331 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:27:50,332 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:27:50,332 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:27:50,332 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:27:50,332 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:27:50,342 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:27:50,342 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:27:50 WrapperNode [2023-11-29 01:27:50,343 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:27:50,344 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:27:50,344 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:27:50,345 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:27:50,354 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:27:50" (1/1) ... [2023-11-29 01:27:50,460 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:27:50" (1/1) ... [2023-11-29 01:27:50,556 INFO L138 Inliner]: procedures = 696, calls = 1880, calls flagged for inlining = 60, calls inlined = 19, statements flattened = 1165 [2023-11-29 01:27:50,556 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:27:50,557 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:27:50,558 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:27:50,558 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:27:50,573 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:27:50" (1/1) ... [2023-11-29 01:27:50,574 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:27:50" (1/1) ... [2023-11-29 01:27:50,589 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:27:50" (1/1) ... [2023-11-29 01:27:50,725 INFO L175 MemorySlicer]: Split 373 memory accesses to 7 slices as follows [2, 236, 24, 92, 9, 7, 3]. 63 percent of accesses are in the largest equivalence class. The 249 initializations are split as follows [2, 236, 5, 0, 1, 2, 3]. The 23 writes are split as follows [0, 0, 8, 13, 1, 1, 0]. [2023-11-29 01:27:50,726 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:27:50" (1/1) ... [2023-11-29 01:27:50,726 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:27:50" (1/1) ... [2023-11-29 01:27:50,778 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:27:50" (1/1) ... [2023-11-29 01:27:50,788 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:27:50" (1/1) ... [2023-11-29 01:27:50,803 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:27:50" (1/1) ... [2023-11-29 01:27:50,813 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:27:50" (1/1) ... [2023-11-29 01:27:50,829 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:27:50,831 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:27:50,831 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:27:50,831 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:27:50,832 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:27:50" (1/1) ... [2023-11-29 01:27:50,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:27:50,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:27:50,868 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:27:50,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:27:50,912 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2023-11-29 01:27:50,912 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2023-11-29 01:27:50,912 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_init_dynamic [2023-11-29 01:27:50,913 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_init_dynamic [2023-11-29 01:27:50,913 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-11-29 01:27:50,913 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-11-29 01:27:50,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 01:27:50,914 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-11-29 01:27:50,914 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-11-29 01:27:50,914 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-29 01:27:50,914 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-29 01:27:50,914 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-29 01:27:50,915 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-29 01:27:50,915 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2023-11-29 01:27:50,915 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2023-11-29 01:27:50,915 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2023-11-29 01:27:50,916 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2023-11-29 01:27:50,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 01:27:50,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 01:27:50,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 01:27:50,917 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 01:27:50,917 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 01:27:50,917 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-29 01:27:50,917 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-29 01:27:50,918 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-29 01:27:50,918 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-29 01:27:50,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 01:27:50,918 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 01:27:50,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 01:27:50,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:27:50,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 01:27:50,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 01:27:50,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 01:27:50,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-29 01:27:50,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-29 01:27:50,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-29 01:27:50,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-29 01:27:50,921 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2023-11-29 01:27:50,921 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2023-11-29 01:27:50,921 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-29 01:27:50,921 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-29 01:27:50,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:27:50,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:27:50,922 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-29 01:27:50,922 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-29 01:27:50,923 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-29 01:27:50,923 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-29 01:27:50,923 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-29 01:27:50,923 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-29 01:27:50,924 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2023-11-29 01:27:50,924 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2023-11-29 01:27:50,924 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2023-11-29 01:27:50,924 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2023-11-29 01:27:50,924 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2023-11-29 01:27:50,925 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2023-11-29 01:27:50,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2023-11-29 01:27:50,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2023-11-29 01:27:50,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2023-11-29 01:27:50,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2023-11-29 01:27:50,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#4 [2023-11-29 01:27:50,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#5 [2023-11-29 01:27:50,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#6 [2023-11-29 01:27:50,927 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2023-11-29 01:27:50,942 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2023-11-29 01:27:50,942 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2023-11-29 01:27:50,942 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2023-11-29 01:27:50,943 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#4 [2023-11-29 01:27:50,943 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#5 [2023-11-29 01:27:50,943 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#6 [2023-11-29 01:27:50,943 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 01:27:50,943 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 01:27:50,943 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-29 01:27:50,943 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-29 01:27:50,944 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2023-11-29 01:27:50,944 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2023-11-29 01:27:50,944 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2023-11-29 01:27:50,944 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2023-11-29 01:27:50,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 01:27:50,944 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-29 01:27:50,944 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-29 01:27:50,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 01:27:50,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 01:27:50,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 01:27:50,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-29 01:27:50,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-29 01:27:50,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-29 01:27:50,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-29 01:27:50,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-29 01:27:50,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-29 01:27:50,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-29 01:27:50,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-29 01:27:50,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-29 01:27:50,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-29 01:27:50,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-29 01:27:50,947 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2023-11-29 01:27:50,947 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2023-11-29 01:27:50,947 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-29 01:27:50,947 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-29 01:27:50,947 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-29 01:27:50,947 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-29 01:27:50,948 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-29 01:27:50,948 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-29 01:27:50,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 01:27:50,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 01:27:50,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 01:27:50,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 01:27:50,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 01:27:50,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-29 01:27:50,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-29 01:27:50,949 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-11-29 01:27:50,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-11-29 01:27:50,949 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_set_at [2023-11-29 01:27:50,949 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_set_at [2023-11-29 01:27:50,949 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2023-11-29 01:27:50,950 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2023-11-29 01:27:50,950 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-29 01:27:50,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-29 01:27:50,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:27:50,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 01:27:50,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 01:27:50,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 01:27:50,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 01:27:50,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-29 01:27:50,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-29 01:27:51,352 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:27:51,356 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:27:52,935 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:27:53,105 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:27:53,105 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-29 01:27:53,106 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:27:53 BoogieIcfgContainer [2023-11-29 01:27:53,107 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:27:53,110 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:27:53,110 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:27:53,114 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:27:53,114 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:27:47" (1/3) ... [2023-11-29 01:27:53,115 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c58f3eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:27:53, skipping insertion in model container [2023-11-29 01:27:53,115 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:27:50" (2/3) ... [2023-11-29 01:27:53,116 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c58f3eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:27:53, skipping insertion in model container [2023-11-29 01:27:53,116 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:27:53" (3/3) ... [2023-11-29 01:27:53,117 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_push_harness.i [2023-11-29 01:27:53,161 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:27:53,161 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 01:27:53,231 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:27:53,238 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;@2af2b550, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:27:53,238 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 01:27:53,245 INFO L276 IsEmpty]: Start isEmpty. Operand has 507 states, 276 states have (on average 1.2789855072463767) internal successors, (353), 279 states have internal predecessors, (353), 196 states have call successors, (196), 33 states have call predecessors, (196), 33 states have return successors, (196), 196 states have call predecessors, (196), 196 states have call successors, (196) [2023-11-29 01:27:53,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-11-29 01:27:53,267 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:27:53,267 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 3, 3, 3, 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] [2023-11-29 01:27:53,268 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:27:53,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:27:53,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1894711921, now seen corresponding path program 1 times [2023-11-29 01:27:53,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:27:53,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664885966] [2023-11-29 01:27:53,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:27:53,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:27:53,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:54,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:27:54,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:54,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:27:54,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:54,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 01:27:54,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:54,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 01:27:54,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:54,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 01:27:54,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:54,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 01:27:54,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:54,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 01:27:54,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:54,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 01:27:54,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:54,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 01:27:54,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:54,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 01:27:54,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:54,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 01:27:54,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:54,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 01:27:54,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:54,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:27:54,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:54,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 01:27:54,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:54,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-29 01:27:54,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:54,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-29 01:27:54,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:54,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 01:27:54,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:54,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-29 01:27:54,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:54,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-29 01:27:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:54,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-29 01:27:54,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:54,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-29 01:27:54,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:54,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-29 01:27:54,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:54,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-29 01:27:54,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:54,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-29 01:27:54,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:54,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-29 01:27:54,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:54,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-29 01:27:54,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:54,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-11-29 01:27:54,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:54,546 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2023-11-29 01:27:54,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:27:54,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664885966] [2023-11-29 01:27:54,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664885966] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:27:54,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352379643] [2023-11-29 01:27:54,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:27:54,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:27:54,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:27:54,550 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:27:54,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:27:55,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:55,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 2428 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:27:55,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:27:55,394 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2023-11-29 01:27:55,394 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:27:55,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352379643] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:27:55,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:27:55,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-11-29 01:27:55,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428793706] [2023-11-29 01:27:55,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:27:55,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:27:55,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:27:55,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:27:55,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:27:55,437 INFO L87 Difference]: Start difference. First operand has 507 states, 276 states have (on average 1.2789855072463767) internal successors, (353), 279 states have internal predecessors, (353), 196 states have call successors, (196), 33 states have call predecessors, (196), 33 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 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) [2023-11-29 01:27:56,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:27:56,032 INFO L93 Difference]: Finished difference Result 1007 states and 1630 transitions. [2023-11-29 01:27:56,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:27:56,035 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 158 [2023-11-29 01:27:56,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:27:56,054 INFO L225 Difference]: With dead ends: 1007 [2023-11-29 01:27:56,054 INFO L226 Difference]: Without dead ends: 506 [2023-11-29 01:27:56,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:27:56,068 INFO L413 NwaCegarLoop]: 688 mSDtfsCounter, 83 mSDsluCounter, 1921 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 2609 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:27:56,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 2609 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:27:56,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2023-11-29 01:27:56,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 506. [2023-11-29 01:27:56,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 275 states have (on average 1.2545454545454546) internal successors, (345), 278 states have internal predecessors, (345), 196 states have call successors, (196), 33 states have call predecessors, (196), 33 states have return successors, (204), 194 states have call predecessors, (204), 194 states have call successors, (204) [2023-11-29 01:27:56,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 745 transitions. [2023-11-29 01:27:56,174 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 745 transitions. Word has length 158 [2023-11-29 01:27:56,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:27:56,175 INFO L495 AbstractCegarLoop]: Abstraction has 506 states and 745 transitions. [2023-11-29 01:27:56,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) [2023-11-29 01:27:56,175 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 745 transitions. [2023-11-29 01:27:56,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-11-29 01:27:56,180 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:27:56,180 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 4, 4, 4, 3, 3, 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] [2023-11-29 01:27:56,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:27:56,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 01:27:56,387 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:27:56,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:27:56,387 INFO L85 PathProgramCache]: Analyzing trace with hash -919883431, now seen corresponding path program 1 times [2023-11-29 01:27:56,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:27:56,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319085769] [2023-11-29 01:27:56,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:27:56,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:27:56,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:56,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:27:56,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:56,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:27:56,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:57,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 01:27:57,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:57,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 01:27:57,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:57,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 01:27:57,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:57,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 01:27:57,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:57,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 01:27:57,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:57,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 01:27:57,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:57,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 01:27:57,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:57,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 01:27:57,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:57,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:27:57,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:57,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 01:27:57,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:57,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 01:27:57,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:57,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:27:57,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:57,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-29 01:27:57,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:57,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-29 01:27:57,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:57,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 01:27:57,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:57,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-29 01:27:57,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:57,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 01:27:57,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:57,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-29 01:27:57,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:57,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-29 01:27:57,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:57,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-29 01:27:57,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:57,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-29 01:27:57,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:57,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-29 01:27:57,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:57,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-11-29 01:27:57,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:57,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-11-29 01:27:57,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:57,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-11-29 01:27:57,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:57,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-11-29 01:27:57,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:57,475 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2023-11-29 01:27:57,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:27:57,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319085769] [2023-11-29 01:27:57,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319085769] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:27:57,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169744144] [2023-11-29 01:27:57,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:27:57,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:27:57,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:27:57,478 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:27:57,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:27:58,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:58,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 2478 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:27:58,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:27:58,329 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2023-11-29 01:27:58,329 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:27:58,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169744144] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:27:58,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:27:58,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2023-11-29 01:27:58,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869480177] [2023-11-29 01:27:58,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:27:58,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:27:58,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:27:58,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:27:58,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:27:58,334 INFO L87 Difference]: Start difference. First operand 506 states and 745 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 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) [2023-11-29 01:27:59,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:27:59,333 INFO L93 Difference]: Finished difference Result 1004 states and 1520 transitions. [2023-11-29 01:27:59,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:27:59,334 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 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 166 [2023-11-29 01:27:59,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:27:59,342 INFO L225 Difference]: With dead ends: 1004 [2023-11-29 01:27:59,342 INFO L226 Difference]: Without dead ends: 527 [2023-11-29 01:27:59,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:27:59,347 INFO L413 NwaCegarLoop]: 669 mSDtfsCounter, 117 mSDsluCounter, 3100 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 3769 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:27:59,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 3769 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 01:27:59,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2023-11-29 01:27:59,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 525. [2023-11-29 01:27:59,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 291 states have (on average 1.261168384879725) internal successors, (367), 294 states have internal predecessors, (367), 198 states have call successors, (198), 33 states have call predecessors, (198), 34 states have return successors, (238), 197 states have call predecessors, (238), 196 states have call successors, (238) [2023-11-29 01:27:59,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 803 transitions. [2023-11-29 01:27:59,405 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 803 transitions. Word has length 166 [2023-11-29 01:27:59,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:27:59,406 INFO L495 AbstractCegarLoop]: Abstraction has 525 states and 803 transitions. [2023-11-29 01:27:59,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 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) [2023-11-29 01:27:59,407 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 803 transitions. [2023-11-29 01:27:59,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-29 01:27:59,411 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:27:59,411 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:27:59,421 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:27:59,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:27:59,612 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:27:59,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:27:59,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1727898148, now seen corresponding path program 1 times [2023-11-29 01:27:59,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:27:59,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018783253] [2023-11-29 01:27:59,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:27:59,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:27:59,711 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:27:59,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2063182307] [2023-11-29 01:27:59,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:27:59,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:27:59,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:27:59,713 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:27:59,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:28:00,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:28:00,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 2617 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 01:28:00,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:28:00,457 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2023-11-29 01:28:00,457 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:28:00,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:28:00,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018783253] [2023-11-29 01:28:00,458 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:28:00,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063182307] [2023-11-29 01:28:00,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063182307] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:28:00,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:28:00,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:28:00,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111439463] [2023-11-29 01:28:00,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:28:00,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:28:00,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:28:00,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:28:00,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:28:00,461 INFO L87 Difference]: Start difference. First operand 525 states and 803 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2023-11-29 01:28:00,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:28:00,873 INFO L93 Difference]: Finished difference Result 1027 states and 1591 transitions. [2023-11-29 01:28:00,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:28:00,874 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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 179 [2023-11-29 01:28:00,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:28:00,880 INFO L225 Difference]: With dead ends: 1027 [2023-11-29 01:28:00,880 INFO L226 Difference]: Without dead ends: 531 [2023-11-29 01:28:00,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:28:00,884 INFO L413 NwaCegarLoop]: 680 mSDtfsCounter, 102 mSDsluCounter, 2556 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 3236 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:28:00,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 3236 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:28:00,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2023-11-29 01:28:00,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 525. [2023-11-29 01:28:00,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 291 states have (on average 1.261168384879725) internal successors, (367), 294 states have internal predecessors, (367), 198 states have call successors, (198), 33 states have call predecessors, (198), 34 states have return successors, (238), 197 states have call predecessors, (238), 196 states have call successors, (238) [2023-11-29 01:28:00,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 803 transitions. [2023-11-29 01:28:00,922 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 803 transitions. Word has length 179 [2023-11-29 01:28:00,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:28:00,923 INFO L495 AbstractCegarLoop]: Abstraction has 525 states and 803 transitions. [2023-11-29 01:28:00,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2023-11-29 01:28:00,923 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 803 transitions. [2023-11-29 01:28:00,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-11-29 01:28:00,926 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:28:00,926 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 5, 5, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:28:00,936 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 01:28:01,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:01,127 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:28:01,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:01,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1948532863, now seen corresponding path program 1 times [2023-11-29 01:28:01,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:28:01,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944786802] [2023-11-29 01:28:01,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:01,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:28:01,217 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:28:01,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1369431440] [2023-11-29 01:28:01,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:01,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:01,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:28:01,219 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:28:01,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:28:01,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:28:01,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 2684 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 01:28:01,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:28:01,921 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2023-11-29 01:28:01,921 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:28:01,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:28:01,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944786802] [2023-11-29 01:28:01,922 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:28:01,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369431440] [2023-11-29 01:28:01,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369431440] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:28:01,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:28:01,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 01:28:01,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390554316] [2023-11-29 01:28:01,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:28:01,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:28:01,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:28:01,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:28:01,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:28:01,925 INFO L87 Difference]: Start difference. First operand 525 states and 803 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 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) [2023-11-29 01:28:02,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:28:02,849 INFO L93 Difference]: Finished difference Result 1053 states and 1629 transitions. [2023-11-29 01:28:02,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:28:02,850 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 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 195 [2023-11-29 01:28:02,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:28:02,857 INFO L225 Difference]: With dead ends: 1053 [2023-11-29 01:28:02,857 INFO L226 Difference]: Without dead ends: 557 [2023-11-29 01:28:02,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:28:02,863 INFO L413 NwaCegarLoop]: 644 mSDtfsCounter, 153 mSDsluCounter, 3632 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 4276 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:28:02,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 4276 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 01:28:02,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2023-11-29 01:28:02,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 525. [2023-11-29 01:28:02,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 291 states have (on average 1.261168384879725) internal successors, (367), 294 states have internal predecessors, (367), 198 states have call successors, (198), 33 states have call predecessors, (198), 34 states have return successors, (238), 197 states have call predecessors, (238), 196 states have call successors, (238) [2023-11-29 01:28:02,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 803 transitions. [2023-11-29 01:28:02,910 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 803 transitions. Word has length 195 [2023-11-29 01:28:02,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:28:02,911 INFO L495 AbstractCegarLoop]: Abstraction has 525 states and 803 transitions. [2023-11-29 01:28:02,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 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) [2023-11-29 01:28:02,911 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 803 transitions. [2023-11-29 01:28:02,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-11-29 01:28:02,915 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:28:02,915 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:28:02,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 01:28:03,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:03,119 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:28:03,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:03,119 INFO L85 PathProgramCache]: Analyzing trace with hash 937335370, now seen corresponding path program 2 times [2023-11-29 01:28:03,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:28:03,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623044037] [2023-11-29 01:28:03,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:03,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:28:03,210 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:28:03,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [175081664] [2023-11-29 01:28:03,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:28:03,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:03,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:28:03,212 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:28:03,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:28:04,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:28:04,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:28:04,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 2823 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-29 01:28:04,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:28:04,314 INFO L349 Elim1Store]: treesize reduction 40, result has 50.6 percent of original size [2023-11-29 01:28:04,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 10 case distinctions, treesize of input 56 treesize of output 74 [2023-11-29 01:28:04,835 WARN L667 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-11-29 01:28:04,947 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2023-11-29 01:28:04,947 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:28:04,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:28:04,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623044037] [2023-11-29 01:28:04,948 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:28:04,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175081664] [2023-11-29 01:28:04,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175081664] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:28:04,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:28:04,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:28:04,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972299736] [2023-11-29 01:28:04,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:28:04,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:28:04,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:28:04,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:28:04,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:28:04,951 INFO L87 Difference]: Start difference. First operand 525 states and 803 transitions. Second operand has 7 states, 5 states have (on average 16.2) internal successors, (81), 7 states have internal predecessors, (81), 5 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 5 states have call successors, (29) [2023-11-29 01:28:05,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:28:05,542 INFO L93 Difference]: Finished difference Result 1015 states and 1562 transitions. [2023-11-29 01:28:05,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:28:05,543 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 16.2) internal successors, (81), 7 states have internal predecessors, (81), 5 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 5 states have call successors, (29) Word has length 208 [2023-11-29 01:28:05,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:28:05,550 INFO L225 Difference]: With dead ends: 1015 [2023-11-29 01:28:05,551 INFO L226 Difference]: Without dead ends: 527 [2023-11-29 01:28:05,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:28:05,556 INFO L413 NwaCegarLoop]: 685 mSDtfsCounter, 133 mSDsluCounter, 2575 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 3260 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:28:05,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 3260 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:28:05,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2023-11-29 01:28:05,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 527. [2023-11-29 01:28:05,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 292 states have (on average 1.2602739726027397) internal successors, (368), 296 states have internal predecessors, (368), 198 states have call successors, (198), 33 states have call predecessors, (198), 35 states have return successors, (246), 197 states have call predecessors, (246), 196 states have call successors, (246) [2023-11-29 01:28:05,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 812 transitions. [2023-11-29 01:28:05,621 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 812 transitions. Word has length 208 [2023-11-29 01:28:05,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:28:05,622 INFO L495 AbstractCegarLoop]: Abstraction has 527 states and 812 transitions. [2023-11-29 01:28:05,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 16.2) internal successors, (81), 7 states have internal predecessors, (81), 5 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 5 states have call successors, (29) [2023-11-29 01:28:05,623 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 812 transitions. [2023-11-29 01:28:05,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-11-29 01:28:05,627 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:28:05,627 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:28:05,639 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 01:28:05,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:05,828 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:28:05,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:05,829 INFO L85 PathProgramCache]: Analyzing trace with hash 446506338, now seen corresponding path program 1 times [2023-11-29 01:28:05,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:28:05,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368455720] [2023-11-29 01:28:05,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:05,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:28:05,934 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:28:05,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [67352173] [2023-11-29 01:28:05,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:05,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:05,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:28:05,935 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:28:05,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 01:28:06,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:28:06,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 2873 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 01:28:06,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:28:06,615 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 217 proven. 0 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2023-11-29 01:28:06,616 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:28:06,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:28:06,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368455720] [2023-11-29 01:28:06,616 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:28:06,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67352173] [2023-11-29 01:28:06,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67352173] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:28:06,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:28:06,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 01:28:06,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238533332] [2023-11-29 01:28:06,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:28:06,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:28:06,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:28:06,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:28:06,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:28:06,619 INFO L87 Difference]: Start difference. First operand 527 states and 812 transitions. Second operand has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 8 states have internal predecessors, (87), 5 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) [2023-11-29 01:28:07,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:28:07,568 INFO L93 Difference]: Finished difference Result 1033 states and 1600 transitions. [2023-11-29 01:28:07,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:28:07,568 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 8 states have internal predecessors, (87), 5 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) Word has length 216 [2023-11-29 01:28:07,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:28:07,573 INFO L225 Difference]: With dead ends: 1033 [2023-11-29 01:28:07,573 INFO L226 Difference]: Without dead ends: 543 [2023-11-29 01:28:07,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:28:07,576 INFO L413 NwaCegarLoop]: 667 mSDtfsCounter, 166 mSDsluCounter, 3686 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 4353 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:28:07,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 4353 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 01:28:07,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2023-11-29 01:28:07,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 541. [2023-11-29 01:28:07,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 305 states have (on average 1.2655737704918033) internal successors, (386), 308 states have internal predecessors, (386), 199 states have call successors, (199), 33 states have call predecessors, (199), 35 states have return successors, (247), 199 states have call predecessors, (247), 197 states have call successors, (247) [2023-11-29 01:28:07,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 832 transitions. [2023-11-29 01:28:07,615 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 832 transitions. Word has length 216 [2023-11-29 01:28:07,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:28:07,615 INFO L495 AbstractCegarLoop]: Abstraction has 541 states and 832 transitions. [2023-11-29 01:28:07,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 8 states have internal predecessors, (87), 5 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) [2023-11-29 01:28:07,615 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 832 transitions. [2023-11-29 01:28:07,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2023-11-29 01:28:07,618 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:28:07,619 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:28:07,628 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 01:28:07,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:07,820 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:28:07,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:07,820 INFO L85 PathProgramCache]: Analyzing trace with hash 616227217, now seen corresponding path program 2 times [2023-11-29 01:28:07,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:28:07,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296066362] [2023-11-29 01:28:07,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:07,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:28:07,931 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:28:07,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1846386531] [2023-11-29 01:28:07,931 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:28:07,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:07,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:28:07,933 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:28:07,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 01:28:08,975 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:28:08,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:28:08,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 3012 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 01:28:08,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:28:09,063 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 211 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-11-29 01:28:09,063 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:28:09,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:28:09,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296066362] [2023-11-29 01:28:09,063 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:28:09,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846386531] [2023-11-29 01:28:09,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846386531] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:28:09,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:28:09,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:28:09,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564719270] [2023-11-29 01:28:09,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:28:09,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:28:09,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:28:09,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:28:09,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:28:09,065 INFO L87 Difference]: Start difference. First operand 541 states and 832 transitions. Second operand has 7 states, 6 states have (on average 14.0) internal successors, (84), 7 states have internal predecessors, (84), 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) [2023-11-29 01:28:09,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:28:09,597 INFO L93 Difference]: Finished difference Result 1051 states and 1631 transitions. [2023-11-29 01:28:09,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:28:09,598 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 7 states have internal predecessors, (84), 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 229 [2023-11-29 01:28:09,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:28:09,604 INFO L225 Difference]: With dead ends: 1051 [2023-11-29 01:28:09,604 INFO L226 Difference]: Without dead ends: 547 [2023-11-29 01:28:09,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:28:09,608 INFO L413 NwaCegarLoop]: 678 mSDtfsCounter, 151 mSDsluCounter, 3152 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 3830 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:28:09,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 3830 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:28:09,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2023-11-29 01:28:09,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 541. [2023-11-29 01:28:09,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 305 states have (on average 1.2655737704918033) internal successors, (386), 308 states have internal predecessors, (386), 199 states have call successors, (199), 33 states have call predecessors, (199), 35 states have return successors, (247), 199 states have call predecessors, (247), 197 states have call successors, (247) [2023-11-29 01:28:09,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 832 transitions. [2023-11-29 01:28:09,683 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 832 transitions. Word has length 229 [2023-11-29 01:28:09,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:28:09,684 INFO L495 AbstractCegarLoop]: Abstraction has 541 states and 832 transitions. [2023-11-29 01:28:09,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 7 states have internal predecessors, (84), 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) [2023-11-29 01:28:09,684 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 832 transitions. [2023-11-29 01:28:09,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2023-11-29 01:28:09,688 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:28:09,689 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 7, 7, 4, 4, 4, 4, 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, 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] [2023-11-29 01:28:09,702 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 01:28:09,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:09,890 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:28:09,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:09,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1880186449, now seen corresponding path program 3 times [2023-11-29 01:28:09,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:28:09,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714312781] [2023-11-29 01:28:09,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:09,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:28:09,991 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:28:09,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [73066892] [2023-11-29 01:28:09,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:28:09,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:09,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:28:09,993 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:28:09,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 01:28:10,846 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 01:28:10,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:28:10,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 1877 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 01:28:10,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:28:10,903 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2023-11-29 01:28:10,903 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:28:10,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:28:10,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714312781] [2023-11-29 01:28:10,904 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:28:10,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73066892] [2023-11-29 01:28:10,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73066892] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:28:10,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:28:10,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:28:10,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622615195] [2023-11-29 01:28:10,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:28:10,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:28:10,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:28:10,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:28:10,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:28:10,907 INFO L87 Difference]: Start difference. First operand 541 states and 832 transitions. Second operand has 6 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 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) [2023-11-29 01:28:11,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:28:11,405 INFO L93 Difference]: Finished difference Result 1028 states and 1594 transitions. [2023-11-29 01:28:11,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:28:11,406 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 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 258 [2023-11-29 01:28:11,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:28:11,412 INFO L225 Difference]: With dead ends: 1028 [2023-11-29 01:28:11,412 INFO L226 Difference]: Without dead ends: 541 [2023-11-29 01:28:11,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:28:11,416 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 2 mSDsluCounter, 2549 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3210 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:28:11,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3210 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:28:11,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2023-11-29 01:28:11,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 541. [2023-11-29 01:28:11,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 305 states have (on average 1.2655737704918033) internal successors, (386), 308 states have internal predecessors, (386), 199 states have call successors, (199), 33 states have call predecessors, (199), 35 states have return successors, (246), 199 states have call predecessors, (246), 197 states have call successors, (246) [2023-11-29 01:28:11,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 831 transitions. [2023-11-29 01:28:11,466 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 831 transitions. Word has length 258 [2023-11-29 01:28:11,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:28:11,467 INFO L495 AbstractCegarLoop]: Abstraction has 541 states and 831 transitions. [2023-11-29 01:28:11,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 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) [2023-11-29 01:28:11,468 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 831 transitions. [2023-11-29 01:28:11,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2023-11-29 01:28:11,470 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:28:11,470 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1] [2023-11-29 01:28:11,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-29 01:28:11,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:11,675 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:28:11,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:11,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1885177014, now seen corresponding path program 4 times [2023-11-29 01:28:11,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:28:11,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301814369] [2023-11-29 01:28:11,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:11,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:28:11,777 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:28:11,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1232425361] [2023-11-29 01:28:11,778 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 01:28:11,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:11,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:28:11,779 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:28:11,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 01:28:12,317 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 01:28:12,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:28:12,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 01:28:12,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:28:12,397 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 254 proven. 0 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2023-11-29 01:28:12,397 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:28:12,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:28:12,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301814369] [2023-11-29 01:28:12,398 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:28:12,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232425361] [2023-11-29 01:28:12,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232425361] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:28:12,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:28:12,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 01:28:12,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943794541] [2023-11-29 01:28:12,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:28:12,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:28:12,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:28:12,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:28:12,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:28:12,401 INFO L87 Difference]: Start difference. First operand 541 states and 831 transitions. Second operand has 8 states, 7 states have (on average 13.0) internal successors, (91), 8 states have internal predecessors, (91), 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) [2023-11-29 01:28:13,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:28:13,336 INFO L93 Difference]: Finished difference Result 1152 states and 1784 transitions. [2023-11-29 01:28:13,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:28:13,337 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.0) internal successors, (91), 8 states have internal predecessors, (91), 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 271 [2023-11-29 01:28:13,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:28:13,342 INFO L225 Difference]: With dead ends: 1152 [2023-11-29 01:28:13,343 INFO L226 Difference]: Without dead ends: 660 [2023-11-29 01:28:13,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:28:13,346 INFO L413 NwaCegarLoop]: 740 mSDtfsCounter, 122 mSDsluCounter, 4191 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 4931 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:28:13,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 4931 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 01:28:13,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2023-11-29 01:28:13,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 637. [2023-11-29 01:28:13,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 370 states have (on average 1.2891891891891891) internal successors, (477), 375 states have internal predecessors, (477), 228 states have call successors, (228), 34 states have call predecessors, (228), 37 states have return successors, (289), 227 states have call predecessors, (289), 226 states have call successors, (289) [2023-11-29 01:28:13,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 994 transitions. [2023-11-29 01:28:13,393 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 994 transitions. Word has length 271 [2023-11-29 01:28:13,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:28:13,393 INFO L495 AbstractCegarLoop]: Abstraction has 637 states and 994 transitions. [2023-11-29 01:28:13,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.0) internal successors, (91), 8 states have internal predecessors, (91), 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) [2023-11-29 01:28:13,393 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 994 transitions. [2023-11-29 01:28:13,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2023-11-29 01:28:13,395 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:28:13,395 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 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] [2023-11-29 01:28:13,403 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 01:28:13,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-29 01:28:13,596 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:28:13,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:13,597 INFO L85 PathProgramCache]: Analyzing trace with hash -540443049, now seen corresponding path program 1 times [2023-11-29 01:28:13,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:28:13,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022208072] [2023-11-29 01:28:13,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:13,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:28:13,689 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:28:13,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1573218140] [2023-11-29 01:28:13,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:13,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:13,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:28:13,691 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:28:13,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 01:28:14,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:28:14,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 3268 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 01:28:14,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:28:14,456 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 307 proven. 0 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2023-11-29 01:28:14,456 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:28:14,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:28:14,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022208072] [2023-11-29 01:28:14,457 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:28:14,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573218140] [2023-11-29 01:28:14,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573218140] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:28:14,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:28:14,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 01:28:14,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852337034] [2023-11-29 01:28:14,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:28:14,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:28:14,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:28:14,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:28:14,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:28:14,459 INFO L87 Difference]: Start difference. First operand 637 states and 994 transitions. Second operand has 9 states, 8 states have (on average 13.875) internal successors, (111), 9 states have internal predecessors, (111), 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) [2023-11-29 01:28:15,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:28:15,534 INFO L93 Difference]: Finished difference Result 1285 states and 2010 transitions. [2023-11-29 01:28:15,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:28:15,534 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 13.875) internal successors, (111), 9 states have internal predecessors, (111), 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 266 [2023-11-29 01:28:15,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:28:15,540 INFO L225 Difference]: With dead ends: 1285 [2023-11-29 01:28:15,541 INFO L226 Difference]: Without dead ends: 685 [2023-11-29 01:28:15,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:28:15,544 INFO L413 NwaCegarLoop]: 642 mSDtfsCounter, 202 mSDsluCounter, 4191 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 4833 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:28:15,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 4833 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 01:28:15,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2023-11-29 01:28:15,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 621. [2023-11-29 01:28:15,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 356 states have (on average 1.2865168539325842) internal successors, (458), 361 states have internal predecessors, (458), 227 states have call successors, (227), 34 states have call predecessors, (227), 36 states have return successors, (278), 225 states have call predecessors, (278), 225 states have call successors, (278) [2023-11-29 01:28:15,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 963 transitions. [2023-11-29 01:28:15,589 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 963 transitions. Word has length 266 [2023-11-29 01:28:15,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:28:15,590 INFO L495 AbstractCegarLoop]: Abstraction has 621 states and 963 transitions. [2023-11-29 01:28:15,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 13.875) internal successors, (111), 9 states have internal predecessors, (111), 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) [2023-11-29 01:28:15,590 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 963 transitions. [2023-11-29 01:28:15,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2023-11-29 01:28:15,592 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:28:15,592 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 7, 7, 6, 6, 6, 6, 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, 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] [2023-11-29 01:28:15,603 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 01:28:15,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 01:28:15,793 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:28:15,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:15,793 INFO L85 PathProgramCache]: Analyzing trace with hash 311978649, now seen corresponding path program 5 times [2023-11-29 01:28:15,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:28:15,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396322429] [2023-11-29 01:28:15,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:15,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:28:15,878 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:28:15,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [223433360] [2023-11-29 01:28:15,879 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 01:28:15,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:15,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:28:15,880 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:28:15,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 01:28:16,470 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:28:16,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:28:16,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 01:28:16,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:28:16,599 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2023-11-29 01:28:16,599 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:28:16,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:28:16,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396322429] [2023-11-29 01:28:16,600 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:28:16,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223433360] [2023-11-29 01:28:16,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223433360] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:28:16,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:28:16,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:28:16,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740828917] [2023-11-29 01:28:16,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:28:16,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:28:16,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:28:16,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:28:16,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:28:16,603 INFO L87 Difference]: Start difference. First operand 621 states and 963 transitions. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-29 01:28:19,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:28:20,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:28:20,116 INFO L93 Difference]: Finished difference Result 1265 states and 1986 transitions. [2023-11-29 01:28:20,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:28:20,117 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 284 [2023-11-29 01:28:20,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:28:20,123 INFO L225 Difference]: With dead ends: 1265 [2023-11-29 01:28:20,123 INFO L226 Difference]: Without dead ends: 673 [2023-11-29 01:28:20,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:28:20,128 INFO L413 NwaCegarLoop]: 702 mSDtfsCounter, 18 mSDsluCounter, 2594 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 3296 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:28:20,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 3296 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-29 01:28:20,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2023-11-29 01:28:20,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 637. [2023-11-29 01:28:20,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 372 states have (on average 1.2849462365591398) internal successors, (478), 377 states have internal predecessors, (478), 227 states have call successors, (227), 34 states have call predecessors, (227), 36 states have return successors, (278), 225 states have call predecessors, (278), 225 states have call successors, (278) [2023-11-29 01:28:20,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 983 transitions. [2023-11-29 01:28:20,174 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 983 transitions. Word has length 284 [2023-11-29 01:28:20,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:28:20,174 INFO L495 AbstractCegarLoop]: Abstraction has 637 states and 983 transitions. [2023-11-29 01:28:20,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-29 01:28:20,175 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 983 transitions. [2023-11-29 01:28:20,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2023-11-29 01:28:20,176 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:28:20,177 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 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, 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] [2023-11-29 01:28:20,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-29 01:28:20,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 01:28:20,377 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:28:20,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:20,378 INFO L85 PathProgramCache]: Analyzing trace with hash -693071187, now seen corresponding path program 1 times [2023-11-29 01:28:20,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:28:20,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523917498] [2023-11-29 01:28:20,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:20,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:28:20,478 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:28:20,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1139191961] [2023-11-29 01:28:20,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:20,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:20,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:28:20,480 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:28:20,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 01:28:21,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:28:21,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 3540 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 01:28:21,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:28:21,442 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 307 proven. 0 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2023-11-29 01:28:21,442 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:28:21,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:28:21,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523917498] [2023-11-29 01:28:21,443 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:28:21,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139191961] [2023-11-29 01:28:21,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139191961] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:28:21,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:28:21,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 01:28:21,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269402269] [2023-11-29 01:28:21,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:28:21,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:28:21,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:28:21,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:28:21,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:28:21,446 INFO L87 Difference]: Start difference. First operand 637 states and 983 transitions. Second operand has 8 states, 7 states have (on average 13.0) internal successors, (91), 8 states have internal predecessors, (91), 6 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (32), 5 states have call predecessors, (32), 6 states have call successors, (32) [2023-11-29 01:28:22,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:28:22,088 INFO L93 Difference]: Finished difference Result 1132 states and 1746 transitions. [2023-11-29 01:28:22,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:28:22,089 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.0) internal successors, (91), 8 states have internal predecessors, (91), 6 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (32), 5 states have call predecessors, (32), 6 states have call successors, (32) Word has length 292 [2023-11-29 01:28:22,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:28:22,095 INFO L225 Difference]: With dead ends: 1132 [2023-11-29 01:28:22,095 INFO L226 Difference]: Without dead ends: 538 [2023-11-29 01:28:22,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:28:22,101 INFO L413 NwaCegarLoop]: 672 mSDtfsCounter, 196 mSDsluCounter, 3741 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 4413 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:28:22,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 4413 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:28:22,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2023-11-29 01:28:22,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 536. [2023-11-29 01:28:22,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 301 states have (on average 1.2591362126245846) internal successors, (379), 305 states have internal predecessors, (379), 198 states have call successors, (198), 33 states have call predecessors, (198), 35 states have return successors, (239), 197 states have call predecessors, (239), 196 states have call successors, (239) [2023-11-29 01:28:22,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 816 transitions. [2023-11-29 01:28:22,148 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 816 transitions. Word has length 292 [2023-11-29 01:28:22,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:28:22,149 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 816 transitions. [2023-11-29 01:28:22,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.0) internal successors, (91), 8 states have internal predecessors, (91), 6 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (32), 5 states have call predecessors, (32), 6 states have call successors, (32) [2023-11-29 01:28:22,149 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 816 transitions. [2023-11-29 01:28:22,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2023-11-29 01:28:22,152 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:28:22,152 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:28:22,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 01:28:22,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:22,353 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:28:22,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:22,353 INFO L85 PathProgramCache]: Analyzing trace with hash 2103255765, now seen corresponding path program 1 times [2023-11-29 01:28:22,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:28:22,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028033454] [2023-11-29 01:28:22,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:22,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:28:22,455 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:28:22,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1152371872] [2023-11-29 01:28:22,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:22,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:22,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:28:22,457 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:28:22,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 01:28:23,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:28:23,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 3465 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 01:28:23,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:28:23,336 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 342 proven. 3 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2023-11-29 01:28:23,336 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:28:23,734 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 50 proven. 12 refuted. 0 times theorem prover too weak. 597 trivial. 0 not checked. [2023-11-29 01:28:23,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:28:23,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028033454] [2023-11-29 01:28:23,735 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:28:23,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152371872] [2023-11-29 01:28:23,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152371872] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:28:23,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:28:23,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2023-11-29 01:28:23,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595900982] [2023-11-29 01:28:23,736 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:28:23,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 01:28:23,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:28:23,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 01:28:23,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:28:23,738 INFO L87 Difference]: Start difference. First operand 536 states and 816 transitions. Second operand has 14 states, 12 states have (on average 10.166666666666666) internal successors, (122), 14 states have internal predecessors, (122), 11 states have call successors, (58), 2 states have call predecessors, (58), 4 states have return successors, (56), 7 states have call predecessors, (56), 11 states have call successors, (56) [2023-11-29 01:28:25,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:28:25,416 INFO L93 Difference]: Finished difference Result 1052 states and 1607 transitions. [2023-11-29 01:28:25,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:28:25,417 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 10.166666666666666) internal successors, (122), 14 states have internal predecessors, (122), 11 states have call successors, (58), 2 states have call predecessors, (58), 4 states have return successors, (56), 7 states have call predecessors, (56), 11 states have call successors, (56) Word has length 295 [2023-11-29 01:28:25,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:28:25,422 INFO L225 Difference]: With dead ends: 1052 [2023-11-29 01:28:25,422 INFO L226 Difference]: Without dead ends: 559 [2023-11-29 01:28:25,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 593 GetRequests, 575 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:28:25,425 INFO L413 NwaCegarLoop]: 659 mSDtfsCounter, 256 mSDsluCounter, 6667 mSDsCounter, 0 mSdLazyCounter, 1187 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 7326 SdHoareTripleChecker+Invalid, 1329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:28:25,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 7326 Invalid, 1329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1187 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 01:28:25,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2023-11-29 01:28:25,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 553. [2023-11-29 01:28:25,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 317 states have (on average 1.2649842271293374) internal successors, (401), 320 states have internal predecessors, (401), 199 states have call successors, (199), 33 states have call predecessors, (199), 35 states have return successors, (240), 199 states have call predecessors, (240), 197 states have call successors, (240) [2023-11-29 01:28:25,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 840 transitions. [2023-11-29 01:28:25,483 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 840 transitions. Word has length 295 [2023-11-29 01:28:25,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:28:25,483 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 840 transitions. [2023-11-29 01:28:25,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 10.166666666666666) internal successors, (122), 14 states have internal predecessors, (122), 11 states have call successors, (58), 2 states have call predecessors, (58), 4 states have return successors, (56), 7 states have call predecessors, (56), 11 states have call successors, (56) [2023-11-29 01:28:25,484 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 840 transitions. [2023-11-29 01:28:25,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2023-11-29 01:28:25,486 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:28:25,486 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:28:25,497 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 01:28:25,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 01:28:25,687 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:28:25,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:25,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1798574303, now seen corresponding path program 2 times [2023-11-29 01:28:25,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:28:25,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100777002] [2023-11-29 01:28:25,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:25,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:28:25,799 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:28:25,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [937175163] [2023-11-29 01:28:25,799 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:28:25,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:25,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:28:25,801 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:28:25,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 01:28:27,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:28:27,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:28:27,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 3743 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 01:28:27,087 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:28:27,165 INFO L134 CoverageAnalysis]: Checked inductivity of 802 backedges. 296 proven. 0 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2023-11-29 01:28:27,165 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:28:27,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:28:27,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100777002] [2023-11-29 01:28:27,166 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:28:27,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937175163] [2023-11-29 01:28:27,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937175163] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:28:27,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:28:27,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 01:28:27,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606119619] [2023-11-29 01:28:27,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:28:27,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:28:27,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:28:27,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:28:27,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:28:27,168 INFO L87 Difference]: Start difference. First operand 553 states and 840 transitions. Second operand has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 8 states have internal predecessors, (88), 6 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 5 states have call predecessors, (31), 6 states have call successors, (31) [2023-11-29 01:28:27,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:28:27,855 INFO L93 Difference]: Finished difference Result 1057 states and 1604 transitions. [2023-11-29 01:28:27,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:28:27,856 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 8 states have internal predecessors, (88), 6 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 5 states have call predecessors, (31), 6 states have call successors, (31) Word has length 321 [2023-11-29 01:28:27,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:28:27,860 INFO L225 Difference]: With dead ends: 1057 [2023-11-29 01:28:27,860 INFO L226 Difference]: Without dead ends: 553 [2023-11-29 01:28:27,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:28:27,863 INFO L413 NwaCegarLoop]: 654 mSDtfsCounter, 179 mSDsluCounter, 3613 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 4267 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:28:27,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 4267 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 01:28:27,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2023-11-29 01:28:27,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2023-11-29 01:28:27,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 317 states have (on average 1.2649842271293374) internal successors, (401), 320 states have internal predecessors, (401), 199 states have call successors, (199), 33 states have call predecessors, (199), 35 states have return successors, (237), 199 states have call predecessors, (237), 197 states have call successors, (237) [2023-11-29 01:28:27,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 837 transitions. [2023-11-29 01:28:27,893 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 837 transitions. Word has length 321 [2023-11-29 01:28:27,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:28:27,893 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 837 transitions. [2023-11-29 01:28:27,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 8 states have internal predecessors, (88), 6 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 5 states have call predecessors, (31), 6 states have call successors, (31) [2023-11-29 01:28:27,894 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 837 transitions. [2023-11-29 01:28:27,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2023-11-29 01:28:27,895 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:28:27,896 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:28:27,908 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 01:28:28,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 01:28:28,096 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:28:28,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:28,097 INFO L85 PathProgramCache]: Analyzing trace with hash -890885086, now seen corresponding path program 3 times [2023-11-29 01:28:28,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:28:28,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115785527] [2023-11-29 01:28:28,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:28,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:28:28,183 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:28:28,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2035225923] [2023-11-29 01:28:28,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:28:28,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:28,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:28:28,185 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:28:28,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 01:28:28,779 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 01:28:28,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:28:28,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 2016 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 01:28:28,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:28:28,895 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 84 proven. 2 refuted. 0 times theorem prover too weak. 807 trivial. 0 not checked. [2023-11-29 01:28:28,895 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:28:29,314 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 84 proven. 3 refuted. 0 times theorem prover too weak. 806 trivial. 0 not checked. [2023-11-29 01:28:29,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:28:29,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115785527] [2023-11-29 01:28:29,315 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:28:29,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035225923] [2023-11-29 01:28:29,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035225923] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:28:29,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:28:29,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 8 [2023-11-29 01:28:29,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407941772] [2023-11-29 01:28:29,316 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:28:29,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:28:29,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:28:29,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:28:29,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:28:29,318 INFO L87 Difference]: Start difference. First operand 553 states and 837 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 4 states have call predecessors, (30), 3 states have call successors, (30) [2023-11-29 01:28:30,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:28:30,660 INFO L93 Difference]: Finished difference Result 1053 states and 1608 transitions. [2023-11-29 01:28:30,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:28:30,661 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 4 states have call predecessors, (30), 3 states have call successors, (30) Word has length 334 [2023-11-29 01:28:30,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:28:30,665 INFO L225 Difference]: With dead ends: 1053 [2023-11-29 01:28:30,666 INFO L226 Difference]: Without dead ends: 555 [2023-11-29 01:28:30,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 662 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:28:30,669 INFO L413 NwaCegarLoop]: 668 mSDtfsCounter, 21 mSDsluCounter, 3811 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 4479 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:28:30,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 4479 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 01:28:30,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2023-11-29 01:28:30,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 555. [2023-11-29 01:28:30,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 319 states have (on average 1.2633228840125392) internal successors, (403), 321 states have internal predecessors, (403), 199 states have call successors, (199), 34 states have call predecessors, (199), 35 states have return successors, (236), 199 states have call predecessors, (236), 197 states have call successors, (236) [2023-11-29 01:28:30,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 838 transitions. [2023-11-29 01:28:30,703 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 838 transitions. Word has length 334 [2023-11-29 01:28:30,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:28:30,704 INFO L495 AbstractCegarLoop]: Abstraction has 555 states and 838 transitions. [2023-11-29 01:28:30,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 4 states have call predecessors, (30), 3 states have call successors, (30) [2023-11-29 01:28:30,704 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 838 transitions. [2023-11-29 01:28:30,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2023-11-29 01:28:30,706 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:28:30,706 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:28:30,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 01:28:30,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 01:28:30,907 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:28:30,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:30,908 INFO L85 PathProgramCache]: Analyzing trace with hash -139188997, now seen corresponding path program 1 times [2023-11-29 01:28:30,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:28:30,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322630245] [2023-11-29 01:28:30,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:30,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:28:31,005 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:28:31,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [973713825] [2023-11-29 01:28:31,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:31,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:31,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:28:31,007 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:28:31,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 01:28:31,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:28:31,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 4021 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-29 01:28:31,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:28:32,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 01:28:32,221 INFO L134 CoverageAnalysis]: Checked inductivity of 997 backedges. 387 proven. 0 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2023-11-29 01:28:32,222 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:28:32,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:28:32,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322630245] [2023-11-29 01:28:32,222 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:28:32,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973713825] [2023-11-29 01:28:32,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973713825] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:28:32,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:28:32,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 01:28:32,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676824804] [2023-11-29 01:28:32,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:28:32,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 01:28:32,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:28:32,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 01:28:32,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:28:32,226 INFO L87 Difference]: Start difference. First operand 555 states and 838 transitions. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 7 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (34), 7 states have call predecessors, (34), 7 states have call successors, (34) [2023-11-29 01:28:34,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:28:34,978 INFO L93 Difference]: Finished difference Result 1120 states and 1739 transitions. [2023-11-29 01:28:34,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 01:28:34,979 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 7 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (34), 7 states have call predecessors, (34), 7 states have call successors, (34) Word has length 347 [2023-11-29 01:28:34,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:28:34,983 INFO L225 Difference]: With dead ends: 1120 [2023-11-29 01:28:34,983 INFO L226 Difference]: Without dead ends: 594 [2023-11-29 01:28:34,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:28:34,987 INFO L413 NwaCegarLoop]: 658 mSDtfsCounter, 147 mSDsluCounter, 5996 mSDsCounter, 0 mSdLazyCounter, 1742 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 6654 SdHoareTripleChecker+Invalid, 1748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:28:34,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 6654 Invalid, 1748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1742 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-29 01:28:34,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2023-11-29 01:28:35,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 570. [2023-11-29 01:28:35,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 333 states have (on average 1.2642642642642643) internal successors, (421), 334 states have internal predecessors, (421), 199 states have call successors, (199), 34 states have call predecessors, (199), 36 states have return successors, (268), 201 states have call predecessors, (268), 197 states have call successors, (268) [2023-11-29 01:28:35,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 888 transitions. [2023-11-29 01:28:35,035 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 888 transitions. Word has length 347 [2023-11-29 01:28:35,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:28:35,035 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 888 transitions. [2023-11-29 01:28:35,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 7 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (34), 7 states have call predecessors, (34), 7 states have call successors, (34) [2023-11-29 01:28:35,036 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 888 transitions. [2023-11-29 01:28:35,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2023-11-29 01:28:35,039 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:28:35,039 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:28:35,054 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 01:28:35,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 01:28:35,240 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:28:35,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:35,240 INFO L85 PathProgramCache]: Analyzing trace with hash 257281450, now seen corresponding path program 1 times [2023-11-29 01:28:35,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:28:35,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506755432] [2023-11-29 01:28:35,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:35,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:28:35,347 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:28:35,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [836548964] [2023-11-29 01:28:35,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:35,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:35,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:28:35,349 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:28:35,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 01:28:36,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:28:36,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 3878 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 01:28:36,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:28:36,290 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 488 proven. 0 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2023-11-29 01:28:36,290 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:28:36,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:28:36,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506755432] [2023-11-29 01:28:36,290 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:28:36,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836548964] [2023-11-29 01:28:36,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836548964] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:28:36,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:28:36,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 01:28:36,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672355343] [2023-11-29 01:28:36,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:28:36,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:28:36,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:28:36,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:28:36,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:28:36,293 INFO L87 Difference]: Start difference. First operand 570 states and 888 transitions. Second operand has 10 states, 9 states have (on average 11.555555555555555) internal successors, (104), 10 states have internal predecessors, (104), 7 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (33), 6 states have call predecessors, (33), 7 states have call successors, (33) [2023-11-29 01:28:37,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:28:37,207 INFO L93 Difference]: Finished difference Result 1117 states and 1741 transitions. [2023-11-29 01:28:37,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 01:28:37,207 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 11.555555555555555) internal successors, (104), 10 states have internal predecessors, (104), 7 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (33), 6 states have call predecessors, (33), 7 states have call successors, (33) Word has length 334 [2023-11-29 01:28:37,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:28:37,211 INFO L225 Difference]: With dead ends: 1117 [2023-11-29 01:28:37,211 INFO L226 Difference]: Without dead ends: 590 [2023-11-29 01:28:37,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:28:37,215 INFO L413 NwaCegarLoop]: 636 mSDtfsCounter, 247 mSDsluCounter, 4735 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 5371 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:28:37,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 5371 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 951 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 01:28:37,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2023-11-29 01:28:37,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 550. [2023-11-29 01:28:37,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 315 states have (on average 1.2603174603174603) internal successors, (397), 316 states have internal predecessors, (397), 198 states have call successors, (198), 34 states have call predecessors, (198), 35 states have return successors, (259), 199 states have call predecessors, (259), 196 states have call successors, (259) [2023-11-29 01:28:37,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 854 transitions. [2023-11-29 01:28:37,266 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 854 transitions. Word has length 334 [2023-11-29 01:28:37,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:28:37,266 INFO L495 AbstractCegarLoop]: Abstraction has 550 states and 854 transitions. [2023-11-29 01:28:37,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 11.555555555555555) internal successors, (104), 10 states have internal predecessors, (104), 7 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (33), 6 states have call predecessors, (33), 7 states have call successors, (33) [2023-11-29 01:28:37,267 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 854 transitions. [2023-11-29 01:28:37,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2023-11-29 01:28:37,270 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:28:37,270 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:28:37,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-29 01:28:37,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 01:28:37,471 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:28:37,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:37,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1094466939, now seen corresponding path program 1 times [2023-11-29 01:28:37,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:28:37,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582471331] [2023-11-29 01:28:37,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:37,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:28:37,592 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:28:37,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1874070849] [2023-11-29 01:28:37,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:37,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:37,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:28:37,594 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:28:37,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 01:28:38,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:28:38,511 INFO L262 TraceCheckSpWp]: Trace formula consists of 4015 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 01:28:38,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:28:38,591 INFO L134 CoverageAnalysis]: Checked inductivity of 997 backedges. 548 proven. 0 refuted. 0 times theorem prover too weak. 449 trivial. 0 not checked. [2023-11-29 01:28:38,592 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:28:38,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:28:38,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582471331] [2023-11-29 01:28:38,592 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:28:38,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874070849] [2023-11-29 01:28:38,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874070849] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:28:38,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:28:38,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:28:38,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857552074] [2023-11-29 01:28:38,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:28:38,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:28:38,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:28:38,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:28:38,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:28:38,594 INFO L87 Difference]: Start difference. First operand 550 states and 854 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 4 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) [2023-11-29 01:28:39,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:28:39,091 INFO L93 Difference]: Finished difference Result 1138 states and 1780 transitions. [2023-11-29 01:28:39,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:28:39,092 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 4 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) Word has length 347 [2023-11-29 01:28:39,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:28:39,096 INFO L225 Difference]: With dead ends: 1138 [2023-11-29 01:28:39,096 INFO L226 Difference]: Without dead ends: 628 [2023-11-29 01:28:39,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:28:39,101 INFO L413 NwaCegarLoop]: 735 mSDtfsCounter, 106 mSDsluCounter, 2852 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 3587 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:28:39,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 3587 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:28:39,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2023-11-29 01:28:39,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 556. [2023-11-29 01:28:39,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 318 states have (on average 1.2578616352201257) internal successors, (400), 319 states have internal predecessors, (400), 201 states have call successors, (201), 34 states have call predecessors, (201), 35 states have return successors, (262), 202 states have call predecessors, (262), 199 states have call successors, (262) [2023-11-29 01:28:39,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 863 transitions. [2023-11-29 01:28:39,142 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 863 transitions. Word has length 347 [2023-11-29 01:28:39,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:28:39,142 INFO L495 AbstractCegarLoop]: Abstraction has 556 states and 863 transitions. [2023-11-29 01:28:39,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 4 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) [2023-11-29 01:28:39,143 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 863 transitions. [2023-11-29 01:28:39,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2023-11-29 01:28:39,145 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:28:39,145 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:28:39,158 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 01:28:39,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 01:28:39,346 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:28:39,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:39,346 INFO L85 PathProgramCache]: Analyzing trace with hash 554064001, now seen corresponding path program 1 times [2023-11-29 01:28:39,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:28:39,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998521302] [2023-11-29 01:28:39,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:39,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:28:39,458 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:28:39,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1562150843] [2023-11-29 01:28:39,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:39,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:39,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:28:39,460 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:28:39,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 01:28:40,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:28:40,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 4006 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:28:40,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:28:40,488 INFO L134 CoverageAnalysis]: Checked inductivity of 997 backedges. 540 proven. 0 refuted. 0 times theorem prover too weak. 457 trivial. 0 not checked. [2023-11-29 01:28:40,488 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:28:40,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:28:40,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998521302] [2023-11-29 01:28:40,489 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:28:40,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562150843] [2023-11-29 01:28:40,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562150843] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:28:40,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:28:40,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:28:40,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079626645] [2023-11-29 01:28:40,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:28:40,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:28:40,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:28:40,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:28:40,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:28:40,491 INFO L87 Difference]: Start difference. First operand 556 states and 863 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2023-11-29 01:28:40,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:28:40,728 INFO L93 Difference]: Finished difference Result 1083 states and 1751 transitions. [2023-11-29 01:28:40,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:28:40,728 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 347 [2023-11-29 01:28:40,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:28:40,733 INFO L225 Difference]: With dead ends: 1083 [2023-11-29 01:28:40,733 INFO L226 Difference]: Without dead ends: 556 [2023-11-29 01:28:40,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:28:40,736 INFO L413 NwaCegarLoop]: 710 mSDtfsCounter, 7 mSDsluCounter, 1400 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2110 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:28:40,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2110 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:28:40,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2023-11-29 01:28:40,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 556. [2023-11-29 01:28:40,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 318 states have (on average 1.2547169811320755) internal successors, (399), 319 states have internal predecessors, (399), 201 states have call successors, (201), 34 states have call predecessors, (201), 35 states have return successors, (262), 202 states have call predecessors, (262), 199 states have call successors, (262) [2023-11-29 01:28:40,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 862 transitions. [2023-11-29 01:28:40,775 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 862 transitions. Word has length 347 [2023-11-29 01:28:40,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:28:40,776 INFO L495 AbstractCegarLoop]: Abstraction has 556 states and 862 transitions. [2023-11-29 01:28:40,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2023-11-29 01:28:40,777 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 862 transitions. [2023-11-29 01:28:40,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2023-11-29 01:28:40,780 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:28:40,780 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:28:40,791 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 01:28:40,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:40,982 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:28:40,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:40,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1796631171, now seen corresponding path program 1 times [2023-11-29 01:28:40,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:28:40,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800478000] [2023-11-29 01:28:40,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:40,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:28:41,080 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:28:41,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [390581306] [2023-11-29 01:28:41,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:41,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:41,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:28:41,081 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:28:41,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 01:28:42,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:28:42,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 4012 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 01:28:42,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:28:42,204 INFO L134 CoverageAnalysis]: Checked inductivity of 997 backedges. 466 proven. 0 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2023-11-29 01:28:42,204 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:28:42,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:28:42,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800478000] [2023-11-29 01:28:42,204 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:28:42,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390581306] [2023-11-29 01:28:42,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390581306] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:28:42,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:28:42,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:28:42,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159092443] [2023-11-29 01:28:42,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:28:42,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:28:42,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:28:42,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:28:42,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:28:42,207 INFO L87 Difference]: Start difference. First operand 556 states and 862 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 4 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2023-11-29 01:28:43,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:28:43,037 INFO L93 Difference]: Finished difference Result 1130 states and 1764 transitions. [2023-11-29 01:28:43,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:28:43,038 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 4 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) Word has length 347 [2023-11-29 01:28:43,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:28:43,044 INFO L225 Difference]: With dead ends: 1130 [2023-11-29 01:28:43,044 INFO L226 Difference]: Without dead ends: 626 [2023-11-29 01:28:43,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:28:43,047 INFO L413 NwaCegarLoop]: 777 mSDtfsCounter, 96 mSDsluCounter, 2961 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 3738 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:28:43,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 3738 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 01:28:43,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2023-11-29 01:28:43,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 562. [2023-11-29 01:28:43,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 321 states have (on average 1.2523364485981308) internal successors, (402), 322 states have internal predecessors, (402), 204 states have call successors, (204), 34 states have call predecessors, (204), 35 states have return successors, (265), 205 states have call predecessors, (265), 202 states have call successors, (265) [2023-11-29 01:28:43,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 871 transitions. [2023-11-29 01:28:43,093 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 871 transitions. Word has length 347 [2023-11-29 01:28:43,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:28:43,093 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 871 transitions. [2023-11-29 01:28:43,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 4 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2023-11-29 01:28:43,094 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 871 transitions. [2023-11-29 01:28:43,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2023-11-29 01:28:43,097 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:28:43,097 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:28:43,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-29 01:28:43,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:43,298 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:28:43,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:43,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1614827135, now seen corresponding path program 1 times [2023-11-29 01:28:43,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:28:43,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863521816] [2023-11-29 01:28:43,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:43,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:28:43,399 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:28:43,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [509620229] [2023-11-29 01:28:43,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:43,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:43,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:28:43,401 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:28:43,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 01:28:44,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:28:44,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 4009 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 01:28:44,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:28:44,539 INFO L134 CoverageAnalysis]: Checked inductivity of 997 backedges. 450 proven. 0 refuted. 0 times theorem prover too weak. 547 trivial. 0 not checked. [2023-11-29 01:28:44,539 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:28:44,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:28:44,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863521816] [2023-11-29 01:28:44,539 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:28:44,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509620229] [2023-11-29 01:28:44,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509620229] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:28:44,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:28:44,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:28:44,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643856574] [2023-11-29 01:28:44,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:28:44,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:28:44,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:28:44,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:28:44,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:28:44,542 INFO L87 Difference]: Start difference. First operand 562 states and 871 transitions. Second operand has 5 states, 4 states have (on average 26.0) internal successors, (104), 5 states have internal predecessors, (104), 3 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 2 states have call predecessors, (33), 3 states have call successors, (33) [2023-11-29 01:28:45,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:28:45,120 INFO L93 Difference]: Finished difference Result 1072 states and 1664 transitions. [2023-11-29 01:28:45,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:28:45,121 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 26.0) internal successors, (104), 5 states have internal predecessors, (104), 3 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 2 states have call predecessors, (33), 3 states have call successors, (33) Word has length 347 [2023-11-29 01:28:45,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:28:45,126 INFO L225 Difference]: With dead ends: 1072 [2023-11-29 01:28:45,126 INFO L226 Difference]: Without dead ends: 556 [2023-11-29 01:28:45,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:28:45,129 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 2 mSDsluCounter, 1887 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2548 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:28:45,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2548 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:28:45,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2023-11-29 01:28:45,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 556. [2023-11-29 01:28:45,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 318 states have (on average 1.251572327044025) internal successors, (398), 319 states have internal predecessors, (398), 201 states have call successors, (201), 34 states have call predecessors, (201), 35 states have return successors, (262), 202 states have call predecessors, (262), 199 states have call successors, (262) [2023-11-29 01:28:45,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 861 transitions. [2023-11-29 01:28:45,196 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 861 transitions. Word has length 347 [2023-11-29 01:28:45,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:28:45,197 INFO L495 AbstractCegarLoop]: Abstraction has 556 states and 861 transitions. [2023-11-29 01:28:45,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 26.0) internal successors, (104), 5 states have internal predecessors, (104), 3 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 2 states have call predecessors, (33), 3 states have call successors, (33) [2023-11-29 01:28:45,198 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 861 transitions. [2023-11-29 01:28:45,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2023-11-29 01:28:45,202 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:28:45,202 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:28:45,217 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 01:28:45,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:45,403 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:28:45,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:45,403 INFO L85 PathProgramCache]: Analyzing trace with hash -2011707783, now seen corresponding path program 1 times [2023-11-29 01:28:45,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:28:45,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202450664] [2023-11-29 01:28:45,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:45,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:28:45,521 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:28:45,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1567722723] [2023-11-29 01:28:45,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:45,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:45,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:28:45,522 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:28:45,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 01:28:46,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:28:46,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 4018 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 01:28:46,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:28:46,710 INFO L134 CoverageAnalysis]: Checked inductivity of 997 backedges. 358 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2023-11-29 01:28:46,710 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:28:46,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:28:46,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202450664] [2023-11-29 01:28:46,711 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:28:46,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567722723] [2023-11-29 01:28:46,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567722723] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:28:46,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:28:46,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:28:46,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634315789] [2023-11-29 01:28:46,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:28:46,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:28:46,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:28:46,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:28:46,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:28:46,713 INFO L87 Difference]: Start difference. First operand 556 states and 861 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 4 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2023-11-29 01:28:47,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:28:47,323 INFO L93 Difference]: Finished difference Result 1113 states and 1734 transitions. [2023-11-29 01:28:47,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:28:47,323 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 4 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) Word has length 347 [2023-11-29 01:28:47,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:28:47,328 INFO L225 Difference]: With dead ends: 1113 [2023-11-29 01:28:47,329 INFO L226 Difference]: Without dead ends: 615 [2023-11-29 01:28:47,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:28:47,332 INFO L413 NwaCegarLoop]: 747 mSDtfsCounter, 58 mSDsluCounter, 2908 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 3655 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:28:47,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 3655 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:28:47,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2023-11-29 01:28:47,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 562. [2023-11-29 01:28:47,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 321 states have (on average 1.249221183800623) internal successors, (401), 322 states have internal predecessors, (401), 204 states have call successors, (204), 34 states have call predecessors, (204), 35 states have return successors, (266), 205 states have call predecessors, (266), 202 states have call successors, (266) [2023-11-29 01:28:47,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 871 transitions. [2023-11-29 01:28:47,377 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 871 transitions. Word has length 347 [2023-11-29 01:28:47,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:28:47,377 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 871 transitions. [2023-11-29 01:28:47,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 4 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2023-11-29 01:28:47,377 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 871 transitions. [2023-11-29 01:28:47,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2023-11-29 01:28:47,380 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:28:47,380 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:28:47,394 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 01:28:47,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:47,581 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:28:47,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:47,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1603987259, now seen corresponding path program 1 times [2023-11-29 01:28:47,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:28:47,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477927877] [2023-11-29 01:28:47,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:47,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:28:47,683 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:28:47,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [73997192] [2023-11-29 01:28:47,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:47,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:47,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:28:47,684 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:28:47,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 01:28:48,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:28:48,818 INFO L262 TraceCheckSpWp]: Trace formula consists of 4021 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 01:28:48,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:28:48,855 INFO L134 CoverageAnalysis]: Checked inductivity of 997 backedges. 390 proven. 0 refuted. 0 times theorem prover too weak. 607 trivial. 0 not checked. [2023-11-29 01:28:48,855 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:28:48,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:28:48,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477927877] [2023-11-29 01:28:48,856 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:28:48,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73997192] [2023-11-29 01:28:48,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73997192] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:28:48,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:28:48,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:28:48,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314668833] [2023-11-29 01:28:48,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:28:48,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:28:48,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:28:48,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:28:48,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:28:48,858 INFO L87 Difference]: Start difference. First operand 562 states and 871 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-29 01:28:49,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:28:49,168 INFO L93 Difference]: Finished difference Result 1115 states and 1748 transitions. [2023-11-29 01:28:49,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:28:49,169 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 347 [2023-11-29 01:28:49,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:28:49,174 INFO L225 Difference]: With dead ends: 1115 [2023-11-29 01:28:49,174 INFO L226 Difference]: Without dead ends: 582 [2023-11-29 01:28:49,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:28:49,178 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 6 mSDsluCounter, 2111 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2825 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:28:49,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2825 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:28:49,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2023-11-29 01:28:49,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 574. [2023-11-29 01:28:49,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 333 states have (on average 1.2522522522522523) internal successors, (417), 334 states have internal predecessors, (417), 204 states have call successors, (204), 34 states have call predecessors, (204), 35 states have return successors, (266), 205 states have call predecessors, (266), 202 states have call successors, (266) [2023-11-29 01:28:49,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 887 transitions. [2023-11-29 01:28:49,225 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 887 transitions. Word has length 347 [2023-11-29 01:28:49,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:28:49,225 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 887 transitions. [2023-11-29 01:28:49,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-29 01:28:49,226 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 887 transitions. [2023-11-29 01:28:49,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2023-11-29 01:28:49,228 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:28:49,229 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:28:49,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-29 01:28:49,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 01:28:49,430 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:28:49,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:49,430 INFO L85 PathProgramCache]: Analyzing trace with hash 228416739, now seen corresponding path program 1 times [2023-11-29 01:28:49,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:28:49,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691668535] [2023-11-29 01:28:49,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:49,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:28:49,540 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:28:49,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1961312319] [2023-11-29 01:28:49,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:49,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:49,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:28:49,541 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:28:49,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 01:28:50,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:28:50,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 4027 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 01:28:50,635 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:28:50,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1003 backedges. 357 proven. 0 refuted. 0 times theorem prover too weak. 646 trivial. 0 not checked. [2023-11-29 01:28:50,703 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:28:50,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:28:50,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691668535] [2023-11-29 01:28:50,703 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:28:50,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961312319] [2023-11-29 01:28:50,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961312319] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:28:50,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:28:50,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:28:50,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057285228] [2023-11-29 01:28:50,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:28:50,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:28:50,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:28:50,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:28:50,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:28:50,706 INFO L87 Difference]: Start difference. First operand 574 states and 887 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-29 01:28:52,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:28:52,393 INFO L93 Difference]: Finished difference Result 1119 states and 1800 transitions. [2023-11-29 01:28:52,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:28:52,394 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 353 [2023-11-29 01:28:52,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:28:52,398 INFO L225 Difference]: With dead ends: 1119 [2023-11-29 01:28:52,398 INFO L226 Difference]: Without dead ends: 574 [2023-11-29 01:28:52,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:28:52,403 INFO L413 NwaCegarLoop]: 736 mSDtfsCounter, 10 mSDsluCounter, 1957 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2693 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:28:52,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2693 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 01:28:52,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2023-11-29 01:28:52,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 574. [2023-11-29 01:28:52,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 333 states have (on average 1.2492492492492493) internal successors, (416), 334 states have internal predecessors, (416), 204 states have call successors, (204), 34 states have call predecessors, (204), 35 states have return successors, (266), 205 states have call predecessors, (266), 202 states have call successors, (266) [2023-11-29 01:28:52,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 886 transitions. [2023-11-29 01:28:52,448 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 886 transitions. Word has length 353 [2023-11-29 01:28:52,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:28:52,449 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 886 transitions. [2023-11-29 01:28:52,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-29 01:28:52,449 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 886 transitions. [2023-11-29 01:28:52,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2023-11-29 01:28:52,452 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:28:52,452 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:28:52,466 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-29 01:28:52,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 01:28:52,652 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:28:52,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:52,653 INFO L85 PathProgramCache]: Analyzing trace with hash -415349151, now seen corresponding path program 1 times [2023-11-29 01:28:52,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:28:52,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148227484] [2023-11-29 01:28:52,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:52,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:28:52,770 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:28:52,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2045206359] [2023-11-29 01:28:52,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:52,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:52,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:28:52,772 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:28:52,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 01:28:53,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:28:53,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 4042 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-29 01:28:53,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:28:54,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1003 backedges. 358 proven. 0 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2023-11-29 01:28:54,049 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:28:54,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:28:54,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148227484] [2023-11-29 01:28:54,049 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:28:54,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045206359] [2023-11-29 01:28:54,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045206359] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:28:54,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:28:54,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 01:28:54,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756188392] [2023-11-29 01:28:54,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:28:54,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:28:54,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:28:54,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:28:54,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:28:54,052 INFO L87 Difference]: Start difference. First operand 574 states and 886 transitions. Second operand has 10 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 6 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 7 states have call predecessors, (31), 6 states have call successors, (31) [2023-11-29 01:28:55,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:28:55,296 INFO L93 Difference]: Finished difference Result 1178 states and 1829 transitions. [2023-11-29 01:28:55,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 01:28:55,297 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 6 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 7 states have call predecessors, (31), 6 states have call successors, (31) Word has length 353 [2023-11-29 01:28:55,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:28:55,303 INFO L225 Difference]: With dead ends: 1178 [2023-11-29 01:28:55,303 INFO L226 Difference]: Without dead ends: 662 [2023-11-29 01:28:55,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:28:55,306 INFO L413 NwaCegarLoop]: 730 mSDtfsCounter, 161 mSDsluCounter, 5771 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 6501 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:28:55,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 6501 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 01:28:55,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2023-11-29 01:28:55,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 596. [2023-11-29 01:28:55,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 345 states have (on average 1.2434782608695651) internal successors, (429), 346 states have internal predecessors, (429), 213 states have call successors, (213), 34 states have call predecessors, (213), 36 states have return successors, (278), 215 states have call predecessors, (278), 211 states have call successors, (278) [2023-11-29 01:28:55,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 920 transitions. [2023-11-29 01:28:55,358 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 920 transitions. Word has length 353 [2023-11-29 01:28:55,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:28:55,359 INFO L495 AbstractCegarLoop]: Abstraction has 596 states and 920 transitions. [2023-11-29 01:28:55,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 6 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 7 states have call predecessors, (31), 6 states have call successors, (31) [2023-11-29 01:28:55,359 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 920 transitions. [2023-11-29 01:28:55,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2023-11-29 01:28:55,362 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:28:55,362 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:28:55,381 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-29 01:28:55,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:55,563 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:28:55,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:55,563 INFO L85 PathProgramCache]: Analyzing trace with hash -619585887, now seen corresponding path program 1 times [2023-11-29 01:28:55,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:28:55,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179032282] [2023-11-29 01:28:55,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:55,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:28:55,672 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:28:55,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [35708089] [2023-11-29 01:28:55,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:55,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:55,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:28:55,674 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:28:55,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-29 01:28:56,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:28:56,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 4036 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 01:28:56,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:28:57,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1003 backedges. 466 proven. 0 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2023-11-29 01:28:57,008 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:28:57,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:28:57,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179032282] [2023-11-29 01:28:57,009 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:28:57,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35708089] [2023-11-29 01:28:57,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35708089] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:28:57,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:28:57,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:28:57,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153134448] [2023-11-29 01:28:57,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:28:57,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:28:57,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:28:57,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:28:57,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:28:57,011 INFO L87 Difference]: Start difference. First operand 596 states and 920 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 4 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2023-11-29 01:28:57,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:28:57,601 INFO L93 Difference]: Finished difference Result 1182 states and 1834 transitions. [2023-11-29 01:28:57,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:28:57,601 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 4 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) Word has length 353 [2023-11-29 01:28:57,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:28:57,607 INFO L225 Difference]: With dead ends: 1182 [2023-11-29 01:28:57,607 INFO L226 Difference]: Without dead ends: 652 [2023-11-29 01:28:57,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:28:57,610 INFO L413 NwaCegarLoop]: 768 mSDtfsCounter, 93 mSDsluCounter, 2935 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 3703 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:28:57,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 3703 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:28:57,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2023-11-29 01:28:57,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 596. [2023-11-29 01:28:57,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 345 states have (on average 1.23768115942029) internal successors, (427), 346 states have internal predecessors, (427), 213 states have call successors, (213), 34 states have call predecessors, (213), 36 states have return successors, (278), 215 states have call predecessors, (278), 211 states have call successors, (278) [2023-11-29 01:28:57,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 918 transitions. [2023-11-29 01:28:57,672 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 918 transitions. Word has length 353 [2023-11-29 01:28:57,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:28:57,672 INFO L495 AbstractCegarLoop]: Abstraction has 596 states and 918 transitions. [2023-11-29 01:28:57,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 4 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2023-11-29 01:28:57,673 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 918 transitions. [2023-11-29 01:28:57,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2023-11-29 01:28:57,675 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:28:57,675 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:28:57,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-29 01:28:57,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:57,876 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:28:57,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:57,877 INFO L85 PathProgramCache]: Analyzing trace with hash -121029085, now seen corresponding path program 1 times [2023-11-29 01:28:57,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:28:57,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990026483] [2023-11-29 01:28:57,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:57,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:28:57,990 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:28:57,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [614022357] [2023-11-29 01:28:57,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:57,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:57,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:28:57,992 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:28:57,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-29 01:28:59,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:28:59,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 4033 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 01:28:59,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:28:59,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1003 backedges. 552 proven. 0 refuted. 0 times theorem prover too weak. 451 trivial. 0 not checked. [2023-11-29 01:28:59,207 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:28:59,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:28:59,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990026483] [2023-11-29 01:28:59,207 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:28:59,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614022357] [2023-11-29 01:28:59,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614022357] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:28:59,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:28:59,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:28:59,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301078764] [2023-11-29 01:28:59,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:28:59,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:28:59,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:28:59,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:28:59,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:28:59,209 INFO L87 Difference]: Start difference. First operand 596 states and 918 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 4 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) [2023-11-29 01:28:59,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:28:59,881 INFO L93 Difference]: Finished difference Result 1108 states and 1708 transitions. [2023-11-29 01:28:59,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:28:59,881 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 4 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) Word has length 353 [2023-11-29 01:28:59,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:28:59,888 INFO L225 Difference]: With dead ends: 1108 [2023-11-29 01:28:59,888 INFO L226 Difference]: Without dead ends: 564 [2023-11-29 01:28:59,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:28:59,891 INFO L413 NwaCegarLoop]: 697 mSDtfsCounter, 100 mSDsluCounter, 2592 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 3289 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:28:59,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 3289 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 01:28:59,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2023-11-29 01:28:59,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2023-11-29 01:28:59,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 328 states have (on average 1.2439024390243902) internal successors, (408), 330 states have internal predecessors, (408), 198 states have call successors, (198), 34 states have call predecessors, (198), 36 states have return successors, (260), 199 states have call predecessors, (260), 196 states have call successors, (260) [2023-11-29 01:28:59,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 866 transitions. [2023-11-29 01:28:59,939 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 866 transitions. Word has length 353 [2023-11-29 01:28:59,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:28:59,939 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 866 transitions. [2023-11-29 01:28:59,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 4 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) [2023-11-29 01:28:59,939 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 866 transitions. [2023-11-29 01:28:59,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2023-11-29 01:28:59,942 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:28:59,943 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:28:59,957 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-29 01:29:00,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 01:29:00,143 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:29:00,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:29:00,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1837767518, now seen corresponding path program 1 times [2023-11-29 01:29:00,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:29:00,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789420166] [2023-11-29 01:29:00,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:29:00,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:29:00,254 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:29:00,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1982779996] [2023-11-29 01:29:00,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:29:00,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:29:00,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:29:00,256 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:29:00,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-29 01:29:01,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:29:01,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 4076 conjuncts, 78 conjunts are in the unsatisfiable core [2023-11-29 01:29:01,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:29:01,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 27 treesize of output 15 [2023-11-29 01:29:05,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 01:29:38,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1055 backedges. 441 proven. 0 refuted. 0 times theorem prover too weak. 614 trivial. 0 not checked. [2023-11-29 01:29:38,185 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:29:38,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:29:38,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789420166] [2023-11-29 01:29:38,185 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:29:38,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982779996] [2023-11-29 01:29:38,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982779996] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:29:38,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:29:38,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-29 01:29:38,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948371630] [2023-11-29 01:29:38,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:29:38,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 01:29:38,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:29:38,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 01:29:38,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=216, Unknown=9, NotChecked=0, Total=272 [2023-11-29 01:29:38,188 INFO L87 Difference]: Start difference. First operand 564 states and 866 transitions. Second operand has 17 states, 15 states have (on average 8.533333333333333) internal successors, (128), 16 states have internal predecessors, (128), 10 states have call successors, (40), 4 states have call predecessors, (40), 7 states have return successors, (38), 10 states have call predecessors, (38), 10 states have call successors, (38) [2023-11-29 01:30:42,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:30:44,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:30:50,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.62s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:31:05,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:31:10,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:31:10,622 INFO L93 Difference]: Finished difference Result 1692 states and 2605 transitions. [2023-11-29 01:31:10,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 01:31:10,623 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 8.533333333333333) internal successors, (128), 16 states have internal predecessors, (128), 10 states have call successors, (40), 4 states have call predecessors, (40), 7 states have return successors, (38), 10 states have call predecessors, (38), 10 states have call successors, (38) Word has length 363 [2023-11-29 01:31:10,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:31:10,654 INFO L225 Difference]: With dead ends: 1692 [2023-11-29 01:31:10,654 INFO L226 Difference]: Without dead ends: 1157 [2023-11-29 01:31:10,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 346 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 104.9s TimeCoverageRelationStatistics Valid=152, Invalid=752, Unknown=26, NotChecked=0, Total=930 [2023-11-29 01:31:10,656 INFO L413 NwaCegarLoop]: 1129 mSDtfsCounter, 752 mSDsluCounter, 6465 mSDsCounter, 0 mSdLazyCounter, 5742 mSolverCounterSat, 773 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 7594 SdHoareTripleChecker+Invalid, 6518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 773 IncrementalHoareTripleChecker+Valid, 5742 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:31:10,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 7594 Invalid, 6518 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [773 Valid, 5742 Invalid, 3 Unknown, 0 Unchecked, 23.6s Time] [2023-11-29 01:31:10,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2023-11-29 01:31:10,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1120. [2023-11-29 01:31:10,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 655 states have (on average 1.2458015267175573) internal successors, (816), 662 states have internal predecessors, (816), 387 states have call successors, (387), 70 states have call predecessors, (387), 76 states have return successors, (529), 387 states have call predecessors, (529), 384 states have call successors, (529) [2023-11-29 01:31:10,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 1732 transitions. [2023-11-29 01:31:10,756 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 1732 transitions. Word has length 363 [2023-11-29 01:31:10,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:31:10,757 INFO L495 AbstractCegarLoop]: Abstraction has 1120 states and 1732 transitions. [2023-11-29 01:31:10,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 8.533333333333333) internal successors, (128), 16 states have internal predecessors, (128), 10 states have call successors, (40), 4 states have call predecessors, (40), 7 states have return successors, (38), 10 states have call predecessors, (38), 10 states have call successors, (38) [2023-11-29 01:31:10,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 1732 transitions. [2023-11-29 01:31:10,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2023-11-29 01:31:10,760 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:31:10,761 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:10,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-11-29 01:31:10,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:10,962 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:31:10,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:10,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1843746396, now seen corresponding path program 1 times [2023-11-29 01:31:10,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:10,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715432831] [2023-11-29 01:31:10,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:10,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:11,055 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:31:11,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1370591123] [2023-11-29 01:31:11,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:11,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:11,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:31:11,056 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:31:11,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-29 01:31:13,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:13,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 4110 conjuncts, 228 conjunts are in the unsatisfiable core [2023-11-29 01:31:13,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:31:13,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 01:31:13,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 01:31:13,495 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 67 treesize of output 55 [2023-11-29 01:31:17,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 01:31:18,014 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 67 treesize of output 55 [2023-11-29 01:31:24,291 WARN L293 SmtUtils]: Spent 5.54s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 01:31:32,458 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 01:31:38,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1055 backedges. 489 proven. 32 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2023-11-29 01:31:38,670 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:32:03,121 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 54 treesize of output 50 [2023-11-29 01:32:06,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:32:06,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715432831] [2023-11-29 01:32:06,286 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:32:06,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370591123] [2023-11-29 01:32:06,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370591123] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:32:06,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:32:06,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2023-11-29 01:32:06,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308553783] [2023-11-29 01:32:06,287 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:32:06,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-11-29 01:32:06,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:32:06,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-11-29 01:32:06,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=2979, Unknown=0, NotChecked=0, Total=3192 [2023-11-29 01:32:06,290 INFO L87 Difference]: Start difference. First operand 1120 states and 1732 transitions. Second operand has 45 states, 37 states have (on average 3.5135135135135136) internal successors, (130), 37 states have internal predecessors, (130), 20 states have call successors, (42), 6 states have call predecessors, (42), 10 states have return successors, (40), 17 states have call predecessors, (40), 19 states have call successors, (40) [2023-11-29 01:32:40,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:33:13,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:33:28,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:33:36,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:33:44,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:33:48,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:34:00,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:34:06,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:34:10,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:34:14,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:34:37,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:34:54,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:35:11,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:35:14,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:36:16,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:36:16,980 INFO L93 Difference]: Finished difference Result 3395 states and 5450 transitions. [2023-11-29 01:36:16,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2023-11-29 01:36:16,981 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 37 states have (on average 3.5135135135135136) internal successors, (130), 37 states have internal predecessors, (130), 20 states have call successors, (42), 6 states have call predecessors, (42), 10 states have return successors, (40), 17 states have call predecessors, (40), 19 states have call successors, (40) Word has length 368 [2023-11-29 01:36:16,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:36:17,011 INFO L225 Difference]: With dead ends: 3395 [2023-11-29 01:36:17,011 INFO L226 Difference]: Without dead ends: 3389 [2023-11-29 01:36:17,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 335 SyntacticMatches, 5 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4159 ImplicationChecksByTransitivity, 57.9s TimeCoverageRelationStatistics Valid=895, Invalid=13867, Unknown=0, NotChecked=0, Total=14762 [2023-11-29 01:36:17,021 INFO L413 NwaCegarLoop]: 1306 mSDtfsCounter, 1397 mSDsluCounter, 33373 mSDsCounter, 0 mSdLazyCounter, 25374 mSolverCounterSat, 247 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 209.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 34679 SdHoareTripleChecker+Invalid, 25628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 25374 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 213.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:36:17,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1536 Valid, 34679 Invalid, 25628 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [247 Valid, 25374 Invalid, 7 Unknown, 0 Unchecked, 213.6s Time] [2023-11-29 01:36:17,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3389 states. [2023-11-29 01:36:17,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3389 to 2169. [2023-11-29 01:36:17,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2169 states, 1280 states have (on average 1.25078125) internal successors, (1601), 1293 states have internal predecessors, (1601), 732 states have call successors, (732), 139 states have call predecessors, (732), 155 states have return successors, (1101), 736 states have call predecessors, (1101), 727 states have call successors, (1101) [2023-11-29 01:36:17,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2169 states to 2169 states and 3434 transitions. [2023-11-29 01:36:17,361 INFO L78 Accepts]: Start accepts. Automaton has 2169 states and 3434 transitions. Word has length 368 [2023-11-29 01:36:17,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:36:17,362 INFO L495 AbstractCegarLoop]: Abstraction has 2169 states and 3434 transitions. [2023-11-29 01:36:17,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 37 states have (on average 3.5135135135135136) internal successors, (130), 37 states have internal predecessors, (130), 20 states have call successors, (42), 6 states have call predecessors, (42), 10 states have return successors, (40), 17 states have call predecessors, (40), 19 states have call successors, (40) [2023-11-29 01:36:17,362 INFO L276 IsEmpty]: Start isEmpty. Operand 2169 states and 3434 transitions. [2023-11-29 01:36:17,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2023-11-29 01:36:17,365 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:36:17,366 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:36:17,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-11-29 01:36:17,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 01:36:17,567 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:36:17,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:36:17,567 INFO L85 PathProgramCache]: Analyzing trace with hash -385736182, now seen corresponding path program 1 times [2023-11-29 01:36:17,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:36:17,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400692446] [2023-11-29 01:36:17,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:36:17,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:36:17,654 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:36:17,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [958642342] [2023-11-29 01:36:17,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:36:17,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:36:17,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:36:17,656 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:36:17,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-29 01:36:18,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:18,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 4109 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-29 01:36:18,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:36:18,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1055 backedges. 454 proven. 2 refuted. 0 times theorem prover too weak. 599 trivial. 0 not checked. [2023-11-29 01:36:18,814 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:36:19,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1055 backedges. 117 proven. 30 refuted. 0 times theorem prover too weak. 908 trivial. 0 not checked. [2023-11-29 01:36:19,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:36:19,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400692446] [2023-11-29 01:36:19,466 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:36:19,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958642342] [2023-11-29 01:36:19,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958642342] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:36:19,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:36:19,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 18] total 24 [2023-11-29 01:36:19,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590844918] [2023-11-29 01:36:19,467 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:36:19,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 01:36:19,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:36:19,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 01:36:19,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=496, Unknown=0, NotChecked=0, Total=552 [2023-11-29 01:36:19,470 INFO L87 Difference]: Start difference. First operand 2169 states and 3434 transitions. Second operand has 24 states, 18 states have (on average 6.944444444444445) internal successors, (125), 17 states have internal predecessors, (125), 6 states have call successors, (45), 3 states have call predecessors, (45), 8 states have return successors, (45), 8 states have call predecessors, (45), 5 states have call successors, (45) [2023-11-29 01:36:21,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:36:21,750 INFO L93 Difference]: Finished difference Result 3767 states and 6111 transitions. [2023-11-29 01:36:21,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 01:36:21,751 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 18 states have (on average 6.944444444444445) internal successors, (125), 17 states have internal predecessors, (125), 6 states have call successors, (45), 3 states have call predecessors, (45), 8 states have return successors, (45), 8 states have call predecessors, (45), 5 states have call successors, (45) Word has length 372 [2023-11-29 01:36:21,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:36:21,765 INFO L225 Difference]: With dead ends: 3767 [2023-11-29 01:36:21,765 INFO L226 Difference]: Without dead ends: 2244 [2023-11-29 01:36:21,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 745 GetRequests, 716 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2023-11-29 01:36:21,771 INFO L413 NwaCegarLoop]: 697 mSDtfsCounter, 18 mSDsluCounter, 12973 mSDsCounter, 0 mSdLazyCounter, 1791 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 13670 SdHoareTripleChecker+Invalid, 1793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:36:21,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 13670 Invalid, 1793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1791 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 01:36:21,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2244 states. [2023-11-29 01:36:22,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2244 to 2183. [2023-11-29 01:36:22,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2183 states, 1292 states have (on average 1.248452012383901) internal successors, (1613), 1307 states have internal predecessors, (1613), 732 states have call successors, (732), 139 states have call predecessors, (732), 157 states have return successors, (1159), 736 states have call predecessors, (1159), 727 states have call successors, (1159) [2023-11-29 01:36:22,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2183 states to 2183 states and 3504 transitions. [2023-11-29 01:36:22,046 INFO L78 Accepts]: Start accepts. Automaton has 2183 states and 3504 transitions. Word has length 372 [2023-11-29 01:36:22,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:36:22,046 INFO L495 AbstractCegarLoop]: Abstraction has 2183 states and 3504 transitions. [2023-11-29 01:36:22,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 18 states have (on average 6.944444444444445) internal successors, (125), 17 states have internal predecessors, (125), 6 states have call successors, (45), 3 states have call predecessors, (45), 8 states have return successors, (45), 8 states have call predecessors, (45), 5 states have call successors, (45) [2023-11-29 01:36:22,047 INFO L276 IsEmpty]: Start isEmpty. Operand 2183 states and 3504 transitions. [2023-11-29 01:36:22,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2023-11-29 01:36:22,050 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:36:22,051 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:36:22,066 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-11-29 01:36:22,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:36:22,251 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:36:22,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:36:22,252 INFO L85 PathProgramCache]: Analyzing trace with hash 128214500, now seen corresponding path program 2 times [2023-11-29 01:36:22,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:36:22,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214126274] [2023-11-29 01:36:22,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:36:22,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:36:22,351 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:36:22,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1040146845] [2023-11-29 01:36:22,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:36:22,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:36:22,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:36:22,353 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:36:22,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-29 01:36:23,533 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:36:23,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:36:23,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 4110 conjuncts, 58 conjunts are in the unsatisfiable core [2023-11-29 01:36:23,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:36:28,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1101 backedges. 841 proven. 51 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2023-11-29 01:36:28,906 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:36:33,500 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-11-29 01:36:33,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2023-11-29 01:36:33,556 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-11-29 01:36:33,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2023-11-29 01:36:33,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1101 backedges. 88 proven. 91 refuted. 0 times theorem prover too weak. 922 trivial. 0 not checked. [2023-11-29 01:36:33,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:36:33,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214126274] [2023-11-29 01:36:33,666 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:36:33,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040146845] [2023-11-29 01:36:33,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040146845] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:36:33,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:36:33,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 24 [2023-11-29 01:36:33,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78474850] [2023-11-29 01:36:33,667 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:36:33,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 01:36:33,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:36:33,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 01:36:33,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=471, Unknown=2, NotChecked=0, Total=552 [2023-11-29 01:36:33,670 INFO L87 Difference]: Start difference. First operand 2183 states and 3504 transitions. Second operand has 24 states, 21 states have (on average 10.380952380952381) internal successors, (218), 24 states have internal predecessors, (218), 17 states have call successors, (75), 4 states have call predecessors, (75), 8 states have return successors, (73), 13 states have call predecessors, (73), 17 states have call successors, (73) [2023-11-29 01:36:43,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:36:51,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:36:55,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:36:59,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:37:03,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:37:07,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:37:11,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:37:15,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:37:19,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:37:41,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:37:55,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:38:04,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:38:08,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:38:12,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:38:16,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:38:20,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:38:24,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:38:28,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:38:32,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:38:36,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:38:41,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:38:45,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:38:49,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:38:54,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:38:58,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:39:02,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:39:06,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:39:10,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:39:14,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:39:19,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:39:23,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:39:27,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:39:32,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:39:37,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:39:41,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:39:45,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:39:49,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:39:53,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:39:57,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:40:01,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:40:05,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:40:09,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:40:13,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:40:17,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:40:21,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:40:25,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:40:29,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:40:36,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:40:41,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:40:45,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:40:50,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:41:04,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:41:08,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:41:13,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:41:18,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:41:24,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:41:28,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:41:35,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:41:39,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:41:45,244 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:41:45,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:41:45,759 INFO L93 Difference]: Finished difference Result 8541 states and 13684 transitions. [2023-11-29 01:41:45,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-11-29 01:41:45,760 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 10.380952380952381) internal successors, (218), 24 states have internal predecessors, (218), 17 states have call successors, (75), 4 states have call predecessors, (75), 8 states have return successors, (73), 13 states have call predecessors, (73), 17 states have call successors, (73) Word has length 390 [2023-11-29 01:41:45,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:41:45,795 INFO L225 Difference]: With dead ends: 8541 [2023-11-29 01:41:45,795 INFO L226 Difference]: Without dead ends: 6418 [2023-11-29 01:41:45,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 826 GetRequests, 756 SyntacticMatches, 11 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 919 ImplicationChecksByTransitivity, 55.3s TimeCoverageRelationStatistics Valid=473, Invalid=3175, Unknown=12, NotChecked=0, Total=3660 [2023-11-29 01:41:45,805 INFO L413 NwaCegarLoop]: 1266 mSDtfsCounter, 1655 mSDsluCounter, 12320 mSDsCounter, 0 mSdLazyCounter, 11493 mSolverCounterSat, 632 mSolverCounterUnsat, 59 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 261.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1720 SdHoareTripleChecker+Valid, 13586 SdHoareTripleChecker+Invalid, 12184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 632 IncrementalHoareTripleChecker+Valid, 11493 IncrementalHoareTripleChecker+Invalid, 59 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 264.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:41:45,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1720 Valid, 13586 Invalid, 12184 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [632 Valid, 11493 Invalid, 59 Unknown, 0 Unchecked, 264.5s Time] [2023-11-29 01:41:45,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6418 states. [2023-11-29 01:41:46,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6418 to 4298. [2023-11-29 01:41:46,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4298 states, 2652 states have (on average 1.2526395173453997) internal successors, (3322), 2659 states have internal predecessors, (3322), 1348 states have call successors, (1348), 253 states have call predecessors, (1348), 296 states have return successors, (2173), 1385 states have call predecessors, (2173), 1338 states have call successors, (2173) [2023-11-29 01:41:46,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4298 states to 4298 states and 6843 transitions. [2023-11-29 01:41:46,436 INFO L78 Accepts]: Start accepts. Automaton has 4298 states and 6843 transitions. Word has length 390 [2023-11-29 01:41:46,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:41:46,436 INFO L495 AbstractCegarLoop]: Abstraction has 4298 states and 6843 transitions. [2023-11-29 01:41:46,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 10.380952380952381) internal successors, (218), 24 states have internal predecessors, (218), 17 states have call successors, (75), 4 states have call predecessors, (75), 8 states have return successors, (73), 13 states have call predecessors, (73), 17 states have call successors, (73) [2023-11-29 01:41:46,437 INFO L276 IsEmpty]: Start isEmpty. Operand 4298 states and 6843 transitions. [2023-11-29 01:41:46,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2023-11-29 01:41:46,442 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:41:46,442 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:41:46,457 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-11-29 01:41:46,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-11-29 01:41:46,643 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:41:46,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:41:46,644 INFO L85 PathProgramCache]: Analyzing trace with hash -2081675868, now seen corresponding path program 2 times [2023-11-29 01:41:46,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:41:46,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843412668] [2023-11-29 01:41:46,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:41:46,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:41:46,733 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:41:46,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [540588897] [2023-11-29 01:41:46,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:41:46,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:41:46,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:41:46,735 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:41:46,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d895a6-492e-4888-934e-2f00bdff6789/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-29 01:41:47,896 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:41:47,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:41:47,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 4130 conjuncts, 63 conjunts are in the unsatisfiable core [2023-11-29 01:41:47,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:41:47,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 01:41:48,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1091 backedges. 459 proven. 14 refuted. 0 times theorem prover too weak. 618 trivial. 0 not checked. [2023-11-29 01:41:48,944 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:41:49,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1091 backedges. 129 proven. 18 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2023-11-29 01:41:49,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:41:49,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843412668] [2023-11-29 01:41:49,531 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:41:49,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540588897] [2023-11-29 01:41:49,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540588897] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:41:49,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:41:49,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11] total 25 [2023-11-29 01:41:49,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287852223] [2023-11-29 01:41:49,532 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:41:49,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-29 01:41:49,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:41:49,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-29 01:41:49,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=525, Unknown=0, NotChecked=0, Total=600 [2023-11-29 01:41:49,534 INFO L87 Difference]: Start difference. First operand 4298 states and 6843 transitions. Second operand has 25 states, 24 states have (on average 6.166666666666667) internal successors, (148), 23 states have internal predecessors, (148), 16 states have call successors, (64), 5 states have call predecessors, (64), 5 states have return successors, (61), 15 states have call predecessors, (61), 15 states have call successors, (61) [2023-11-29 01:41:54,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:42:00,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:42:04,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]