./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 355537246d5dfb9690a92cc5d0cbf014736bcc62122f38f5559ea0fbf5331d1c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 21:02:52,256 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 21:02:52,373 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-21 21:02:52,380 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 21:02:52,380 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 21:02:52,428 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 21:02:52,429 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 21:02:52,430 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 21:02:52,431 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 21:02:52,438 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 21:02:52,438 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 21:02:52,439 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 21:02:52,440 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 21:02:52,440 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 21:02:52,441 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 21:02:52,441 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 21:02:52,442 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 21:02:52,442 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 21:02:52,443 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 21:02:52,443 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 21:02:52,444 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 21:02:52,444 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 21:02:52,445 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 21:02:52,445 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 21:02:52,446 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 21:02:52,446 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 21:02:52,447 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 21:02:52,447 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 21:02:52,448 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:02:52,448 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 21:02:52,449 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 21:02:52,450 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 21:02:52,450 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 21:02:52,450 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 21:02:52,450 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 21:02:52,450 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 21:02:52,451 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 21:02:52,451 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 21:02:52,451 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 21:02:52,451 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_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 355537246d5dfb9690a92cc5d0cbf014736bcc62122f38f5559ea0fbf5331d1c [2023-11-21 21:02:52,778 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 21:02:52,801 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 21:02:52,815 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 21:02:52,816 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 21:02:52,818 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 21:02:52,820 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i [2023-11-21 21:02:55,972 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 21:02:56,585 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 21:02:56,586 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i [2023-11-21 21:02:56,638 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/data/fde0729ca/6c2b5ad781e74f11a3dc319b35a2d0c0/FLAG8d92c8208 [2023-11-21 21:02:56,657 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/data/fde0729ca/6c2b5ad781e74f11a3dc319b35a2d0c0 [2023-11-21 21:02:56,663 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 21:02:56,665 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 21:02:56,668 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 21:02:56,668 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 21:02:56,673 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 21:02:56,674 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:02:56" (1/1) ... [2023-11-21 21:02:56,675 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cb32493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:56, skipping insertion in model container [2023-11-21 21:02:56,675 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:02:56" (1/1) ... [2023-11-21 21:02:56,916 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 21:02:57,239 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_702eedb5-625b-44c4-9c99-e7996c5d839a/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i[4506,4519] [2023-11-21 21:02:57,248 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_702eedb5-625b-44c4-9c99-e7996c5d839a/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i[4566,4579] [2023-11-21 21:02:58,265 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:58,265 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:58,266 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:58,267 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:58,269 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:58,296 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:58,297 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:58,299 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:58,300 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:58,302 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:58,303 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:58,304 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:58,305 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:58,783 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-21 21:02:58,786 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-21 21:02:58,788 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-21 21:02:58,790 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-21 21:02:58,792 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-21 21:02:58,794 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-21 21:02:58,795 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-21 21:02:58,796 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-21 21:02:58,810 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-21 21:02:58,811 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-21 21:02:59,046 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,047 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,053 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,060 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,126 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,127 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,127 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,128 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,128 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,129 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,129 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,130 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,130 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,131 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,131 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,132 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,132 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,135 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,136 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,136 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,136 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,140 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,141 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,148 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,149 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,150 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,165 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:02:59,229 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 21:02:59,260 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_702eedb5-625b-44c4-9c99-e7996c5d839a/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i[4506,4519] [2023-11-21 21:02:59,260 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_702eedb5-625b-44c4-9c99-e7996c5d839a/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i[4566,4579] [2023-11-21 21:02:59,323 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,324 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,325 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,325 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,326 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,333 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,333 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,334 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,335 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,336 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,337 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,337 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,338 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,383 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-21 21:02:59,384 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-21 21:02:59,385 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-21 21:02:59,386 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-21 21:02:59,387 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-21 21:02:59,387 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-21 21:02:59,388 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-21 21:02:59,388 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-21 21:02:59,389 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-21 21:02:59,390 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-21 21:02:59,427 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,428 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,429 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,434 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,440 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7776-7787] [2023-11-21 21:02:59,477 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,480 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,488 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,488 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,488 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,489 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,489 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,490 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,490 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,491 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,491 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,491 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,492 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,493 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,493 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,496 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,496 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,499 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,502 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,508 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,510 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,511 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:02:59,524 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:02:59,869 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:02:59,869 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:02:59,870 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:02:59,871 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:02:59,871 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:02:59,871 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:02:59,872 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:02:59,872 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:02:59,872 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:02:59,873 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:02:59,873 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:02:59,873 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:02:59,873 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:02:59,873 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:02:59,873 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:02:59,881 INFO L206 MainTranslator]: Completed translation [2023-11-21 21:02:59,882 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:59 WrapperNode [2023-11-21 21:02:59,883 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 21:02:59,884 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 21:02:59,884 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 21:02:59,886 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 21:02:59,894 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:59" (1/1) ... [2023-11-21 21:03:00,002 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:59" (1/1) ... [2023-11-21 21:03:00,076 INFO L138 Inliner]: procedures = 696, calls = 1888, calls flagged for inlining = 60, calls inlined = 15, statements flattened = 925 [2023-11-21 21:03:00,077 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 21:03:00,078 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 21:03:00,078 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 21:03:00,078 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 21:03:00,090 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:59" (1/1) ... [2023-11-21 21:03:00,090 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:59" (1/1) ... [2023-11-21 21:03:00,097 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:59" (1/1) ... [2023-11-21 21:03:00,195 INFO L187 HeapSplitter]: Split 335 memory accesses to 7 slices as follows [2, 3, 17, 18, 236, 56, 3] [2023-11-21 21:03:00,203 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:59" (1/1) ... [2023-11-21 21:03:00,203 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:59" (1/1) ... [2023-11-21 21:03:00,251 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:59" (1/1) ... [2023-11-21 21:03:00,257 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:59" (1/1) ... [2023-11-21 21:03:00,267 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:59" (1/1) ... [2023-11-21 21:03:00,275 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:59" (1/1) ... [2023-11-21 21:03:00,291 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 21:03:00,292 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 21:03:00,292 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 21:03:00,292 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 21:03:00,293 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:59" (1/1) ... [2023-11-21 21:03:00,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:03:00,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:03:00,341 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 21:03:00,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 21:03:00,385 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_either [2023-11-21 21:03:00,386 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_either [2023-11-21 21:03:00,386 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2023-11-21 21:03:00,386 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2023-11-21 21:03:00,386 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-11-21 21:03:00,386 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-11-21 21:03:00,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 21:03:00,387 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-11-21 21:03:00,387 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-11-21 21:03:00,387 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-21 21:03:00,387 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-21 21:03:00,388 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-21 21:03:00,388 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-21 21:03:00,388 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2023-11-21 21:03:00,388 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2023-11-21 21:03:00,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-21 21:03:00,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-21 21:03:00,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-21 21:03:00,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-21 21:03:00,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-21 21:03:00,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-21 21:03:00,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-21 21:03:00,390 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-21 21:03:00,390 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-21 21:03:00,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-21 21:03:00,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-21 21:03:00,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 21:03:00,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 21:03:00,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-21 21:03:00,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-21 21:03:00,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-21 21:03:00,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-21 21:03:00,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-21 21:03:00,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-21 21:03:00,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-21 21:03:00,397 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2023-11-21 21:03:00,397 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2023-11-21 21:03:00,397 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-21 21:03:00,397 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-21 21:03:00,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 21:03:00,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 21:03:00,399 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-21 21:03:00,399 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-21 21:03:00,400 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-21 21:03:00,408 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-21 21:03:00,409 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-21 21:03:00,409 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-21 21:03:00,409 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2023-11-21 21:03:00,409 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2023-11-21 21:03:00,409 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2023-11-21 21:03:00,410 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2023-11-21 21:03:00,410 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 21:03:00,410 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 21:03:00,410 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-21 21:03:00,410 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-21 21:03:00,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 21:03:00,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-21 21:03:00,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-21 21:03:00,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-21 21:03:00,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-21 21:03:00,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-21 21:03:00,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-21 21:03:00,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-21 21:03:00,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-21 21:03:00,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-21 21:03:00,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-21 21:03:00,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-21 21:03:00,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-21 21:03:00,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-21 21:03:00,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-21 21:03:00,412 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2023-11-21 21:03:00,412 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2023-11-21 21:03:00,412 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-21 21:03:00,412 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-21 21:03:00,412 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-21 21:03:00,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-21 21:03:00,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-21 21:03:00,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-21 21:03:00,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-21 21:03:00,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-21 21:03:00,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-21 21:03:00,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-21 21:03:00,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-21 21:03:00,413 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-11-21 21:03:00,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-11-21 21:03:00,414 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2023-11-21 21:03:00,414 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2023-11-21 21:03:00,416 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-21 21:03:00,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-21 21:03:00,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 21:03:00,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-21 21:03:00,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-21 21:03:00,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-21 21:03:00,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-21 21:03:00,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-21 21:03:00,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-21 21:03:00,877 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 21:03:00,880 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 21:03:02,600 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 21:03:02,964 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 21:03:02,965 INFO L308 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-21 21:03:02,967 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:03:02 BoogieIcfgContainer [2023-11-21 21:03:02,967 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 21:03:02,970 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 21:03:02,970 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 21:03:02,973 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 21:03:02,973 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:02:56" (1/3) ... [2023-11-21 21:03:02,974 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@488d8757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:03:02, skipping insertion in model container [2023-11-21 21:03:02,974 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:59" (2/3) ... [2023-11-21 21:03:02,976 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@488d8757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:03:02, skipping insertion in model container [2023-11-21 21:03:02,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:03:02" (3/3) ... [2023-11-21 21:03:02,978 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_either_harness.i [2023-11-21 21:03:02,998 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 21:03:02,999 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-21 21:03:03,075 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 21:03:03,086 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;@263cb238, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 21:03:03,087 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-21 21:03:03,093 INFO L276 IsEmpty]: Start isEmpty. Operand has 291 states, 151 states have (on average 1.2251655629139073) internal successors, (185), 154 states have internal predecessors, (185), 113 states have call successors, (113), 24 states have call predecessors, (113), 24 states have return successors, (113), 113 states have call predecessors, (113), 113 states have call successors, (113) [2023-11-21 21:03:03,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-21 21:03:03,112 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:03:03,113 INFO L195 NwaCegarLoop]: trace histogram [7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:03:03,113 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:03:03,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:03:03,121 INFO L85 PathProgramCache]: Analyzing trace with hash -897961155, now seen corresponding path program 1 times [2023-11-21 21:03:03,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:03:03,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108508223] [2023-11-21 21:03:03,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:03,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:03:03,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:04,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:04,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:04,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 21:03:04,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:04,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 21:03:04,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:04,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 21:03:04,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:04,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:03:04,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:04,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 21:03:04,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:04,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-21 21:03:04,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:04,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:03:04,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:04,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 21:03:04,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:04,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-21 21:03:04,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:04,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-21 21:03:04,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:04,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-21 21:03:04,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:04,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-21 21:03:04,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:04,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-21 21:03:04,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:04,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-21 21:03:04,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:05,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-21 21:03:05,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:05,030 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-21 21:03:05,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:03:05,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108508223] [2023-11-21 21:03:05,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108508223] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 21:03:05,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016379299] [2023-11-21 21:03:05,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:05,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:03:05,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:03:05,045 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:03:05,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 21:03:05,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:05,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 2418 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 21:03:05,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:03:05,812 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-11-21 21:03:05,812 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:03:05,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016379299] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:03:05,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 21:03:05,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-11-21 21:03:05,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172864188] [2023-11-21 21:03:05,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:03:05,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:03:05,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:03:05,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:03:05,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-21 21:03:05,867 INFO L87 Difference]: Start difference. First operand has 291 states, 151 states have (on average 1.2251655629139073) internal successors, (185), 154 states have internal predecessors, (185), 113 states have call successors, (113), 24 states have call predecessors, (113), 24 states have return successors, (113), 113 states have call predecessors, (113), 113 states have call successors, (113) Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-21 21:03:06,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:03:06,346 INFO L93 Difference]: Finished difference Result 530 states and 788 transitions. [2023-11-21 21:03:06,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:03:06,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 80 [2023-11-21 21:03:06,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:03:06,368 INFO L225 Difference]: With dead ends: 530 [2023-11-21 21:03:06,368 INFO L226 Difference]: Without dead ends: 289 [2023-11-21 21:03:06,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-21 21:03:06,379 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 0 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 21:03:06,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 725 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 21:03:06,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-11-21 21:03:06,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2023-11-21 21:03:06,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 151 states have (on average 1.1986754966887416) internal successors, (181), 153 states have internal predecessors, (181), 113 states have call successors, (113), 24 states have call predecessors, (113), 23 states have return successors, (111), 111 states have call predecessors, (111), 111 states have call successors, (111) [2023-11-21 21:03:06,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 405 transitions. [2023-11-21 21:03:06,490 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 405 transitions. Word has length 80 [2023-11-21 21:03:06,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:03:06,493 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 405 transitions. [2023-11-21 21:03:06,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-21 21:03:06,493 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 405 transitions. [2023-11-21 21:03:06,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-21 21:03:06,506 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:03:06,506 INFO L195 NwaCegarLoop]: trace histogram [9, 4, 4, 4, 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] [2023-11-21 21:03:06,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 21:03:06,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-21 21:03:06,730 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:03:06,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:03:06,731 INFO L85 PathProgramCache]: Analyzing trace with hash -2022117252, now seen corresponding path program 1 times [2023-11-21 21:03:06,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:03:06,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731236941] [2023-11-21 21:03:06,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:06,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:03:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:07,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:07,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:07,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 21:03:07,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:07,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 21:03:07,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:07,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 21:03:07,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:07,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:03:07,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:07,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 21:03:07,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:07,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-21 21:03:07,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:07,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:03:07,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:07,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 21:03:07,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:07,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-21 21:03:07,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:07,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-21 21:03:07,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:07,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-21 21:03:07,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:07,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-21 21:03:07,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:07,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-21 21:03:07,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:07,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-21 21:03:07,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:07,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-21 21:03:07,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:07,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-21 21:03:07,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:07,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-21 21:03:07,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:07,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-21 21:03:07,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:07,899 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-11-21 21:03:07,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:03:07,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731236941] [2023-11-21 21:03:07,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731236941] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 21:03:07,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935584163] [2023-11-21 21:03:07,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:07,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:03:07,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:03:07,901 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:03:07,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 21:03:08,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:08,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 2620 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 21:03:08,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:03:08,702 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-21 21:03:08,703 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:03:08,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935584163] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:03:08,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 21:03:08,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-21 21:03:08,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146857136] [2023-11-21 21:03:08,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:03:08,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 21:03:08,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:03:08,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 21:03:08,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-21 21:03:08,706 INFO L87 Difference]: Start difference. First operand 289 states and 405 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-11-21 21:03:09,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:03:09,209 INFO L93 Difference]: Finished difference Result 550 states and 781 transitions. [2023-11-21 21:03:09,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 21:03:09,210 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 95 [2023-11-21 21:03:09,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:03:09,215 INFO L225 Difference]: With dead ends: 550 [2023-11-21 21:03:09,216 INFO L226 Difference]: Without dead ends: 291 [2023-11-21 21:03:09,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-21 21:03:09,219 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 32 mSDsluCounter, 978 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 21:03:09,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 1324 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 21:03:09,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2023-11-21 21:03:09,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2023-11-21 21:03:09,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 152 states have (on average 1.1973684210526316) internal successors, (182), 155 states have internal predecessors, (182), 113 states have call successors, (113), 24 states have call predecessors, (113), 24 states have return successors, (119), 111 states have call predecessors, (119), 111 states have call successors, (119) [2023-11-21 21:03:09,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 414 transitions. [2023-11-21 21:03:09,246 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 414 transitions. Word has length 95 [2023-11-21 21:03:09,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:03:09,247 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 414 transitions. [2023-11-21 21:03:09,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-11-21 21:03:09,247 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 414 transitions. [2023-11-21 21:03:09,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-21 21:03:09,250 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:03:09,250 INFO L195 NwaCegarLoop]: trace histogram [9, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:03:09,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 21:03:09,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-21 21:03:09,474 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:03:09,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:03:09,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1893508689, now seen corresponding path program 1 times [2023-11-21 21:03:09,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:03:09,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929617032] [2023-11-21 21:03:09,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:09,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:03:09,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:10,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:10,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:10,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 21:03:10,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:10,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 21:03:10,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:10,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 21:03:10,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:10,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:03:10,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:10,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 21:03:10,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:10,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-21 21:03:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:10,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:03:10,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:10,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 21:03:10,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:10,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-21 21:03:10,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:10,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:03:10,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:10,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-21 21:03:10,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:10,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-21 21:03:10,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:10,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-21 21:03:10,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:10,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-21 21:03:10,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:10,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-21 21:03:10,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:10,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-21 21:03:10,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:10,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-21 21:03:10,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:10,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-21 21:03:10,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:10,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-21 21:03:10,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:10,922 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-11-21 21:03:10,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:03:10,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929617032] [2023-11-21 21:03:10,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929617032] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 21:03:10,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541474285] [2023-11-21 21:03:10,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:10,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:03:10,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:03:10,928 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:03:10,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 21:03:11,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:11,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 2718 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-21 21:03:11,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:03:11,744 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-21 21:03:11,744 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:03:11,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541474285] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:03:11,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 21:03:11,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2023-11-21 21:03:11,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816573397] [2023-11-21 21:03:11,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:03:11,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 21:03:11,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:03:11,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 21:03:11,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2023-11-21 21:03:11,752 INFO L87 Difference]: Start difference. First operand 291 states and 414 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 4 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2023-11-21 21:03:12,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:03:12,636 INFO L93 Difference]: Finished difference Result 565 states and 824 transitions. [2023-11-21 21:03:12,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 21:03:12,637 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 4 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 103 [2023-11-21 21:03:12,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:03:12,641 INFO L225 Difference]: With dead ends: 565 [2023-11-21 21:03:12,641 INFO L226 Difference]: Without dead ends: 304 [2023-11-21 21:03:12,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2023-11-21 21:03:12,644 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 50 mSDsluCounter, 1595 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 1931 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-21 21:03:12,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 1931 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-21 21:03:12,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2023-11-21 21:03:12,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 302. [2023-11-21 21:03:12,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 160 states have (on average 1.2) internal successors, (192), 163 states have internal predecessors, (192), 115 states have call successors, (115), 24 states have call predecessors, (115), 25 states have return successors, (132), 114 states have call predecessors, (132), 113 states have call successors, (132) [2023-11-21 21:03:12,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 439 transitions. [2023-11-21 21:03:12,684 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 439 transitions. Word has length 103 [2023-11-21 21:03:12,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:03:12,684 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 439 transitions. [2023-11-21 21:03:12,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 4 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2023-11-21 21:03:12,685 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 439 transitions. [2023-11-21 21:03:12,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-21 21:03:12,687 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:03:12,687 INFO L195 NwaCegarLoop]: trace histogram [9, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:03:12,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-21 21:03:12,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-21 21:03:12,905 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:03:12,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:03:12,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1502403908, now seen corresponding path program 1 times [2023-11-21 21:03:12,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:03:12,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352162291] [2023-11-21 21:03:12,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:12,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:03:13,023 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 21:03:13,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [905107235] [2023-11-21 21:03:13,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:13,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:03:13,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:03:13,025 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:03:13,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 21:03:13,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:13,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 2898 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-21 21:03:13,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:03:13,790 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-21 21:03:13,790 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:03:13,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:03:13,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352162291] [2023-11-21 21:03:13,790 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 21:03:13,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905107235] [2023-11-21 21:03:13,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905107235] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:03:13,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:03:13,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 21:03:13,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183742536] [2023-11-21 21:03:13,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:03:13,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 21:03:13,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:03:13,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 21:03:13,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-21 21:03:13,793 INFO L87 Difference]: Start difference. First operand 302 states and 439 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2023-11-21 21:03:14,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:03:14,537 INFO L93 Difference]: Finished difference Result 580 states and 860 transitions. [2023-11-21 21:03:14,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 21:03:14,538 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 112 [2023-11-21 21:03:14,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:03:14,542 INFO L225 Difference]: With dead ends: 580 [2023-11-21 21:03:14,542 INFO L226 Difference]: Without dead ends: 308 [2023-11-21 21:03:14,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-21 21:03:14,545 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 39 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 1643 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-21 21:03:14,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 1643 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-21 21:03:14,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2023-11-21 21:03:14,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 302. [2023-11-21 21:03:14,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 160 states have (on average 1.2) internal successors, (192), 163 states have internal predecessors, (192), 115 states have call successors, (115), 24 states have call predecessors, (115), 25 states have return successors, (132), 114 states have call predecessors, (132), 113 states have call successors, (132) [2023-11-21 21:03:14,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 439 transitions. [2023-11-21 21:03:14,571 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 439 transitions. Word has length 112 [2023-11-21 21:03:14,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:03:14,572 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 439 transitions. [2023-11-21 21:03:14,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2023-11-21 21:03:14,572 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 439 transitions. [2023-11-21 21:03:14,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-21 21:03:14,574 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:03:14,574 INFO L195 NwaCegarLoop]: trace histogram [9, 4, 4, 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] [2023-11-21 21:03:14,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-21 21:03:14,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:03:14,800 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:03:14,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:03:14,800 INFO L85 PathProgramCache]: Analyzing trace with hash -183101083, now seen corresponding path program 1 times [2023-11-21 21:03:14,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:03:14,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149174420] [2023-11-21 21:03:14,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:14,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:03:14,907 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 21:03:14,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [843516854] [2023-11-21 21:03:14,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:14,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:03:14,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:03:14,909 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:03:14,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-21 21:03:15,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:15,666 INFO L262 TraceCheckSpWp]: Trace formula consists of 3000 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-21 21:03:15,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:03:15,752 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-11-21 21:03:15,752 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:03:15,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:03:15,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149174420] [2023-11-21 21:03:15,753 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 21:03:15,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843516854] [2023-11-21 21:03:15,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843516854] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:03:15,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:03:15,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-21 21:03:15,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528776313] [2023-11-21 21:03:15,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:03:15,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 21:03:15,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:03:15,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 21:03:15,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-21 21:03:15,756 INFO L87 Difference]: Start difference. First operand 302 states and 439 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 5 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2023-11-21 21:03:16,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:03:16,720 INFO L93 Difference]: Finished difference Result 582 states and 857 transitions. [2023-11-21 21:03:16,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 21:03:16,721 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 5 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) Word has length 120 [2023-11-21 21:03:16,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:03:16,724 INFO L225 Difference]: With dead ends: 582 [2023-11-21 21:03:16,724 INFO L226 Difference]: Without dead ends: 310 [2023-11-21 21:03:16,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-21 21:03:16,727 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 62 mSDsluCounter, 1896 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 2228 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-21 21:03:16,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 2228 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-21 21:03:16,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2023-11-21 21:03:16,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 302. [2023-11-21 21:03:16,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 160 states have (on average 1.2) internal successors, (192), 163 states have internal predecessors, (192), 115 states have call successors, (115), 24 states have call predecessors, (115), 25 states have return successors, (132), 114 states have call predecessors, (132), 113 states have call successors, (132) [2023-11-21 21:03:16,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 439 transitions. [2023-11-21 21:03:16,751 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 439 transitions. Word has length 120 [2023-11-21 21:03:16,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:03:16,751 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 439 transitions. [2023-11-21 21:03:16,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 5 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2023-11-21 21:03:16,752 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 439 transitions. [2023-11-21 21:03:16,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-21 21:03:16,754 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:03:16,754 INFO L195 NwaCegarLoop]: trace histogram [9, 4, 4, 3, 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] [2023-11-21 21:03:16,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-21 21:03:16,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:03:16,977 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:03:16,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:03:16,978 INFO L85 PathProgramCache]: Analyzing trace with hash 757987094, now seen corresponding path program 1 times [2023-11-21 21:03:16,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:03:16,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202278778] [2023-11-21 21:03:16,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:16,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:03:17,098 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 21:03:17,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1485901222] [2023-11-21 21:03:17,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:17,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:03:17,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:03:17,100 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:03:17,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-21 21:03:17,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:17,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 3180 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-21 21:03:17,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:03:17,962 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-11-21 21:03:17,963 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:03:17,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:03:17,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202278778] [2023-11-21 21:03:17,963 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 21:03:17,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485901222] [2023-11-21 21:03:17,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485901222] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:03:17,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:03:17,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 21:03:17,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205141650] [2023-11-21 21:03:17,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:03:17,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 21:03:17,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:03:17,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 21:03:17,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-21 21:03:17,966 INFO L87 Difference]: Start difference. First operand 302 states and 439 transitions. Second operand has 7 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-21 21:03:18,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:03:18,693 INFO L93 Difference]: Finished difference Result 550 states and 813 transitions. [2023-11-21 21:03:18,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 21:03:18,694 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) Word has length 129 [2023-11-21 21:03:18,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:03:18,697 INFO L225 Difference]: With dead ends: 550 [2023-11-21 21:03:18,697 INFO L226 Difference]: Without dead ends: 304 [2023-11-21 21:03:18,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-21 21:03:18,700 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 78 mSDsluCounter, 1590 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 1932 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-21 21:03:18,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 1932 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-21 21:03:18,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2023-11-21 21:03:18,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2023-11-21 21:03:18,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 161 states have (on average 1.1987577639751552) internal successors, (193), 165 states have internal predecessors, (193), 115 states have call successors, (115), 24 states have call predecessors, (115), 26 states have return successors, (138), 114 states have call predecessors, (138), 113 states have call successors, (138) [2023-11-21 21:03:18,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 446 transitions. [2023-11-21 21:03:18,722 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 446 transitions. Word has length 129 [2023-11-21 21:03:18,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:03:18,722 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 446 transitions. [2023-11-21 21:03:18,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-21 21:03:18,723 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 446 transitions. [2023-11-21 21:03:18,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-11-21 21:03:18,725 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:03:18,725 INFO L195 NwaCegarLoop]: trace histogram [9, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:03:18,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-21 21:03:18,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:03:18,942 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:03:18,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:03:18,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1429254933, now seen corresponding path program 1 times [2023-11-21 21:03:18,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:03:18,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285157322] [2023-11-21 21:03:18,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:18,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:03:19,054 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 21:03:19,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [471017323] [2023-11-21 21:03:19,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:19,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:03:19,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:03:19,058 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:03:19,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-21 21:03:19,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:19,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 3278 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-21 21:03:19,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:03:19,971 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-21 21:03:19,972 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:03:19,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:03:19,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285157322] [2023-11-21 21:03:19,972 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 21:03:19,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471017323] [2023-11-21 21:03:19,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471017323] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:03:19,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:03:19,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-21 21:03:19,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031133899] [2023-11-21 21:03:19,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:03:19,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 21:03:19,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:03:19,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 21:03:19,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-21 21:03:19,975 INFO L87 Difference]: Start difference. First operand 304 states and 446 transitions. Second operand has 9 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 5 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2023-11-21 21:03:21,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:03:21,159 INFO L93 Difference]: Finished difference Result 560 states and 835 transitions. [2023-11-21 21:03:21,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 21:03:21,160 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 5 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) Word has length 137 [2023-11-21 21:03:21,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:03:21,163 INFO L225 Difference]: With dead ends: 560 [2023-11-21 21:03:21,164 INFO L226 Difference]: Without dead ends: 312 [2023-11-21 21:03:21,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-21 21:03:21,167 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 97 mSDsluCounter, 2169 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 2499 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-21 21:03:21,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 2499 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-21 21:03:21,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2023-11-21 21:03:21,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 310. [2023-11-21 21:03:21,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 166 states have (on average 1.1987951807228916) internal successors, (199), 169 states have internal predecessors, (199), 116 states have call successors, (116), 24 states have call predecessors, (116), 26 states have return successors, (139), 116 states have call predecessors, (139), 114 states have call successors, (139) [2023-11-21 21:03:21,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 454 transitions. [2023-11-21 21:03:21,189 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 454 transitions. Word has length 137 [2023-11-21 21:03:21,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:03:21,190 INFO L495 AbstractCegarLoop]: Abstraction has 310 states and 454 transitions. [2023-11-21 21:03:21,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 5 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2023-11-21 21:03:21,191 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 454 transitions. [2023-11-21 21:03:21,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-11-21 21:03:21,193 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:03:21,193 INFO L195 NwaCegarLoop]: trace histogram [9, 4, 4, 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] [2023-11-21 21:03:21,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-21 21:03:21,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:03:21,410 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:03:21,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:03:21,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1698541438, now seen corresponding path program 1 times [2023-11-21 21:03:21,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:03:21,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070655974] [2023-11-21 21:03:21,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:21,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:03:21,527 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 21:03:21,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1068797103] [2023-11-21 21:03:21,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:21,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:03:21,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:03:21,529 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:03:21,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-21 21:03:22,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:22,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 3458 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-21 21:03:22,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:03:22,493 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-21 21:03:22,493 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:03:22,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:03:22,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070655974] [2023-11-21 21:03:22,494 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 21:03:22,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068797103] [2023-11-21 21:03:22,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068797103] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:03:22,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:03:22,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-21 21:03:22,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857489890] [2023-11-21 21:03:22,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:03:22,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 21:03:22,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:03:22,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 21:03:22,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-21 21:03:22,497 INFO L87 Difference]: Start difference. First operand 310 states and 454 transitions. Second operand has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 5 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2023-11-21 21:03:23,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:03:23,436 INFO L93 Difference]: Finished difference Result 570 states and 852 transitions. [2023-11-21 21:03:23,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 21:03:23,437 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 5 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) Word has length 146 [2023-11-21 21:03:23,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:03:23,441 INFO L225 Difference]: With dead ends: 570 [2023-11-21 21:03:23,441 INFO L226 Difference]: Without dead ends: 316 [2023-11-21 21:03:23,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-21 21:03:23,444 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 85 mSDsluCounter, 1903 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 2243 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-21 21:03:23,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 2243 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-21 21:03:23,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2023-11-21 21:03:23,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 310. [2023-11-21 21:03:23,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 166 states have (on average 1.1987951807228916) internal successors, (199), 169 states have internal predecessors, (199), 116 states have call successors, (116), 24 states have call predecessors, (116), 26 states have return successors, (139), 116 states have call predecessors, (139), 114 states have call successors, (139) [2023-11-21 21:03:23,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 454 transitions. [2023-11-21 21:03:23,472 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 454 transitions. Word has length 146 [2023-11-21 21:03:23,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:03:23,473 INFO L495 AbstractCegarLoop]: Abstraction has 310 states and 454 transitions. [2023-11-21 21:03:23,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 5 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2023-11-21 21:03:23,473 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 454 transitions. [2023-11-21 21:03:23,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-11-21 21:03:23,476 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:03:23,477 INFO L195 NwaCegarLoop]: trace histogram [9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-11-21 21:03:23,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-21 21:03:23,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-21 21:03:23,690 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:03:23,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:03:23,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1176317744, now seen corresponding path program 2 times [2023-11-21 21:03:23,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:03:23,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018786249] [2023-11-21 21:03:23,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:23,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:03:23,843 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 21:03:23,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2095805293] [2023-11-21 21:03:23,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 21:03:23,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:03:23,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:03:23,845 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:03:23,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-21 21:03:25,047 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 21:03:25,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 21:03:25,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 3740 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-21 21:03:25,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:03:25,184 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2023-11-21 21:03:25,184 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:03:25,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:03:25,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018786249] [2023-11-21 21:03:25,185 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 21:03:25,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095805293] [2023-11-21 21:03:25,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095805293] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:03:25,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:03:25,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-21 21:03:25,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299606941] [2023-11-21 21:03:25,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:03:25,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 21:03:25,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:03:25,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 21:03:25,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-21 21:03:25,190 INFO L87 Difference]: Start difference. First operand 310 states and 454 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 7 states have internal predecessors, (48), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-21 21:03:26,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:03:26,340 INFO L93 Difference]: Finished difference Result 557 states and 826 transitions. [2023-11-21 21:03:26,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 21:03:26,341 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 7 states have internal predecessors, (48), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) Word has length 163 [2023-11-21 21:03:26,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:03:26,344 INFO L225 Difference]: With dead ends: 557 [2023-11-21 21:03:26,345 INFO L226 Difference]: Without dead ends: 312 [2023-11-21 21:03:26,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-21 21:03:26,347 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 105 mSDsluCounter, 2209 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 2547 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-21 21:03:26,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 2547 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-21 21:03:26,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2023-11-21 21:03:26,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2023-11-21 21:03:26,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 167 states have (on average 1.1976047904191616) internal successors, (200), 171 states have internal predecessors, (200), 116 states have call successors, (116), 24 states have call predecessors, (116), 27 states have return successors, (143), 116 states have call predecessors, (143), 114 states have call successors, (143) [2023-11-21 21:03:26,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 459 transitions. [2023-11-21 21:03:26,370 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 459 transitions. Word has length 163 [2023-11-21 21:03:26,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:03:26,371 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 459 transitions. [2023-11-21 21:03:26,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 7 states have internal predecessors, (48), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-21 21:03:26,371 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 459 transitions. [2023-11-21 21:03:26,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-11-21 21:03:26,374 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:03:26,375 INFO L195 NwaCegarLoop]: trace histogram [9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 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] [2023-11-21 21:03:26,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-21 21:03:26,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:03:26,591 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:03:26,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:03:26,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1839845148, now seen corresponding path program 1 times [2023-11-21 21:03:26,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:03:26,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378026790] [2023-11-21 21:03:26,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:26,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:03:26,757 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 21:03:26,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [788345733] [2023-11-21 21:03:26,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:26,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:03:26,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:03:26,762 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:03:26,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-21 21:03:27,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:27,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 4296 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-21 21:03:27,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:03:27,939 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2023-11-21 21:03:27,939 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:03:27,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:03:27,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378026790] [2023-11-21 21:03:27,939 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 21:03:27,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788345733] [2023-11-21 21:03:27,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788345733] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:03:27,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:03:27,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-21 21:03:27,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196627095] [2023-11-21 21:03:27,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:03:27,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-21 21:03:27,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:03:27,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-21 21:03:27,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-21 21:03:27,942 INFO L87 Difference]: Start difference. First operand 312 states and 459 transitions. Second operand has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 6 states have call successors, (28), 4 states have call predecessors, (28), 3 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) [2023-11-21 21:03:29,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:03:29,203 INFO L93 Difference]: Finished difference Result 562 states and 837 transitions. [2023-11-21 21:03:29,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-21 21:03:29,204 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 6 states have call successors, (28), 4 states have call predecessors, (28), 3 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) Word has length 197 [2023-11-21 21:03:29,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:03:29,207 INFO L225 Difference]: With dead ends: 562 [2023-11-21 21:03:29,208 INFO L226 Difference]: Without dead ends: 315 [2023-11-21 21:03:29,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-11-21 21:03:29,211 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 115 mSDsluCounter, 2514 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 2850 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-21 21:03:29,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 2850 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-21 21:03:29,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2023-11-21 21:03:29,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 313. [2023-11-21 21:03:29,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 168 states have (on average 1.1964285714285714) internal successors, (201), 172 states have internal predecessors, (201), 116 states have call successors, (116), 24 states have call predecessors, (116), 27 states have return successors, (143), 116 states have call predecessors, (143), 114 states have call successors, (143) [2023-11-21 21:03:29,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 460 transitions. [2023-11-21 21:03:29,232 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 460 transitions. Word has length 197 [2023-11-21 21:03:29,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:03:29,232 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 460 transitions. [2023-11-21 21:03:29,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 6 states have call successors, (28), 4 states have call predecessors, (28), 3 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) [2023-11-21 21:03:29,233 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 460 transitions. [2023-11-21 21:03:29,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-21 21:03:29,236 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:03:29,236 INFO L195 NwaCegarLoop]: trace histogram [11, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:03:29,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-21 21:03:29,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-21 21:03:29,455 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:03:29,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:03:29,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1523306472, now seen corresponding path program 1 times [2023-11-21 21:03:29,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:03:29,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201950622] [2023-11-21 21:03:29,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:29,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:03:29,597 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 21:03:29,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [382620420] [2023-11-21 21:03:29,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:29,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:03:29,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:03:29,599 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:03:29,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-21 21:03:30,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:30,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 3827 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-21 21:03:30,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:03:30,668 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-11-21 21:03:30,668 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:03:30,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:03:30,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201950622] [2023-11-21 21:03:30,669 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 21:03:30,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382620420] [2023-11-21 21:03:30,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382620420] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:03:30,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:03:30,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-21 21:03:30,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390233131] [2023-11-21 21:03:30,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:03:30,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 21:03:30,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:03:30,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 21:03:30,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-21 21:03:30,672 INFO L87 Difference]: Start difference. First operand 313 states and 460 transitions. Second operand has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) [2023-11-21 21:03:31,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:03:31,617 INFO L93 Difference]: Finished difference Result 536 states and 791 transitions. [2023-11-21 21:03:31,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 21:03:31,622 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) Word has length 176 [2023-11-21 21:03:31,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:03:31,628 INFO L225 Difference]: With dead ends: 536 [2023-11-21 21:03:31,628 INFO L226 Difference]: Without dead ends: 315 [2023-11-21 21:03:31,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-21 21:03:31,631 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 90 mSDsluCounter, 1902 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 2241 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-21 21:03:31,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 2241 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-21 21:03:31,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2023-11-21 21:03:31,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2023-11-21 21:03:31,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 169 states have (on average 1.1952662721893492) internal successors, (202), 174 states have internal predecessors, (202), 116 states have call successors, (116), 24 states have call predecessors, (116), 28 states have return successors, (145), 116 states have call predecessors, (145), 114 states have call successors, (145) [2023-11-21 21:03:31,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 463 transitions. [2023-11-21 21:03:31,661 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 463 transitions. Word has length 176 [2023-11-21 21:03:31,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:03:31,662 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 463 transitions. [2023-11-21 21:03:31,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) [2023-11-21 21:03:31,662 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 463 transitions. [2023-11-21 21:03:31,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-11-21 21:03:31,665 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:03:31,665 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 4, 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] [2023-11-21 21:03:31,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-21 21:03:31,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:03:31,886 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:03:31,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:03:31,886 INFO L85 PathProgramCache]: Analyzing trace with hash 962829282, now seen corresponding path program 1 times [2023-11-21 21:03:31,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:03:31,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656649160] [2023-11-21 21:03:31,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:31,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:03:31,997 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 21:03:31,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [418404802] [2023-11-21 21:03:31,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:31,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:03:31,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:03:31,999 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:03:32,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-21 21:03:33,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:33,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 3745 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-21 21:03:33,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:03:33,185 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2023-11-21 21:03:33,186 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:03:33,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:03:33,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656649160] [2023-11-21 21:03:33,186 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 21:03:33,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418404802] [2023-11-21 21:03:33,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418404802] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:03:33,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:03:33,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-21 21:03:33,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773030344] [2023-11-21 21:03:33,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:03:33,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-21 21:03:33,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:03:33,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-21 21:03:33,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-21 21:03:33,191 INFO L87 Difference]: Start difference. First operand 315 states and 463 transitions. Second operand has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 6 states have call successors, (30), 3 states have call predecessors, (30), 4 states have return successors, (27), 5 states have call predecessors, (27), 6 states have call successors, (27) [2023-11-21 21:03:34,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:03:34,486 INFO L93 Difference]: Finished difference Result 574 states and 852 transitions. [2023-11-21 21:03:34,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-21 21:03:34,487 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 6 states have call successors, (30), 3 states have call predecessors, (30), 4 states have return successors, (27), 5 states have call predecessors, (27), 6 states have call successors, (27) Word has length 175 [2023-11-21 21:03:34,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:03:34,490 INFO L225 Difference]: With dead ends: 574 [2023-11-21 21:03:34,491 INFO L226 Difference]: Without dead ends: 315 [2023-11-21 21:03:34,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-11-21 21:03:34,494 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 108 mSDsluCounter, 2468 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 2796 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-21 21:03:34,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 2796 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-21 21:03:34,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2023-11-21 21:03:34,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 307. [2023-11-21 21:03:34,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 163 states have (on average 1.196319018404908) internal successors, (195), 168 states have internal predecessors, (195), 115 states have call successors, (115), 24 states have call predecessors, (115), 27 states have return successors, (136), 114 states have call predecessors, (136), 113 states have call successors, (136) [2023-11-21 21:03:34,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 446 transitions. [2023-11-21 21:03:34,516 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 446 transitions. Word has length 175 [2023-11-21 21:03:34,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:03:34,516 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 446 transitions. [2023-11-21 21:03:34,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 6 states have call successors, (30), 3 states have call predecessors, (30), 4 states have return successors, (27), 5 states have call predecessors, (27), 6 states have call successors, (27) [2023-11-21 21:03:34,517 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 446 transitions. [2023-11-21 21:03:34,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-11-21 21:03:34,520 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:03:34,521 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-11-21 21:03:34,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-21 21:03:34,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:03:34,730 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:03:34,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:03:34,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1859499261, now seen corresponding path program 2 times [2023-11-21 21:03:34,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:03:34,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364186745] [2023-11-21 21:03:34,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:34,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:03:34,844 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 21:03:34,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1220391369] [2023-11-21 21:03:34,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 21:03:34,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:03:34,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:03:34,846 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:03:34,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-21 21:03:36,094 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 21:03:36,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 21:03:36,112 INFO L262 TraceCheckSpWp]: Trace formula consists of 3925 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-21 21:03:36,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:03:36,227 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2023-11-21 21:03:36,227 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:03:36,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:03:36,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364186745] [2023-11-21 21:03:36,228 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 21:03:36,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220391369] [2023-11-21 21:03:36,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220391369] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:03:36,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:03:36,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-21 21:03:36,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195098761] [2023-11-21 21:03:36,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:03:36,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-21 21:03:36,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:03:36,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-21 21:03:36,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-21 21:03:36,231 INFO L87 Difference]: Start difference. First operand 307 states and 446 transitions. Second operand has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 6 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) [2023-11-21 21:03:37,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:03:37,443 INFO L93 Difference]: Finished difference Result 533 states and 783 transitions. [2023-11-21 21:03:37,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 21:03:37,444 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 6 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) Word has length 184 [2023-11-21 21:03:37,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:03:37,447 INFO L225 Difference]: With dead ends: 533 [2023-11-21 21:03:37,448 INFO L226 Difference]: Without dead ends: 318 [2023-11-21 21:03:37,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-11-21 21:03:37,450 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 104 mSDsluCounter, 2501 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 2834 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-21 21:03:37,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 2834 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-21 21:03:37,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2023-11-21 21:03:37,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 316. [2023-11-21 21:03:37,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 170 states have (on average 1.1941176470588235) internal successors, (203), 175 states have internal predecessors, (203), 116 states have call successors, (116), 24 states have call predecessors, (116), 28 states have return successors, (141), 116 states have call predecessors, (141), 114 states have call successors, (141) [2023-11-21 21:03:37,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 460 transitions. [2023-11-21 21:03:37,478 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 460 transitions. Word has length 184 [2023-11-21 21:03:37,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:03:37,479 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 460 transitions. [2023-11-21 21:03:37,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 6 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) [2023-11-21 21:03:37,480 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 460 transitions. [2023-11-21 21:03:37,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-21 21:03:37,485 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:03:37,485 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:03:37,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-21 21:03:37,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:03:37,706 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:03:37,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:03:37,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1532224240, now seen corresponding path program 3 times [2023-11-21 21:03:37,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:03:37,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884810258] [2023-11-21 21:03:37,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:37,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:03:37,829 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 21:03:37,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [761413868] [2023-11-21 21:03:37,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-21 21:03:37,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:03:37,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:03:37,831 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:03:37,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-21 21:03:38,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-21 21:03:38,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 21:03:38,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 1971 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-21 21:03:38,665 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:03:38,707 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-11-21 21:03:38,707 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:03:38,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:03:38,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884810258] [2023-11-21 21:03:38,708 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 21:03:38,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761413868] [2023-11-21 21:03:38,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761413868] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:03:38,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:03:38,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 21:03:38,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569230474] [2023-11-21 21:03:38,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:03:38,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 21:03:38,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:03:38,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 21:03:38,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 21:03:38,711 INFO L87 Difference]: Start difference. First operand 316 states and 460 transitions. Second operand has 5 states, 3 states have (on average 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-11-21 21:03:39,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:03:39,280 INFO L93 Difference]: Finished difference Result 564 states and 839 transitions. [2023-11-21 21:03:39,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 21:03:39,280 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 193 [2023-11-21 21:03:39,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:03:39,284 INFO L225 Difference]: With dead ends: 564 [2023-11-21 21:03:39,284 INFO L226 Difference]: Without dead ends: 316 [2023-11-21 21:03:39,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 21:03:39,287 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 0 mSDsluCounter, 977 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1313 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-21 21:03:39,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1313 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-21 21:03:39,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2023-11-21 21:03:39,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 316. [2023-11-21 21:03:39,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 170 states have (on average 1.1941176470588235) internal successors, (203), 175 states have internal predecessors, (203), 116 states have call successors, (116), 24 states have call predecessors, (116), 28 states have return successors, (140), 116 states have call predecessors, (140), 114 states have call successors, (140) [2023-11-21 21:03:39,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 459 transitions. [2023-11-21 21:03:39,308 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 459 transitions. Word has length 193 [2023-11-21 21:03:39,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:03:39,309 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 459 transitions. [2023-11-21 21:03:39,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-11-21 21:03:39,309 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 459 transitions. [2023-11-21 21:03:39,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-11-21 21:03:39,312 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:03:39,313 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:03:39,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-21 21:03:39,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-21 21:03:39,526 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:03:39,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:03:39,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1528250199, now seen corresponding path program 4 times [2023-11-21 21:03:39,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:03:39,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632405629] [2023-11-21 21:03:39,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:39,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:03:39,660 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 21:03:39,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1720198416] [2023-11-21 21:03:39,660 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-21 21:03:39,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:03:39,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:03:39,662 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:03:39,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-21 21:03:40,456 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-21 21:03:40,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 21:03:40,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 1798 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-21 21:03:40,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:03:40,512 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2023-11-21 21:03:40,512 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:03:40,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:03:40,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632405629] [2023-11-21 21:03:40,513 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 21:03:40,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720198416] [2023-11-21 21:03:40,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720198416] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:03:40,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:03:40,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 21:03:40,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588382219] [2023-11-21 21:03:40,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:03:40,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 21:03:40,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:03:40,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 21:03:40,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 21:03:40,516 INFO L87 Difference]: Start difference. First operand 316 states and 459 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 3 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-11-21 21:03:40,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:03:40,987 INFO L93 Difference]: Finished difference Result 559 states and 825 transitions. [2023-11-21 21:03:40,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 21:03:40,988 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 3 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 202 [2023-11-21 21:03:40,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:03:40,991 INFO L225 Difference]: With dead ends: 559 [2023-11-21 21:03:40,991 INFO L226 Difference]: Without dead ends: 312 [2023-11-21 21:03:41,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 21:03:41,010 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 15 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 21:03:41,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 1076 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 21:03:41,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2023-11-21 21:03:41,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2023-11-21 21:03:41,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 167 states have (on average 1.18562874251497) internal successors, (198), 171 states have internal predecessors, (198), 116 states have call successors, (116), 24 states have call predecessors, (116), 27 states have return successors, (136), 116 states have call predecessors, (136), 114 states have call successors, (136) [2023-11-21 21:03:41,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 450 transitions. [2023-11-21 21:03:41,032 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 450 transitions. Word has length 202 [2023-11-21 21:03:41,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:03:41,032 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 450 transitions. [2023-11-21 21:03:41,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 3 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-11-21 21:03:41,033 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 450 transitions. [2023-11-21 21:03:41,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-11-21 21:03:41,035 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:03:41,035 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-11-21 21:03:41,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-21 21:03:41,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702eedb5-625b-44c4-9c99-e7996c5d839a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:03:41,258 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:03:41,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:03:41,258 INFO L85 PathProgramCache]: Analyzing trace with hash 546136748, now seen corresponding path program 1 times [2023-11-21 21:03:41,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:03:41,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333289944] [2023-11-21 21:03:41,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:41,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms