./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 1d3eb02e894c2acef7732d0e57c112cc2c197f8f03d7c13822f169fbed4dc5e5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:59:37,206 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:59:37,311 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-06 21:59:37,321 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:59:37,322 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:59:37,352 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:59:37,353 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:59:37,353 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:59:37,354 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:59:37,355 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:59:37,355 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:59:37,356 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:59:37,356 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:59:37,357 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:59:37,358 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:59:37,358 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:59:37,359 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:59:37,359 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:59:37,360 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:59:37,360 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:59:37,361 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:59:37,361 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:59:37,362 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:59:37,362 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:59:37,363 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:59:37,363 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:59:37,364 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:59:37,364 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:59:37,365 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:59:37,365 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:59:37,366 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:59:37,366 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:59:37,366 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:59:37,367 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:59:37,367 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:59:37,368 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:59:37,368 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_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d3eb02e894c2acef7732d0e57c112cc2c197f8f03d7c13822f169fbed4dc5e5 [2023-11-06 21:59:37,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:59:37,689 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:59:37,694 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:59:37,695 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:59:37,697 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:59:37,698 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i [2023-11-06 21:59:40,897 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:59:41,565 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:59:41,568 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i [2023-11-06 21:59:41,622 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/data/1a50f1623/e69a1ae392964e5aa68ec6352b2073fb/FLAG52c0187fa [2023-11-06 21:59:41,654 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/data/1a50f1623/e69a1ae392964e5aa68ec6352b2073fb [2023-11-06 21:59:41,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:59:41,659 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:59:41,661 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:59:41,661 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:59:41,672 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:59:41,673 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:59:41" (1/1) ... [2023-11-06 21:59:41,675 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@627e88c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:41, skipping insertion in model container [2023-11-06 21:59:41,675 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:59:41" (1/1) ... [2023-11-06 21:59:41,896 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:59:42,258 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_634f275d-dd2f-441f-89ed-ec323b7da297/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4504,4517] [2023-11-06 21:59:42,267 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_634f275d-dd2f-441f-89ed-ec323b7da297/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4564,4577] [2023-11-06 21:59:43,617 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:43,618 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:43,619 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:43,621 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:43,623 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:43,645 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:43,646 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:43,649 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:43,651 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:43,654 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:43,656 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:43,657 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:43,657 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,198 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-06 21:59:44,199 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-06 21:59:44,201 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-06 21:59:44,202 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-06 21:59:44,203 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-06 21:59:44,204 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-06 21:59:44,205 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-06 21:59:44,206 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-06 21:59:44,207 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-06 21:59:44,209 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-06 21:59:44,392 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,392 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,398 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,404 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,481 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,481 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,482 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,482 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,482 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,483 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,483 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,484 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,484 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,484 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,485 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,485 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,485 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,488 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,489 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,489 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,490 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,493 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,494 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,501 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,502 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,503 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,517 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:59:44,549 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:59:44,565 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_634f275d-dd2f-441f-89ed-ec323b7da297/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4504,4517] [2023-11-06 21:59:44,565 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_634f275d-dd2f-441f-89ed-ec323b7da297/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4564,4577] [2023-11-06 21:59:44,600 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,601 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,601 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,602 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,602 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,608 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,615 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,616 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,617 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,619 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,620 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,621 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,621 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,684 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-06 21:59:44,688 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-06 21:59:44,690 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-06 21:59:44,691 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-06 21:59:44,695 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-06 21:59:44,695 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-06 21:59:44,696 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-06 21:59:44,696 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-06 21:59:44,697 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-06 21:59:44,697 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-06 21:59:44,742 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,743 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,744 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,749 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,756 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7776-7787] [2023-11-06 21:59:44,784 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,785 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,785 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,786 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,786 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,787 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,787 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,788 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,788 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,788 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,789 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,789 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,790 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,791 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,791 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,791 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,792 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,795 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,795 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,808 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,809 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,810 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 21:59:44,823 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:59:45,241 WARN L672 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:59:45,241 WARN L672 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:59:45,241 WARN L672 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:59:45,242 WARN L672 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:59:45,242 WARN L672 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:59:45,242 WARN L672 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:59:45,242 WARN L672 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:59:45,242 WARN L672 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:59:45,242 WARN L672 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:59:45,243 WARN L672 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:59:45,243 WARN L672 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:59:45,243 WARN L672 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:59:45,243 WARN L672 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:59:45,243 WARN L672 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:59:45,244 WARN L672 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:59:45,251 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:59:45,252 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:45 WrapperNode [2023-11-06 21:59:45,252 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:59:45,253 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:59:45,253 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:59:45,253 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:59:45,259 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:45" (1/1) ... [2023-11-06 21:59:45,368 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:45" (1/1) ... [2023-11-06 21:59:45,481 INFO L138 Inliner]: procedures = 696, calls = 1906, calls flagged for inlining = 59, calls inlined = 14, statements flattened = 845 [2023-11-06 21:59:45,482 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:59:45,483 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:59:45,483 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:59:45,483 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:59:45,496 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:45" (1/1) ... [2023-11-06 21:59:45,497 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:45" (1/1) ... [2023-11-06 21:59:45,522 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:45" (1/1) ... [2023-11-06 21:59:45,528 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:45" (1/1) ... [2023-11-06 21:59:45,598 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:45" (1/1) ... [2023-11-06 21:59:45,626 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:45" (1/1) ... [2023-11-06 21:59:45,634 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:45" (1/1) ... [2023-11-06 21:59:45,650 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:45" (1/1) ... [2023-11-06 21:59:45,664 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:59:45,665 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:59:45,665 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:59:45,665 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:59:45,666 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:45" (1/1) ... [2023-11-06 21:59:45,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:59:45,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:45,698 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:59:45,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:59:45,745 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2023-11-06 21:59:45,745 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2023-11-06 21:59:45,745 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-11-06 21:59:45,746 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-11-06 21:59:45,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:59:45,746 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-11-06 21:59:45,746 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-11-06 21:59:45,746 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-06 21:59:45,747 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-06 21:59:45,747 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-06 21:59:45,747 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-06 21:59:45,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 21:59:45,747 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-06 21:59:45,747 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-06 21:59:45,748 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-06 21:59:45,748 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-06 21:59:45,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 21:59:45,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:59:45,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 21:59:45,749 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-06 21:59:45,749 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-06 21:59:45,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:59:45,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:59:45,750 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-06 21:59:45,750 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-06 21:59:45,750 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2023-11-06 21:59:45,751 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2023-11-06 21:59:45,751 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-06 21:59:45,751 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-06 21:59:45,751 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-06 21:59:45,752 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-06 21:59:45,752 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2023-11-06 21:59:45,752 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2023-11-06 21:59:45,752 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2023-11-06 21:59:45,752 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2023-11-06 21:59:45,753 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 21:59:45,753 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 21:59:45,753 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-06 21:59:45,754 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-06 21:59:45,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:59:45,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 21:59:45,758 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_down [2023-11-06 21:59:45,758 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_down [2023-11-06 21:59:45,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-06 21:59:45,759 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2023-11-06 21:59:45,760 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2023-11-06 21:59:45,760 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-06 21:59:45,761 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-06 21:59:45,762 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-06 21:59:45,767 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-06 21:59:45,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 21:59:45,767 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-11-06 21:59:45,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-11-06 21:59:45,767 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2023-11-06 21:59:45,768 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2023-11-06 21:59:45,768 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-06 21:59:45,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-06 21:59:45,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:59:46,200 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:59:46,202 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:59:47,715 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:59:47,726 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:59:47,726 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-06 21:59:47,729 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:59:47 BoogieIcfgContainer [2023-11-06 21:59:47,729 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:59:47,732 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:59:47,732 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:59:47,735 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:59:47,735 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:59:41" (1/3) ... [2023-11-06 21:59:47,736 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38175a16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:59:47, skipping insertion in model container [2023-11-06 21:59:47,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:45" (2/3) ... [2023-11-06 21:59:47,737 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38175a16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:59:47, skipping insertion in model container [2023-11-06 21:59:47,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:59:47" (3/3) ... [2023-11-06 21:59:47,738 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_down_harness.i [2023-11-06 21:59:47,758 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:59:47,758 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 21:59:47,822 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:59:47,829 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=LoopsAndPotentialCycles, 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;@464c644d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:59:47,829 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 21:59:47,835 INFO L276 IsEmpty]: Start isEmpty. Operand has 328 states, 199 states have (on average 1.2311557788944723) internal successors, (245), 200 states have internal predecessors, (245), 104 states have call successors, (104), 23 states have call predecessors, (104), 23 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2023-11-06 21:59:47,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-11-06 21:59:47,856 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:59:47,857 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:47,858 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:59:47,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:47,863 INFO L85 PathProgramCache]: Analyzing trace with hash -301215052, now seen corresponding path program 1 times [2023-11-06 21:59:47,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:47,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575668925] [2023-11-06 21:59:47,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:47,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:48,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:48,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:59:48,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:48,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 21:59:48,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:48,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 21:59:48,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:48,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 21:59:48,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:48,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 21:59:48,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:48,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-06 21:59:48,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:48,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 21:59:48,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:48,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-06 21:59:48,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:48,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 21:59:48,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:48,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-06 21:59:48,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:48,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 21:59:48,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:48,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:59:48,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:48,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-06 21:59:48,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:48,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 21:59:48,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:48,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:59:48,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:48,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-06 21:59:48,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:48,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-06 21:59:48,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:48,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-06 21:59:49,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:49,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-06 21:59:49,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:49,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-06 21:59:49,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:49,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-06 21:59:49,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:49,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-06 21:59:49,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:49,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-06 21:59:49,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:49,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-11-06 21:59:49,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:49,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-06 21:59:49,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:49,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-06 21:59:49,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:49,131 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2023-11-06 21:59:49,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:49,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575668925] [2023-11-06 21:59:49,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575668925] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:49,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:49,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:59:49,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232592737] [2023-11-06 21:59:49,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:49,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:59:49,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:49,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:59:49,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:59:49,192 INFO L87 Difference]: Start difference. First operand has 328 states, 199 states have (on average 1.2311557788944723) internal successors, (245), 200 states have internal predecessors, (245), 104 states have call successors, (104), 23 states have call predecessors, (104), 23 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-11-06 21:59:50,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:59:50,789 INFO L93 Difference]: Finished difference Result 735 states and 1168 transitions. [2023-11-06 21:59:50,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:59:50,792 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 156 [2023-11-06 21:59:50,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:59:50,809 INFO L225 Difference]: With dead ends: 735 [2023-11-06 21:59:50,809 INFO L226 Difference]: Without dead ends: 425 [2023-11-06 21:59:50,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:59:50,822 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 252 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-06 21:59:50,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 448 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-06 21:59:50,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2023-11-06 21:59:50,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 323. [2023-11-06 21:59:50,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 195 states have (on average 1.2) internal successors, (234), 196 states have internal predecessors, (234), 104 states have call successors, (104), 23 states have call predecessors, (104), 23 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) [2023-11-06 21:59:50,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 441 transitions. [2023-11-06 21:59:50,924 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 441 transitions. Word has length 156 [2023-11-06 21:59:50,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:59:50,925 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 441 transitions. [2023-11-06 21:59:50,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-11-06 21:59:50,926 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 441 transitions. [2023-11-06 21:59:50,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-11-06 21:59:50,931 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:59:50,931 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:50,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:59:50,932 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:59:50,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:50,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1206017786, now seen corresponding path program 1 times [2023-11-06 21:59:50,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:50,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064502388] [2023-11-06 21:59:50,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:50,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:51,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:51,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:59:51,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:51,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 21:59:51,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:51,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 21:59:51,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:51,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 21:59:51,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:51,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 21:59:51,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:51,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-06 21:59:51,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:51,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 21:59:51,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:51,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-06 21:59:51,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:51,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 21:59:51,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:51,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-06 21:59:51,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:51,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 21:59:51,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:51,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:59:51,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:51,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-06 21:59:51,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:51,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 21:59:51,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:51,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:59:51,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:51,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-06 21:59:51,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:51,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-06 21:59:51,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:51,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-06 21:59:51,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:51,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-06 21:59:51,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:51,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-06 21:59:51,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:51,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-06 21:59:51,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:51,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-06 21:59:51,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:51,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-06 21:59:51,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:51,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-11-06 21:59:51,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:51,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-06 21:59:51,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:51,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-06 21:59:51,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:51,982 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2023-11-06 21:59:51,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:51,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064502388] [2023-11-06 21:59:51,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064502388] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:59:51,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662091146] [2023-11-06 21:59:51,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:51,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:51,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:51,988 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:52,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 21:59:52,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:52,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 2322 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 21:59:52,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:59:52,720 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-06 21:59:52,720 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:59:52,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662091146] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:52,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:59:52,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2023-11-06 21:59:52,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475114088] [2023-11-06 21:59:52,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:52,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 21:59:52,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:52,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:59:52,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-06 21:59:52,725 INFO L87 Difference]: Start difference. First operand 323 states and 441 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-11-06 21:59:53,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:59:53,050 INFO L93 Difference]: Finished difference Result 600 states and 824 transitions. [2023-11-06 21:59:53,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:59:53,051 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 156 [2023-11-06 21:59:53,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:59:53,056 INFO L225 Difference]: With dead ends: 600 [2023-11-06 21:59:53,056 INFO L226 Difference]: Without dead ends: 325 [2023-11-06 21:59:53,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-11-06 21:59:53,060 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 459 mSDsluCounter, 1118 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 1510 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 21:59:53,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 1510 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 21:59:53,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2023-11-06 21:59:53,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2023-11-06 21:59:53,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 196 states have (on average 1.1989795918367347) internal successors, (235), 198 states have internal predecessors, (235), 104 states have call successors, (104), 23 states have call predecessors, (104), 24 states have return successors, (107), 103 states have call predecessors, (107), 103 states have call successors, (107) [2023-11-06 21:59:53,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 446 transitions. [2023-11-06 21:59:53,105 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 446 transitions. Word has length 156 [2023-11-06 21:59:53,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:59:53,106 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 446 transitions. [2023-11-06 21:59:53,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-11-06 21:59:53,107 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 446 transitions. [2023-11-06 21:59:53,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-11-06 21:59:53,110 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:59:53,111 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:53,127 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 21:59:53,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:53,322 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:59:53,322 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:53,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1078077224, now seen corresponding path program 1 times [2023-11-06 21:59:53,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:53,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890160509] [2023-11-06 21:59:53,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:53,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:53,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:53,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:59:53,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:53,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 21:59:53,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:53,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 21:59:53,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:53,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 21:59:53,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:53,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 21:59:53,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:53,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-06 21:59:53,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:53,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 21:59:53,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:53,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-06 21:59:53,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:54,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 21:59:54,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:54,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-06 21:59:54,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:54,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 21:59:54,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:54,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:59:54,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:54,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-06 21:59:54,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:54,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 21:59:54,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:54,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:59:54,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:54,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-06 21:59:54,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:54,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:59:54,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:54,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-06 21:59:54,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:54,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-06 21:59:54,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:54,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-06 21:59:54,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:54,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-06 21:59:54,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:54,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-06 21:59:54,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:54,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-06 21:59:54,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:54,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-06 21:59:54,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:54,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-11-06 21:59:54,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:54,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-11-06 21:59:54,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:54,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-11-06 21:59:54,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:54,386 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-11-06 21:59:54,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:54,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890160509] [2023-11-06 21:59:54,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890160509] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:59:54,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128227597] [2023-11-06 21:59:54,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:54,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:54,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:54,393 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:54,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 21:59:54,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:54,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 2372 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 21:59:55,005 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:59:55,213 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-06 21:59:55,213 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:59:55,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128227597] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:55,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:59:55,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-11-06 21:59:55,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836814857] [2023-11-06 21:59:55,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:55,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 21:59:55,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:55,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 21:59:55,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-11-06 21:59:55,217 INFO L87 Difference]: Start difference. First operand 325 states and 446 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2023-11-06 21:59:55,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:59:55,773 INFO L93 Difference]: Finished difference Result 623 states and 871 transitions. [2023-11-06 21:59:55,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 21:59:55,774 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 164 [2023-11-06 21:59:55,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:59:55,779 INFO L225 Difference]: With dead ends: 623 [2023-11-06 21:59:55,779 INFO L226 Difference]: Without dead ends: 346 [2023-11-06 21:59:55,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2023-11-06 21:59:55,783 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 523 mSDsluCounter, 1799 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 2176 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 21:59:55,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 2176 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 21:59:55,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2023-11-06 21:59:55,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 344. [2023-11-06 21:59:55,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 212 states have (on average 1.2122641509433962) internal successors, (257), 214 states have internal predecessors, (257), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (120), 106 states have call predecessors, (120), 105 states have call successors, (120) [2023-11-06 21:59:55,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 483 transitions. [2023-11-06 21:59:55,825 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 483 transitions. Word has length 164 [2023-11-06 21:59:55,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:59:55,826 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 483 transitions. [2023-11-06 21:59:55,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2023-11-06 21:59:55,826 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 483 transitions. [2023-11-06 21:59:55,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-06 21:59:55,830 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:59:55,830 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:55,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 21:59:56,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:56,046 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:59:56,046 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:56,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1440667016, now seen corresponding path program 1 times [2023-11-06 21:59:56,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:56,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436918264] [2023-11-06 21:59:56,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:56,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:56,183 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:59:56,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [711573719] [2023-11-06 21:59:56,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:56,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:56,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:56,185 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:56,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 21:59:56,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:56,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 2513 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 21:59:56,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:59:56,929 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-06 21:59:56,930 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:59:56,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:56,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436918264] [2023-11-06 21:59:56,930 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:59:56,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711573719] [2023-11-06 21:59:56,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711573719] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:56,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:56,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:59:56,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784775736] [2023-11-06 21:59:56,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:56,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:59:56,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:56,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:59:56,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:59:56,934 INFO L87 Difference]: Start difference. First operand 344 states and 483 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2023-11-06 21:59:57,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:59:57,358 INFO L93 Difference]: Finished difference Result 646 states and 915 transitions. [2023-11-06 21:59:57,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 21:59:57,359 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 179 [2023-11-06 21:59:57,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:59:57,364 INFO L225 Difference]: With dead ends: 646 [2023-11-06 21:59:57,364 INFO L226 Difference]: Without dead ends: 350 [2023-11-06 21:59:57,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-11-06 21:59:57,367 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 479 mSDsluCounter, 1469 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 1854 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 21:59:57,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 1854 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 21:59:57,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2023-11-06 21:59:57,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 344. [2023-11-06 21:59:57,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 212 states have (on average 1.2122641509433962) internal successors, (257), 214 states have internal predecessors, (257), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (120), 106 states have call predecessors, (120), 105 states have call successors, (120) [2023-11-06 21:59:57,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 483 transitions. [2023-11-06 21:59:57,405 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 483 transitions. Word has length 179 [2023-11-06 21:59:57,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:59:57,406 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 483 transitions. [2023-11-06 21:59:57,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2023-11-06 21:59:57,407 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 483 transitions. [2023-11-06 21:59:57,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-11-06 21:59:57,410 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:59:57,410 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:57,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 21:59:57,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:57,621 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:59:57,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:57,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1444920709, now seen corresponding path program 1 times [2023-11-06 21:59:57,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:57,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652154829] [2023-11-06 21:59:57,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:57,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:57,725 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:59:57,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [584613248] [2023-11-06 21:59:57,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:57,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:57,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:57,727 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:57,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 21:59:58,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:58,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 2585 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 21:59:58,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:59:58,588 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2023-11-06 21:59:58,588 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:59:58,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:58,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652154829] [2023-11-06 21:59:58,589 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:59:58,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584613248] [2023-11-06 21:59:58,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584613248] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:58,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:58,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 21:59:58,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852562505] [2023-11-06 21:59:58,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:58,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 21:59:58,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:58,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 21:59:58,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-06 21:59:58,592 INFO L87 Difference]: Start difference. First operand 344 states and 483 transitions. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2023-11-06 21:59:59,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:59:59,242 INFO L93 Difference]: Finished difference Result 656 states and 928 transitions. [2023-11-06 21:59:59,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 21:59:59,243 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) Word has length 195 [2023-11-06 21:59:59,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:59:59,247 INFO L225 Difference]: With dead ends: 656 [2023-11-06 21:59:59,247 INFO L226 Difference]: Without dead ends: 360 [2023-11-06 21:59:59,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-11-06 21:59:59,251 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 550 mSDsluCounter, 2121 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 2491 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 21:59:59,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 2491 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 21:59:59,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2023-11-06 21:59:59,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 344. [2023-11-06 21:59:59,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 212 states have (on average 1.2122641509433962) internal successors, (257), 214 states have internal predecessors, (257), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (120), 106 states have call predecessors, (120), 105 states have call successors, (120) [2023-11-06 21:59:59,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 483 transitions. [2023-11-06 21:59:59,284 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 483 transitions. Word has length 195 [2023-11-06 21:59:59,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:59:59,285 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 483 transitions. [2023-11-06 21:59:59,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2023-11-06 21:59:59,285 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 483 transitions. [2023-11-06 21:59:59,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-11-06 21:59:59,289 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:59:59,289 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:59,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 21:59:59,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:59,500 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:59:59,500 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:59,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1511190445, now seen corresponding path program 2 times [2023-11-06 21:59:59,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:59,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371763149] [2023-11-06 21:59:59,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:59,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:59,608 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:59:59,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2092015455] [2023-11-06 21:59:59,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 21:59:59,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:59,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:59,610 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:59,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:00:00,568 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:00:00,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:00:00,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 2726 conjuncts, 249 conjunts are in the unsatisfiable core [2023-11-06 22:00:00,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:00:04,536 INFO L217 Elim1Store]: Index analysis took 157 ms [2023-11-06 22:00:06,088 INFO L322 Elim1Store]: treesize reduction 368, result has 50.1 percent of original size [2023-11-06 22:00:06,090 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 93 select indices, 93 select index equivalence classes, 4186 disjoint index pairs (out of 4278 index pairs), introduced 93 new quantified variables, introduced 92 case distinctions, treesize of input 466 treesize of output 648 [2023-11-06 22:00:29,909 WARN L667 sPolynomialRelations]: Constructing 2147483647(two to the power of 92 dual juncts. [2023-11-06 22:00:29,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:00:29,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371763149] [2023-11-06 22:00:29,910 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:00:29,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092015455] [2023-11-06 22:00:29,913 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-11-06 22:00:29,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:00:30,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:00:30,129 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.OutOfMemoryError: Requested array size exceeds VM limit at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir$ExplicitLhsPolynomialRelations.buildCorrespondingFiniteJunctionForAntiDer(DualJunctionTir.java:669) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir$ExplicitLhsPolynomialRelations.buildBoundConstraint(DualJunctionTir.java:541) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne(DualJunctionTir.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminate(DualJunctionTir.java:144) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:543) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:522) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:515) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:326) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:298) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) [2023-11-06 22:00:30,132 INFO L158 Benchmark]: Toolchain (without parser) took 48472.80ms. Allocated memory was 161.5MB in the beginning and 962.6MB in the end (delta: 801.1MB). Free memory was 111.3MB in the beginning and 546.6MB in the end (delta: -435.3MB). Peak memory consumption was 368.3MB. Max. memory is 16.1GB. [2023-11-06 22:00:30,132 INFO L158 Benchmark]: CDTParser took 0.62ms. Allocated memory is still 107.0MB. Free memory is still 57.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:00:30,132 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3591.78ms. Allocated memory was 161.5MB in the beginning and 232.8MB in the end (delta: 71.3MB). Free memory was 111.3MB in the beginning and 168.1MB in the end (delta: -56.9MB). Peak memory consumption was 96.9MB. Max. memory is 16.1GB. [2023-11-06 22:00:30,133 INFO L158 Benchmark]: Boogie Procedure Inliner took 229.11ms. Allocated memory is still 232.8MB. Free memory was 168.1MB in the beginning and 157.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 22:00:30,133 INFO L158 Benchmark]: Boogie Preprocessor took 181.42ms. Allocated memory is still 232.8MB. Free memory was 157.6MB in the beginning and 149.3MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-06 22:00:30,133 INFO L158 Benchmark]: RCFGBuilder took 2064.56ms. Allocated memory is still 232.8MB. Free memory was 149.3MB in the beginning and 167.0MB in the end (delta: -17.8MB). Peak memory consumption was 63.0MB. Max. memory is 16.1GB. [2023-11-06 22:00:30,134 INFO L158 Benchmark]: TraceAbstraction took 42399.57ms. Allocated memory was 232.8MB in the beginning and 962.6MB in the end (delta: 729.8MB). Free memory was 166.0MB in the beginning and 546.6MB in the end (delta: -380.6MB). Peak memory consumption was 349.0MB. Max. memory is 16.1GB. [2023-11-06 22:00:30,136 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.62ms. Allocated memory is still 107.0MB. Free memory is still 57.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3591.78ms. Allocated memory was 161.5MB in the beginning and 232.8MB in the end (delta: 71.3MB). Free memory was 111.3MB in the beginning and 168.1MB in the end (delta: -56.9MB). Peak memory consumption was 96.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 229.11ms. Allocated memory is still 232.8MB. Free memory was 168.1MB in the beginning and 157.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 181.42ms. Allocated memory is still 232.8MB. Free memory was 157.6MB in the beginning and 149.3MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 2064.56ms. Allocated memory is still 232.8MB. Free memory was 149.3MB in the beginning and 167.0MB in the end (delta: -17.8MB). Peak memory consumption was 63.0MB. Max. memory is 16.1GB. * TraceAbstraction took 42399.57ms. Allocated memory was 232.8MB in the beginning and 962.6MB in the end (delta: 729.8MB). Free memory was 166.0MB in the beginning and 546.6MB in the end (delta: -380.6MB). Peak memory consumption was 349.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 7776]: Unsoundness Warning Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7776-7787] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: OutOfMemoryError: Requested array size exceeds VM limit de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: OutOfMemoryError: Requested array size exceeds VM limit: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir$ExplicitLhsPolynomialRelations.buildCorrespondingFiniteJunctionForAntiDer(DualJunctionTir.java:669) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2023-11-06 22:00:30,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 1d3eb02e894c2acef7732d0e57c112cc2c197f8f03d7c13822f169fbed4dc5e5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:00:32,753 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:00:32,857 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2023-11-06 22:00:32,865 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:00:32,866 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:00:32,920 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:00:32,921 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:00:32,922 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:00:32,923 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:00:32,928 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:00:32,929 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:00:32,930 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:00:32,930 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:00:32,932 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:00:32,933 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:00:32,933 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:00:32,934 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:00:32,934 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:00:32,935 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:00:32,936 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:00:32,936 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 22:00:32,937 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 22:00:32,937 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:00:32,938 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:00:32,938 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:00:32,939 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:00:32,939 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:00:32,940 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:00:32,940 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:00:32,940 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:00:32,942 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:00:32,942 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-06 22:00:32,942 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 22:00:32,943 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:00:32,943 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:00:32,943 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:00:32,944 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:00:32,944 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-06 22:00:32,944 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:00:32,945 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_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d3eb02e894c2acef7732d0e57c112cc2c197f8f03d7c13822f169fbed4dc5e5 [2023-11-06 22:00:33,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:00:33,371 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:00:33,374 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:00:33,376 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:00:33,377 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:00:33,378 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i [2023-11-06 22:00:36,558 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:00:37,174 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:00:37,175 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i [2023-11-06 22:00:37,220 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/data/f9c772058/868410c14f364a21bbe48d859fb37b5f/FLAGaeef5b3f6 [2023-11-06 22:00:37,237 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/data/f9c772058/868410c14f364a21bbe48d859fb37b5f [2023-11-06 22:00:37,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:00:37,245 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:00:37,249 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:00:37,249 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:00:37,254 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:00:37,255 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:00:37" (1/1) ... [2023-11-06 22:00:37,256 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@380afd5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:37, skipping insertion in model container [2023-11-06 22:00:37,256 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:00:37" (1/1) ... [2023-11-06 22:00:37,434 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:00:37,701 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_634f275d-dd2f-441f-89ed-ec323b7da297/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4504,4517] [2023-11-06 22:00:37,709 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_634f275d-dd2f-441f-89ed-ec323b7da297/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4564,4577] [2023-11-06 22:00:38,686 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:38,687 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:38,688 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:38,689 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:38,690 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:38,706 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:38,707 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:38,709 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:38,710 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:38,712 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:38,713 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:38,714 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:38,715 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,177 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-06 22:00:39,178 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-06 22:00:39,179 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-06 22:00:39,180 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-06 22:00:39,204 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-06 22:00:39,204 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-06 22:00:39,205 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-06 22:00:39,206 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-06 22:00:39,207 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-06 22:00:39,207 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-06 22:00:39,398 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,399 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,404 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,412 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,485 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,486 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,487 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,487 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,487 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,488 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,488 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,489 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,490 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,490 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,490 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,491 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,491 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,494 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,495 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,495 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,495 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,499 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,500 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,516 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,522 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,523 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,551 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:00:39,617 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-06 22:00:39,697 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:00:39,705 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_634f275d-dd2f-441f-89ed-ec323b7da297/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4504,4517] [2023-11-06 22:00:39,706 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_634f275d-dd2f-441f-89ed-ec323b7da297/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4564,4577] [2023-11-06 22:00:39,779 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,789 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,790 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,791 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,793 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,802 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,807 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,808 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,809 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,811 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,812 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,812 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,814 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,871 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-06 22:00:39,872 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-06 22:00:39,873 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-06 22:00:39,874 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-06 22:00:39,875 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-06 22:00:39,876 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-06 22:00:39,876 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-06 22:00:39,878 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-06 22:00:39,878 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-06 22:00:39,879 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-06 22:00:39,943 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,943 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,944 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,950 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,993 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,993 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,994 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,994 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,994 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,995 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,995 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,996 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,997 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,997 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,997 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,998 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,998 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,999 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,999 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:39,999 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:40,000 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:40,004 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:40,004 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:40,038 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:40,039 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:40,039 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:40,045 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:00:40,077 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:00:40,100 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_634f275d-dd2f-441f-89ed-ec323b7da297/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4504,4517] [2023-11-06 22:00:40,101 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_634f275d-dd2f-441f-89ed-ec323b7da297/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4564,4577] [2023-11-06 22:00:40,138 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:40,138 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:40,138 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:40,139 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:40,141 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:40,146 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:40,147 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:40,147 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:40,148 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:40,149 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:40,151 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:40,151 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:40,151 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:40,184 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-06 22:00:40,184 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-06 22:00:40,185 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-06 22:00:40,186 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-06 22:00:40,187 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-06 22:00:40,188 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-06 22:00:40,188 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-06 22:00:40,189 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-06 22:00:40,189 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-06 22:00:40,190 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-06 22:00:40,227 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:40,228 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:40,229 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:40,233 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:40,239 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7776-7787] [2023-11-06 22:00:40,317 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:40,318 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:40,318 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:40,318 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:40,319 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:40,319 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:40,319 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:40,324 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:40,324 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:40,325 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:40,325 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:40,325 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:40,326 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:40,326 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:40,327 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:40,327 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:40,327 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:40,330 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:40,330 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:40,336 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:40,337 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:40,338 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:00:40,346 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:00:40,733 WARN L672 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:00:40,733 WARN L672 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:00:40,733 WARN L672 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:00:40,734 WARN L672 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:00:40,734 WARN L672 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:00:40,734 WARN L672 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:00:40,734 WARN L672 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:00:40,734 WARN L672 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:00:40,734 WARN L672 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:00:40,735 WARN L672 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:00:40,735 WARN L672 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:00:40,735 WARN L672 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:00:40,735 WARN L672 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:00:40,735 WARN L672 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:00:40,735 WARN L672 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:00:40,743 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:00:40,744 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:40 WrapperNode [2023-11-06 22:00:40,744 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:00:40,746 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:00:40,746 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:00:40,746 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:00:40,753 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:40" (1/1) ... [2023-11-06 22:00:40,855 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:40" (1/1) ... [2023-11-06 22:00:40,962 INFO L138 Inliner]: procedures = 716, calls = 1906, calls flagged for inlining = 59, calls inlined = 14, statements flattened = 839 [2023-11-06 22:00:40,963 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:00:40,964 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:00:40,964 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:00:40,964 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:00:40,973 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:40" (1/1) ... [2023-11-06 22:00:40,973 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:40" (1/1) ... [2023-11-06 22:00:40,986 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:40" (1/1) ... [2023-11-06 22:00:40,986 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:40" (1/1) ... [2023-11-06 22:00:41,034 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:40" (1/1) ... [2023-11-06 22:00:41,041 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:40" (1/1) ... [2023-11-06 22:00:41,053 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:40" (1/1) ... [2023-11-06 22:00:41,061 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:40" (1/1) ... [2023-11-06 22:00:41,076 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:00:41,077 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:00:41,077 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:00:41,077 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:00:41,078 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:40" (1/1) ... [2023-11-06 22:00:41,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:00:41,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:00:41,134 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:00:41,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:00:41,177 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2023-11-06 22:00:41,177 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2023-11-06 22:00:41,178 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-11-06 22:00:41,178 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-11-06 22:00:41,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:00:41,178 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-11-06 22:00:41,178 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-11-06 22:00:41,179 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-06 22:00:41,179 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-06 22:00:41,179 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-06 22:00:41,180 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-06 22:00:41,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 22:00:41,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-11-06 22:00:41,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2023-11-06 22:00:41,180 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-06 22:00:41,180 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-06 22:00:41,181 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-06 22:00:41,181 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-06 22:00:41,181 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2023-11-06 22:00:41,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2023-11-06 22:00:41,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:00:41,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:00:41,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 22:00:41,182 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-06 22:00:41,182 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-06 22:00:41,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:00:41,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:00:41,183 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-06 22:00:41,183 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-06 22:00:41,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-06 22:00:41,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2023-11-06 22:00:41,183 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2023-11-06 22:00:41,183 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2023-11-06 22:00:41,184 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-06 22:00:41,184 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-06 22:00:41,184 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-06 22:00:41,184 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-06 22:00:41,184 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2023-11-06 22:00:41,184 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2023-11-06 22:00:41,185 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2023-11-06 22:00:41,185 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2023-11-06 22:00:41,185 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 22:00:41,185 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 22:00:41,185 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-06 22:00:41,185 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-06 22:00:41,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:00:41,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 22:00:41,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2023-11-06 22:00:41,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2023-11-06 22:00:41,186 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_down [2023-11-06 22:00:41,186 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_down [2023-11-06 22:00:41,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-06 22:00:41,187 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2023-11-06 22:00:41,187 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2023-11-06 22:00:41,204 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-06 22:00:41,204 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-06 22:00:41,205 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-06 22:00:41,205 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-06 22:00:41,205 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-11-06 22:00:41,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-11-06 22:00:41,205 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2023-11-06 22:00:41,205 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2023-11-06 22:00:41,643 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:00:41,645 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:00:44,913 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:00:44,931 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:00:44,931 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-06 22:00:44,935 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:00:44 BoogieIcfgContainer [2023-11-06 22:00:44,935 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:00:44,938 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:00:44,938 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:00:44,941 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:00:44,941 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:00:37" (1/3) ... [2023-11-06 22:00:44,943 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@314cc93d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:00:44, skipping insertion in model container [2023-11-06 22:00:44,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:40" (2/3) ... [2023-11-06 22:00:44,944 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@314cc93d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:00:44, skipping insertion in model container [2023-11-06 22:00:44,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:00:44" (3/3) ... [2023-11-06 22:00:44,946 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_down_harness.i [2023-11-06 22:00:44,965 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:00:44,965 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:00:45,053 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:00:45,059 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=LoopsAndPotentialCycles, 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;@51651c9d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:00:45,060 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:00:45,066 INFO L276 IsEmpty]: Start isEmpty. Operand has 326 states, 197 states have (on average 1.233502538071066) internal successors, (243), 198 states have internal predecessors, (243), 104 states have call successors, (104), 23 states have call predecessors, (104), 23 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2023-11-06 22:00:45,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-11-06 22:00:45,098 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:00:45,099 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:00:45,100 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:00:45,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:00:45,117 INFO L85 PathProgramCache]: Analyzing trace with hash -2284694, now seen corresponding path program 1 times [2023-11-06 22:00:45,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:00:45,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [927035233] [2023-11-06 22:00:45,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:00:45,138 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:00:45,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:00:45,143 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:00:45,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-06 22:00:46,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:00:46,114 INFO L262 TraceCheckSpWp]: Trace formula consists of 1443 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 22:00:46,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:00:46,212 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-11-06 22:00:46,213 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:00:46,213 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:00:46,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [927035233] [2023-11-06 22:00:46,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [927035233] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:00:46,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:00:46,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:00:46,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072467716] [2023-11-06 22:00:46,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:00:46,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:00:46,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:00:46,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:00:46,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:00:46,263 INFO L87 Difference]: Start difference. First operand has 326 states, 197 states have (on average 1.233502538071066) internal successors, (243), 198 states have internal predecessors, (243), 104 states have call successors, (104), 23 states have call predecessors, (104), 23 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-11-06 22:00:46,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:00:46,391 INFO L93 Difference]: Finished difference Result 629 states and 948 transitions. [2023-11-06 22:00:46,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:00:46,394 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 156 [2023-11-06 22:00:46,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:00:46,421 INFO L225 Difference]: With dead ends: 629 [2023-11-06 22:00:46,425 INFO L226 Difference]: Without dead ends: 321 [2023-11-06 22:00:46,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:00:46,440 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:00:46,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:00:46,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2023-11-06 22:00:46,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2023-11-06 22:00:46,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 193 states have (on average 1.2020725388601037) internal successors, (232), 194 states have internal predecessors, (232), 104 states have call successors, (104), 23 states have call predecessors, (104), 23 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) [2023-11-06 22:00:46,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 439 transitions. [2023-11-06 22:00:46,518 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 439 transitions. Word has length 156 [2023-11-06 22:00:46,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:00:46,520 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 439 transitions. [2023-11-06 22:00:46,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-11-06 22:00:46,521 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 439 transitions. [2023-11-06 22:00:46,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-11-06 22:00:46,538 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:00:46,539 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:00:46,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:00:46,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:00:46,765 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:00:46,766 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:00:46,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1504948144, now seen corresponding path program 1 times [2023-11-06 22:00:46,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:00:46,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1880935466] [2023-11-06 22:00:46,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:00:46,770 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:00:46,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:00:46,771 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:00:46,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-06 22:00:47,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:00:47,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 1443 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:00:47,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:00:47,918 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-06 22:00:47,919 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:00:47,919 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:00:47,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1880935466] [2023-11-06 22:00:47,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1880935466] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:00:47,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:00:47,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:00:47,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079432817] [2023-11-06 22:00:47,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:00:47,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:00:47,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:00:47,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:00:47,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:00:47,929 INFO L87 Difference]: Start difference. First operand 321 states and 439 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-11-06 22:00:48,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:00:48,350 INFO L93 Difference]: Finished difference Result 596 states and 820 transitions. [2023-11-06 22:00:48,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:00:48,351 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 156 [2023-11-06 22:00:48,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:00:48,360 INFO L225 Difference]: With dead ends: 596 [2023-11-06 22:00:48,360 INFO L226 Difference]: Without dead ends: 323 [2023-11-06 22:00:48,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:00:48,363 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 48 mSDsluCounter, 1171 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 1589 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:00:48,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 1589 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:00:48,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2023-11-06 22:00:48,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2023-11-06 22:00:48,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 194 states have (on average 1.2010309278350515) internal successors, (233), 196 states have internal predecessors, (233), 104 states have call successors, (104), 23 states have call predecessors, (104), 24 states have return successors, (107), 103 states have call predecessors, (107), 103 states have call successors, (107) [2023-11-06 22:00:48,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 444 transitions. [2023-11-06 22:00:48,432 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 444 transitions. Word has length 156 [2023-11-06 22:00:48,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:00:48,433 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 444 transitions. [2023-11-06 22:00:48,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-11-06 22:00:48,434 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 444 transitions. [2023-11-06 22:00:48,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-11-06 22:00:48,441 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:00:48,441 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:00:48,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:00:48,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:00:48,665 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:00:48,665 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:00:48,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1950305042, now seen corresponding path program 1 times [2023-11-06 22:00:48,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:00:48,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1733910517] [2023-11-06 22:00:48,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:00:48,667 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:00:48,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:00:48,673 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:00:48,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-06 22:00:49,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:00:49,555 INFO L262 TraceCheckSpWp]: Trace formula consists of 1473 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:00:49,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:00:49,792 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-06 22:00:49,792 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:00:49,792 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:00:49,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1733910517] [2023-11-06 22:00:49,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1733910517] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:00:49,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:00:49,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:00:49,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7095679] [2023-11-06 22:00:49,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:00:49,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:00:49,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:00:49,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:00:49,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:00:49,796 INFO L87 Difference]: Start difference. First operand 323 states and 444 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2023-11-06 22:00:50,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:00:50,702 INFO L93 Difference]: Finished difference Result 619 states and 867 transitions. [2023-11-06 22:00:50,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:00:50,703 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 164 [2023-11-06 22:00:50,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:00:50,707 INFO L225 Difference]: With dead ends: 619 [2023-11-06 22:00:50,707 INFO L226 Difference]: Without dead ends: 344 [2023-11-06 22:00:50,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:00:50,710 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 100 mSDsluCounter, 1896 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 2297 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:00:50,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 2297 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 22:00:50,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2023-11-06 22:00:50,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 342. [2023-11-06 22:00:50,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 210 states have (on average 1.2142857142857142) internal successors, (255), 212 states have internal predecessors, (255), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (120), 106 states have call predecessors, (120), 105 states have call successors, (120) [2023-11-06 22:00:50,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 481 transitions. [2023-11-06 22:00:50,740 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 481 transitions. Word has length 164 [2023-11-06 22:00:50,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:00:50,741 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 481 transitions. [2023-11-06 22:00:50,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2023-11-06 22:00:50,742 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 481 transitions. [2023-11-06 22:00:50,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-06 22:00:50,745 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:00:50,745 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:00:50,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:00:50,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:00:50,969 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:00:50,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:00:50,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1859994570, now seen corresponding path program 1 times [2023-11-06 22:00:50,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:00:50,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [212549832] [2023-11-06 22:00:50,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:00:50,971 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:00:50,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:00:50,975 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:00:50,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-06 22:00:52,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:00:52,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 1585 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:00:52,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:00:52,318 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-06 22:00:52,319 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:00:52,319 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:00:52,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [212549832] [2023-11-06 22:00:52,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [212549832] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:00:52,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:00:52,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:00:52,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55275353] [2023-11-06 22:00:52,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:00:52,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:00:52,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:00:52,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:00:52,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:00:52,322 INFO L87 Difference]: Start difference. First operand 342 states and 481 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2023-11-06 22:00:52,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:00:52,921 INFO L93 Difference]: Finished difference Result 642 states and 911 transitions. [2023-11-06 22:00:52,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:00:52,922 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 179 [2023-11-06 22:00:52,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:00:52,926 INFO L225 Difference]: With dead ends: 642 [2023-11-06 22:00:52,927 INFO L226 Difference]: Without dead ends: 348 [2023-11-06 22:00:52,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:00:52,930 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 67 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 1956 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:00:52,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 1956 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 22:00:52,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2023-11-06 22:00:52,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 342. [2023-11-06 22:00:52,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 210 states have (on average 1.2142857142857142) internal successors, (255), 212 states have internal predecessors, (255), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (120), 106 states have call predecessors, (120), 105 states have call successors, (120) [2023-11-06 22:00:52,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 481 transitions. [2023-11-06 22:00:52,958 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 481 transitions. Word has length 179 [2023-11-06 22:00:52,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:00:52,959 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 481 transitions. [2023-11-06 22:00:52,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2023-11-06 22:00:52,959 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 481 transitions. [2023-11-06 22:00:52,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-11-06 22:00:52,963 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:00:52,963 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:00:52,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:00:53,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:00:53,180 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:00:53,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:00:53,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1564451399, now seen corresponding path program 1 times [2023-11-06 22:00:53,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:00:53,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1853725451] [2023-11-06 22:00:53,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:00:53,183 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:00:53,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:00:53,183 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:00:53,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-06 22:00:54,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:00:54,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 1633 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:00:54,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:00:54,601 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2023-11-06 22:00:54,601 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:00:54,602 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:00:54,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1853725451] [2023-11-06 22:00:54,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1853725451] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:00:54,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:00:54,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:00:54,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124977213] [2023-11-06 22:00:54,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:00:54,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:00:54,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:00:54,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:00:54,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:00:54,605 INFO L87 Difference]: Start difference. First operand 342 states and 481 transitions. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2023-11-06 22:00:55,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:00:55,966 INFO L93 Difference]: Finished difference Result 664 states and 940 transitions. [2023-11-06 22:00:55,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:00:55,967 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) Word has length 195 [2023-11-06 22:00:55,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:00:55,971 INFO L225 Difference]: With dead ends: 664 [2023-11-06 22:00:55,971 INFO L226 Difference]: Without dead ends: 370 [2023-11-06 22:00:55,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:00:55,975 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 139 mSDsluCounter, 2271 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 2672 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:00:55,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 2672 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-06 22:00:55,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2023-11-06 22:00:56,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 354. [2023-11-06 22:00:56,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 220 states have (on average 1.2227272727272727) internal successors, (269), 222 states have internal predecessors, (269), 107 states have call successors, (107), 24 states have call predecessors, (107), 26 states have return successors, (121), 107 states have call predecessors, (121), 106 states have call successors, (121) [2023-11-06 22:00:56,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 497 transitions. [2023-11-06 22:00:56,008 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 497 transitions. Word has length 195 [2023-11-06 22:00:56,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:00:56,009 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 497 transitions. [2023-11-06 22:00:56,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2023-11-06 22:00:56,010 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 497 transitions. [2023-11-06 22:00:56,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-11-06 22:00:56,014 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:00:56,014 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:00:56,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:00:56,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:00:56,236 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:00:56,237 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:00:56,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1519332707, now seen corresponding path program 2 times [2023-11-06 22:00:56,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:00:56,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1299651773] [2023-11-06 22:00:56,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:00:56,240 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:00:56,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:00:56,241 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:00:56,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-06 22:00:59,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:00:59,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:00:59,475 INFO L262 TraceCheckSpWp]: Trace formula consists of 1745 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:00:59,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:01:00,002 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-11-06 22:01:00,003 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:01:00,003 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:01:00,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1299651773] [2023-11-06 22:01:00,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1299651773] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:01:00,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:01:00,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:01:00,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399312934] [2023-11-06 22:01:00,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:01:00,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:01:00,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:01:00,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:01:00,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:01:00,006 INFO L87 Difference]: Start difference. First operand 354 states and 497 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-11-06 22:01:03,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:01:03,804 INFO L93 Difference]: Finished difference Result 692 states and 985 transitions. [2023-11-06 22:01:03,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:01:03,807 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 210 [2023-11-06 22:01:03,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:01:03,811 INFO L225 Difference]: With dead ends: 692 [2023-11-06 22:01:03,811 INFO L226 Difference]: Without dead ends: 386 [2023-11-06 22:01:03,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:01:03,815 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 21 mSDsluCounter, 1576 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2009 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:01:03,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 2009 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-06 22:01:03,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2023-11-06 22:01:03,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 362. [2023-11-06 22:01:03,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 228 states have (on average 1.2236842105263157) internal successors, (279), 230 states have internal predecessors, (279), 107 states have call successors, (107), 24 states have call predecessors, (107), 26 states have return successors, (121), 107 states have call predecessors, (121), 106 states have call successors, (121) [2023-11-06 22:01:03,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 507 transitions. [2023-11-06 22:01:03,844 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 507 transitions. Word has length 210 [2023-11-06 22:01:03,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:01:03,845 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 507 transitions. [2023-11-06 22:01:03,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-11-06 22:01:03,846 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 507 transitions. [2023-11-06 22:01:03,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-11-06 22:01:03,849 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:01:03,850 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:01:03,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:01:04,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:01:04,063 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:01:04,063 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:04,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1041530139, now seen corresponding path program 1 times [2023-11-06 22:01:04,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:01:04,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [197788788] [2023-11-06 22:01:04,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:04,066 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:01:04,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:01:04,067 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:01:04,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-06 22:01:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:05,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 1743 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:01:05,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:01:06,051 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-11-06 22:01:06,051 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:01:06,051 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:01:06,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [197788788] [2023-11-06 22:01:06,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [197788788] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:01:06,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:01:06,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:01:06,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166555719] [2023-11-06 22:01:06,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:01:06,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:01:06,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:01:06,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:01:06,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:01:06,054 INFO L87 Difference]: Start difference. First operand 362 states and 507 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-11-06 22:01:09,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:01:09,732 INFO L93 Difference]: Finished difference Result 702 states and 995 transitions. [2023-11-06 22:01:09,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:01:09,735 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 210 [2023-11-06 22:01:09,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:01:09,739 INFO L225 Difference]: With dead ends: 702 [2023-11-06 22:01:09,739 INFO L226 Difference]: Without dead ends: 388 [2023-11-06 22:01:09,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:01:09,742 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 18 mSDsluCounter, 2006 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 2440 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:01:09,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 2440 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-06 22:01:09,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2023-11-06 22:01:09,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 366. [2023-11-06 22:01:09,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 232 states have (on average 1.2198275862068966) internal successors, (283), 234 states have internal predecessors, (283), 107 states have call successors, (107), 24 states have call predecessors, (107), 26 states have return successors, (121), 107 states have call predecessors, (121), 106 states have call successors, (121) [2023-11-06 22:01:09,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 511 transitions. [2023-11-06 22:01:09,769 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 511 transitions. Word has length 210 [2023-11-06 22:01:09,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:01:09,770 INFO L495 AbstractCegarLoop]: Abstraction has 366 states and 511 transitions. [2023-11-06 22:01:09,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-11-06 22:01:09,770 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 511 transitions. [2023-11-06 22:01:09,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-11-06 22:01:09,773 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:01:09,774 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:01:09,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:01:09,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:01:09,988 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:01:09,989 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:09,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1342394599, now seen corresponding path program 1 times [2023-11-06 22:01:09,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:01:09,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [565202393] [2023-11-06 22:01:09,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:09,990 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:01:09,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:01:09,991 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:01:09,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-06 22:01:11,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:11,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 1740 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 22:01:11,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:01:14,304 WARN L861 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_priority_queue_s_sift_down_harness_~#queue~0#1.offset_BEFORE_CALL_1| (_ BitVec 64)) (|v_ULTIMATE.start_aws_priority_queue_s_sift_down_harness_~#queue~0#1.base_BEFORE_CALL_49| (_ BitVec 64))) (not (= (_ bv0 64) (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_priority_queue_s_sift_down_harness_~#queue~0#1.base_BEFORE_CALL_49|) (bvadd (_ bv80 64) |v_ULTIMATE.start_aws_priority_queue_s_sift_down_harness_~#queue~0#1.offset_BEFORE_CALL_1|))))) (exists ((|v_ULTIMATE.start_aws_priority_queue_s_sift_down_harness_~#queue~0#1.offset_BEFORE_CALL_1| (_ BitVec 64)) (|v_ULTIMATE.start_aws_priority_queue_s_sift_down_harness_~#queue~0#1.base_BEFORE_CALL_49| (_ BitVec 64))) (not (= (_ bv0 64) (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_priority_queue_s_sift_down_harness_~#queue~0#1.base_BEFORE_CALL_49|) (bvadd (_ bv80 64) |v_ULTIMATE.start_aws_priority_queue_s_sift_down_harness_~#queue~0#1.offset_BEFORE_CALL_1|)))))) is different from true [2023-11-06 22:01:16,600 WARN L861 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_priority_queue_s_sift_down_harness_~#queue~0#1.offset_BEFORE_CALL_2| (_ BitVec 64)) (|v_ULTIMATE.start_aws_priority_queue_s_sift_down_harness_~#queue~0#1.base_BEFORE_CALL_50| (_ BitVec 64))) (not (= (_ bv0 64) (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_priority_queue_s_sift_down_harness_~#queue~0#1.base_BEFORE_CALL_50|) (bvadd (_ bv80 64) |v_ULTIMATE.start_aws_priority_queue_s_sift_down_harness_~#queue~0#1.offset_BEFORE_CALL_2|))))) (exists ((|v_ULTIMATE.start_aws_priority_queue_s_sift_down_harness_~#queue~0#1.offset_BEFORE_CALL_2| (_ BitVec 64)) (|v_ULTIMATE.start_aws_priority_queue_s_sift_down_harness_~#queue~0#1.base_BEFORE_CALL_50| (_ BitVec 64))) (not (= (_ bv0 64) (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_priority_queue_s_sift_down_harness_~#queue~0#1.base_BEFORE_CALL_50|) (bvadd (_ bv80 64) |v_ULTIMATE.start_aws_priority_queue_s_sift_down_harness_~#queue~0#1.offset_BEFORE_CALL_2|)))))) is different from true [2023-11-06 22:01:18,855 WARN L861 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_priority_queue_s_sift_down_harness_~#queue~0#1.offset_BEFORE_CALL_3| (_ BitVec 64)) (|v_ULTIMATE.start_aws_priority_queue_s_sift_down_harness_~#queue~0#1.base_BEFORE_CALL_51| (_ BitVec 64))) (not (= (_ bv0 64) (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_priority_queue_s_sift_down_harness_~#queue~0#1.base_BEFORE_CALL_51|) (bvadd (_ bv80 64) |v_ULTIMATE.start_aws_priority_queue_s_sift_down_harness_~#queue~0#1.offset_BEFORE_CALL_3|))))) (exists ((|v_ULTIMATE.start_aws_priority_queue_s_sift_down_harness_~#queue~0#1.offset_BEFORE_CALL_3| (_ BitVec 64)) (|v_ULTIMATE.start_aws_priority_queue_s_sift_down_harness_~#queue~0#1.base_BEFORE_CALL_51| (_ BitVec 64))) (not (= (_ bv0 64) (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_priority_queue_s_sift_down_harness_~#queue~0#1.base_BEFORE_CALL_51|) (bvadd (_ bv80 64) |v_ULTIMATE.start_aws_priority_queue_s_sift_down_harness_~#queue~0#1.offset_BEFORE_CALL_3|)))))) is different from true [2023-11-06 22:01:19,133 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2023-11-06 22:01:19,138 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-06 22:01:19,213 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 4 not checked. [2023-11-06 22:01:19,214 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:01:22,122 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:01:22,122 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 29 [2023-11-06 22:01:22,187 INFO L322 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-11-06 22:01:22,187 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2023-11-06 22:01:22,383 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2023-11-06 22:01:22,383 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:01:22,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [565202393] [2023-11-06 22:01:22,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [565202393] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:01:22,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:01:22,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 15 [2023-11-06 22:01:22,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594599129] [2023-11-06 22:01:22,384 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:01:22,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 22:01:22,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:01:22,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 22:01:22,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=109, Unknown=3, NotChecked=66, Total=210 [2023-11-06 22:01:22,388 INFO L87 Difference]: Start difference. First operand 366 states and 511 transitions. Second operand has 15 states, 15 states have (on average 6.733333333333333) internal successors, (101), 15 states have internal predecessors, (101), 5 states have call successors, (41), 5 states have call predecessors, (41), 6 states have return successors, (38), 5 states have call predecessors, (38), 5 states have call successors, (38) [2023-11-06 22:01:27,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:01:32,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:01:32,491 INFO L93 Difference]: Finished difference Result 718 states and 1010 transitions. [2023-11-06 22:01:32,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-06 22:01:32,494 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.733333333333333) internal successors, (101), 15 states have internal predecessors, (101), 5 states have call successors, (41), 5 states have call predecessors, (41), 6 states have return successors, (38), 5 states have call predecessors, (38), 5 states have call successors, (38) Word has length 210 [2023-11-06 22:01:32,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:01:32,498 INFO L225 Difference]: With dead ends: 718 [2023-11-06 22:01:32,498 INFO L226 Difference]: Without dead ends: 432 [2023-11-06 22:01:32,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 403 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=124, Invalid=391, Unknown=3, NotChecked=132, Total=650 [2023-11-06 22:01:32,501 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 87 mSDsluCounter, 3790 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 4219 SdHoareTripleChecker+Invalid, 2300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 1614 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:01:32,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 4219 Invalid, 2300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 678 Invalid, 1 Unknown, 1614 Unchecked, 9.1s Time] [2023-11-06 22:01:32,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2023-11-06 22:01:32,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 388. [2023-11-06 22:01:32,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 247 states have (on average 1.2064777327935223) internal successors, (298), 249 states have internal predecessors, (298), 110 states have call successors, (110), 27 states have call predecessors, (110), 30 states have return successors, (130), 111 states have call predecessors, (130), 109 states have call successors, (130) [2023-11-06 22:01:32,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 538 transitions. [2023-11-06 22:01:32,535 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 538 transitions. Word has length 210 [2023-11-06 22:01:32,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:01:32,539 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 538 transitions. [2023-11-06 22:01:32,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.733333333333333) internal successors, (101), 15 states have internal predecessors, (101), 5 states have call successors, (41), 5 states have call predecessors, (41), 6 states have return successors, (38), 5 states have call predecessors, (38), 5 states have call successors, (38) [2023-11-06 22:01:32,540 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 538 transitions. [2023-11-06 22:01:32,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-11-06 22:01:32,544 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:01:32,544 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:01:32,589 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-11-06 22:01:32,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:01:32,768 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:01:32,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:32,769 INFO L85 PathProgramCache]: Analyzing trace with hash 124937275, now seen corresponding path program 1 times [2023-11-06 22:01:32,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:01:32,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1274069436] [2023-11-06 22:01:32,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:32,771 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:01:32,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:01:32,773 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:01:32,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-06 22:01:34,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:34,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 1743 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:01:34,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:01:34,618 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2023-11-06 22:01:34,619 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:01:34,619 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:01:34,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1274069436] [2023-11-06 22:01:34,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1274069436] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:01:34,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:01:34,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:01:34,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131973955] [2023-11-06 22:01:34,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:01:34,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:01:34,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:01:34,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:01:34,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:01:34,621 INFO L87 Difference]: Start difference. First operand 388 states and 538 transitions. Second operand has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 4 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) [2023-11-06 22:01:35,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:01:35,261 INFO L93 Difference]: Finished difference Result 677 states and 953 transitions. [2023-11-06 22:01:35,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:01:35,262 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 4 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) Word has length 213 [2023-11-06 22:01:35,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:01:35,266 INFO L225 Difference]: With dead ends: 677 [2023-11-06 22:01:35,266 INFO L226 Difference]: Without dead ends: 390 [2023-11-06 22:01:35,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:01:35,269 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 82 mSDsluCounter, 1928 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 2341 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:01:35,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 2341 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 22:01:35,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2023-11-06 22:01:35,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 390. [2023-11-06 22:01:35,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 248 states have (on average 1.2056451612903225) internal successors, (299), 251 states have internal predecessors, (299), 110 states have call successors, (110), 27 states have call predecessors, (110), 31 states have return successors, (132), 111 states have call predecessors, (132), 109 states have call successors, (132) [2023-11-06 22:01:35,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 541 transitions. [2023-11-06 22:01:35,300 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 541 transitions. Word has length 213 [2023-11-06 22:01:35,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:01:35,301 INFO L495 AbstractCegarLoop]: Abstraction has 390 states and 541 transitions. [2023-11-06 22:01:35,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 4 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) [2023-11-06 22:01:35,302 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 541 transitions. [2023-11-06 22:01:35,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2023-11-06 22:01:35,304 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:01:35,304 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:01:35,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:01:35,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:01:35,532 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:01:35,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:35,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1808493671, now seen corresponding path program 1 times [2023-11-06 22:01:35,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:01:35,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1445075571] [2023-11-06 22:01:35,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:35,535 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:01:35,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:01:35,541 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:01:35,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-06 22:01:37,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:37,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 1773 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:01:37,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:01:37,547 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-11-06 22:01:37,548 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:01:37,548 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:01:37,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1445075571] [2023-11-06 22:01:37,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1445075571] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:01:37,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:01:37,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:01:37,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668291708] [2023-11-06 22:01:37,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:01:37,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:01:37,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:01:37,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:01:37,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:01:37,553 INFO L87 Difference]: Start difference. First operand 390 states and 541 transitions. Second operand has 9 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 5 states have call successors, (32), 3 states have call predecessors, (32), 4 states have return successors, (29), 4 states have call predecessors, (29), 5 states have call successors, (29) [2023-11-06 22:01:38,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:01:38,882 INFO L93 Difference]: Finished difference Result 701 states and 986 transitions. [2023-11-06 22:01:38,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:01:38,883 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 5 states have call successors, (32), 3 states have call predecessors, (32), 4 states have return successors, (29), 4 states have call predecessors, (29), 5 states have call successors, (29) Word has length 221 [2023-11-06 22:01:38,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:01:38,887 INFO L225 Difference]: With dead ends: 701 [2023-11-06 22:01:38,887 INFO L226 Difference]: Without dead ends: 412 [2023-11-06 22:01:38,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:01:38,890 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 134 mSDsluCounter, 2609 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 3005 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:01:38,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 3005 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-06 22:01:38,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2023-11-06 22:01:38,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 410. [2023-11-06 22:01:38,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 267 states have (on average 1.2134831460674158) internal successors, (324), 269 states have internal predecessors, (324), 111 states have call successors, (111), 27 states have call predecessors, (111), 31 states have return successors, (133), 113 states have call predecessors, (133), 110 states have call successors, (133) [2023-11-06 22:01:38,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 568 transitions. [2023-11-06 22:01:38,923 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 568 transitions. Word has length 221 [2023-11-06 22:01:38,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:01:38,924 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 568 transitions. [2023-11-06 22:01:38,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 5 states have call successors, (32), 3 states have call predecessors, (32), 4 states have return successors, (29), 4 states have call predecessors, (29), 5 states have call successors, (29) [2023-11-06 22:01:38,924 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 568 transitions. [2023-11-06 22:01:38,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2023-11-06 22:01:38,926 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:01:38,927 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 5, 5, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:01:38,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:01:39,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:01:39,140 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:01:39,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:39,141 INFO L85 PathProgramCache]: Analyzing trace with hash -838109973, now seen corresponding path program 2 times [2023-11-06 22:01:39,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:01:39,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [453544923] [2023-11-06 22:01:39,143 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:01:39,144 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:01:39,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:01:39,145 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:01:39,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-06 22:01:42,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:01:42,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:01:42,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 1885 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 22:01:42,664 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:01:42,981 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2023-11-06 22:01:42,981 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:01:42,981 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:01:42,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [453544923] [2023-11-06 22:01:42,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [453544923] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:01:42,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:01:42,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:01:42,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86493232] [2023-11-06 22:01:42,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:01:42,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:01:42,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:01:42,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:01:42,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:01:42,984 INFO L87 Difference]: Start difference. First operand 410 states and 568 transitions. Second operand has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 6 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (28), 4 states have call predecessors, (28), 6 states have call successors, (28) [2023-11-06 22:01:43,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:01:43,844 INFO L93 Difference]: Finished difference Result 725 states and 1018 transitions. [2023-11-06 22:01:43,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:01:43,845 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 6 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (28), 4 states have call predecessors, (28), 6 states have call successors, (28) Word has length 236 [2023-11-06 22:01:43,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:01:43,849 INFO L225 Difference]: With dead ends: 725 [2023-11-06 22:01:43,850 INFO L226 Difference]: Without dead ends: 416 [2023-11-06 22:01:43,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:01:43,853 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 100 mSDsluCounter, 2283 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 2689 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:01:43,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 2689 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-06 22:01:43,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2023-11-06 22:01:43,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 410. [2023-11-06 22:01:43,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 267 states have (on average 1.2134831460674158) internal successors, (324), 269 states have internal predecessors, (324), 111 states have call successors, (111), 27 states have call predecessors, (111), 31 states have return successors, (133), 113 states have call predecessors, (133), 110 states have call successors, (133) [2023-11-06 22:01:43,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 568 transitions. [2023-11-06 22:01:43,886 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 568 transitions. Word has length 236 [2023-11-06 22:01:43,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:01:43,886 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 568 transitions. [2023-11-06 22:01:43,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 6 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (28), 4 states have call predecessors, (28), 6 states have call successors, (28) [2023-11-06 22:01:43,887 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 568 transitions. [2023-11-06 22:01:43,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-11-06 22:01:43,889 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:01:43,890 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:01:43,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:01:44,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:01:44,104 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:01:44,105 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:44,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1790285288, now seen corresponding path program 1 times [2023-11-06 22:01:44,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:01:44,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1339293696] [2023-11-06 22:01:44,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:44,108 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:01:44,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:01:44,109 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:01:44,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-06 22:01:45,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:46,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 1928 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:01:46,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:01:46,444 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-06 22:01:46,444 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:01:46,445 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:01:46,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1339293696] [2023-11-06 22:01:46,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1339293696] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:01:46,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:01:46,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 22:01:46,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685973612] [2023-11-06 22:01:46,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:01:46,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:01:46,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:01:46,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:01:46,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:01:46,447 INFO L87 Difference]: Start difference. First operand 410 states and 568 transitions. Second operand has 10 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 6 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (30), 5 states have call predecessors, (30), 6 states have call successors, (30) [2023-11-06 22:01:48,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:01:48,334 INFO L93 Difference]: Finished difference Result 719 states and 1008 transitions. [2023-11-06 22:01:48,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:01:48,336 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 6 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (30), 5 states have call predecessors, (30), 6 states have call successors, (30) Word has length 252 [2023-11-06 22:01:48,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:01:48,340 INFO L225 Difference]: With dead ends: 719 [2023-11-06 22:01:48,340 INFO L226 Difference]: Without dead ends: 410 [2023-11-06 22:01:48,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:01:48,344 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 173 mSDsluCounter, 2979 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 3375 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:01:48,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 3375 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-06 22:01:48,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2023-11-06 22:01:48,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 388. [2023-11-06 22:01:48,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 247 states have (on average 1.2064777327935223) internal successors, (298), 249 states have internal predecessors, (298), 110 states have call successors, (110), 27 states have call predecessors, (110), 30 states have return successors, (128), 111 states have call predecessors, (128), 109 states have call successors, (128) [2023-11-06 22:01:48,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 536 transitions. [2023-11-06 22:01:48,375 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 536 transitions. Word has length 252 [2023-11-06 22:01:48,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:01:48,377 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 536 transitions. [2023-11-06 22:01:48,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 6 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (30), 5 states have call predecessors, (30), 6 states have call successors, (30) [2023-11-06 22:01:48,377 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 536 transitions. [2023-11-06 22:01:48,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2023-11-06 22:01:48,380 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:01:48,380 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:01:48,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-11-06 22:01:48,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:01:48,604 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:01:48,605 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:48,605 INFO L85 PathProgramCache]: Analyzing trace with hash 5850340, now seen corresponding path program 2 times [2023-11-06 22:01:48,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:01:48,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [123591712] [2023-11-06 22:01:48,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:01:48,607 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:01:48,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:01:48,608 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:01:48,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-06 22:01:52,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:01:52,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:01:52,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 2040 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:01:52,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:01:52,862 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2023-11-06 22:01:52,862 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:01:52,862 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:01:52,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [123591712] [2023-11-06 22:01:52,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [123591712] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:01:52,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:01:52,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:01:52,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800906447] [2023-11-06 22:01:52,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:01:52,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:01:52,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:01:52,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:01:52,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:01:52,865 INFO L87 Difference]: Start difference. First operand 388 states and 536 transitions. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 7 states have internal predecessors, (81), 5 states have call successors, (31), 4 states have call predecessors, (31), 2 states have return successors, (28), 5 states have call predecessors, (28), 4 states have call successors, (28) [2023-11-06 22:01:54,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:01:54,145 INFO L93 Difference]: Finished difference Result 682 states and 957 transitions. [2023-11-06 22:01:54,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:01:54,146 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 7 states have internal predecessors, (81), 5 states have call successors, (31), 4 states have call predecessors, (31), 2 states have return successors, (28), 5 states have call predecessors, (28), 4 states have call successors, (28) Word has length 267 [2023-11-06 22:01:54,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:01:54,150 INFO L225 Difference]: With dead ends: 682 [2023-11-06 22:01:54,150 INFO L226 Difference]: Without dead ends: 400 [2023-11-06 22:01:54,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:01:54,152 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 79 mSDsluCounter, 2677 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 3078 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:01:54,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 3078 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-06 22:01:54,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2023-11-06 22:01:54,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 400. [2023-11-06 22:01:54,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 253 states have (on average 1.2055335968379446) internal successors, (305), 255 states have internal predecessors, (305), 115 states have call successors, (115), 28 states have call predecessors, (115), 31 states have return successors, (133), 116 states have call predecessors, (133), 114 states have call successors, (133) [2023-11-06 22:01:54,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 553 transitions. [2023-11-06 22:01:54,182 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 553 transitions. Word has length 267 [2023-11-06 22:01:54,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:01:54,183 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 553 transitions. [2023-11-06 22:01:54,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 7 states have internal predecessors, (81), 5 states have call successors, (31), 4 states have call predecessors, (31), 2 states have return successors, (28), 5 states have call predecessors, (28), 4 states have call successors, (28) [2023-11-06 22:01:54,183 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 553 transitions. [2023-11-06 22:01:54,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2023-11-06 22:01:54,186 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:01:54,186 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:01:54,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-11-06 22:01:54,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:01:54,408 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:01:54,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:54,409 INFO L85 PathProgramCache]: Analyzing trace with hash 2116607772, now seen corresponding path program 1 times [2023-11-06 22:01:54,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:01:54,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1700974016] [2023-11-06 22:01:54,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:54,412 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:01:54,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:01:54,414 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:01:54,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-06 22:02:00,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:00,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 2264 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:02:00,548 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:02:01,014 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:02:01,014 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 132 treesize of output 36 [2023-11-06 22:02:03,168 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2023-11-06 22:02:03,168 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:02:03,168 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:02:03,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1700974016] [2023-11-06 22:02:03,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1700974016] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:02:03,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:02:03,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:02:03,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488929467] [2023-11-06 22:02:03,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:02:03,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:02:03,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:02:03,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:02:03,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=41, Unknown=1, NotChecked=0, Total=56 [2023-11-06 22:02:03,171 INFO L87 Difference]: Start difference. First operand 400 states and 553 transitions. Second operand has 8 states, 7 states have (on average 16.285714285714285) internal successors, (114), 8 states have internal predecessors, (114), 3 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2023-11-06 22:02:07,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:02:09,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:02:12,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:02:12,650 INFO L93 Difference]: Finished difference Result 708 states and 993 transitions. [2023-11-06 22:02:12,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:02:12,654 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 16.285714285714285) internal successors, (114), 8 states have internal predecessors, (114), 3 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 297 [2023-11-06 22:02:12,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:02:12,658 INFO L225 Difference]: With dead ends: 708 [2023-11-06 22:02:12,658 INFO L226 Difference]: Without dead ends: 405 [2023-11-06 22:02:12,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=27, Invalid=82, Unknown=1, NotChecked=0, Total=110 [2023-11-06 22:02:12,661 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 7 mSDsluCounter, 1887 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2297 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:02:12,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2297 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 335 Invalid, 2 Unknown, 0 Unchecked, 9.2s Time] [2023-11-06 22:02:12,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2023-11-06 22:02:12,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 402. [2023-11-06 22:02:12,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 255 states have (on average 1.203921568627451) internal successors, (307), 257 states have internal predecessors, (307), 115 states have call successors, (115), 28 states have call predecessors, (115), 31 states have return successors, (133), 116 states have call predecessors, (133), 114 states have call successors, (133) [2023-11-06 22:02:12,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 555 transitions. [2023-11-06 22:02:12,695 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 555 transitions. Word has length 297 [2023-11-06 22:02:12,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:02:12,695 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 555 transitions. [2023-11-06 22:02:12,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 16.285714285714285) internal successors, (114), 8 states have internal predecessors, (114), 3 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2023-11-06 22:02:12,696 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 555 transitions. [2023-11-06 22:02:12,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2023-11-06 22:02:12,699 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:02:12,699 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:12,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-11-06 22:02:12,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:02:12,912 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:02:12,913 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:12,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1470177050, now seen corresponding path program 1 times [2023-11-06 22:02:12,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:02:12,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [244096589] [2023-11-06 22:02:12,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:12,917 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:02:12,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:02:12,919 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:02:12,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-06 22:02:14,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:14,968 INFO L262 TraceCheckSpWp]: Trace formula consists of 2277 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:02:14,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:02:15,064 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2023-11-06 22:02:15,064 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:02:15,064 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:02:15,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [244096589] [2023-11-06 22:02:15,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [244096589] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:02:15,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:02:15,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:02:15,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284914209] [2023-11-06 22:02:15,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:02:15,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:02:15,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:02:15,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:02:15,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:02:15,067 INFO L87 Difference]: Start difference. First operand 402 states and 555 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-06 22:02:15,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:02:15,191 INFO L93 Difference]: Finished difference Result 746 states and 1057 transitions. [2023-11-06 22:02:15,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:02:15,192 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 301 [2023-11-06 22:02:15,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:02:15,197 INFO L225 Difference]: With dead ends: 746 [2023-11-06 22:02:15,197 INFO L226 Difference]: Without dead ends: 407 [2023-11-06 22:02:15,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:02:15,200 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 7 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1292 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:02:15,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1292 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:02:15,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2023-11-06 22:02:15,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 403. [2023-11-06 22:02:15,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 256 states have (on average 1.203125) internal successors, (308), 258 states have internal predecessors, (308), 115 states have call successors, (115), 28 states have call predecessors, (115), 31 states have return successors, (133), 116 states have call predecessors, (133), 114 states have call successors, (133) [2023-11-06 22:02:15,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 556 transitions. [2023-11-06 22:02:15,232 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 556 transitions. Word has length 301 [2023-11-06 22:02:15,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:02:15,232 INFO L495 AbstractCegarLoop]: Abstraction has 403 states and 556 transitions. [2023-11-06 22:02:15,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-06 22:02:15,233 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 556 transitions. [2023-11-06 22:02:15,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2023-11-06 22:02:15,236 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:02:15,236 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:15,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-11-06 22:02:15,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:02:15,450 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:02:15,450 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:15,450 INFO L85 PathProgramCache]: Analyzing trace with hash -916558269, now seen corresponding path program 1 times [2023-11-06 22:02:15,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:02:15,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1116995645] [2023-11-06 22:02:15,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:15,452 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:02:15,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:02:15,453 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:02:15,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-11-06 22:02:17,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:17,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:02:17,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:02:17,743 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 279 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2023-11-06 22:02:17,743 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:02:17,744 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:02:17,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1116995645] [2023-11-06 22:02:17,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1116995645] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:02:17,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:02:17,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 22:02:17,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542089118] [2023-11-06 22:02:17,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:02:17,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:02:17,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:02:17,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:02:17,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:02:17,747 INFO L87 Difference]: Start difference. First operand 403 states and 556 transitions. Second operand has 10 states, 9 states have (on average 13.11111111111111) internal successors, (118), 8 states have internal predecessors, (118), 3 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (33), 4 states have call predecessors, (33), 3 states have call successors, (33) [2023-11-06 22:02:18,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:02:18,506 INFO L93 Difference]: Finished difference Result 754 states and 1052 transitions. [2023-11-06 22:02:18,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:02:18,507 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.11111111111111) internal successors, (118), 8 states have internal predecessors, (118), 3 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (33), 4 states have call predecessors, (33), 3 states have call successors, (33) Word has length 301 [2023-11-06 22:02:18,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:02:18,515 INFO L225 Difference]: With dead ends: 754 [2023-11-06 22:02:18,515 INFO L226 Difference]: Without dead ends: 417 [2023-11-06 22:02:18,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:02:18,518 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 5 mSDsluCounter, 3277 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 3696 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:02:18,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 3696 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-06 22:02:18,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2023-11-06 22:02:18,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 410. [2023-11-06 22:02:18,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 261 states have (on average 1.1992337164750957) internal successors, (313), 264 states have internal predecessors, (313), 115 states have call successors, (115), 28 states have call predecessors, (115), 33 states have return successors, (142), 117 states have call predecessors, (142), 114 states have call successors, (142) [2023-11-06 22:02:18,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 570 transitions. [2023-11-06 22:02:18,561 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 570 transitions. Word has length 301 [2023-11-06 22:02:18,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:02:18,562 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 570 transitions. [2023-11-06 22:02:18,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.11111111111111) internal successors, (118), 8 states have internal predecessors, (118), 3 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (33), 4 states have call predecessors, (33), 3 states have call successors, (33) [2023-11-06 22:02:18,563 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 570 transitions. [2023-11-06 22:02:18,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2023-11-06 22:02:18,565 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:02:18,566 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:18,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-11-06 22:02:18,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:02:18,792 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:02:18,793 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:18,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1106885630, now seen corresponding path program 1 times [2023-11-06 22:02:18,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:02:18,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [193425263] [2023-11-06 22:02:18,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:18,795 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:02:18,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:02:18,796 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:02:18,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-06 22:02:20,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:20,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 2281 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:02:20,906 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:02:20,995 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 258 proven. 1 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2023-11-06 22:02:20,995 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:02:21,476 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 523 trivial. 0 not checked. [2023-11-06 22:02:21,477 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:02:21,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [193425263] [2023-11-06 22:02:21,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [193425263] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:02:21,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:02:21,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-06 22:02:21,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297605712] [2023-11-06 22:02:21,478 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:02:21,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:02:21,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:02:21,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:02:21,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:02:21,480 INFO L87 Difference]: Start difference. First operand 410 states and 570 transitions. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 2 states have call successors, (46), 2 states have call predecessors, (46), 4 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2023-11-06 22:02:22,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:02:22,018 INFO L93 Difference]: Finished difference Result 775 states and 1113 transitions. [2023-11-06 22:02:22,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:02:22,020 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 2 states have call successors, (46), 2 states have call predecessors, (46), 4 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 304 [2023-11-06 22:02:22,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:02:22,023 INFO L225 Difference]: With dead ends: 775 [2023-11-06 22:02:22,024 INFO L226 Difference]: Without dead ends: 425 [2023-11-06 22:02:22,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 608 GetRequests, 600 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:02:22,027 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 19 mSDsluCounter, 2150 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 2586 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:02:22,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 2586 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:02:22,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2023-11-06 22:02:22,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 419. [2023-11-06 22:02:22,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 270 states have (on average 1.2037037037037037) internal successors, (325), 273 states have internal predecessors, (325), 115 states have call successors, (115), 28 states have call predecessors, (115), 33 states have return successors, (142), 117 states have call predecessors, (142), 114 states have call successors, (142) [2023-11-06 22:02:22,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 582 transitions. [2023-11-06 22:02:22,061 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 582 transitions. Word has length 304 [2023-11-06 22:02:22,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:02:22,062 INFO L495 AbstractCegarLoop]: Abstraction has 419 states and 582 transitions. [2023-11-06 22:02:22,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 2 states have call successors, (46), 2 states have call predecessors, (46), 4 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2023-11-06 22:02:22,062 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 582 transitions. [2023-11-06 22:02:22,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2023-11-06 22:02:22,065 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:02:22,066 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:22,116 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2023-11-06 22:02:22,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:02:22,284 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:02:22,284 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:22,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1806336633, now seen corresponding path program 1 times [2023-11-06 22:02:22,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:02:22,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [623095014] [2023-11-06 22:02:22,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:22,286 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:02:22,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:02:22,287 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:02:22,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-11-06 22:02:26,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:26,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 2298 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-06 22:02:26,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:02:27,857 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:02:27,857 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 65 treesize of output 17 [2023-11-06 22:02:27,996 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 261 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2023-11-06 22:02:27,997 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:02:27,997 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:02:27,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [623095014] [2023-11-06 22:02:27,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [623095014] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:02:27,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:02:27,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-06 22:02:27,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251700938] [2023-11-06 22:02:27,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:02:27,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:02:27,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:02:27,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:02:27,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:02:28,000 INFO L87 Difference]: Start difference. First operand 419 states and 582 transitions. Second operand has 12 states, 11 states have (on average 11.0) internal successors, (121), 12 states have internal predecessors, (121), 7 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (35), 7 states have call predecessors, (35), 7 states have call successors, (35) [2023-11-06 22:02:35,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:02:35,821 INFO L93 Difference]: Finished difference Result 847 states and 1207 transitions. [2023-11-06 22:02:35,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:02:35,823 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 11.0) internal successors, (121), 12 states have internal predecessors, (121), 7 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (35), 7 states have call predecessors, (35), 7 states have call successors, (35) Word has length 311 [2023-11-06 22:02:35,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:02:35,828 INFO L225 Difference]: With dead ends: 847 [2023-11-06 22:02:35,829 INFO L226 Difference]: Without dead ends: 476 [2023-11-06 22:02:35,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2023-11-06 22:02:35,832 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 112 mSDsluCounter, 3781 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 4190 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:02:35,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 4190 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 842 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-11-06 22:02:35,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2023-11-06 22:02:35,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 437. [2023-11-06 22:02:35,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 286 states have (on average 1.2062937062937062) internal successors, (345), 289 states have internal predecessors, (345), 115 states have call successors, (115), 28 states have call predecessors, (115), 35 states have return successors, (155), 119 states have call predecessors, (155), 114 states have call successors, (155) [2023-11-06 22:02:35,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 615 transitions. [2023-11-06 22:02:35,870 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 615 transitions. Word has length 311 [2023-11-06 22:02:35,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:02:35,871 INFO L495 AbstractCegarLoop]: Abstraction has 437 states and 615 transitions. [2023-11-06 22:02:35,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 11.0) internal successors, (121), 12 states have internal predecessors, (121), 7 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (35), 7 states have call predecessors, (35), 7 states have call successors, (35) [2023-11-06 22:02:35,871 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 615 transitions. [2023-11-06 22:02:35,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2023-11-06 22:02:35,874 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:02:35,874 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:35,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-11-06 22:02:36,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:02:36,088 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:02:36,089 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:36,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1935455485, now seen corresponding path program 1 times [2023-11-06 22:02:36,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:02:36,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1794293210] [2023-11-06 22:02:36,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:36,091 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:02:36,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:02:36,092 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:02:36,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-11-06 22:02:38,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:38,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 2302 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:02:38,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:02:38,314 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2023-11-06 22:02:38,314 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:02:38,315 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:02:38,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1794293210] [2023-11-06 22:02:38,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1794293210] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:02:38,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:02:38,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:02:38,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916560092] [2023-11-06 22:02:38,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:02:38,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:02:38,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:02:38,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:02:38,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:02:38,319 INFO L87 Difference]: Start difference. First operand 437 states and 615 transitions. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2023-11-06 22:02:38,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:02:38,467 INFO L93 Difference]: Finished difference Result 835 states and 1186 transitions. [2023-11-06 22:02:38,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:02:38,468 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 311 [2023-11-06 22:02:38,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:02:38,472 INFO L225 Difference]: With dead ends: 835 [2023-11-06 22:02:38,473 INFO L226 Difference]: Without dead ends: 456 [2023-11-06 22:02:38,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:02:38,476 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 6 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1756 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:02:38,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1756 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:02:38,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2023-11-06 22:02:38,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 445. [2023-11-06 22:02:38,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 294 states have (on average 1.2006802721088434) internal successors, (353), 297 states have internal predecessors, (353), 115 states have call successors, (115), 28 states have call predecessors, (115), 35 states have return successors, (155), 119 states have call predecessors, (155), 114 states have call successors, (155) [2023-11-06 22:02:38,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 623 transitions. [2023-11-06 22:02:38,514 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 623 transitions. Word has length 311 [2023-11-06 22:02:38,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:02:38,514 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 623 transitions. [2023-11-06 22:02:38,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2023-11-06 22:02:38,515 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 623 transitions. [2023-11-06 22:02:38,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2023-11-06 22:02:38,518 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:02:38,518 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:38,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-11-06 22:02:38,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:02:38,720 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:02:38,721 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:38,721 INFO L85 PathProgramCache]: Analyzing trace with hash 768675197, now seen corresponding path program 1 times [2023-11-06 22:02:38,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:02:38,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1119551021] [2023-11-06 22:02:38,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:38,723 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:02:38,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:02:38,724 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:02:38,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-11-06 22:02:40,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:40,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 2292 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:02:40,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:02:40,856 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 241 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-11-06 22:02:40,857 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:02:40,857 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:02:40,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1119551021] [2023-11-06 22:02:40,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1119551021] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:02:40,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:02:40,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:02:40,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498022812] [2023-11-06 22:02:40,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:02:40,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:02:40,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:02:40,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:02:40,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:02:40,859 INFO L87 Difference]: Start difference. First operand 445 states and 623 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2023-11-06 22:02:40,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:02:40,958 INFO L93 Difference]: Finished difference Result 842 states and 1221 transitions. [2023-11-06 22:02:40,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:02:40,960 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 311 [2023-11-06 22:02:40,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:02:40,964 INFO L225 Difference]: With dead ends: 842 [2023-11-06 22:02:40,964 INFO L226 Difference]: Without dead ends: 445 [2023-11-06 22:02:40,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:02:40,968 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 7 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:02:40,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1309 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:02:40,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2023-11-06 22:02:41,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2023-11-06 22:02:41,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 294 states have (on average 1.1938775510204083) internal successors, (351), 297 states have internal predecessors, (351), 115 states have call successors, (115), 28 states have call predecessors, (115), 35 states have return successors, (155), 119 states have call predecessors, (155), 114 states have call successors, (155) [2023-11-06 22:02:41,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 621 transitions. [2023-11-06 22:02:41,006 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 621 transitions. Word has length 311 [2023-11-06 22:02:41,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:02:41,007 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 621 transitions. [2023-11-06 22:02:41,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2023-11-06 22:02:41,007 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 621 transitions. [2023-11-06 22:02:41,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2023-11-06 22:02:41,010 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:02:41,011 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:41,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-11-06 22:02:41,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:02:41,232 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:02:41,233 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:41,233 INFO L85 PathProgramCache]: Analyzing trace with hash -644503099, now seen corresponding path program 1 times [2023-11-06 22:02:41,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:02:41,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1791105654] [2023-11-06 22:02:41,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:41,235 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:02:41,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:02:41,236 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:02:41,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-11-06 22:02:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:46,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 2306 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-06 22:02:46,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:02:47,138 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 229 proven. 0 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2023-11-06 22:02:47,138 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:02:47,138 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:02:47,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1791105654] [2023-11-06 22:02:47,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1791105654] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:02:47,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:02:47,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-06 22:02:47,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947734661] [2023-11-06 22:02:47,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:02:47,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:02:47,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:02:47,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:02:47,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:02:47,141 INFO L87 Difference]: Start difference. First operand 445 states and 621 transitions. Second operand has 13 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 8 states have call successors, (36), 4 states have call predecessors, (36), 3 states have return successors, (33), 6 states have call predecessors, (33), 7 states have call successors, (33) [2023-11-06 22:02:51,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:02:51,408 INFO L93 Difference]: Finished difference Result 780 states and 1102 transitions. [2023-11-06 22:02:51,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:02:51,410 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 8 states have call successors, (36), 4 states have call predecessors, (36), 3 states have return successors, (33), 6 states have call predecessors, (33), 7 states have call successors, (33) Word has length 315 [2023-11-06 22:02:51,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:02:51,413 INFO L225 Difference]: With dead ends: 780 [2023-11-06 22:02:51,413 INFO L226 Difference]: Without dead ends: 445 [2023-11-06 22:02:51,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2023-11-06 22:02:51,416 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 82 mSDsluCounter, 3555 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 3940 SdHoareTripleChecker+Invalid, 801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:02:51,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 3940 Invalid, 801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-06 22:02:51,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2023-11-06 22:02:51,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2023-11-06 22:02:51,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 294 states have (on average 1.1904761904761905) internal successors, (350), 297 states have internal predecessors, (350), 115 states have call successors, (115), 28 states have call predecessors, (115), 35 states have return successors, (155), 119 states have call predecessors, (155), 114 states have call successors, (155) [2023-11-06 22:02:51,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 620 transitions. [2023-11-06 22:02:51,455 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 620 transitions. Word has length 315 [2023-11-06 22:02:51,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:02:51,456 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 620 transitions. [2023-11-06 22:02:51,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 8 states have call successors, (36), 4 states have call predecessors, (36), 3 states have return successors, (33), 6 states have call predecessors, (33), 7 states have call successors, (33) [2023-11-06 22:02:51,456 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 620 transitions. [2023-11-06 22:02:51,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2023-11-06 22:02:51,459 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:02:51,459 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:51,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-11-06 22:02:51,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:02:51,681 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:02:51,681 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:51,681 INFO L85 PathProgramCache]: Analyzing trace with hash 616414151, now seen corresponding path program 1 times [2023-11-06 22:02:51,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:02:51,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1674529254] [2023-11-06 22:02:51,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:51,683 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:02:51,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:02:51,685 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:02:51,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634f275d-dd2f-441f-89ed-ec323b7da297/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process