./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1e567b-07f3-42b4-b44c-d94be6121a8e/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1e567b-07f3-42b4-b44c-d94be6121a8e/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1e567b-07f3-42b4-b44c-d94be6121a8e/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1e567b-07f3-42b4-b44c-d94be6121a8e/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1e567b-07f3-42b4-b44c-d94be6121a8e/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1e567b-07f3-42b4-b44c-d94be6121a8e/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d8b9169d0d63d8238da177db4999afabb0efa6e97e1e7cd257e8474f76788f17 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:04:51,953 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:04:52,079 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1e567b-07f3-42b4-b44c-d94be6121a8e/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-25 00:04:52,084 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:04:52,085 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:04:52,110 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:04:52,110 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:04:52,111 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:04:52,112 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:04:52,112 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:04:52,113 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:04:52,114 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:04:52,114 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:04:52,115 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-25 00:04:52,115 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:04:52,116 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:04:52,116 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-25 00:04:52,117 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-25 00:04:52,117 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:04:52,118 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-25 00:04:52,118 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-25 00:04:52,119 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-25 00:04:52,119 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:04:52,120 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:04:52,120 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:04:52,121 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:04:52,121 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:04:52,121 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:04:52,122 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:04:52,122 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:04:52,123 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:04:52,123 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:04:52,123 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:04:52,124 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:04:52,124 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:04:52,124 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:04:52,124 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:04:52,125 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:04:52,125 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-25 00:04:52,125 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-25 00:04:52,125 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:04:52,126 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:04:52,126 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:04:52,126 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:04:52,126 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_4e1e567b-07f3-42b4-b44c-d94be6121a8e/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1e567b-07f3-42b4-b44c-d94be6121a8e/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d8b9169d0d63d8238da177db4999afabb0efa6e97e1e7cd257e8474f76788f17 [2023-11-25 00:04:52,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:04:52,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:04:52,453 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:04:52,454 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:04:52,455 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:04:52,456 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1e567b-07f3-42b4-b44c-d94be6121a8e/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i [2023-11-25 00:04:55,511 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:04:56,179 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:04:56,180 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1e567b-07f3-42b4-b44c-d94be6121a8e/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i [2023-11-25 00:04:56,226 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1e567b-07f3-42b4-b44c-d94be6121a8e/bin/utaipan-verify-SwPr7d2a91/data/ccb72e54a/2194ad09fcf841b681d1cb597dbc80d4/FLAG0aca93649 [2023-11-25 00:04:56,244 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1e567b-07f3-42b4-b44c-d94be6121a8e/bin/utaipan-verify-SwPr7d2a91/data/ccb72e54a/2194ad09fcf841b681d1cb597dbc80d4 [2023-11-25 00:04:56,252 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:04:56,254 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:04:56,257 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:04:56,257 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:04:56,263 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:04:56,264 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:04:56" (1/1) ... [2023-11-25 00:04:56,265 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24f83912 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:56, skipping insertion in model container [2023-11-25 00:04:56,265 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:04:56" (1/1) ... [2023-11-25 00:04:56,418 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:04:56,717 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_4e1e567b-07f3-42b4-b44c-d94be6121a8e/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i[4497,4510] [2023-11-25 00:04:56,726 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_4e1e567b-07f3-42b4-b44c-d94be6121a8e/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i[4557,4570] [2023-11-25 00:04:57,748 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:57,749 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:57,749 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:57,750 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:57,751 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:57,766 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:57,766 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:57,769 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:57,769 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:57,771 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:57,773 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:57,773 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:57,774 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,172 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-25 00:04:58,173 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-25 00:04:58,175 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-25 00:04:58,176 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-25 00:04:58,178 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-25 00:04:58,179 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-25 00:04:58,179 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-25 00:04:58,180 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-25 00:04:58,181 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-25 00:04:58,181 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-25 00:04:58,410 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,417 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,481 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,483 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,484 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,485 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,485 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,487 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,488 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,489 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,490 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,490 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,491 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,491 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,491 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,495 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,496 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,496 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,498 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,508 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,509 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,525 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,527 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,527 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,554 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:04:58,607 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:04:58,631 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_4e1e567b-07f3-42b4-b44c-d94be6121a8e/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i[4497,4510] [2023-11-25 00:04:58,632 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_4e1e567b-07f3-42b4-b44c-d94be6121a8e/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i[4557,4570] [2023-11-25 00:04:58,694 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,701 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,701 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,702 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,703 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,714 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,715 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,716 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,716 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,717 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,718 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,718 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,719 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,808 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-25 00:04:58,809 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-25 00:04:58,810 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-25 00:04:58,810 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-25 00:04:58,811 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-25 00:04:58,812 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-25 00:04:58,812 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-25 00:04:58,813 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-25 00:04:58,813 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-25 00:04:58,814 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-25 00:04:58,847 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,851 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,857 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7771-7782] [2023-11-25 00:04:58,877 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,878 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,878 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,879 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,879 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,879 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,880 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,880 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,881 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,881 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,881 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,882 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,882 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,883 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,883 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,883 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,884 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,886 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,886 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,891 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,892 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,893 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:04:58,898 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:04:59,217 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:04:59,218 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:04:59,219 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:04:59,219 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:04:59,219 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:04:59,220 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:04:59,220 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:04:59,220 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:04:59,220 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:04:59,221 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:04:59,221 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:04:59,221 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:04:59,221 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:04:59,221 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:04:59,222 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:04:59,230 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:04:59,230 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:59 WrapperNode [2023-11-25 00:04:59,230 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:04:59,231 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:04:59,231 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:04:59,231 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:04:59,238 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:59" (1/1) ... [2023-11-25 00:04:59,345 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:59" (1/1) ... [2023-11-25 00:04:59,436 INFO L138 Inliner]: procedures = 696, calls = 1880, calls flagged for inlining = 60, calls inlined = 19, statements flattened = 1165 [2023-11-25 00:04:59,437 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:04:59,438 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:04:59,438 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:04:59,438 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:04:59,448 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:59" (1/1) ... [2023-11-25 00:04:59,448 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:59" (1/1) ... [2023-11-25 00:04:59,460 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:59" (1/1) ... [2023-11-25 00:04:59,460 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:59" (1/1) ... [2023-11-25 00:04:59,513 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:59" (1/1) ... [2023-11-25 00:04:59,527 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:59" (1/1) ... [2023-11-25 00:04:59,552 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:59" (1/1) ... [2023-11-25 00:04:59,561 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:59" (1/1) ... [2023-11-25 00:04:59,575 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:04:59,576 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:04:59,576 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:04:59,576 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:04:59,577 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:59" (1/1) ... [2023-11-25 00:04:59,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:04:59,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1e567b-07f3-42b4-b44c-d94be6121a8e/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:04:59,610 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1e567b-07f3-42b4-b44c-d94be6121a8e/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:04:59,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1e567b-07f3-42b4-b44c-d94be6121a8e/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:04:59,686 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2023-11-25 00:04:59,687 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2023-11-25 00:04:59,687 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_init_dynamic [2023-11-25 00:04:59,687 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_init_dynamic [2023-11-25 00:04:59,687 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-11-25 00:04:59,687 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-11-25 00:04:59,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-25 00:04:59,688 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-11-25 00:04:59,688 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-11-25 00:04:59,688 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-25 00:04:59,688 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-25 00:04:59,689 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-25 00:04:59,689 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-25 00:04:59,689 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2023-11-25 00:04:59,689 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2023-11-25 00:04:59,689 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2023-11-25 00:04:59,690 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2023-11-25 00:04:59,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-25 00:04:59,690 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-25 00:04:59,690 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-25 00:04:59,690 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-25 00:04:59,690 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-25 00:04:59,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-25 00:04:59,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:04:59,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-25 00:04:59,692 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2023-11-25 00:04:59,692 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2023-11-25 00:04:59,692 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-25 00:04:59,692 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-25 00:04:59,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:04:59,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:04:59,693 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-25 00:04:59,693 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-25 00:04:59,693 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-25 00:04:59,694 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-25 00:04:59,694 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-25 00:04:59,697 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-25 00:04:59,697 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2023-11-25 00:04:59,697 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2023-11-25 00:04:59,698 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2023-11-25 00:04:59,698 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2023-11-25 00:04:59,698 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2023-11-25 00:04:59,699 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2023-11-25 00:04:59,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-25 00:04:59,700 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-25 00:04:59,705 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-25 00:04:59,706 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-25 00:04:59,706 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-25 00:04:59,706 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-25 00:04:59,706 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2023-11-25 00:04:59,706 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2023-11-25 00:04:59,706 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2023-11-25 00:04:59,707 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2023-11-25 00:04:59,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-25 00:04:59,707 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-25 00:04:59,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-25 00:04:59,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-25 00:04:59,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-25 00:04:59,707 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2023-11-25 00:04:59,707 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2023-11-25 00:04:59,708 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-25 00:04:59,708 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-25 00:04:59,708 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-25 00:04:59,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-25 00:04:59,708 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-25 00:04:59,708 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-25 00:04:59,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-25 00:04:59,708 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-11-25 00:04:59,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-11-25 00:04:59,709 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_set_at [2023-11-25 00:04:59,709 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_set_at [2023-11-25 00:04:59,709 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2023-11-25 00:04:59,709 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2023-11-25 00:04:59,709 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-25 00:04:59,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-25 00:04:59,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-25 00:05:00,092 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:05:00,095 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:05:01,630 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:05:02,045 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:05:02,046 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-25 00:05:02,048 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:05:02 BoogieIcfgContainer [2023-11-25 00:05:02,048 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:05:02,052 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:05:02,052 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:05:02,055 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:05:02,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:04:56" (1/3) ... [2023-11-25 00:05:02,058 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c7e26e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:05:02, skipping insertion in model container [2023-11-25 00:05:02,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:59" (2/3) ... [2023-11-25 00:05:02,058 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c7e26e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:05:02, skipping insertion in model container [2023-11-25 00:05:02,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:05:02" (3/3) ... [2023-11-25 00:05:02,060 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_push_harness.i [2023-11-25 00:05:02,082 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:05:02,082 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-25 00:05:02,173 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:05:02,185 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1cdc1171, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:05:02,185 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-25 00:05:02,195 INFO L276 IsEmpty]: Start isEmpty. Operand has 463 states, 233 states have (on average 1.201716738197425) internal successors, (280), 236 states have internal predecessors, (280), 196 states have call successors, (196), 32 states have call predecessors, (196), 32 states have return successors, (196), 196 states have call predecessors, (196), 196 states have call successors, (196) [2023-11-25 00:05:02,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-25 00:05:02,212 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:02,213 INFO L195 NwaCegarLoop]: trace histogram [13, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:05:02,214 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:05:02,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:02,226 INFO L85 PathProgramCache]: Analyzing trace with hash -16308842, now seen corresponding path program 1 times [2023-11-25 00:05:02,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:05:02,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836923203] [2023-11-25 00:05:02,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:02,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:05:02,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:03,630 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-11-25 00:05:03,631 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:05:03,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836923203] [2023-11-25 00:05:03,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836923203] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:05:03,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64321429] [2023-11-25 00:05:03,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:03,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:05:03,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1e567b-07f3-42b4-b44c-d94be6121a8e/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:05:03,640 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1e567b-07f3-42b4-b44c-d94be6121a8e/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:05:03,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1e567b-07f3-42b4-b44c-d94be6121a8e/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-25 00:05:04,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:04,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 2387 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-25 00:05:04,443 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:05:04,569 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-11-25 00:05:04,569 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:05:04,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64321429] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:05:04,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-25 00:05:04,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-11-25 00:05:04,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251694708] [2023-11-25 00:05:04,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:05:04,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-25 00:05:04,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:05:04,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-25 00:05:04,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-25 00:05:04,616 INFO L87 Difference]: Start difference. First operand has 463 states, 233 states have (on average 1.201716738197425) internal successors, (280), 236 states have internal predecessors, (280), 196 states have call successors, (196), 32 states have call predecessors, (196), 32 states have return successors, (196), 196 states have call predecessors, (196), 196 states have call successors, (196) Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-11-25 00:05:05,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:05:05,666 INFO L93 Difference]: Finished difference Result 899 states and 1372 transitions. [2023-11-25 00:05:05,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-25 00:05:05,669 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 125 [2023-11-25 00:05:05,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:05:05,718 INFO L225 Difference]: With dead ends: 899 [2023-11-25 00:05:05,718 INFO L226 Difference]: Without dead ends: 462 [2023-11-25 00:05:05,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-25 00:05:05,744 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 54 mSDsluCounter, 1695 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 2296 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-25 00:05:05,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 2296 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-25 00:05:05,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2023-11-25 00:05:05,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 462. [2023-11-25 00:05:05,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 232 states have (on average 1.1896551724137931) internal successors, (276), 235 states have internal predecessors, (276), 196 states have call successors, (196), 32 states have call predecessors, (196), 32 states have return successors, (204), 194 states have call predecessors, (204), 194 states have call successors, (204) [2023-11-25 00:05:05,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 676 transitions. [2023-11-25 00:05:05,896 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 676 transitions. Word has length 125 [2023-11-25 00:05:05,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:05:05,896 INFO L495 AbstractCegarLoop]: Abstraction has 462 states and 676 transitions. [2023-11-25 00:05:05,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-11-25 00:05:05,897 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 676 transitions. [2023-11-25 00:05:05,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-25 00:05:05,901 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:05,901 INFO L195 NwaCegarLoop]: trace histogram [13, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:05:05,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1e567b-07f3-42b4-b44c-d94be6121a8e/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-25 00:05:06,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1e567b-07f3-42b4-b44c-d94be6121a8e/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-25 00:05:06,113 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:05:06,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:06,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1438598845, now seen corresponding path program 1 times [2023-11-25 00:05:06,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:05:06,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169429761] [2023-11-25 00:05:06,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:06,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:05:06,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:06,798 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2023-11-25 00:05:06,799 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:05:06,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169429761] [2023-11-25 00:05:06,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169429761] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:05:06,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192594921] [2023-11-25 00:05:06,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:06,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:05:06,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1e567b-07f3-42b4-b44c-d94be6121a8e/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:05:06,801 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1e567b-07f3-42b4-b44c-d94be6121a8e/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:05:06,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1e567b-07f3-42b4-b44c-d94be6121a8e/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-25 00:05:07,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:07,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 2437 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-25 00:05:07,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:05:07,561 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-11-25 00:05:07,561 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:05:07,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192594921] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:05:07,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-25 00:05:07,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-11-25 00:05:07,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813904960] [2023-11-25 00:05:07,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:05:07,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-25 00:05:07,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:05:07,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-25 00:05:07,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-25 00:05:07,566 INFO L87 Difference]: Start difference. First operand 462 states and 676 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2023-11-25 00:05:08,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:05:08,729 INFO L93 Difference]: Finished difference Result 909 states and 1372 transitions. [2023-11-25 00:05:08,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-25 00:05:08,730 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 133 [2023-11-25 00:05:08,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:05:08,737 INFO L225 Difference]: With dead ends: 909 [2023-11-25 00:05:08,737 INFO L226 Difference]: Without dead ends: 475 [2023-11-25 00:05:08,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-11-25 00:05:08,742 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 68 mSDsluCounter, 2688 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 3261 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:05:08,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 3261 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-25 00:05:08,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2023-11-25 00:05:08,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 473. [2023-11-25 00:05:08,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 240 states have (on average 1.1916666666666667) internal successors, (286), 243 states have internal predecessors, (286), 198 states have call successors, (198), 32 states have call predecessors, (198), 33 states have return successors, (238), 197 states have call predecessors, (238), 196 states have call successors, (238) [2023-11-25 00:05:08,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 722 transitions. [2023-11-25 00:05:08,800 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 722 transitions. Word has length 133 [2023-11-25 00:05:08,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:05:08,801 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 722 transitions. [2023-11-25 00:05:08,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2023-11-25 00:05:08,801 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 722 transitions. [2023-11-25 00:05:08,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-25 00:05:08,805 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:08,805 INFO L195 NwaCegarLoop]: trace histogram [13, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:05:08,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1e567b-07f3-42b4-b44c-d94be6121a8e/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-25 00:05:09,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1e567b-07f3-42b4-b44c-d94be6121a8e/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:05:09,016 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:05:09,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:09,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1570020207, now seen corresponding path program 1 times [2023-11-25 00:05:09,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:05:09,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062051484] [2023-11-25 00:05:09,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:09,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:05:09,171 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:05:09,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [864875337] [2023-11-25 00:05:09,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:09,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:05:09,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1e567b-07f3-42b4-b44c-d94be6121a8e/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:05:09,177 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1e567b-07f3-42b4-b44c-d94be6121a8e/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:05:09,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1e567b-07f3-42b4-b44c-d94be6121a8e/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-25 00:05:09,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:09,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 2569 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-25 00:05:09,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:05:09,949 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-11-25 00:05:09,949 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:05:09,949 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:05:09,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062051484] [2023-11-25 00:05:09,949 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:05:09,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864875337] [2023-11-25 00:05:09,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864875337] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:05:09,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:05:09,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-25 00:05:09,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381600561] [2023-11-25 00:05:09,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:05:09,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-25 00:05:09,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:05:09,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-25 00:05:09,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-25 00:05:09,953 INFO L87 Difference]: Start difference. First operand 473 states and 722 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2023-11-25 00:05:10,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:05:10,666 INFO L93 Difference]: Finished difference Result 924 states and 1431 transitions. [2023-11-25 00:05:10,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-25 00:05:10,667 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) Word has length 142 [2023-11-25 00:05:10,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:05:10,674 INFO L225 Difference]: With dead ends: 924 [2023-11-25 00:05:10,674 INFO L226 Difference]: Without dead ends: 479 [2023-11-25 00:05:10,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-25 00:05:10,679 INFO L413 NwaCegarLoop]: 598 mSDtfsCounter, 61 mSDsluCounter, 2266 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 2864 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-25 00:05:10,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 2864 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-25 00:05:10,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2023-11-25 00:05:10,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 473. [2023-11-25 00:05:10,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 240 states have (on average 1.1916666666666667) internal successors, (286), 243 states have internal predecessors, (286), 198 states have call successors, (198), 32 states have call predecessors, (198), 33 states have return successors, (238), 197 states have call predecessors, (238), 196 states have call successors, (238) [2023-11-25 00:05:10,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 722 transitions. [2023-11-25 00:05:10,729 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 722 transitions. Word has length 142 [2023-11-25 00:05:10,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:05:10,730 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 722 transitions. [2023-11-25 00:05:10,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2023-11-25 00:05:10,731 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 722 transitions. [2023-11-25 00:05:10,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-25 00:05:10,734 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:10,734 INFO L195 NwaCegarLoop]: trace histogram [13, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:05:10,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1e567b-07f3-42b4-b44c-d94be6121a8e/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-25 00:05:10,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1e567b-07f3-42b4-b44c-d94be6121a8e/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:05:10,948 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:05:10,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:10,949 INFO L85 PathProgramCache]: Analyzing trace with hash -746758171, now seen corresponding path program 1 times [2023-11-25 00:05:10,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:05:10,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506918104] [2023-11-25 00:05:10,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:10,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:05:11,117 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:05:11,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1480828378] [2023-11-25 00:05:11,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:11,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:05:11,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1e567b-07f3-42b4-b44c-d94be6121a8e/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:05:11,119 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1e567b-07f3-42b4-b44c-d94be6121a8e/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:05:11,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1e567b-07f3-42b4-b44c-d94be6121a8e/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-25 00:05:11,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:11,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 2623 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-25 00:05:11,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:05:12,007 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2023-11-25 00:05:12,008 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:05:12,008 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:05:12,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506918104] [2023-11-25 00:05:12,008 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:05:12,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480828378] [2023-11-25 00:05:12,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480828378] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:05:12,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:05:12,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-25 00:05:12,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743021517] [2023-11-25 00:05:12,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:05:12,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-25 00:05:12,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:05:12,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-25 00:05:12,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-25 00:05:12,011 INFO L87 Difference]: Start difference. First operand 473 states and 722 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 5 states have call predecessors, (29), 5 states have call successors, (29) [2023-11-25 00:05:13,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:05:13,482 INFO L93 Difference]: Finished difference Result 926 states and 1426 transitions. [2023-11-25 00:05:13,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-25 00:05:13,483 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 5 states have call predecessors, (29), 5 states have call successors, (29) Word has length 150 [2023-11-25 00:05:13,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:05:13,488 INFO L225 Difference]: With dead ends: 926 [2023-11-25 00:05:13,488 INFO L226 Difference]: Without dead ends: 481 [2023-11-25 00:05:13,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-25 00:05:13,492 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 84 mSDsluCounter, 3206 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 3771 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-25 00:05:13,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 3771 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-25 00:05:13,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2023-11-25 00:05:13,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 473. [2023-11-25 00:05:13,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 240 states have (on average 1.1916666666666667) internal successors, (286), 243 states have internal predecessors, (286), 198 states have call successors, (198), 32 states have call predecessors, (198), 33 states have return successors, (238), 197 states have call predecessors, (238), 196 states have call successors, (238) [2023-11-25 00:05:13,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 722 transitions. [2023-11-25 00:05:13,535 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 722 transitions. Word has length 150 [2023-11-25 00:05:13,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:05:13,536 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 722 transitions. [2023-11-25 00:05:13,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 5 states have call predecessors, (29), 5 states have call successors, (29) [2023-11-25 00:05:13,536 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 722 transitions. [2023-11-25 00:05:13,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-11-25 00:05:13,539 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:13,539 INFO L195 NwaCegarLoop]: trace histogram [13, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:05:13,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1e567b-07f3-42b4-b44c-d94be6121a8e/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-25 00:05:13,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1e567b-07f3-42b4-b44c-d94be6121a8e/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:05:13,751 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:05:13,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:13,752 INFO L85 PathProgramCache]: Analyzing trace with hash -152415361, now seen corresponding path program 2 times [2023-11-25 00:05:13,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:05:13,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855462808] [2023-11-25 00:05:13,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:13,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:05:13,886 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:05:13,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1553219520] [2023-11-25 00:05:13,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-25 00:05:13,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:05:13,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1e567b-07f3-42b4-b44c-d94be6121a8e/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:05:13,888 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1e567b-07f3-42b4-b44c-d94be6121a8e/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:05:13,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1e567b-07f3-42b4-b44c-d94be6121a8e/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-25 00:05:15,383 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-25 00:05:15,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-25 00:05:15,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 1875 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-25 00:05:15,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:05:15,427 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2023-11-25 00:05:15,427 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:05:15,427 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:05:15,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855462808] [2023-11-25 00:05:15,428 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:05:15,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553219520] [2023-11-25 00:05:15,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553219520] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:05:15,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:05:15,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-25 00:05:15,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718345512] [2023-11-25 00:05:15,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:05:15,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-25 00:05:15,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:05:15,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-25 00:05:15,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:05:15,431 INFO L87 Difference]: Start difference. First operand 473 states and 722 transitions. Second operand has 5 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2023-11-25 00:05:16,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:05:16,249 INFO L93 Difference]: Finished difference Result 897 states and 1385 transitions. [2023-11-25 00:05:16,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-25 00:05:16,250 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 159 [2023-11-25 00:05:16,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:05:16,255 INFO L225 Difference]: With dead ends: 897 [2023-11-25 00:05:16,255 INFO L226 Difference]: Without dead ends: 473 [2023-11-25 00:05:16,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:05:16,261 INFO L413 NwaCegarLoop]: 574 mSDtfsCounter, 0 mSDsluCounter, 1676 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2250 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-25 00:05:16,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2250 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-25 00:05:16,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2023-11-25 00:05:16,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 473. [2023-11-25 00:05:16,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 240 states have (on average 1.1916666666666667) internal successors, (286), 243 states have internal predecessors, (286), 198 states have call successors, (198), 32 states have call predecessors, (198), 33 states have return successors, (237), 197 states have call predecessors, (237), 196 states have call successors, (237) [2023-11-25 00:05:16,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 721 transitions. [2023-11-25 00:05:16,302 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 721 transitions. Word has length 159 [2023-11-25 00:05:16,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:05:16,304 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 721 transitions. [2023-11-25 00:05:16,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2023-11-25 00:05:16,305 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 721 transitions. [2023-11-25 00:05:16,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-11-25 00:05:16,308 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:16,308 INFO L195 NwaCegarLoop]: trace histogram [13, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:05:16,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1e567b-07f3-42b4-b44c-d94be6121a8e/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-25 00:05:16,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1e567b-07f3-42b4-b44c-d94be6121a8e/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:05:16,519 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:05:16,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:16,519 INFO L85 PathProgramCache]: Analyzing trace with hash -264642619, now seen corresponding path program 3 times [2023-11-25 00:05:16,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:05:16,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995268652] [2023-11-25 00:05:16,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:16,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:05:16,630 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:05:16,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [743596582] [2023-11-25 00:05:16,630 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-25 00:05:16,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:05:16,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1e567b-07f3-42b4-b44c-d94be6121a8e/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:05:16,632 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1e567b-07f3-42b4-b44c-d94be6121a8e/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:05:16,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e1e567b-07f3-42b4-b44c-d94be6121a8e/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-25 00:05:17,140 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-25 00:05:17,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-25 00:05:17,144 INFO L262 TraceCheckSpWp]: Trace formula consists of 779 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-25 00:05:17,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:05:17,255 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 123 proven. 3 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-11-25 00:05:17,255 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:05:17,581 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-11-25 00:05:17,581 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:05:17,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995268652] [2023-11-25 00:05:17,581 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:05:17,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743596582] [2023-11-25 00:05:17,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743596582] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:05:17,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2044877555] [2023-11-25 00:05:17,611 INFO L159 IcfgInterpreter]: Started Sifa with 91 locations of interest [2023-11-25 00:05:17,612 INFO L166 IcfgInterpreter]: Building call graph [2023-11-25 00:05:17,616 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-25 00:05:17,622 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-25 00:05:17,622 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs