./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_4864c999-21e2-4f32-9de7-ab960625f43d/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4864c999-21e2-4f32-9de7-ab960625f43d/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4864c999-21e2-4f32-9de7-ab960625f43d/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4864c999-21e2-4f32-9de7-ab960625f43d/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4864c999-21e2-4f32-9de7-ab960625f43d/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4864c999-21e2-4f32-9de7-ab960625f43d/bin/utaipan-verify-mE87zJ7Ire --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 71774aeec0d0f8840a1b18b633767b26c38c9eb9d26569d28cdf01c44c9881ac --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:36:18,433 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:36:18,507 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4864c999-21e2-4f32-9de7-ab960625f43d/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 20:36:18,514 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:36:18,514 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:36:18,543 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:36:18,543 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:36:18,544 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:36:18,545 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:36:18,546 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:36:18,546 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:36:18,547 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:36:18,547 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:36:18,548 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:36:18,549 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:36:18,549 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:36:18,550 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:36:18,551 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:36:18,551 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:36:18,552 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:36:18,552 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:36:18,553 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:36:18,554 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:36:18,555 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:36:18,555 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:36:18,556 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:36:18,556 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:36:18,557 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:36:18,557 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:36:18,558 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:36:18,558 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:36:18,559 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:36:18,559 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:36:18,560 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:36:18,560 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:36:18,561 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:36:18,561 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:36:18,562 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:36:18,562 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:36:18,563 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:36:18,563 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:36:18,564 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:36:18,565 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:36:18,565 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:36:18,566 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_4864c999-21e2-4f32-9de7-ab960625f43d/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4864c999-21e2-4f32-9de7-ab960625f43d/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71774aeec0d0f8840a1b18b633767b26c38c9eb9d26569d28cdf01c44c9881ac [2023-11-23 20:36:18,845 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:36:18,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:36:18,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:36:18,884 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:36:18,885 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:36:18,886 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4864c999-21e2-4f32-9de7-ab960625f43d/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i [2023-11-23 20:36:22,062 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:36:22,654 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:36:22,654 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4864c999-21e2-4f32-9de7-ab960625f43d/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i [2023-11-23 20:36:22,695 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4864c999-21e2-4f32-9de7-ab960625f43d/bin/utaipan-verify-mE87zJ7Ire/data/eb6cfd065/4da29b7eb7954734bf8a67aed97f3369/FLAGb1acb9c7f [2023-11-23 20:36:22,713 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4864c999-21e2-4f32-9de7-ab960625f43d/bin/utaipan-verify-mE87zJ7Ire/data/eb6cfd065/4da29b7eb7954734bf8a67aed97f3369 [2023-11-23 20:36:22,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:36:22,723 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:36:22,726 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:36:22,727 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:36:22,732 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:36:22,733 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:36:22" (1/1) ... [2023-11-23 20:36:22,734 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53fa80b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:22, skipping insertion in model container [2023-11-23 20:36:22,734 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:36:22" (1/1) ... [2023-11-23 20:36:22,866 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:36:23,187 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_4864c999-21e2-4f32-9de7-ab960625f43d/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4496,4509] [2023-11-23 20:36:23,196 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_4864c999-21e2-4f32-9de7-ab960625f43d/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4556,4569] [2023-11-23 20:36:24,306 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:24,307 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:24,307 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:24,308 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:24,309 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:24,346 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:24,347 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:24,352 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:24,353 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:24,360 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:24,361 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:24,363 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:24,363 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:24,811 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 20:36:24,812 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 20:36:24,813 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 20:36:24,829 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 20:36:24,831 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 20:36:24,832 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 20:36:24,832 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 20:36:24,833 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 20:36:24,833 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 20:36:24,834 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 20:36:25,066 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,072 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,149 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,150 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,151 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,151 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,151 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,152 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,152 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,153 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,154 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,154 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,154 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,155 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,155 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,158 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,163 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,163 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,168 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,171 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,176 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,186 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,198 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,199 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,215 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:36:25,249 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:36:25,262 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_4864c999-21e2-4f32-9de7-ab960625f43d/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4496,4509] [2023-11-23 20:36:25,263 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_4864c999-21e2-4f32-9de7-ab960625f43d/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4556,4569] [2023-11-23 20:36:25,299 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,300 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,300 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,301 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,301 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,307 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,307 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,308 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,309 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,310 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,311 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,311 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,312 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,349 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 20:36:25,351 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 20:36:25,351 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 20:36:25,352 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 20:36:25,354 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 20:36:25,354 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 20:36:25,355 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 20:36:25,356 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 20:36:25,356 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 20:36:25,357 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 20:36:25,417 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,422 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,428 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7771-7782] [2023-11-23 20:36:25,471 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,472 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,472 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,473 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,473 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,474 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,476 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,476 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,477 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,477 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,477 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,478 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,478 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,514 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,514 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,514 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,515 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,517 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,517 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,522 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,522 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,523 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:36:25,530 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:36:25,811 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:36:25,812 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:36:25,812 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:36:25,812 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:36:25,812 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:36:25,812 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:36:25,812 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:36:25,812 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:36:25,813 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:36:25,813 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:36:25,813 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:36:25,813 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:36:25,813 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:36:25,813 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:36:25,814 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:36:25,821 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:36:25,822 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:25 WrapperNode [2023-11-23 20:36:25,822 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:36:25,823 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:36:25,823 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:36:25,823 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:36:25,831 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:25" (1/1) ... [2023-11-23 20:36:25,931 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:25" (1/1) ... [2023-11-23 20:36:26,053 INFO L138 Inliner]: procedures = 696, calls = 1919, calls flagged for inlining = 60, calls inlined = 15, statements flattened = 1036 [2023-11-23 20:36:26,054 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:36:26,055 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:36:26,055 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:36:26,055 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:36:26,066 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:25" (1/1) ... [2023-11-23 20:36:26,066 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:25" (1/1) ... [2023-11-23 20:36:26,091 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:25" (1/1) ... [2023-11-23 20:36:26,091 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:25" (1/1) ... [2023-11-23 20:36:26,162 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:25" (1/1) ... [2023-11-23 20:36:26,184 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:25" (1/1) ... [2023-11-23 20:36:26,194 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:25" (1/1) ... [2023-11-23 20:36:26,216 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:25" (1/1) ... [2023-11-23 20:36:26,238 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:36:26,240 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:36:26,240 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:36:26,240 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:36:26,241 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:25" (1/1) ... [2023-11-23 20:36:26,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:36:26,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4864c999-21e2-4f32-9de7-ab960625f43d/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:36:26,276 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4864c999-21e2-4f32-9de7-ab960625f43d/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:36:26,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4864c999-21e2-4f32-9de7-ab960625f43d/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:36:26,325 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2023-11-23 20:36:26,325 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2023-11-23 20:36:26,325 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-11-23 20:36:26,326 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-11-23 20:36:26,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:36:26,326 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-11-23 20:36:26,326 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-11-23 20:36:26,326 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-23 20:36:26,326 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-23 20:36:26,326 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 20:36:26,327 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 20:36:26,327 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2023-11-23 20:36:26,327 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2023-11-23 20:36:26,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 20:36:26,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 20:36:26,327 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 20:36:26,328 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 20:36:26,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 20:36:26,328 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 20:36:26,328 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_node [2023-11-23 20:36:26,328 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_node [2023-11-23 20:36:26,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 20:36:26,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:36:26,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 20:36:26,329 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2023-11-23 20:36:26,329 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2023-11-23 20:36:26,329 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-23 20:36:26,329 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-23 20:36:26,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:36:26,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:36:26,330 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 20:36:26,330 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 20:36:26,330 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-23 20:36:26,330 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-23 20:36:26,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 20:36:26,332 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-23 20:36:26,334 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-23 20:36:26,335 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2023-11-23 20:36:26,335 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2023-11-23 20:36:26,335 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2023-11-23 20:36:26,335 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2023-11-23 20:36:26,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 20:36:26,336 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 20:36:26,337 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 20:36:26,337 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 20:36:26,341 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-23 20:36:26,342 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-23 20:36:26,342 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2023-11-23 20:36:26,342 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2023-11-23 20:36:26,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:36:26,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 20:36:26,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 20:36:26,342 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2023-11-23 20:36:26,342 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2023-11-23 20:36:26,343 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 20:36:26,343 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 20:36:26,343 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-23 20:36:26,344 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-23 20:36:26,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 20:36:26,344 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-11-23 20:36:26,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-11-23 20:36:26,344 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2023-11-23 20:36:26,344 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2023-11-23 20:36:26,344 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-23 20:36:26,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-23 20:36:26,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:36:26,345 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at [2023-11-23 20:36:26,345 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at [2023-11-23 20:36:26,753 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:36:26,758 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:36:29,155 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:36:29,515 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:36:29,516 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-23 20:36:29,518 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:36:29 BoogieIcfgContainer [2023-11-23 20:36:29,518 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:36:29,521 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:36:29,521 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:36:29,525 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:36:29,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:36:22" (1/3) ... [2023-11-23 20:36:29,527 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cdeef28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:36:29, skipping insertion in model container [2023-11-23 20:36:29,527 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:25" (2/3) ... [2023-11-23 20:36:29,527 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cdeef28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:36:29, skipping insertion in model container [2023-11-23 20:36:29,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:36:29" (3/3) ... [2023-11-23 20:36:29,529 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_pop_harness.i [2023-11-23 20:36:29,553 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:36:29,554 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-23 20:36:29,634 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:36:29,642 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;@144fd23c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:36:29,643 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-23 20:36:29,651 INFO L276 IsEmpty]: Start isEmpty. Operand has 378 states, 193 states have (on average 1.2072538860103628) internal successors, (233), 196 states have internal predecessors, (233), 156 states have call successors, (156), 27 states have call predecessors, (156), 27 states have return successors, (156), 156 states have call predecessors, (156), 156 states have call successors, (156) [2023-11-23 20:36:29,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-23 20:36:29,675 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:36:29,676 INFO L195 NwaCegarLoop]: trace histogram [9, 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] [2023-11-23 20:36:29,677 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:36:29,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:36:29,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1587688040, now seen corresponding path program 1 times [2023-11-23 20:36:29,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:36:29,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492122348] [2023-11-23 20:36:29,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:36:29,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:36:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:36:31,086 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2023-11-23 20:36:31,086 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:36:31,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492122348] [2023-11-23 20:36:31,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492122348] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:36:31,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461863385] [2023-11-23 20:36:31,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:36:31,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:36:31,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4864c999-21e2-4f32-9de7-ab960625f43d/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:36:31,091 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4864c999-21e2-4f32-9de7-ab960625f43d/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:36:31,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4864c999-21e2-4f32-9de7-ab960625f43d/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 20:36:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:36:31,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 2392 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 20:36:31,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:36:31,999 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-23 20:36:31,999 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:36:32,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461863385] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:36:32,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 20:36:32,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-11-23 20:36:32,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791651374] [2023-11-23 20:36:32,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:36:32,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:36:32,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:36:32,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:36:32,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-23 20:36:32,052 INFO L87 Difference]: Start difference. First operand has 378 states, 193 states have (on average 1.2072538860103628) internal successors, (233), 196 states have internal predecessors, (233), 156 states have call successors, (156), 27 states have call predecessors, (156), 27 states have return successors, (156), 156 states have call predecessors, (156), 156 states have call successors, (156) Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-23 20:36:33,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:36:33,376 INFO L93 Difference]: Finished difference Result 727 states and 1117 transitions. [2023-11-23 20:36:33,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 20:36:33,378 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 101 [2023-11-23 20:36:33,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:36:33,394 INFO L225 Difference]: With dead ends: 727 [2023-11-23 20:36:33,394 INFO L226 Difference]: Without dead ends: 377 [2023-11-23 20:36:33,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-23 20:36:33,406 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 41 mSDsluCounter, 1324 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 1793 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 20:36:33,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 1793 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 20:36:33,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-11-23 20:36:33,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2023-11-23 20:36:33,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 192 states have (on average 1.1927083333333333) internal successors, (229), 196 states have internal predecessors, (229), 156 states have call successors, (156), 27 states have call predecessors, (156), 27 states have return successors, (167), 154 states have call predecessors, (167), 154 states have call successors, (167) [2023-11-23 20:36:33,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 552 transitions. [2023-11-23 20:36:33,502 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 552 transitions. Word has length 101 [2023-11-23 20:36:33,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:36:33,503 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 552 transitions. [2023-11-23 20:36:33,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-23 20:36:33,504 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 552 transitions. [2023-11-23 20:36:33,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-23 20:36:33,509 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:36:33,509 INFO L195 NwaCegarLoop]: trace histogram [9, 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] [2023-11-23 20:36:33,538 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4864c999-21e2-4f32-9de7-ab960625f43d/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-23 20:36:33,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4864c999-21e2-4f32-9de7-ab960625f43d/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-23 20:36:33,734 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:36:33,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:36:33,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1913134538, now seen corresponding path program 1 times [2023-11-23 20:36:33,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:36:33,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79693774] [2023-11-23 20:36:33,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:36:33,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:36:33,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:36:34,769 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-11-23 20:36:34,769 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:36:34,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79693774] [2023-11-23 20:36:34,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79693774] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:36:34,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97039328] [2023-11-23 20:36:34,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:36:34,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:36:34,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4864c999-21e2-4f32-9de7-ab960625f43d/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:36:34,778 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4864c999-21e2-4f32-9de7-ab960625f43d/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:36:34,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4864c999-21e2-4f32-9de7-ab960625f43d/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 20:36:35,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:36:35,529 INFO L262 TraceCheckSpWp]: Trace formula consists of 2442 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 20:36:35,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:36:35,655 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-23 20:36:35,655 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:36:35,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97039328] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:36:35,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 20:36:35,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-11-23 20:36:35,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837524972] [2023-11-23 20:36:35,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:36:35,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 20:36:35,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:36:35,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 20:36:35,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-23 20:36:35,659 INFO L87 Difference]: Start difference. First operand 377 states and 552 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2023-11-23 20:36:38,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:36:38,067 INFO L93 Difference]: Finished difference Result 737 states and 1111 transitions. [2023-11-23 20:36:38,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 20:36:38,068 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 109 [2023-11-23 20:36:38,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:36:38,074 INFO L225 Difference]: With dead ends: 737 [2023-11-23 20:36:38,074 INFO L226 Difference]: Without dead ends: 390 [2023-11-23 20:36:38,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-11-23 20:36:38,078 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 60 mSDsluCounter, 2135 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 2585 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-23 20:36:38,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 2585 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-23 20:36:38,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2023-11-23 20:36:38,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 388. [2023-11-23 20:36:38,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 200 states have (on average 1.195) internal successors, (239), 204 states have internal predecessors, (239), 158 states have call successors, (158), 27 states have call predecessors, (158), 28 states have return successors, (186), 157 states have call predecessors, (186), 156 states have call successors, (186) [2023-11-23 20:36:38,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 583 transitions. [2023-11-23 20:36:38,126 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 583 transitions. Word has length 109 [2023-11-23 20:36:38,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:36:38,127 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 583 transitions. [2023-11-23 20:36:38,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2023-11-23 20:36:38,127 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 583 transitions. [2023-11-23 20:36:38,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-23 20:36:38,134 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:36:38,135 INFO L195 NwaCegarLoop]: trace histogram [9, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:36:38,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4864c999-21e2-4f32-9de7-ab960625f43d/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 20:36:38,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4864c999-21e2-4f32-9de7-ab960625f43d/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:36:38,359 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:36:38,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:36:38,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1712955214, now seen corresponding path program 1 times [2023-11-23 20:36:38,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:36:38,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255308002] [2023-11-23 20:36:38,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:36:38,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:36:38,538 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 20:36:38,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [383803477] [2023-11-23 20:36:38,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:36:38,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:36:38,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4864c999-21e2-4f32-9de7-ab960625f43d/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:36:38,544 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4864c999-21e2-4f32-9de7-ab960625f43d/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:36:38,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4864c999-21e2-4f32-9de7-ab960625f43d/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 20:36:39,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:36:39,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 2574 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 20:36:39,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:36:39,308 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-23 20:36:39,309 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:36:39,309 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:36:39,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255308002] [2023-11-23 20:36:39,309 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 20:36:39,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383803477] [2023-11-23 20:36:39,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383803477] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:36:39,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:36:39,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 20:36:39,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767659356] [2023-11-23 20:36:39,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:36:39,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 20:36:39,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:36:39,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 20:36:39,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 20:36:39,313 INFO L87 Difference]: Start difference. First operand 388 states and 583 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2023-11-23 20:36:41,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:36:41,586 INFO L93 Difference]: Finished difference Result 752 states and 1158 transitions. [2023-11-23 20:36:41,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 20:36:41,586 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 118 [2023-11-23 20:36:41,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:36:41,591 INFO L225 Difference]: With dead ends: 752 [2023-11-23 20:36:41,591 INFO L226 Difference]: Without dead ends: 394 [2023-11-23 20:36:41,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-23 20:36:41,595 INFO L413 NwaCegarLoop]: 466 mSDtfsCounter, 48 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 2226 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-23 20:36:41,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 2226 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-23 20:36:41,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2023-11-23 20:36:41,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 388. [2023-11-23 20:36:41,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 200 states have (on average 1.195) internal successors, (239), 204 states have internal predecessors, (239), 158 states have call successors, (158), 27 states have call predecessors, (158), 28 states have return successors, (186), 157 states have call predecessors, (186), 156 states have call successors, (186) [2023-11-23 20:36:41,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 583 transitions. [2023-11-23 20:36:41,631 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 583 transitions. Word has length 118 [2023-11-23 20:36:41,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:36:41,632 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 583 transitions. [2023-11-23 20:36:41,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2023-11-23 20:36:41,632 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 583 transitions. [2023-11-23 20:36:41,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-23 20:36:41,635 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:36:41,635 INFO L195 NwaCegarLoop]: trace histogram [9, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:36:41,665 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4864c999-21e2-4f32-9de7-ab960625f43d/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-23 20:36:41,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4864c999-21e2-4f32-9de7-ab960625f43d/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:36:41,861 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:36:41,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:36:41,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1518388308, now seen corresponding path program 1 times [2023-11-23 20:36:41,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:36:41,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429340548] [2023-11-23 20:36:41,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:36:41,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:36:42,002 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 20:36:42,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1637625687] [2023-11-23 20:36:42,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:36:42,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:36:42,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4864c999-21e2-4f32-9de7-ab960625f43d/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:36:42,005 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4864c999-21e2-4f32-9de7-ab960625f43d/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:36:42,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4864c999-21e2-4f32-9de7-ab960625f43d/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 20:36:42,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:36:42,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 2628 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 20:36:42,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:36:42,894 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-11-23 20:36:42,894 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:36:42,894 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:36:42,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429340548] [2023-11-23 20:36:42,895 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 20:36:42,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637625687] [2023-11-23 20:36:42,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637625687] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:36:42,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:36:42,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 20:36:42,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909258840] [2023-11-23 20:36:42,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:36:42,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 20:36:42,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:36:42,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 20:36:42,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-23 20:36:42,898 INFO L87 Difference]: Start difference. First operand 388 states and 583 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) [2023-11-23 20:36:45,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:36:45,800 INFO L93 Difference]: Finished difference Result 754 states and 1150 transitions. [2023-11-23 20:36:45,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 20:36:45,801 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) Word has length 126 [2023-11-23 20:36:45,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:36:45,807 INFO L225 Difference]: With dead ends: 754 [2023-11-23 20:36:45,807 INFO L226 Difference]: Without dead ends: 396 [2023-11-23 20:36:45,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-23 20:36:45,812 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 71 mSDsluCounter, 2553 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 3001 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-23 20:36:45,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 3001 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-23 20:36:45,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2023-11-23 20:36:45,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 388. [2023-11-23 20:36:45,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 200 states have (on average 1.195) internal successors, (239), 204 states have internal predecessors, (239), 158 states have call successors, (158), 27 states have call predecessors, (158), 28 states have return successors, (186), 157 states have call predecessors, (186), 156 states have call successors, (186) [2023-11-23 20:36:45,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 583 transitions. [2023-11-23 20:36:45,853 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 583 transitions. Word has length 126 [2023-11-23 20:36:45,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:36:45,854 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 583 transitions. [2023-11-23 20:36:45,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) [2023-11-23 20:36:45,854 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 583 transitions. [2023-11-23 20:36:45,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-23 20:36:45,857 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:36:45,857 INFO L195 NwaCegarLoop]: trace histogram [9, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:36:45,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4864c999-21e2-4f32-9de7-ab960625f43d/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 20:36:46,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4864c999-21e2-4f32-9de7-ab960625f43d/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:36:46,066 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:36:46,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:36:46,067 INFO L85 PathProgramCache]: Analyzing trace with hash -381774538, now seen corresponding path program 2 times [2023-11-23 20:36:46,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:36:46,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31436355] [2023-11-23 20:36:46,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:36:46,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:36:46,239 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 20:36:46,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1075443536] [2023-11-23 20:36:46,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 20:36:46,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:36:46,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4864c999-21e2-4f32-9de7-ab960625f43d/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:36:46,241 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4864c999-21e2-4f32-9de7-ab960625f43d/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:36:46,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4864c999-21e2-4f32-9de7-ab960625f43d/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 20:36:47,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-23 20:36:47,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 20:36:47,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 1875 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-23 20:36:47,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:36:47,082 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-11-23 20:36:47,082 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:36:47,083 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:36:47,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31436355] [2023-11-23 20:36:47,083 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 20:36:47,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075443536] [2023-11-23 20:36:47,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075443536] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:36:47,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:36:47,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 20:36:47,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431471063] [2023-11-23 20:36:47,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:36:47,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:36:47,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:36:47,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:36:47,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:36:47,088 INFO L87 Difference]: Start difference. First operand 388 states and 583 transitions. Second operand has 5 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2023-11-23 20:36:48,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:36:49,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:36:49,568 INFO L93 Difference]: Finished difference Result 713 states and 1103 transitions. [2023-11-23 20:36:49,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 20:36:49,568 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 135 [2023-11-23 20:36:49,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:36:49,573 INFO L225 Difference]: With dead ends: 713 [2023-11-23 20:36:49,573 INFO L226 Difference]: Without dead ends: 388 [2023-11-23 20:36:49,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:36:49,582 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 0 mSDsluCounter, 1342 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1802 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-23 20:36:49,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1802 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-23 20:36:49,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2023-11-23 20:36:49,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 388. [2023-11-23 20:36:49,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 200 states have (on average 1.195) internal successors, (239), 204 states have internal predecessors, (239), 158 states have call successors, (158), 27 states have call predecessors, (158), 28 states have return successors, (185), 157 states have call predecessors, (185), 156 states have call successors, (185) [2023-11-23 20:36:49,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 582 transitions. [2023-11-23 20:36:49,623 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 582 transitions. Word has length 135 [2023-11-23 20:36:49,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:36:49,624 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 582 transitions. [2023-11-23 20:36:49,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2023-11-23 20:36:49,625 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 582 transitions. [2023-11-23 20:36:49,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-23 20:36:49,630 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:36:49,631 INFO L195 NwaCegarLoop]: trace histogram [9, 4, 4, 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] [2023-11-23 20:36:49,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4864c999-21e2-4f32-9de7-ab960625f43d/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 20:36:49,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4864c999-21e2-4f32-9de7-ab960625f43d/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:36:49,846 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:36:49,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:36:49,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1200184786, now seen corresponding path program 3 times [2023-11-23 20:36:49,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:36:49,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438859483] [2023-11-23 20:36:49,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:36:49,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:36:50,001 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 20:36:50,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [784364296] [2023-11-23 20:36:50,001 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-23 20:36:50,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:36:50,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4864c999-21e2-4f32-9de7-ab960625f43d/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:36:50,003 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4864c999-21e2-4f32-9de7-ab960625f43d/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:36:50,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4864c999-21e2-4f32-9de7-ab960625f43d/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 20:36:50,569 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-23 20:36:50,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 20:36:50,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-23 20:36:50,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:36:50,824 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-11-23 20:36:50,825 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:36:51,330 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-23 20:36:51,331 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:36:51,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438859483] [2023-11-23 20:36:51,331 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 20:36:51,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784364296] [2023-11-23 20:36:51,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784364296] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:36:51,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [32539199] [2023-11-23 20:36:51,364 INFO L159 IcfgInterpreter]: Started Sifa with 83 locations of interest [2023-11-23 20:36:51,365 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 20:36:51,370 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 20:36:51,377 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 20:36:51,377 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs