./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 cf1a7837 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_75a7ed41-82c5-44cd-8072-f0e70bfa886a/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75a7ed41-82c5-44cd-8072-f0e70bfa886a/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75a7ed41-82c5-44cd-8072-f0e70bfa886a/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75a7ed41-82c5-44cd-8072-f0e70bfa886a/bin/utaipan-verify-NcY6lQBIFX/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_75a7ed41-82c5-44cd-8072-f0e70bfa886a/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75a7ed41-82c5-44cd-8072-f0e70bfa886a/bin/utaipan-verify-NcY6lQBIFX --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-cf1a783 [2023-11-12 00:54:32,438 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:54:32,572 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75a7ed41-82c5-44cd-8072-f0e70bfa886a/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-12 00:54:32,585 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:54:32,586 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:54:32,648 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:54:32,650 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:54:32,651 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:54:32,652 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:54:32,657 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:54:32,658 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:54:32,659 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:54:32,660 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:54:32,662 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:54:32,662 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:54:32,663 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:54:32,663 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:54:32,664 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:54:32,665 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:54:32,665 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:54:32,666 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:54:32,666 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:54:32,667 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:54:32,668 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:54:32,669 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:54:32,669 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:54:32,669 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:54:32,670 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:54:32,670 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:54:32,671 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:54:32,672 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:54:32,673 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:54:32,673 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:54:32,673 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:54:32,674 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:54:32,674 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:54:32,674 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:54:32,674 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:54:32,675 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:54:32,675 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:54:32,675 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:54:32,675 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:54:32,676 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_75a7ed41-82c5-44cd-8072-f0e70bfa886a/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75a7ed41-82c5-44cd-8072-f0e70bfa886a/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71774aeec0d0f8840a1b18b633767b26c38c9eb9d26569d28cdf01c44c9881ac [2023-11-12 00:54:33,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:54:33,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:54:33,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:54:33,085 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:54:33,086 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:54:33,087 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75a7ed41-82c5-44cd-8072-f0e70bfa886a/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i [2023-11-12 00:54:36,103 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:54:36,764 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:54:36,767 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75a7ed41-82c5-44cd-8072-f0e70bfa886a/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i [2023-11-12 00:54:36,817 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75a7ed41-82c5-44cd-8072-f0e70bfa886a/bin/utaipan-verify-NcY6lQBIFX/data/9255dae43/ee991542830c4e49ae64fecbf9f73957/FLAG5b59b11c2 [2023-11-12 00:54:36,836 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75a7ed41-82c5-44cd-8072-f0e70bfa886a/bin/utaipan-verify-NcY6lQBIFX/data/9255dae43/ee991542830c4e49ae64fecbf9f73957 [2023-11-12 00:54:36,841 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:54:36,845 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:54:36,848 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:54:36,848 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:54:36,854 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:54:36,855 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:54:36" (1/1) ... [2023-11-12 00:54:36,856 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f881919 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:36, skipping insertion in model container [2023-11-12 00:54:36,857 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:54:36" (1/1) ... [2023-11-12 00:54:36,990 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:54:37,322 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_75a7ed41-82c5-44cd-8072-f0e70bfa886a/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4496,4509] [2023-11-12 00:54:37,331 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_75a7ed41-82c5-44cd-8072-f0e70bfa886a/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4556,4569] [2023-11-12 00:54:38,507 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:38,508 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:38,508 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:38,510 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:38,511 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:38,525 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:38,526 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:38,528 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:38,529 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:38,540 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:38,542 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:38,545 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:38,546 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:39,125 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-12 00:54:39,127 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-12 00:54:39,131 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-12 00:54:39,163 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-12 00:54:39,165 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-12 00:54:39,165 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-12 00:54:39,166 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-12 00:54:39,166 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-12 00:54:39,167 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-12 00:54:39,168 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-12 00:54:39,410 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:39,418 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:39,512 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:39,514 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:39,514 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:39,515 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:39,516 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:39,519 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:39,520 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:39,520 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:39,521 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:39,522 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:39,522 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:39,523 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:39,523 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:39,528 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:39,528 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:39,529 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:39,529 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:39,536 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:39,538 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:39,552 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:39,553 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:39,554 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:39,581 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:54:39,636 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:54:39,701 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75a7ed41-82c5-44cd-8072-f0e70bfa886a/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4496,4509] [2023-11-12 00:54:39,715 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_75a7ed41-82c5-44cd-8072-f0e70bfa886a/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4556,4569] [2023-11-12 00:54:39,801 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:39,802 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:39,802 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:39,803 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:39,803 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:39,809 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:39,810 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:39,811 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:39,811 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:39,813 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:39,814 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:39,815 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:39,815 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:39,886 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-12 00:54:39,889 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-12 00:54:39,890 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-12 00:54:39,891 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-12 00:54:39,891 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-12 00:54:39,892 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-12 00:54:39,892 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-12 00:54:39,893 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-12 00:54:39,893 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-12 00:54:39,894 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-12 00:54:39,944 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:39,950 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:39,980 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7771-7782] [2023-11-12 00:54:40,013 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:40,016 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:40,016 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:40,017 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:40,017 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:40,017 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:40,018 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:40,018 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:40,019 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:40,019 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:40,020 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:40,020 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:40,021 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:40,021 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:40,022 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:40,022 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:40,023 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:40,025 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:40,025 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:40,035 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:40,035 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:40,036 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:54:40,055 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:54:40,295 WARN L672 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:54:40,296 WARN L672 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:54:40,296 WARN L672 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:54:40,296 WARN L672 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:54:40,296 WARN L672 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:54:40,296 WARN L672 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:54:40,297 WARN L672 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:54:40,297 WARN L672 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:54:40,297 WARN L672 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:54:40,297 WARN L672 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:54:40,297 WARN L672 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:54:40,297 WARN L672 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:54:40,298 WARN L672 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:54:40,298 WARN L672 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:54:40,298 WARN L672 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:54:40,307 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:54:40,307 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:40 WrapperNode [2023-11-12 00:54:40,307 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:54:40,309 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:54:40,309 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:54:40,309 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:54:40,318 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:40" (1/1) ... [2023-11-12 00:54:40,440 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:40" (1/1) ... [2023-11-12 00:54:40,574 INFO L138 Inliner]: procedures = 696, calls = 1919, calls flagged for inlining = 60, calls inlined = 15, statements flattened = 1036 [2023-11-12 00:54:40,575 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:54:40,578 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:54:40,578 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:54:40,578 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:54:40,588 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:40" (1/1) ... [2023-11-12 00:54:40,589 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:40" (1/1) ... [2023-11-12 00:54:40,613 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:40" (1/1) ... [2023-11-12 00:54:40,613 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:40" (1/1) ... [2023-11-12 00:54:40,671 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:40" (1/1) ... [2023-11-12 00:54:40,678 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:40" (1/1) ... [2023-11-12 00:54:40,706 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:40" (1/1) ... [2023-11-12 00:54:40,714 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:40" (1/1) ... [2023-11-12 00:54:40,732 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:54:40,733 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:54:40,733 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:54:40,734 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:54:40,735 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:40" (1/1) ... [2023-11-12 00:54:40,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:54:40,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75a7ed41-82c5-44cd-8072-f0e70bfa886a/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:54:40,772 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75a7ed41-82c5-44cd-8072-f0e70bfa886a/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:54:40,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75a7ed41-82c5-44cd-8072-f0e70bfa886a/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:54:40,818 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2023-11-12 00:54:40,819 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2023-11-12 00:54:40,819 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-11-12 00:54:40,819 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-11-12 00:54:40,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:54:40,819 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-11-12 00:54:40,819 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-11-12 00:54:40,820 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-12 00:54:40,820 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-12 00:54:40,820 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-12 00:54:40,820 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-12 00:54:40,820 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2023-11-12 00:54:40,820 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2023-11-12 00:54:40,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-12 00:54:40,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:54:40,821 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-12 00:54:40,821 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-12 00:54:40,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-12 00:54:40,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-12 00:54:40,822 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_node [2023-11-12 00:54:40,822 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_node [2023-11-12 00:54:40,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:54:40,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:54:40,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:54:40,823 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2023-11-12 00:54:40,823 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2023-11-12 00:54:40,824 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-12 00:54:40,824 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-12 00:54:40,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:54:40,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:54:40,825 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-12 00:54:40,825 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-12 00:54:40,825 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-12 00:54:40,825 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-12 00:54:40,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-12 00:54:40,826 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-12 00:54:40,827 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-12 00:54:40,827 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2023-11-12 00:54:40,830 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2023-11-12 00:54:40,831 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2023-11-12 00:54:40,831 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2023-11-12 00:54:40,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-12 00:54:40,832 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-12 00:54:40,832 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 00:54:40,833 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 00:54:40,833 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-12 00:54:40,833 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-12 00:54:40,840 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2023-11-12 00:54:40,840 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2023-11-12 00:54:40,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:54:40,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:54:40,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 00:54:40,841 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2023-11-12 00:54:40,842 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2023-11-12 00:54:40,842 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-12 00:54:40,842 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-12 00:54:40,842 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-12 00:54:40,842 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-12 00:54:40,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:54:40,842 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-11-12 00:54:40,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-11-12 00:54:40,843 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2023-11-12 00:54:40,843 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2023-11-12 00:54:40,843 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-12 00:54:40,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-12 00:54:40,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:54:40,843 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at [2023-11-12 00:54:40,843 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at [2023-11-12 00:54:41,267 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:54:41,271 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:54:43,642 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:54:44,034 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:54:44,034 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-12 00:54:44,038 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:54:44 BoogieIcfgContainer [2023-11-12 00:54:44,038 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:54:44,041 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:54:44,041 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:54:44,044 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:54:44,045 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:54:36" (1/3) ... [2023-11-12 00:54:44,046 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@535130c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:54:44, skipping insertion in model container [2023-11-12 00:54:44,046 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:40" (2/3) ... [2023-11-12 00:54:44,046 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@535130c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:54:44, skipping insertion in model container [2023-11-12 00:54:44,046 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:54:44" (3/3) ... [2023-11-12 00:54:44,048 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_pop_harness.i [2023-11-12 00:54:44,069 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:54:44,069 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-12 00:54:44,154 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:54:44,166 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;@58476dcd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:54:44,167 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-12 00:54:44,173 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) [2023-11-12 00:54:44,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-12 00:54:44,197 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:54:44,200 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] [2023-11-12 00:54:44,201 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:54:44,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:54:44,208 INFO L85 PathProgramCache]: Analyzing trace with hash 218390593, now seen corresponding path program 1 times [2023-11-12 00:54:44,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:54:44,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576688350] [2023-11-12 00:54:44,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:54:44,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:54:44,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:54:45,573 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2023-11-12 00:54:45,574 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:54:45,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576688350] [2023-11-12 00:54:45,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576688350] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:54:45,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830030167] [2023-11-12 00:54:45,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:54:45,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:54:45,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75a7ed41-82c5-44cd-8072-f0e70bfa886a/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:54:45,582 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75a7ed41-82c5-44cd-8072-f0e70bfa886a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:54:45,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75a7ed41-82c5-44cd-8072-f0e70bfa886a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:54:46,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:54:46,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 2392 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 00:54:46,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:54:46,539 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-12 00:54:46,539 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:54:46,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830030167] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:54:46,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:54:46,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-11-12 00:54:46,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573459045] [2023-11-12 00:54:46,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:54:46,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:54:46,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:54:46,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:54:46,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:54:46,593 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) [2023-11-12 00:54:48,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:54:48,794 INFO L93 Difference]: Finished difference Result 727 states and 1117 transitions. [2023-11-12 00:54:48,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:54:48,796 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 [2023-11-12 00:54:48,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:54:48,812 INFO L225 Difference]: With dead ends: 727 [2023-11-12 00:54:48,812 INFO L226 Difference]: Without dead ends: 377 [2023-11-12 00:54:48,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-12 00:54:48,830 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 41 mSDsluCounter, 1324 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s 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, 2.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:54:48,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 1793 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-12 00:54:48,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-11-12 00:54:48,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2023-11-12 00:54:48,989 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) [2023-11-12 00:54:48,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 552 transitions. [2023-11-12 00:54:48,998 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 552 transitions. Word has length 101 [2023-11-12 00:54:48,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:54:48,999 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 552 transitions. [2023-11-12 00:54:48,999 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) [2023-11-12 00:54:49,000 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 552 transitions. [2023-11-12 00:54:49,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-12 00:54:49,006 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:54:49,006 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] [2023-11-12 00:54:49,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75a7ed41-82c5-44cd-8072-f0e70bfa886a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 00:54:49,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75a7ed41-82c5-44cd-8072-f0e70bfa886a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-12 00:54:49,218 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:54:49,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:54:49,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1342578447, now seen corresponding path program 1 times [2023-11-12 00:54:49,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:54:49,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935457016] [2023-11-12 00:54:49,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:54:49,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:54:49,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:54:50,145 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-11-12 00:54:50,146 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:54:50,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935457016] [2023-11-12 00:54:50,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935457016] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:54:50,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859845420] [2023-11-12 00:54:50,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:54:50,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:54:50,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75a7ed41-82c5-44cd-8072-f0e70bfa886a/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:54:50,153 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75a7ed41-82c5-44cd-8072-f0e70bfa886a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:54:50,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75a7ed41-82c5-44cd-8072-f0e70bfa886a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 00:54:50,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:54:50,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 2442 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 00:54:50,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:54:51,011 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-12 00:54:51,011 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:54:51,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859845420] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:54:51,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:54:51,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-11-12 00:54:51,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649642755] [2023-11-12 00:54:51,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:54:51,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 00:54:51,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:54:51,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 00:54:51,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-12 00:54:51,016 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) [2023-11-12 00:54:55,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:54:55,122 INFO L93 Difference]: Finished difference Result 737 states and 1111 transitions. [2023-11-12 00:54:55,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 00:54:55,123 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 [2023-11-12 00:54:55,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:54:55,129 INFO L225 Difference]: With dead ends: 737 [2023-11-12 00:54:55,129 INFO L226 Difference]: Without dead ends: 390 [2023-11-12 00:54:55,132 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 [2023-11-12 00:54:55,133 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 60 mSDsluCounter, 2135 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s 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, 4.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:54:55,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 2585 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-12 00:54:55,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2023-11-12 00:54:55,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 388. [2023-11-12 00:54:55,178 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) [2023-11-12 00:54:55,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 583 transitions. [2023-11-12 00:54:55,187 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 583 transitions. Word has length 109 [2023-11-12 00:54:55,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:54:55,188 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 583 transitions. [2023-11-12 00:54:55,188 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) [2023-11-12 00:54:55,188 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 583 transitions. [2023-11-12 00:54:55,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-12 00:54:55,195 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:54:55,195 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] [2023-11-12 00:54:55,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75a7ed41-82c5-44cd-8072-f0e70bfa886a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 00:54:55,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75a7ed41-82c5-44cd-8072-f0e70bfa886a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:54:55,407 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:54:55,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:54:55,407 INFO L85 PathProgramCache]: Analyzing trace with hash 911204636, now seen corresponding path program 1 times [2023-11-12 00:54:55,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:54:55,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765639376] [2023-11-12 00:54:55,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:54:55,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:54:55,565 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:54:55,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [851314114] [2023-11-12 00:54:55,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:54:55,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:54:55,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75a7ed41-82c5-44cd-8072-f0e70bfa886a/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:54:55,570 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75a7ed41-82c5-44cd-8072-f0e70bfa886a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:54:55,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75a7ed41-82c5-44cd-8072-f0e70bfa886a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 00:54:56,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:54:56,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 2574 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 00:54:56,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:54:56,423 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-12 00:54:56,424 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:54:56,424 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:54:56,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765639376] [2023-11-12 00:54:56,424 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:54:56,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851314114] [2023-11-12 00:54:56,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851314114] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:54:56,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:54:56,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 00:54:56,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049016446] [2023-11-12 00:54:56,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:54:56,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:54:56,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:54:56,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:54:56,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:54:56,428 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) [2023-11-12 00:54:58,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:54:59,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:54:59,744 INFO L93 Difference]: Finished difference Result 752 states and 1158 transitions. [2023-11-12 00:54:59,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 00:54:59,745 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 [2023-11-12 00:54:59,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:54:59,751 INFO L225 Difference]: With dead ends: 752 [2023-11-12 00:54:59,751 INFO L226 Difference]: Without dead ends: 394 [2023-11-12 00:54:59,754 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 [2023-11-12 00:54:59,755 INFO L413 NwaCegarLoop]: 466 mSDtfsCounter, 48 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s 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, 3.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:54:59,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 2226 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-12 00:54:59,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2023-11-12 00:54:59,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 388. [2023-11-12 00:54:59,789 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) [2023-11-12 00:54:59,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 583 transitions. [2023-11-12 00:54:59,795 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 583 transitions. Word has length 118 [2023-11-12 00:54:59,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:54:59,796 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 583 transitions. [2023-11-12 00:54:59,796 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) [2023-11-12 00:54:59,796 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 583 transitions. [2023-11-12 00:54:59,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-12 00:54:59,798 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:54:59,799 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] [2023-11-12 00:54:59,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75a7ed41-82c5-44cd-8072-f0e70bfa886a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 00:55:00,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75a7ed41-82c5-44cd-8072-f0e70bfa886a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:00,010 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:55:00,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:55:00,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1864157050, now seen corresponding path program 1 times [2023-11-12 00:55:00,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:55:00,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327596388] [2023-11-12 00:55:00,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:00,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:55:00,158 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:55:00,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1935192526] [2023-11-12 00:55:00,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:00,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:00,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75a7ed41-82c5-44cd-8072-f0e70bfa886a/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:55:00,160 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75a7ed41-82c5-44cd-8072-f0e70bfa886a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:55:00,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75a7ed41-82c5-44cd-8072-f0e70bfa886a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 00:55:00,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:55:00,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 2628 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 00:55:00,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:55:01,070 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-11-12 00:55:01,070 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:55:01,071 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:55:01,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327596388] [2023-11-12 00:55:01,071 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:55:01,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935192526] [2023-11-12 00:55:01,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935192526] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:55:01,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:55:01,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 00:55:01,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781598547] [2023-11-12 00:55:01,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:55:01,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 00:55:01,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:55:01,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 00:55:01,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:55:01,074 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) [2023-11-12 00:55:02,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:55:06,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:55:06,318 INFO L93 Difference]: Finished difference Result 754 states and 1150 transitions. [2023-11-12 00:55:06,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 00:55:06,319 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 [2023-11-12 00:55:06,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:55:06,324 INFO L225 Difference]: With dead ends: 754 [2023-11-12 00:55:06,324 INFO L226 Difference]: Without dead ends: 396 [2023-11-12 00:55:06,327 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 [2023-11-12 00:55:06,328 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 71 mSDsluCounter, 2553 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s 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, 5.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:55:06,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 3001 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-11-12 00:55:06,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2023-11-12 00:55:06,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 388. [2023-11-12 00:55:06,355 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) [2023-11-12 00:55:06,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 583 transitions. [2023-11-12 00:55:06,361 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 583 transitions. Word has length 126 [2023-11-12 00:55:06,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:55:06,361 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 583 transitions. [2023-11-12 00:55:06,362 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) [2023-11-12 00:55:06,362 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 583 transitions. [2023-11-12 00:55:06,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-12 00:55:06,364 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:55:06,364 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] [2023-11-12 00:55:06,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75a7ed41-82c5-44cd-8072-f0e70bfa886a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 00:55:06,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75a7ed41-82c5-44cd-8072-f0e70bfa886a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:06,575 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:55:06,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:55:06,575 INFO L85 PathProgramCache]: Analyzing trace with hash 119867745, now seen corresponding path program 2 times [2023-11-12 00:55:06,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:55:06,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845306115] [2023-11-12 00:55:06,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:06,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:55:06,720 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:55:06,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1655487933] [2023-11-12 00:55:06,720 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 00:55:06,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:06,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75a7ed41-82c5-44cd-8072-f0e70bfa886a/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:55:06,726 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75a7ed41-82c5-44cd-8072-f0e70bfa886a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:55:06,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75a7ed41-82c5-44cd-8072-f0e70bfa886a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 00:55:07,841 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-12 00:55:07,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 00:55:07,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 1875 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 00:55:07,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:55:07,942 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-11-12 00:55:07,942 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:55:07,942 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:55:07,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845306115] [2023-11-12 00:55:07,943 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:55:07,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655487933] [2023-11-12 00:55:07,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655487933] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:55:07,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:55:07,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:55:07,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310819768] [2023-11-12 00:55:07,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:55:07,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:55:07,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:55:07,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:55:07,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:55:07,946 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) [2023-11-12 00:55:11,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:55:11,327 INFO L93 Difference]: Finished difference Result 713 states and 1103 transitions. [2023-11-12 00:55:11,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:55:11,328 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 [2023-11-12 00:55:11,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:55:11,333 INFO L225 Difference]: With dead ends: 713 [2023-11-12 00:55:11,333 INFO L226 Difference]: Without dead ends: 388 [2023-11-12 00:55:11,337 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 [2023-11-12 00:55:11,338 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 0 mSDsluCounter, 1342 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s 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, 3.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:55:11,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1802 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-12 00:55:11,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2023-11-12 00:55:11,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 388. [2023-11-12 00:55:11,364 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) [2023-11-12 00:55:11,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 582 transitions. [2023-11-12 00:55:11,369 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 582 transitions. Word has length 135 [2023-11-12 00:55:11,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:55:11,370 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 582 transitions. [2023-11-12 00:55:11,370 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) [2023-11-12 00:55:11,371 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 582 transitions. [2023-11-12 00:55:11,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-12 00:55:11,373 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:55:11,373 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] [2023-11-12 00:55:11,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75a7ed41-82c5-44cd-8072-f0e70bfa886a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 00:55:11,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75a7ed41-82c5-44cd-8072-f0e70bfa886a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:11,585 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:55:11,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:55:11,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1618017950, now seen corresponding path program 3 times [2023-11-12 00:55:11,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:55:11,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703697432] [2023-11-12 00:55:11,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:55:11,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:55:11,765 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:55:11,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2098942294] [2023-11-12 00:55:11,766 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-12 00:55:11,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:55:11,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75a7ed41-82c5-44cd-8072-f0e70bfa886a/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:55:11,767 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75a7ed41-82c5-44cd-8072-f0e70bfa886a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:55:11,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75a7ed41-82c5-44cd-8072-f0e70bfa886a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 00:55:12,283 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-12 00:55:12,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 00:55:12,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-12 00:55:12,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:55:12,531 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-11-12 00:55:12,531 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:55:12,879 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-12 00:55:12,879 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:55:12,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703697432] [2023-11-12 00:55:12,879 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:55:12,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098942294] [2023-11-12 00:55:12,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098942294] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:55:12,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1015668203] [2023-11-12 00:55:12,904 INFO L159 IcfgInterpreter]: Started Sifa with 83 locations of interest [2023-11-12 00:55:12,904 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:55:12,908 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:55:12,913 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:55:12,914 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs