./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness_negated.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_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/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_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/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_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/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 92ad6b662f02418ebaf958a5d76b8b40c1669b4ab9a0ab643b0fe8bf2b83d3a1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 01:01:34,147 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 01:01:34,285 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-12 01:01:34,294 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 01:01:34,295 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 01:01:34,345 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 01:01:34,346 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 01:01:34,347 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 01:01:34,348 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 01:01:34,356 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 01:01:34,356 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 01:01:34,358 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 01:01:34,359 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 01:01:34,361 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 01:01:34,361 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 01:01:34,362 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 01:01:34,362 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 01:01:34,362 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 01:01:34,363 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 01:01:34,364 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 01:01:34,364 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 01:01:34,365 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 01:01:34,366 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 01:01:34,367 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 01:01:34,367 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 01:01:34,368 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 01:01:34,368 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 01:01:34,392 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 01:01:34,392 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 01:01:34,393 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 01:01:34,393 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 01:01:34,393 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 01:01:34,394 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 01:01:34,394 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:01:34,395 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 01:01:34,395 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 01:01:34,395 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 01:01:34,396 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 01:01:34,396 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 01:01:34,396 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 01:01:34,397 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 01:01:34,398 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 01:01:34,399 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_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 92ad6b662f02418ebaf958a5d76b8b40c1669b4ab9a0ab643b0fe8bf2b83d3a1 [2023-11-12 01:01:34,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 01:01:34,715 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 01:01:34,718 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 01:01:34,721 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 01:01:34,722 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 01:01:34,723 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness_negated.i [2023-11-12 01:01:37,959 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 01:01:38,504 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 01:01:38,505 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness_negated.i [2023-11-12 01:01:38,560 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/bin/utaipan-verify-NcY6lQBIFX/data/64777bbe8/5c3aea161c94494daa613885d2077219/FLAG50249f203 [2023-11-12 01:01:38,581 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/bin/utaipan-verify-NcY6lQBIFX/data/64777bbe8/5c3aea161c94494daa613885d2077219 [2023-11-12 01:01:38,587 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 01:01:38,589 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 01:01:38,591 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 01:01:38,591 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 01:01:38,597 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 01:01:38,598 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:01:38" (1/1) ... [2023-11-12 01:01:38,599 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a7879c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:38, skipping insertion in model container [2023-11-12 01:01:38,599 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:01:38" (1/1) ... [2023-11-12 01:01:38,734 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 01:01:39,038 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_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness_negated.i[4499,4512] [2023-11-12 01:01:39,047 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_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness_negated.i[4559,4572] [2023-11-12 01:01:40,084 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:40,085 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:40,085 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:40,089 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:40,091 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:40,121 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:40,124 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:40,129 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:40,135 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:40,138 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:40,148 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:40,149 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:40,150 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:40,552 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-12 01:01:40,554 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-12 01:01:40,555 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-12 01:01:40,557 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-12 01:01:40,559 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-12 01:01:40,560 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-12 01:01:40,561 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-12 01:01:40,561 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-12 01:01:40,562 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-12 01:01:40,563 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-12 01:01:40,793 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:40,815 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:40,941 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:40,943 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:40,943 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:40,944 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:40,945 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:40,947 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:40,948 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:40,950 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:40,951 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:40,952 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:40,952 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:40,953 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:40,954 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:40,960 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:40,961 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:40,961 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:40,962 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:40,972 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:40,974 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:40,990 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:40,991 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:40,991 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:41,015 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:41,015 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:41,016 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:41,023 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:01:41,081 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 01:01:41,107 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_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness_negated.i[4499,4512] [2023-11-12 01:01:41,110 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_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness_negated.i[4559,4572] [2023-11-12 01:01:41,181 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:41,182 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:41,182 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:41,183 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:41,184 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:41,193 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:41,198 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:41,200 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:41,200 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:41,201 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:41,203 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:41,204 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:41,204 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:41,251 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-12 01:01:41,252 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-12 01:01:41,252 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-12 01:01:41,255 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-12 01:01:41,256 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-12 01:01:41,257 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-12 01:01:41,257 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-12 01:01:41,258 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-12 01:01:41,259 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-12 01:01:41,259 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-12 01:01:41,317 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:41,324 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:41,330 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7739-7750] [2023-11-12 01:01:41,399 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:41,408 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:41,408 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:41,409 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:41,409 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:41,424 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:41,424 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:41,425 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:41,425 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:41,425 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:41,426 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:41,426 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:41,426 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:41,432 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:41,432 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:41,433 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:41,433 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:41,436 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:41,436 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:41,445 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:41,448 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:41,448 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:41,474 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:41,475 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:41,476 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 01:01:41,479 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:01:41,824 WARN L672 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:01:41,824 WARN L672 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:01:41,825 WARN L672 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:01:41,825 WARN L672 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:01:41,825 WARN L672 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:01:41,826 WARN L672 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:01:41,826 WARN L672 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:01:41,826 WARN L672 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:01:41,826 WARN L672 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:01:41,826 WARN L672 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:01:41,826 WARN L672 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:01:41,826 WARN L672 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:01:41,827 WARN L672 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:01:41,828 WARN L672 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:01:41,828 WARN L672 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:01:41,836 INFO L206 MainTranslator]: Completed translation [2023-11-12 01:01:41,837 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:41 WrapperNode [2023-11-12 01:01:41,837 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 01:01:41,839 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 01:01:41,839 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 01:01:41,839 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 01:01:41,847 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:41" (1/1) ... [2023-11-12 01:01:41,979 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:41" (1/1) ... [2023-11-12 01:01:42,087 INFO L138 Inliner]: procedures = 696, calls = 1922, calls flagged for inlining = 60, calls inlined = 15, statements flattened = 1063 [2023-11-12 01:01:42,091 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 01:01:42,092 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 01:01:42,093 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 01:01:42,093 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 01:01:42,103 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:41" (1/1) ... [2023-11-12 01:01:42,103 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:41" (1/1) ... [2023-11-12 01:01:42,127 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:41" (1/1) ... [2023-11-12 01:01:42,127 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:41" (1/1) ... [2023-11-12 01:01:42,200 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:41" (1/1) ... [2023-11-12 01:01:42,207 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:41" (1/1) ... [2023-11-12 01:01:42,217 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:41" (1/1) ... [2023-11-12 01:01:42,226 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:41" (1/1) ... [2023-11-12 01:01:42,256 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 01:01:42,257 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 01:01:42,257 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 01:01:42,257 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 01:01:42,258 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:41" (1/1) ... [2023-11-12 01:01:42,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:01:42,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:01:42,297 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 01:01:42,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 01:01:42,338 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2023-11-12 01:01:42,338 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2023-11-12 01:01:42,338 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-11-12 01:01:42,338 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-11-12 01:01:42,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 01:01:42,338 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-11-12 01:01:42,338 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-11-12 01:01:42,338 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-12 01:01:42,339 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-12 01:01:42,339 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-12 01:01:42,339 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-12 01:01:42,339 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2023-11-12 01:01:42,339 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2023-11-12 01:01:42,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-12 01:01:42,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 01:01:42,340 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-12 01:01:42,340 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-12 01:01:42,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-12 01:01:42,340 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-12 01:01:42,343 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_node [2023-11-12 01:01:42,344 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_node [2023-11-12 01:01:42,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 01:01:42,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 01:01:42,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 01:01:42,344 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2023-11-12 01:01:42,345 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2023-11-12 01:01:42,345 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-12 01:01:42,345 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-12 01:01:42,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 01:01:42,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 01:01:42,345 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-12 01:01:42,345 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-12 01:01:42,345 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-12 01:01:42,345 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-12 01:01:42,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-12 01:01:42,346 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-12 01:01:42,346 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-12 01:01:42,346 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2023-11-12 01:01:42,346 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2023-11-12 01:01:42,346 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2023-11-12 01:01:42,346 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2023-11-12 01:01:42,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-12 01:01:42,346 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-12 01:01:42,347 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 01:01:42,347 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 01:01:42,347 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-12 01:01:42,347 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-12 01:01:42,347 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2023-11-12 01:01:42,347 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2023-11-12 01:01:42,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 01:01:42,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 01:01:42,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 01:01:42,347 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2023-11-12 01:01:42,348 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2023-11-12 01:01:42,348 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-12 01:01:42,348 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-12 01:01:42,348 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-12 01:01:42,348 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-12 01:01:42,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 01:01:42,348 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-11-12 01:01:42,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-11-12 01:01:42,348 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2023-11-12 01:01:42,349 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2023-11-12 01:01:42,349 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-12 01:01:42,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-12 01:01:42,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 01:01:42,349 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at [2023-11-12 01:01:42,349 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at [2023-11-12 01:01:42,711 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 01:01:42,714 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 01:01:45,443 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 01:01:45,821 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 01:01:45,821 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-11-12 01:01:45,827 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:01:45 BoogieIcfgContainer [2023-11-12 01:01:45,828 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 01:01:45,831 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 01:01:45,831 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 01:01:45,834 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 01:01:45,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 01:01:38" (1/3) ... [2023-11-12 01:01:45,836 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42849ed1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:01:45, skipping insertion in model container [2023-11-12 01:01:45,836 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:41" (2/3) ... [2023-11-12 01:01:45,837 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42849ed1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:01:45, skipping insertion in model container [2023-11-12 01:01:45,837 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:01:45" (3/3) ... [2023-11-12 01:01:45,839 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_remove_harness_negated.i [2023-11-12 01:01:45,859 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 01:01:45,860 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-12 01:01:45,944 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 01:01:45,955 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;@1a6a84bc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 01:01:45,956 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-12 01:01:45,963 INFO L276 IsEmpty]: Start isEmpty. Operand has 390 states, 200 states have (on average 1.22) internal successors, (244), 205 states have internal predecessors, (244), 160 states have call successors, (160), 27 states have call predecessors, (160), 27 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) [2023-11-12 01:01:45,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-12 01:01:45,989 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:01:45,990 INFO L195 NwaCegarLoop]: trace histogram [9, 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] [2023-11-12 01:01:45,990 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 01:01:45,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:01:45,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1411630163, now seen corresponding path program 1 times [2023-11-12 01:01:46,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:01:46,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911085062] [2023-11-12 01:01:46,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:01:46,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:01:46,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:01:47,288 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-11-12 01:01:47,289 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:01:47,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911085062] [2023-11-12 01:01:47,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911085062] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 01:01:47,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586403104] [2023-11-12 01:01:47,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:01:47,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:01:47,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:01:47,300 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 01:01:47,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 01:01:48,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:01:48,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 2369 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-12 01:01:48,087 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:01:48,130 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-12 01:01:48,138 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:01:48,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586403104] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:01:48,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 01:01:48,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2023-11-12 01:01:48,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061054926] [2023-11-12 01:01:48,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:01:48,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 01:01:48,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:01:48,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 01:01:48,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:01:48,207 INFO L87 Difference]: Start difference. First operand has 390 states, 200 states have (on average 1.22) internal successors, (244), 205 states have internal predecessors, (244), 160 states have call successors, (160), 27 states have call predecessors, (160), 27 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) Second operand has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-12 01:01:48,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:01:48,906 INFO L93 Difference]: Finished difference Result 711 states and 1086 transitions. [2023-11-12 01:01:48,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 01:01:48,910 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 106 [2023-11-12 01:01:48,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:01:48,926 INFO L225 Difference]: With dead ends: 711 [2023-11-12 01:01:48,927 INFO L226 Difference]: Without dead ends: 387 [2023-11-12 01:01:48,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 107 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 01:01:48,944 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-12 01:01:48,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 514 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-12 01:01:49,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2023-11-12 01:01:49,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2023-11-12 01:01:49,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 199 states have (on average 1.1909547738693467) internal successors, (237), 202 states have internal predecessors, (237), 160 states have call successors, (160), 27 states have call predecessors, (160), 26 states have return successors, (158), 158 states have call predecessors, (158), 158 states have call successors, (158) [2023-11-12 01:01:49,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 555 transitions. [2023-11-12 01:01:49,131 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 555 transitions. Word has length 106 [2023-11-12 01:01:49,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:01:49,133 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 555 transitions. [2023-11-12 01:01:49,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-12 01:01:49,134 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 555 transitions. [2023-11-12 01:01:49,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-12 01:01:49,138 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:01:49,139 INFO L195 NwaCegarLoop]: trace histogram [11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:01:49,156 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-12 01:01:49,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:01:49,350 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 01:01:49,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:01:49,350 INFO L85 PathProgramCache]: Analyzing trace with hash 89999019, now seen corresponding path program 1 times [2023-11-12 01:01:49,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:01:49,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21635524] [2023-11-12 01:01:49,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:01:49,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:01:49,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:01:50,078 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2023-11-12 01:01:50,078 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:01:50,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21635524] [2023-11-12 01:01:50,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21635524] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 01:01:50,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635438461] [2023-11-12 01:01:50,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:01:50,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:01:50,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:01:50,084 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 01:01:50,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 01:01:50,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:01:50,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 2447 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 01:01:50,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:01:50,909 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-12 01:01:50,909 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:01:50,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635438461] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:01:50,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 01:01:50,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-11-12 01:01:50,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184653275] [2023-11-12 01:01:50,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:01:50,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 01:01:50,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:01:50,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 01:01:50,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-12 01:01:50,913 INFO L87 Difference]: Start difference. First operand 387 states and 555 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2023-11-12 01:01:54,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:01:54,102 INFO L93 Difference]: Finished difference Result 746 states and 1086 transitions. [2023-11-12 01:01:54,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 01:01:54,103 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 118 [2023-11-12 01:01:54,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:01:54,110 INFO L225 Difference]: With dead ends: 746 [2023-11-12 01:01:54,110 INFO L226 Difference]: Without dead ends: 389 [2023-11-12 01:01:54,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-12 01:01:54,114 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 50 mSDsluCounter, 1360 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 1845 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:01:54,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 1845 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-12 01:01:54,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2023-11-12 01:01:54,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 389. [2023-11-12 01:01:54,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 200 states have (on average 1.19) internal successors, (238), 204 states have internal predecessors, (238), 160 states have call successors, (160), 27 states have call predecessors, (160), 27 states have return successors, (171), 158 states have call predecessors, (171), 158 states have call successors, (171) [2023-11-12 01:01:54,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 569 transitions. [2023-11-12 01:01:54,161 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 569 transitions. Word has length 118 [2023-11-12 01:01:54,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:01:54,161 INFO L495 AbstractCegarLoop]: Abstraction has 389 states and 569 transitions. [2023-11-12 01:01:54,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2023-11-12 01:01:54,162 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 569 transitions. [2023-11-12 01:01:54,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-12 01:01:54,165 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:01:54,165 INFO L195 NwaCegarLoop]: trace histogram [11, 3, 3, 3, 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] [2023-11-12 01:01:54,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 01:01:54,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:01:54,376 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 01:01:54,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:01:54,376 INFO L85 PathProgramCache]: Analyzing trace with hash 230913999, now seen corresponding path program 1 times [2023-11-12 01:01:54,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:01:54,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025745037] [2023-11-12 01:01:54,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:01:54,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:01:54,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:01:55,165 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-12 01:01:55,165 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:01:55,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025745037] [2023-11-12 01:01:55,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025745037] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 01:01:55,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155755910] [2023-11-12 01:01:55,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:01:55,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:01:55,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:01:55,171 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 01:01:55,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 01:01:55,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:01:55,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 2497 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 01:01:55,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:01:56,043 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-12 01:01:56,043 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:01:56,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155755910] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:01:56,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 01:01:56,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2023-11-12 01:01:56,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564988210] [2023-11-12 01:01:56,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:01:56,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 01:01:56,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:01:56,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 01:01:56,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-11-12 01:01:56,046 INFO L87 Difference]: Start difference. First operand 389 states and 569 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-12 01:01:58,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 01:02:00,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:02:00,604 INFO L93 Difference]: Finished difference Result 761 states and 1145 transitions. [2023-11-12 01:02:00,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 01:02:00,605 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 126 [2023-11-12 01:02:00,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:02:00,611 INFO L225 Difference]: With dead ends: 761 [2023-11-12 01:02:00,611 INFO L226 Difference]: Without dead ends: 402 [2023-11-12 01:02:00,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-11-12 01:02:00,616 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 65 mSDsluCounter, 2221 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 2692 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-12 01:02:00,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 2692 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-11-12 01:02:00,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2023-11-12 01:02:00,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 400. [2023-11-12 01:02:00,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 208 states have (on average 1.1923076923076923) internal successors, (248), 212 states have internal predecessors, (248), 162 states have call successors, (162), 27 states have call predecessors, (162), 28 states have return successors, (190), 161 states have call predecessors, (190), 160 states have call successors, (190) [2023-11-12 01:02:00,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 600 transitions. [2023-11-12 01:02:00,663 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 600 transitions. Word has length 126 [2023-11-12 01:02:00,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:02:00,664 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 600 transitions. [2023-11-12 01:02:00,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-12 01:02:00,665 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 600 transitions. [2023-11-12 01:02:00,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-12 01:02:00,669 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:02:00,669 INFO L195 NwaCegarLoop]: trace histogram [11, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:02:00,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 01:02:00,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:02:00,880 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 01:02:00,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:02:00,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1485284666, now seen corresponding path program 1 times [2023-11-12 01:02:00,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:02:00,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501987122] [2023-11-12 01:02:00,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:02:00,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:02:01,085 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 01:02:01,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1757610441] [2023-11-12 01:02:01,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:02:01,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:02:01,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:02:01,100 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 01:02:01,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 01:02:01,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:02:01,897 INFO L262 TraceCheckSpWp]: Trace formula consists of 2629 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 01:02:01,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:02:02,005 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-12 01:02:02,006 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:02:02,006 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:02:02,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501987122] [2023-11-12 01:02:02,006 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 01:02:02,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757610441] [2023-11-12 01:02:02,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757610441] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:02:02,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:02:02,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 01:02:02,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559867361] [2023-11-12 01:02:02,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:02:02,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 01:02:02,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:02:02,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 01:02:02,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 01:02:02,009 INFO L87 Difference]: Start difference. First operand 400 states and 600 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2023-11-12 01:02:04,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:02:04,767 INFO L93 Difference]: Finished difference Result 776 states and 1192 transitions. [2023-11-12 01:02:04,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 01:02:04,768 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 135 [2023-11-12 01:02:04,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:02:04,773 INFO L225 Difference]: With dead ends: 776 [2023-11-12 01:02:04,773 INFO L226 Difference]: Without dead ends: 406 [2023-11-12 01:02:04,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-12 01:02:04,777 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 57 mSDsluCounter, 1815 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 2298 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-12 01:02:04,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 2298 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-12 01:02:04,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2023-11-12 01:02:04,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 400. [2023-11-12 01:02:04,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 208 states have (on average 1.1923076923076923) internal successors, (248), 212 states have internal predecessors, (248), 162 states have call successors, (162), 27 states have call predecessors, (162), 28 states have return successors, (190), 161 states have call predecessors, (190), 160 states have call successors, (190) [2023-11-12 01:02:04,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 600 transitions. [2023-11-12 01:02:04,812 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 600 transitions. Word has length 135 [2023-11-12 01:02:04,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:02:04,813 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 600 transitions. [2023-11-12 01:02:04,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2023-11-12 01:02:04,814 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 600 transitions. [2023-11-12 01:02:04,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-11-12 01:02:04,816 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:02:04,816 INFO L195 NwaCegarLoop]: trace histogram [11, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:02:04,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 01:02:05,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:02:05,028 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 01:02:05,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:02:05,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1521367169, now seen corresponding path program 1 times [2023-11-12 01:02:05,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:02:05,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954216135] [2023-11-12 01:02:05,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:02:05,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:02:05,218 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 01:02:05,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1941544695] [2023-11-12 01:02:05,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:02:05,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:02:05,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:02:05,220 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 01:02:05,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 01:02:06,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:02:06,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 2683 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 01:02:06,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:02:06,226 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-11-12 01:02:06,226 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:02:06,226 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:02:06,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954216135] [2023-11-12 01:02:06,227 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 01:02:06,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941544695] [2023-11-12 01:02:06,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941544695] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:02:06,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:02:06,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 01:02:06,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109591025] [2023-11-12 01:02:06,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:02:06,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 01:02:06,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:02:06,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 01:02:06,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-12 01:02:06,231 INFO L87 Difference]: Start difference. First operand 400 states and 600 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2023-11-12 01:02:08,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 01:02:12,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:02:12,200 INFO L93 Difference]: Finished difference Result 778 states and 1184 transitions. [2023-11-12 01:02:12,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 01:02:12,201 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) Word has length 143 [2023-11-12 01:02:12,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:02:12,205 INFO L225 Difference]: With dead ends: 778 [2023-11-12 01:02:12,206 INFO L226 Difference]: Without dead ends: 408 [2023-11-12 01:02:12,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 137 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 01:02:12,210 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 80 mSDsluCounter, 2642 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 3107 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-11-12 01:02:12,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 3107 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-11-12 01:02:12,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2023-11-12 01:02:12,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 400. [2023-11-12 01:02:12,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 208 states have (on average 1.1923076923076923) internal successors, (248), 212 states have internal predecessors, (248), 162 states have call successors, (162), 27 states have call predecessors, (162), 28 states have return successors, (190), 161 states have call predecessors, (190), 160 states have call successors, (190) [2023-11-12 01:02:12,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 600 transitions. [2023-11-12 01:02:12,242 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 600 transitions. Word has length 143 [2023-11-12 01:02:12,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:02:12,242 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 600 transitions. [2023-11-12 01:02:12,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2023-11-12 01:02:12,243 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 600 transitions. [2023-11-12 01:02:12,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-11-12 01:02:12,245 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:02:12,246 INFO L195 NwaCegarLoop]: trace histogram [11, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:02:12,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 01:02:12,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:02:12,460 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 01:02:12,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:02:12,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1990601530, now seen corresponding path program 2 times [2023-11-12 01:02:12,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:02:12,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396862397] [2023-11-12 01:02:12,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:02:12,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:02:12,630 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 01:02:12,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1350877210] [2023-11-12 01:02:12,631 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 01:02:12,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:02:12,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:02:12,632 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 01:02:12,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 01:02:13,387 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-12 01:02:13,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 01:02:13,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 1805 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 01:02:13,403 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:02:13,442 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2023-11-12 01:02:13,443 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:02:13,443 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:02:13,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396862397] [2023-11-12 01:02:13,443 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 01:02:13,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350877210] [2023-11-12 01:02:13,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350877210] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:02:13,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:02:13,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 01:02:13,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140267990] [2023-11-12 01:02:13,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:02:13,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 01:02:13,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:02:13,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 01:02:13,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 01:02:13,446 INFO L87 Difference]: Start difference. First operand 400 states and 600 transitions. Second operand has 6 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-12 01:02:16,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:02:16,624 INFO L93 Difference]: Finished difference Result 408 states and 608 transitions. [2023-11-12 01:02:16,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 01:02:16,624 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) Word has length 152 [2023-11-12 01:02:16,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:02:16,629 INFO L225 Difference]: With dead ends: 408 [2023-11-12 01:02:16,629 INFO L226 Difference]: Without dead ends: 406 [2023-11-12 01:02:16,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 01:02:16,632 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 5 mSDsluCounter, 2015 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2525 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:02:16,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2525 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-12 01:02:16,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2023-11-12 01:02:16,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 405. [2023-11-12 01:02:16,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 211 states have (on average 1.1895734597156398) internal successors, (251), 215 states have internal predecessors, (251), 163 states have call successors, (163), 28 states have call predecessors, (163), 29 states have return successors, (191), 162 states have call predecessors, (191), 161 states have call successors, (191) [2023-11-12 01:02:16,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 605 transitions. [2023-11-12 01:02:16,665 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 605 transitions. Word has length 152 [2023-11-12 01:02:16,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:02:16,670 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 605 transitions. [2023-11-12 01:02:16,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-12 01:02:16,671 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 605 transitions. [2023-11-12 01:02:16,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-12 01:02:16,674 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:02:16,674 INFO L195 NwaCegarLoop]: trace histogram [11, 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:02:16,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-12 01:02:16,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:02:16,885 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 01:02:16,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:02:16,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1537622607, now seen corresponding path program 3 times [2023-11-12 01:02:16,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:02:16,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248660448] [2023-11-12 01:02:16,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:02:16,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:02:17,049 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 01:02:17,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2122682228] [2023-11-12 01:02:17,050 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-12 01:02:17,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:02:17,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:02:17,051 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 01:02:17,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dbfbf2f-8ae1-4ed0-824c-d622b8a56389/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 01:02:17,595 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-12 01:02:17,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 01:02:17,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 673 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-12 01:02:17,610 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:02:17,872 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 94 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-12 01:02:17,873 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 01:02:18,273 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2023-11-12 01:02:18,273 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:02:18,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248660448] [2023-11-12 01:02:18,274 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 01:02:18,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122682228] [2023-11-12 01:02:18,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122682228] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 01:02:18,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2115238252] [2023-11-12 01:02:18,300 INFO L159 IcfgInterpreter]: Started Sifa with 89 locations of interest [2023-11-12 01:02:18,300 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 01:02:18,304 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 01:02:18,309 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 01:02:18,309 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs