./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20f18f8-ff6f-4f33-b8e3-798bbb720b73/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20f18f8-ff6f-4f33-b8e3-798bbb720b73/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20f18f8-ff6f-4f33-b8e3-798bbb720b73/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20f18f8-ff6f-4f33-b8e3-798bbb720b73/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20f18f8-ff6f-4f33-b8e3-798bbb720b73/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20f18f8-ff6f-4f33-b8e3-798bbb720b73/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c5ce5ecaf845e6855240a1053cf9bb98448187512cca05d9c176538088e49244 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:16:54,478 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:16:54,590 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20f18f8-ff6f-4f33-b8e3-798bbb720b73/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-24 23:16:54,603 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:16:54,604 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:16:54,650 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:16:54,651 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:16:54,652 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:16:54,653 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:16:54,659 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:16:54,660 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:16:54,661 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:16:54,662 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:16:54,664 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:16:54,664 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:16:54,665 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:16:54,666 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:16:54,666 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:16:54,667 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:16:54,667 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:16:54,668 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:16:54,669 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:16:54,670 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:16:54,671 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:16:54,671 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:16:54,672 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:16:54,673 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:16:54,673 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:16:54,674 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:16:54,674 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:16:54,676 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:16:54,676 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:16:54,677 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:16:54,677 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:16:54,677 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:16:54,678 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:16:54,678 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:16:54,678 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:16:54,679 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:16:54,679 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:16:54,679 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:16:54,680 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:16:54,680 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:16:54,681 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:16:54,681 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_c20f18f8-ff6f-4f33-b8e3-798bbb720b73/bin/utaipan-verify-SwPr7d2a91/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20f18f8-ff6f-4f33-b8e3-798bbb720b73/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5ce5ecaf845e6855240a1053cf9bb98448187512cca05d9c176538088e49244 [2023-11-24 23:16:55,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:16:55,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:16:55,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:16:55,058 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:16:55,059 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:16:55,061 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20f18f8-ff6f-4f33-b8e3-798bbb720b73/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness_negated.i [2023-11-24 23:16:58,290 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:16:58,965 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:16:58,967 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20f18f8-ff6f-4f33-b8e3-798bbb720b73/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness_negated.i [2023-11-24 23:16:59,027 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20f18f8-ff6f-4f33-b8e3-798bbb720b73/bin/utaipan-verify-SwPr7d2a91/data/d75b44a21/ed64f4c5b7e84571bf125ba76d4ef877/FLAGeddef553c [2023-11-24 23:16:59,045 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20f18f8-ff6f-4f33-b8e3-798bbb720b73/bin/utaipan-verify-SwPr7d2a91/data/d75b44a21/ed64f4c5b7e84571bf125ba76d4ef877 [2023-11-24 23:16:59,047 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:16:59,049 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:16:59,051 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:16:59,051 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:16:59,061 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:16:59,062 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:16:59" (1/1) ... [2023-11-24 23:16:59,063 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c832c0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:59, skipping insertion in model container [2023-11-24 23:16:59,063 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:16:59" (1/1) ... [2023-11-24 23:16:59,236 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:16:59,577 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_c20f18f8-ff6f-4f33-b8e3-798bbb720b73/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness_negated.i[4496,4509] [2023-11-24 23:16:59,588 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_c20f18f8-ff6f-4f33-b8e3-798bbb720b73/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness_negated.i[4556,4569] [2023-11-24 23:17:00,918 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:00,919 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:00,920 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:00,921 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:00,923 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:00,941 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:00,941 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:00,944 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:00,945 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:00,947 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:00,948 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:00,949 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:00,950 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:01,654 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-24 23:17:01,657 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-24 23:17:01,660 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-24 23:17:01,662 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-24 23:17:01,667 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-24 23:17:01,668 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-24 23:17:01,670 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-24 23:17:01,671 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-24 23:17:01,684 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-24 23:17:01,685 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-24 23:17:02,008 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,022 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,135 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,136 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,137 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,137 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,138 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,138 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,139 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,140 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,140 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,141 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,141 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,142 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,142 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,146 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,147 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,147 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,148 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,152 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,153 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,162 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,163 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,164 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,186 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:17:02,253 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:17:02,281 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_c20f18f8-ff6f-4f33-b8e3-798bbb720b73/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness_negated.i[4496,4509] [2023-11-24 23:17:02,285 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_c20f18f8-ff6f-4f33-b8e3-798bbb720b73/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness_negated.i[4556,4569] [2023-11-24 23:17:02,425 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,426 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,426 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,427 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,428 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,436 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,456 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,457 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,458 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,459 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,460 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,463 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,463 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,528 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-24 23:17:02,529 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-24 23:17:02,530 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-24 23:17:02,531 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-24 23:17:02,532 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-24 23:17:02,533 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-24 23:17:02,534 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-24 23:17:02,534 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-24 23:17:02,535 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-24 23:17:02,535 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-24 23:17:02,593 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,599 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,607 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7739-7750] [2023-11-24 23:17:02,640 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,641 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,641 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,641 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,642 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,642 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,642 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,643 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,643 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,644 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,644 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,645 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,645 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,646 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,646 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,647 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,647 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,650 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,650 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,663 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,664 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,664 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:17:02,682 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:17:02,940 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:17:02,941 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:17:02,942 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:17:02,942 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:17:02,943 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:17:02,943 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:17:02,943 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:17:02,944 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:17:02,944 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:17:02,944 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:17:02,944 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:17:02,945 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:17:02,945 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:17:02,945 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:17:02,946 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:17:02,952 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:17:02,953 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:17:02 WrapperNode [2023-11-24 23:17:02,953 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:17:02,955 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:17:02,956 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:17:02,956 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:17:02,970 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:17:02" (1/1) ... [2023-11-24 23:17:03,098 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:17:02" (1/1) ... [2023-11-24 23:17:03,187 INFO L138 Inliner]: procedures = 696, calls = 1936, calls flagged for inlining = 59, calls inlined = 15, statements flattened = 1059 [2023-11-24 23:17:03,188 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:17:03,188 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:17:03,189 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:17:03,189 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:17:03,199 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:17:02" (1/1) ... [2023-11-24 23:17:03,203 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:17:02" (1/1) ... [2023-11-24 23:17:03,214 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:17:02" (1/1) ... [2023-11-24 23:17:03,219 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:17:02" (1/1) ... [2023-11-24 23:17:03,306 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:17:02" (1/1) ... [2023-11-24 23:17:03,314 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:17:02" (1/1) ... [2023-11-24 23:17:03,339 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:17:02" (1/1) ... [2023-11-24 23:17:03,365 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:17:02" (1/1) ... [2023-11-24 23:17:03,393 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:17:03,400 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:17:03,401 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:17:03,401 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:17:03,402 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:17:02" (1/1) ... [2023-11-24 23:17:03,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:17:03,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20f18f8-ff6f-4f33-b8e3-798bbb720b73/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:17:03,440 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20f18f8-ff6f-4f33-b8e3-798bbb720b73/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:17:03,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20f18f8-ff6f-4f33-b8e3-798bbb720b73/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:17:03,498 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2023-11-24 23:17:03,498 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2023-11-24 23:17:03,498 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-11-24 23:17:03,498 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-11-24 23:17:03,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:17:03,499 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-11-24 23:17:03,499 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-11-24 23:17:03,499 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-24 23:17:03,499 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-24 23:17:03,500 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-24 23:17:03,500 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-24 23:17:03,500 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2023-11-24 23:17:03,500 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2023-11-24 23:17:03,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-24 23:17:03,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:17:03,501 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-24 23:17:03,501 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-24 23:17:03,501 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-24 23:17:03,502 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-24 23:17:03,502 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_node [2023-11-24 23:17:03,502 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_node [2023-11-24 23:17:03,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:17:03,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:17:03,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:17:03,503 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2023-11-24 23:17:03,503 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2023-11-24 23:17:03,504 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-24 23:17:03,504 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-24 23:17:03,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:17:03,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:17:03,504 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-24 23:17:03,504 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-24 23:17:03,505 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2023-11-24 23:17:03,505 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2023-11-24 23:17:03,506 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-24 23:17:03,506 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-24 23:17:03,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-24 23:17:03,511 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-24 23:17:03,511 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-24 23:17:03,511 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2023-11-24 23:17:03,511 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2023-11-24 23:17:03,511 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2023-11-24 23:17:03,513 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2023-11-24 23:17:03,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-24 23:17:03,514 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-24 23:17:03,520 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-24 23:17:03,520 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-24 23:17:03,520 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-24 23:17:03,521 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-24 23:17:03,521 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2023-11-24 23:17:03,521 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2023-11-24 23:17:03,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:17:03,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:17:03,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-24 23:17:03,522 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2023-11-24 23:17:03,522 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2023-11-24 23:17:03,522 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-24 23:17:03,522 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-24 23:17:03,522 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-24 23:17:03,522 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-24 23:17:03,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:17:03,523 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-11-24 23:17:03,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-11-24 23:17:03,523 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2023-11-24 23:17:03,524 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2023-11-24 23:17:03,524 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-24 23:17:03,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-24 23:17:03,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:17:03,524 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at [2023-11-24 23:17:03,524 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at [2023-11-24 23:17:03,998 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:17:04,001 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:17:07,172 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:17:07,545 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:17:07,545 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-24 23:17:07,547 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:17:07 BoogieIcfgContainer [2023-11-24 23:17:07,547 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:17:07,551 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:17:07,552 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:17:07,555 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:17:07,556 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:16:59" (1/3) ... [2023-11-24 23:17:07,558 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77b25e7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:17:07, skipping insertion in model container [2023-11-24 23:17:07,558 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:17:02" (2/3) ... [2023-11-24 23:17:07,558 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77b25e7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:17:07, skipping insertion in model container [2023-11-24 23:17:07,558 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:17:07" (3/3) ... [2023-11-24 23:17:07,560 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_pop_harness_negated.i [2023-11-24 23:17:07,581 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:17:07,581 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-24 23:17:07,646 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:17:07,653 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;@7ef5012f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:17:07,653 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-24 23:17:07,659 INFO L276 IsEmpty]: Start isEmpty. Operand has 392 states, 200 states have (on average 1.2) internal successors, (240), 203 states have internal predecessors, (240), 162 states have call successors, (162), 28 states have call predecessors, (162), 28 states have return successors, (162), 162 states have call predecessors, (162), 162 states have call successors, (162) [2023-11-24 23:17:07,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-24 23:17:07,680 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:17:07,682 INFO L195 NwaCegarLoop]: trace histogram [9, 6, 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] [2023-11-24 23:17:07,682 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:17:07,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:17:07,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1751445662, now seen corresponding path program 1 times [2023-11-24 23:17:07,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:17:07,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782676793] [2023-11-24 23:17:07,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:07,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:17:08,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:09,071 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2023-11-24 23:17:09,072 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:17:09,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782676793] [2023-11-24 23:17:09,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782676793] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:17:09,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737232745] [2023-11-24 23:17:09,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:09,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:17:09,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20f18f8-ff6f-4f33-b8e3-798bbb720b73/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:17:09,080 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20f18f8-ff6f-4f33-b8e3-798bbb720b73/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:17:09,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20f18f8-ff6f-4f33-b8e3-798bbb720b73/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:17:09,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:09,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 2460 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:17:09,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:17:10,095 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-24 23:17:10,096 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:17:10,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737232745] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:17:10,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:17:10,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-11-24 23:17:10,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933179496] [2023-11-24 23:17:10,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:17:10,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:17:10,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:17:10,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:17:10,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-24 23:17:10,143 INFO L87 Difference]: Start difference. First operand has 392 states, 200 states have (on average 1.2) internal successors, (240), 203 states have internal predecessors, (240), 162 states have call successors, (162), 28 states have call predecessors, (162), 28 states have return successors, (162), 162 states have call predecessors, (162), 162 states have call successors, (162) Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-11-24 23:17:12,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:17:13,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:17:13,362 INFO L93 Difference]: Finished difference Result 741 states and 1136 transitions. [2023-11-24 23:17:13,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:17:13,364 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 125 [2023-11-24 23:17:13,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:17:13,381 INFO L225 Difference]: With dead ends: 741 [2023-11-24 23:17:13,381 INFO L226 Difference]: Without dead ends: 391 [2023-11-24 23:17:13,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-24 23:17:13,404 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 41 mSDsluCounter, 1354 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 1835 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:17:13,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 1835 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-24 23:17:13,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2023-11-24 23:17:13,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2023-11-24 23:17:13,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 199 states have (on average 1.185929648241206) internal successors, (236), 203 states have internal predecessors, (236), 162 states have call successors, (162), 28 states have call predecessors, (162), 28 states have return successors, (173), 160 states have call predecessors, (173), 160 states have call successors, (173) [2023-11-24 23:17:13,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 571 transitions. [2023-11-24 23:17:13,513 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 571 transitions. Word has length 125 [2023-11-24 23:17:13,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:17:13,514 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 571 transitions. [2023-11-24 23:17:13,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-11-24 23:17:13,515 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 571 transitions. [2023-11-24 23:17:13,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-24 23:17:13,539 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:17:13,539 INFO L195 NwaCegarLoop]: trace histogram [9, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:17:13,552 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20f18f8-ff6f-4f33-b8e3-798bbb720b73/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-24 23:17:13,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20f18f8-ff6f-4f33-b8e3-798bbb720b73/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-24 23:17:13,750 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:17:13,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:17:13,751 INFO L85 PathProgramCache]: Analyzing trace with hash 927818192, now seen corresponding path program 1 times [2023-11-24 23:17:13,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:17:13,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161205329] [2023-11-24 23:17:13,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:13,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:17:13,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:14,602 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-11-24 23:17:14,604 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:17:14,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161205329] [2023-11-24 23:17:14,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161205329] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:17:14,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598116270] [2023-11-24 23:17:14,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:14,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:17:14,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20f18f8-ff6f-4f33-b8e3-798bbb720b73/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:17:14,612 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20f18f8-ff6f-4f33-b8e3-798bbb720b73/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:17:14,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20f18f8-ff6f-4f33-b8e3-798bbb720b73/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:17:15,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:15,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 2510 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 23:17:15,405 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:17:15,583 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-24 23:17:15,583 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:17:15,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598116270] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:17:15,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:17:15,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-11-24 23:17:15,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805599927] [2023-11-24 23:17:15,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:17:15,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 23:17:15,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:17:15,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 23:17:15,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-24 23:17:15,589 INFO L87 Difference]: Start difference. First operand 391 states and 571 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2023-11-24 23:17:18,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:17:21,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:17:21,762 INFO L93 Difference]: Finished difference Result 751 states and 1130 transitions. [2023-11-24 23:17:21,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 23:17:21,763 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 133 [2023-11-24 23:17:21,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:17:21,771 INFO L225 Difference]: With dead ends: 751 [2023-11-24 23:17:21,771 INFO L226 Difference]: Without dead ends: 404 [2023-11-24 23:17:21,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-11-24 23:17:21,776 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 59 mSDsluCounter, 2195 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 2659 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:17:21,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 2659 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 599 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2023-11-24 23:17:21,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2023-11-24 23:17:21,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 402. [2023-11-24 23:17:21,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 207 states have (on average 1.1884057971014492) internal successors, (246), 211 states have internal predecessors, (246), 164 states have call successors, (164), 28 states have call predecessors, (164), 29 states have return successors, (192), 163 states have call predecessors, (192), 162 states have call successors, (192) [2023-11-24 23:17:21,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 602 transitions. [2023-11-24 23:17:21,828 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 602 transitions. Word has length 133 [2023-11-24 23:17:21,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:17:21,830 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 602 transitions. [2023-11-24 23:17:21,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2023-11-24 23:17:21,830 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 602 transitions. [2023-11-24 23:17:21,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-24 23:17:21,835 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:17:21,835 INFO L195 NwaCegarLoop]: trace histogram [9, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:17:21,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20f18f8-ff6f-4f33-b8e3-798bbb720b73/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 23:17:22,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20f18f8-ff6f-4f33-b8e3-798bbb720b73/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:17:22,047 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:17:22,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:17:22,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1409371616, now seen corresponding path program 1 times [2023-11-24 23:17:22,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:17:22,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273338739] [2023-11-24 23:17:22,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:22,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:17:22,230 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:17:22,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1223958242] [2023-11-24 23:17:22,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:22,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:17:22,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20f18f8-ff6f-4f33-b8e3-798bbb720b73/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:17:22,236 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20f18f8-ff6f-4f33-b8e3-798bbb720b73/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:17:22,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20f18f8-ff6f-4f33-b8e3-798bbb720b73/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 23:17:22,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:23,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 2642 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 23:17:23,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:17:23,114 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-24 23:17:23,114 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:17:23,114 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:17:23,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273338739] [2023-11-24 23:17:23,115 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:17:23,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223958242] [2023-11-24 23:17:23,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223958242] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:17:23,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:17:23,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 23:17:23,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936185198] [2023-11-24 23:17:23,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:17:23,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:17:23,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:17:23,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:17:23,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:17:23,118 INFO L87 Difference]: Start difference. First operand 402 states and 602 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2023-11-24 23:17:26,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:17:26,503 INFO L93 Difference]: Finished difference Result 766 states and 1177 transitions. [2023-11-24 23:17:26,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 23:17:26,504 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) Word has length 142 [2023-11-24 23:17:26,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:17:26,510 INFO L225 Difference]: With dead ends: 766 [2023-11-24 23:17:26,510 INFO L226 Difference]: Without dead ends: 408 [2023-11-24 23:17:26,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-24 23:17:26,515 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 48 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 2280 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:17:26,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 2280 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-24 23:17:26,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2023-11-24 23:17:26,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 402. [2023-11-24 23:17:26,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 207 states have (on average 1.1884057971014492) internal successors, (246), 211 states have internal predecessors, (246), 164 states have call successors, (164), 28 states have call predecessors, (164), 29 states have return successors, (192), 163 states have call predecessors, (192), 162 states have call successors, (192) [2023-11-24 23:17:26,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 602 transitions. [2023-11-24 23:17:26,592 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 602 transitions. Word has length 142 [2023-11-24 23:17:26,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:17:26,593 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 602 transitions. [2023-11-24 23:17:26,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2023-11-24 23:17:26,594 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 602 transitions. [2023-11-24 23:17:26,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-24 23:17:26,597 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:17:26,598 INFO L195 NwaCegarLoop]: trace histogram [9, 6, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:17:26,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20f18f8-ff6f-4f33-b8e3-798bbb720b73/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-24 23:17:26,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20f18f8-ff6f-4f33-b8e3-798bbb720b73/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:17:26,812 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:17:26,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:17:26,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1537642793, now seen corresponding path program 1 times [2023-11-24 23:17:26,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:17:26,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254638173] [2023-11-24 23:17:26,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:26,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:17:26,987 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:17:26,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1362940197] [2023-11-24 23:17:26,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:26,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:17:26,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20f18f8-ff6f-4f33-b8e3-798bbb720b73/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:17:26,989 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20f18f8-ff6f-4f33-b8e3-798bbb720b73/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:17:27,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20f18f8-ff6f-4f33-b8e3-798bbb720b73/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 23:17:27,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:27,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 2696 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 23:17:27,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:17:27,946 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-11-24 23:17:27,946 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:17:27,947 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:17:27,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254638173] [2023-11-24 23:17:27,947 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:17:27,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362940197] [2023-11-24 23:17:27,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362940197] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:17:27,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:17:27,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-24 23:17:27,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815834674] [2023-11-24 23:17:27,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:17:27,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 23:17:27,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:17:27,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 23:17:27,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-24 23:17:27,950 INFO L87 Difference]: Start difference. First operand 402 states and 602 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 5 states have call predecessors, (29), 5 states have call successors, (29) [2023-11-24 23:17:30,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:17:33,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:17:33,121 INFO L93 Difference]: Finished difference Result 768 states and 1169 transitions. [2023-11-24 23:17:33,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 23:17:33,122 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 5 states have call predecessors, (29), 5 states have call successors, (29) Word has length 150 [2023-11-24 23:17:33,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:17:33,127 INFO L225 Difference]: With dead ends: 768 [2023-11-24 23:17:33,127 INFO L226 Difference]: Without dead ends: 410 [2023-11-24 23:17:33,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-24 23:17:33,132 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 71 mSDsluCounter, 2619 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 3079 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:17:33,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 3079 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 721 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2023-11-24 23:17:33,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2023-11-24 23:17:33,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 402. [2023-11-24 23:17:33,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 207 states have (on average 1.1884057971014492) internal successors, (246), 211 states have internal predecessors, (246), 164 states have call successors, (164), 28 states have call predecessors, (164), 29 states have return successors, (192), 163 states have call predecessors, (192), 162 states have call successors, (192) [2023-11-24 23:17:33,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 602 transitions. [2023-11-24 23:17:33,184 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 602 transitions. Word has length 150 [2023-11-24 23:17:33,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:17:33,184 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 602 transitions. [2023-11-24 23:17:33,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 5 states have call predecessors, (29), 5 states have call successors, (29) [2023-11-24 23:17:33,185 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 602 transitions. [2023-11-24 23:17:33,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-11-24 23:17:33,189 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:17:33,189 INFO L195 NwaCegarLoop]: trace histogram [9, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:17:33,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20f18f8-ff6f-4f33-b8e3-798bbb720b73/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-24 23:17:33,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20f18f8-ff6f-4f33-b8e3-798bbb720b73/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:17:33,401 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:17:33,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:17:33,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1477983703, now seen corresponding path program 2 times [2023-11-24 23:17:33,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:17:33,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021998030] [2023-11-24 23:17:33,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:33,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:17:33,533 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:17:33,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1071019703] [2023-11-24 23:17:33,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 23:17:33,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:17:33,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20f18f8-ff6f-4f33-b8e3-798bbb720b73/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:17:33,535 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20f18f8-ff6f-4f33-b8e3-798bbb720b73/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:17:33,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20f18f8-ff6f-4f33-b8e3-798bbb720b73/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 23:17:34,207 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-24 23:17:34,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:17:34,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 1825 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 23:17:34,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:17:34,270 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-24 23:17:34,270 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:17:34,270 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:17:34,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021998030] [2023-11-24 23:17:34,270 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:17:34,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071019703] [2023-11-24 23:17:34,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071019703] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:17:34,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:17:34,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 23:17:34,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146428933] [2023-11-24 23:17:34,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:17:34,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:17:34,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:17:34,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:17:34,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:17:34,277 INFO L87 Difference]: Start difference. First operand 402 states and 602 transitions. Second operand has 6 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2023-11-24 23:17:36,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:17:37,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:17:39,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:17:39,628 INFO L93 Difference]: Finished difference Result 410 states and 610 transitions. [2023-11-24 23:17:39,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:17:39,629 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 159 [2023-11-24 23:17:39,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:17:39,639 INFO L225 Difference]: With dead ends: 410 [2023-11-24 23:17:39,639 INFO L226 Difference]: Without dead ends: 408 [2023-11-24 23:17:39,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-24 23:17:39,641 INFO L413 NwaCegarLoop]: 511 mSDtfsCounter, 5 mSDsluCounter, 2019 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2530 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:17:39,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2530 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-11-24 23:17:39,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2023-11-24 23:17:39,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 407. [2023-11-24 23:17:39,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 210 states have (on average 1.1857142857142857) internal successors, (249), 214 states have internal predecessors, (249), 165 states have call successors, (165), 29 states have call predecessors, (165), 30 states have return successors, (193), 164 states have call predecessors, (193), 163 states have call successors, (193) [2023-11-24 23:17:39,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 607 transitions. [2023-11-24 23:17:39,704 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 607 transitions. Word has length 159 [2023-11-24 23:17:39,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:17:39,706 INFO L495 AbstractCegarLoop]: Abstraction has 407 states and 607 transitions. [2023-11-24 23:17:39,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2023-11-24 23:17:39,706 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 607 transitions. [2023-11-24 23:17:39,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-11-24 23:17:39,709 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:17:39,709 INFO L195 NwaCegarLoop]: trace histogram [9, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:17:39,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20f18f8-ff6f-4f33-b8e3-798bbb720b73/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-24 23:17:39,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20f18f8-ff6f-4f33-b8e3-798bbb720b73/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:17:39,919 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:17:39,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:17:39,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1813022847, now seen corresponding path program 3 times [2023-11-24 23:17:39,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:17:39,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057377454] [2023-11-24 23:17:39,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:39,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:17:40,072 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:17:40,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [781921801] [2023-11-24 23:17:40,072 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-24 23:17:40,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:17:40,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20f18f8-ff6f-4f33-b8e3-798bbb720b73/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:17:40,076 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20f18f8-ff6f-4f33-b8e3-798bbb720b73/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:17:40,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20f18f8-ff6f-4f33-b8e3-798bbb720b73/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-24 23:17:40,615 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-24 23:17:40,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:17:40,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-24 23:17:40,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:17:40,797 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-11-24 23:17:40,797 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:17:41,248 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2023-11-24 23:17:41,249 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:17:41,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057377454] [2023-11-24 23:17:41,249 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:17:41,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781921801] [2023-11-24 23:17:41,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781921801] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:17:41,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [891690842] [2023-11-24 23:17:41,275 INFO L159 IcfgInterpreter]: Started Sifa with 97 locations of interest [2023-11-24 23:17:41,275 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:17:41,280 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:17:41,285 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:17:41,286 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs