./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 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64451c78-aabe-4f6d-a9e0-a0962919c860/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64451c78-aabe-4f6d-a9e0-a0962919c860/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64451c78-aabe-4f6d-a9e0-a0962919c860/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64451c78-aabe-4f6d-a9e0-a0962919c860/bin/utaipan-verify-mE87zJ7Ire/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_64451c78-aabe-4f6d-a9e0-a0962919c860/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64451c78-aabe-4f6d-a9e0-a0962919c860/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c5ce5ecaf845e6855240a1053cf9bb98448187512cca05d9c176538088e49244 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:13:53,304 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:13:53,379 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64451c78-aabe-4f6d-a9e0-a0962919c860/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:13:53,385 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:13:53,386 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:13:53,410 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:13:53,411 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:13:53,412 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:13:53,412 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:13:53,413 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:13:53,413 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:13:53,414 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:13:53,415 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:13:53,415 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:13:53,416 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:13:53,416 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:13:53,417 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:13:53,417 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:13:53,418 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:13:53,418 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:13:53,418 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:13:53,421 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:13:53,422 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:13:53,422 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:13:53,422 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:13:53,423 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:13:53,423 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:13:53,424 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:13:53,425 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:13:53,425 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:13:53,426 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:13:53,426 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:13:53,426 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:13:53,427 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:13:53,427 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:13:53,427 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:13:53,428 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:13:53,428 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:13:53,428 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:13:53,429 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:13:53,430 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:13:53,430 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:13:53,430 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:13:53,430 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:13:53,431 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_64451c78-aabe-4f6d-a9e0-a0962919c860/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64451c78-aabe-4f6d-a9e0-a0962919c860/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5ce5ecaf845e6855240a1053cf9bb98448187512cca05d9c176538088e49244 [2023-11-23 21:13:53,682 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:13:53,713 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:13:53,715 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:13:53,717 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:13:53,717 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:13:53,718 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64451c78-aabe-4f6d-a9e0-a0962919c860/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness_negated.i [2023-11-23 21:13:56,944 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:13:57,587 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:13:57,587 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64451c78-aabe-4f6d-a9e0-a0962919c860/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness_negated.i [2023-11-23 21:13:57,633 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64451c78-aabe-4f6d-a9e0-a0962919c860/bin/utaipan-verify-mE87zJ7Ire/data/31dabbfbd/3d033010b4164b1f9cdb92a9cae9f1d6/FLAGe525b6c88 [2023-11-23 21:13:57,651 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64451c78-aabe-4f6d-a9e0-a0962919c860/bin/utaipan-verify-mE87zJ7Ire/data/31dabbfbd/3d033010b4164b1f9cdb92a9cae9f1d6 [2023-11-23 21:13:57,654 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:13:57,656 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:13:57,657 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:13:57,658 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:13:57,664 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:13:57,665 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:13:57" (1/1) ... [2023-11-23 21:13:57,666 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c26e544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:57, skipping insertion in model container [2023-11-23 21:13:57,666 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:13:57" (1/1) ... [2023-11-23 21:13:57,784 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:13:58,073 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_64451c78-aabe-4f6d-a9e0-a0962919c860/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness_negated.i[4496,4509] [2023-11-23 21:13:58,083 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_64451c78-aabe-4f6d-a9e0-a0962919c860/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness_negated.i[4556,4569] [2023-11-23 21:13:59,597 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:59,598 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:59,598 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:59,599 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:59,601 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:59,614 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:59,616 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:59,620 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:59,622 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:59,625 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:59,630 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:59,631 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:59,635 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:00,207 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 21:14:00,209 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 21:14:00,210 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 21:14:00,211 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 21:14:00,213 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 21:14:00,214 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 21:14:00,215 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 21:14:00,215 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 21:14:00,216 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 21:14:00,217 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 21:14:00,503 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:00,511 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:00,706 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:00,712 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:00,713 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:00,713 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:00,713 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:00,716 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:00,716 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:00,717 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:00,717 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:00,718 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:00,718 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:00,718 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:00,719 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:00,723 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:00,723 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:00,724 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:00,726 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:00,734 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:00,735 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:00,751 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:00,752 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:00,752 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:00,782 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:14:00,841 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:14:00,867 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_64451c78-aabe-4f6d-a9e0-a0962919c860/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness_negated.i[4496,4509] [2023-11-23 21:14:00,870 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_64451c78-aabe-4f6d-a9e0-a0962919c860/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness_negated.i[4556,4569] [2023-11-23 21:14:00,932 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:00,938 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:00,939 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:00,939 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:00,940 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:00,955 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:00,955 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:00,957 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:00,958 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:00,959 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:00,959 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:00,960 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:00,961 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:01,007 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 21:14:01,008 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 21:14:01,010 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 21:14:01,011 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 21:14:01,012 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 21:14:01,012 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 21:14:01,013 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 21:14:01,013 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 21:14:01,014 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 21:14:01,015 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 21:14:01,068 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:01,083 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:01,089 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7739-7750] [2023-11-23 21:14:01,130 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:01,132 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:01,132 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:01,132 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:01,133 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:01,133 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:01,134 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:01,134 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:01,135 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:01,135 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:01,135 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:01,136 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:01,136 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:01,137 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:01,137 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:01,137 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:01,138 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:01,140 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:01,141 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:01,147 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:01,147 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:01,148 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:01,164 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:14:01,397 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:01,397 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:01,397 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:01,397 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:01,397 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:01,397 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:01,398 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:01,398 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:01,398 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:01,398 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:01,398 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:01,398 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:01,399 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:01,399 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:01,399 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:01,406 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:14:01,406 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:01 WrapperNode [2023-11-23 21:14:01,406 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:14:01,408 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:14:01,408 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:14:01,408 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:14:01,414 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:01" (1/1) ... [2023-11-23 21:14:01,553 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:01" (1/1) ... [2023-11-23 21:14:01,694 INFO L138 Inliner]: procedures = 696, calls = 1936, calls flagged for inlining = 59, calls inlined = 15, statements flattened = 1059 [2023-11-23 21:14:01,702 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:14:01,703 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:14:01,703 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:14:01,704 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:14:01,713 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:01" (1/1) ... [2023-11-23 21:14:01,714 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:01" (1/1) ... [2023-11-23 21:14:01,734 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:01" (1/1) ... [2023-11-23 21:14:01,735 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:01" (1/1) ... [2023-11-23 21:14:01,807 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:01" (1/1) ... [2023-11-23 21:14:01,843 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:01" (1/1) ... [2023-11-23 21:14:01,855 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:01" (1/1) ... [2023-11-23 21:14:01,863 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:01" (1/1) ... [2023-11-23 21:14:01,887 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:14:01,887 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:14:01,896 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:14:01,897 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:14:01,898 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:01" (1/1) ... [2023-11-23 21:14:01,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:14:01,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64451c78-aabe-4f6d-a9e0-a0962919c860/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:14:01,932 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64451c78-aabe-4f6d-a9e0-a0962919c860/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:14:01,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64451c78-aabe-4f6d-a9e0-a0962919c860/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:14:01,978 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2023-11-23 21:14:01,978 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2023-11-23 21:14:01,979 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-11-23 21:14:01,979 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-11-23 21:14:01,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:14:01,979 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-11-23 21:14:01,979 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-11-23 21:14:01,979 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-23 21:14:01,979 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-23 21:14:01,980 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 21:14:01,980 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 21:14:01,980 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2023-11-23 21:14:01,980 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2023-11-23 21:14:01,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 21:14:01,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:14:01,981 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 21:14:01,981 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 21:14:01,981 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 21:14:01,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 21:14:01,981 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_node [2023-11-23 21:14:01,982 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_node [2023-11-23 21:14:01,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:14:01,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:14:01,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:14:01,983 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2023-11-23 21:14:01,984 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2023-11-23 21:14:01,984 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-23 21:14:01,984 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-23 21:14:01,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:14:01,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:14:01,984 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 21:14:01,985 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 21:14:01,985 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2023-11-23 21:14:01,985 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2023-11-23 21:14:01,986 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-23 21:14:01,986 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-23 21:14:01,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 21:14:01,990 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-23 21:14:01,990 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-23 21:14:01,990 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2023-11-23 21:14:01,991 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2023-11-23 21:14:01,991 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2023-11-23 21:14:01,992 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2023-11-23 21:14:01,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 21:14:01,992 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 21:14:01,998 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:14:01,999 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:14:01,999 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-23 21:14:01,999 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-23 21:14:01,999 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2023-11-23 21:14:01,999 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2023-11-23 21:14:01,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:14:02,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:14:02,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:14:02,000 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2023-11-23 21:14:02,000 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2023-11-23 21:14:02,000 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 21:14:02,000 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 21:14:02,001 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-23 21:14:02,039 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-23 21:14:02,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:14:02,039 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-11-23 21:14:02,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-11-23 21:14:02,039 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2023-11-23 21:14:02,039 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2023-11-23 21:14:02,040 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-23 21:14:02,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-23 21:14:02,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:14:02,040 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at [2023-11-23 21:14:02,040 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at [2023-11-23 21:14:02,456 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:14:02,459 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:14:04,725 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:14:05,131 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:14:05,131 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-23 21:14:05,133 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:14:05 BoogieIcfgContainer [2023-11-23 21:14:05,133 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:14:05,137 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:14:05,137 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:14:05,140 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:14:05,141 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:13:57" (1/3) ... [2023-11-23 21:14:05,143 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18ad2193 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:14:05, skipping insertion in model container [2023-11-23 21:14:05,143 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:01" (2/3) ... [2023-11-23 21:14:05,143 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18ad2193 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:14:05, skipping insertion in model container [2023-11-23 21:14:05,144 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:14:05" (3/3) ... [2023-11-23 21:14:05,145 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_pop_harness_negated.i [2023-11-23 21:14:05,164 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:14:05,164 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-23 21:14:05,249 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:14:05,261 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;@4534d488, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:14:05,261 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-23 21:14:05,268 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) [2023-11-23 21:14:05,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-23 21:14:05,303 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:14:05,304 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] [2023-11-23 21:14:05,305 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:14:05,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:14:05,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1751445662, now seen corresponding path program 1 times [2023-11-23 21:14:05,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:14:05,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980363230] [2023-11-23 21:14:05,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:14:05,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:14:05,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:14:06,734 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2023-11-23 21:14:06,735 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:14:06,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980363230] [2023-11-23 21:14:06,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980363230] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:14:06,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475687351] [2023-11-23 21:14:06,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:14:06,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:14:06,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64451c78-aabe-4f6d-a9e0-a0962919c860/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:14:06,739 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64451c78-aabe-4f6d-a9e0-a0962919c860/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:14:06,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64451c78-aabe-4f6d-a9e0-a0962919c860/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:14:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:14:07,529 INFO L262 TraceCheckSpWp]: Trace formula consists of 2460 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:14:07,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:14:07,733 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-23 21:14:07,734 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:14:07,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475687351] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:14:07,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:14:07,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-11-23 21:14:07,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604205379] [2023-11-23 21:14:07,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:14:07,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:14:07,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:14:07,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:14:07,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:14:07,777 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) [2023-11-23 21:14:09,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:14:10,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:14:10,598 INFO L93 Difference]: Finished difference Result 741 states and 1136 transitions. [2023-11-23 21:14:10,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:14:10,601 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 [2023-11-23 21:14:10,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:14:10,628 INFO L225 Difference]: With dead ends: 741 [2023-11-23 21:14:10,628 INFO L226 Difference]: Without dead ends: 391 [2023-11-23 21:14:10,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:14:10,652 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 41 mSDsluCounter, 1354 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s 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, 2.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:14:10,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 1835 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-23 21:14:10,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2023-11-23 21:14:10,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2023-11-23 21:14:10,745 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) [2023-11-23 21:14:10,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 571 transitions. [2023-11-23 21:14:10,753 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 571 transitions. Word has length 125 [2023-11-23 21:14:10,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:14:10,754 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 571 transitions. [2023-11-23 21:14:10,754 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) [2023-11-23 21:14:10,754 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 571 transitions. [2023-11-23 21:14:10,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-23 21:14:10,758 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:14:10,758 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] [2023-11-23 21:14:10,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64451c78-aabe-4f6d-a9e0-a0962919c860/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:14:10,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64451c78-aabe-4f6d-a9e0-a0962919c860/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-23 21:14:10,983 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:14:10,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:14:10,984 INFO L85 PathProgramCache]: Analyzing trace with hash 927818192, now seen corresponding path program 1 times [2023-11-23 21:14:10,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:14:10,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042936157] [2023-11-23 21:14:10,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:14:10,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:14:11,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:14:11,824 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-11-23 21:14:11,825 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:14:11,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042936157] [2023-11-23 21:14:11,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042936157] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:14:11,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467417805] [2023-11-23 21:14:11,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:14:11,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:14:11,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64451c78-aabe-4f6d-a9e0-a0962919c860/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:14:11,831 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64451c78-aabe-4f6d-a9e0-a0962919c860/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:14:11,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64451c78-aabe-4f6d-a9e0-a0962919c860/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:14:12,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:14:12,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 2510 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 21:14:12,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:14:12,698 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-23 21:14:12,699 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:14:12,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467417805] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:14:12,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:14:12,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-11-23 21:14:12,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403549711] [2023-11-23 21:14:12,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:14:12,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:14:12,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:14:12,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:14:12,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-23 21:14:12,703 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) [2023-11-23 21:14:16,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:14:16,023 INFO L93 Difference]: Finished difference Result 751 states and 1130 transitions. [2023-11-23 21:14:16,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 21:14:16,024 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 [2023-11-23 21:14:16,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:14:16,031 INFO L225 Difference]: With dead ends: 751 [2023-11-23 21:14:16,031 INFO L226 Difference]: Without dead ends: 404 [2023-11-23 21:14:16,035 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 [2023-11-23 21:14:16,036 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 59 mSDsluCounter, 2195 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 2659 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:14:16,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 2659 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-23 21:14:16,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2023-11-23 21:14:16,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 402. [2023-11-23 21:14:16,094 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) [2023-11-23 21:14:16,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 602 transitions. [2023-11-23 21:14:16,103 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 602 transitions. Word has length 133 [2023-11-23 21:14:16,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:14:16,104 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 602 transitions. [2023-11-23 21:14:16,104 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) [2023-11-23 21:14:16,104 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 602 transitions. [2023-11-23 21:14:16,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-23 21:14:16,107 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:14:16,107 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] [2023-11-23 21:14:16,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64451c78-aabe-4f6d-a9e0-a0962919c860/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:14:16,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64451c78-aabe-4f6d-a9e0-a0962919c860/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:14:16,333 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:14:16,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:14:16,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1409371616, now seen corresponding path program 1 times [2023-11-23 21:14:16,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:14:16,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098828646] [2023-11-23 21:14:16,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:14:16,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:14:16,508 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:14:16,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [971245115] [2023-11-23 21:14:16,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:14:16,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:14:16,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64451c78-aabe-4f6d-a9e0-a0962919c860/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:14:16,512 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64451c78-aabe-4f6d-a9e0-a0962919c860/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:14:16,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64451c78-aabe-4f6d-a9e0-a0962919c860/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 21:14:17,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:14:17,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 2642 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 21:14:17,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:14:17,432 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-23 21:14:17,433 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:14:17,433 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:14:17,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098828646] [2023-11-23 21:14:17,433 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:14:17,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971245115] [2023-11-23 21:14:17,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971245115] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:14:17,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:14:17,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:14:17,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821545598] [2023-11-23 21:14:17,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:14:17,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:14:17,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:14:17,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:14:17,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:14:17,437 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) [2023-11-23 21:14:19,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:14:19,734 INFO L93 Difference]: Finished difference Result 766 states and 1177 transitions. [2023-11-23 21:14:19,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 21:14:19,735 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 [2023-11-23 21:14:19,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:14:19,740 INFO L225 Difference]: With dead ends: 766 [2023-11-23 21:14:19,741 INFO L226 Difference]: Without dead ends: 408 [2023-11-23 21:14:19,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:14:19,752 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 48 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s 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, 2.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:14:19,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 2280 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-23 21:14:19,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2023-11-23 21:14:19,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 402. [2023-11-23 21:14:19,806 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) [2023-11-23 21:14:19,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 602 transitions. [2023-11-23 21:14:19,812 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 602 transitions. Word has length 142 [2023-11-23 21:14:19,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:14:19,814 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 602 transitions. [2023-11-23 21:14:19,815 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) [2023-11-23 21:14:19,815 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 602 transitions. [2023-11-23 21:14:19,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-23 21:14:19,821 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:14:19,821 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] [2023-11-23 21:14:19,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64451c78-aabe-4f6d-a9e0-a0962919c860/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 21:14:20,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64451c78-aabe-4f6d-a9e0-a0962919c860/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:14:20,047 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:14:20,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:14:20,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1537642793, now seen corresponding path program 1 times [2023-11-23 21:14:20,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:14:20,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881178597] [2023-11-23 21:14:20,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:14:20,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:14:20,191 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:14:20,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1188633290] [2023-11-23 21:14:20,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:14:20,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:14:20,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64451c78-aabe-4f6d-a9e0-a0962919c860/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:14:20,193 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64451c78-aabe-4f6d-a9e0-a0962919c860/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:14:20,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64451c78-aabe-4f6d-a9e0-a0962919c860/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 21:14:21,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:14:21,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 2696 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 21:14:21,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:14:21,191 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-11-23 21:14:21,192 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:14:21,192 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:14:21,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881178597] [2023-11-23 21:14:21,192 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:14:21,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188633290] [2023-11-23 21:14:21,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188633290] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:14:21,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:14:21,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 21:14:21,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401941] [2023-11-23 21:14:21,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:14:21,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 21:14:21,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:14:21,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 21:14:21,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:14:21,195 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) [2023-11-23 21:14:24,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:14:24,387 INFO L93 Difference]: Finished difference Result 768 states and 1169 transitions. [2023-11-23 21:14:24,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 21:14:24,388 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 [2023-11-23 21:14:24,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:14:24,392 INFO L225 Difference]: With dead ends: 768 [2023-11-23 21:14:24,393 INFO L226 Difference]: Without dead ends: 410 [2023-11-23 21:14:24,395 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 [2023-11-23 21:14:24,397 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 71 mSDsluCounter, 2619 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 3079 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:14:24,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 3079 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-23 21:14:24,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2023-11-23 21:14:24,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 402. [2023-11-23 21:14:24,424 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) [2023-11-23 21:14:24,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 602 transitions. [2023-11-23 21:14:24,430 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 602 transitions. Word has length 150 [2023-11-23 21:14:24,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:14:24,431 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 602 transitions. [2023-11-23 21:14:24,431 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) [2023-11-23 21:14:24,431 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 602 transitions. [2023-11-23 21:14:24,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-11-23 21:14:24,434 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:14:24,434 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] [2023-11-23 21:14:24,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64451c78-aabe-4f6d-a9e0-a0962919c860/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 21:14:24,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64451c78-aabe-4f6d-a9e0-a0962919c860/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:14:24,648 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:14:24,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:14:24,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1477983703, now seen corresponding path program 2 times [2023-11-23 21:14:24,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:14:24,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118948555] [2023-11-23 21:14:24,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:14:24,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:14:24,822 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:14:24,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1826461943] [2023-11-23 21:14:24,826 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 21:14:24,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:14:24,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64451c78-aabe-4f6d-a9e0-a0962919c860/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:14:24,828 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64451c78-aabe-4f6d-a9e0-a0962919c860/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:14:24,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64451c78-aabe-4f6d-a9e0-a0962919c860/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 21:14:25,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-23 21:14:25,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:14:25,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 1825 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 21:14:25,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:14:25,522 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-23 21:14:25,522 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:14:25,522 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:14:25,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118948555] [2023-11-23 21:14:25,522 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:14:25,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826461943] [2023-11-23 21:14:25,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826461943] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:14:25,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:14:25,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:14:25,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107990102] [2023-11-23 21:14:25,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:14:25,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:14:25,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:14:25,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:14:25,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:14:25,525 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) [2023-11-23 21:14:26,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:14:28,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:14:28,159 INFO L93 Difference]: Finished difference Result 410 states and 610 transitions. [2023-11-23 21:14:28,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:14:28,160 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 [2023-11-23 21:14:28,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:14:28,165 INFO L225 Difference]: With dead ends: 410 [2023-11-23 21:14:28,165 INFO L226 Difference]: Without dead ends: 408 [2023-11-23 21:14:28,166 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 [2023-11-23 21:14:28,167 INFO L413 NwaCegarLoop]: 511 mSDtfsCounter, 5 mSDsluCounter, 2019 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s 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, 2.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:14:28,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2530 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-23 21:14:28,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2023-11-23 21:14:28,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 407. [2023-11-23 21:14:28,243 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) [2023-11-23 21:14:28,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 607 transitions. [2023-11-23 21:14:28,251 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 607 transitions. Word has length 159 [2023-11-23 21:14:28,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:14:28,256 INFO L495 AbstractCegarLoop]: Abstraction has 407 states and 607 transitions. [2023-11-23 21:14:28,256 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) [2023-11-23 21:14:28,256 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 607 transitions. [2023-11-23 21:14:28,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-11-23 21:14:28,261 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:14:28,261 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] [2023-11-23 21:14:28,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64451c78-aabe-4f6d-a9e0-a0962919c860/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 21:14:28,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64451c78-aabe-4f6d-a9e0-a0962919c860/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:14:28,475 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:14:28,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:14:28,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1813022847, now seen corresponding path program 3 times [2023-11-23 21:14:28,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:14:28,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737844209] [2023-11-23 21:14:28,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:14:28,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:14:28,668 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:14:28,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1002745218] [2023-11-23 21:14:28,669 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-23 21:14:28,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:14:28,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64451c78-aabe-4f6d-a9e0-a0962919c860/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:14:28,670 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64451c78-aabe-4f6d-a9e0-a0962919c860/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:14:28,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64451c78-aabe-4f6d-a9e0-a0962919c860/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 21:14:29,195 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-23 21:14:29,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:14:29,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-23 21:14:29,210 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:14:29,451 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-11-23 21:14:29,452 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:14:30,013 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2023-11-23 21:14:30,013 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:14:30,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737844209] [2023-11-23 21:14:30,014 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:14:30,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002745218] [2023-11-23 21:14:30,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002745218] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:14:30,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [339270400] [2023-11-23 21:14:30,045 INFO L159 IcfgInterpreter]: Started Sifa with 97 locations of interest [2023-11-23 21:14:30,045 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:14:30,050 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:14:30,056 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:14:30,057 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs