./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d91e1d-62ab-4449-a425-b53444178eb7/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d91e1d-62ab-4449-a425-b53444178eb7/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d91e1d-62ab-4449-a425-b53444178eb7/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d91e1d-62ab-4449-a425-b53444178eb7/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d91e1d-62ab-4449-a425-b53444178eb7/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d91e1d-62ab-4449-a425-b53444178eb7/bin/utaipan-verify-YMUCfTKeje --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 1d3eb02e894c2acef7732d0e57c112cc2c197f8f03d7c13822f169fbed4dc5e5 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 01:22:10,184 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 01:22:10,293 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d91e1d-62ab-4449-a425-b53444178eb7/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-09 01:22:10,301 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 01:22:10,302 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 01:22:10,334 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 01:22:10,337 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 01:22:10,337 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 01:22:10,338 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 01:22:10,340 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 01:22:10,340 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 01:22:10,341 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 01:22:10,341 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 01:22:10,342 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 01:22:10,342 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 01:22:10,344 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 01:22:10,345 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 01:22:10,345 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 01:22:10,345 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 01:22:10,346 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 01:22:10,346 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 01:22:10,350 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 01:22:10,351 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 01:22:10,351 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 01:22:10,352 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 01:22:10,352 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 01:22:10,352 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 01:22:10,352 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 01:22:10,353 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 01:22:10,353 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 01:22:10,353 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 01:22:10,353 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 01:22:10,354 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 01:22:10,356 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 01:22:10,356 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 01:22:10,357 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 01:22:10,357 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 01:22:10,357 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 01:22:10,358 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 01:22:10,358 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 01:22:10,359 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 01:22:10,359 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 01:22:10,359 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 01:22:10,360 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 01:22:10,360 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_f7d91e1d-62ab-4449-a425-b53444178eb7/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d91e1d-62ab-4449-a425-b53444178eb7/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d3eb02e894c2acef7732d0e57c112cc2c197f8f03d7c13822f169fbed4dc5e5 [2024-11-09 01:22:10,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 01:22:10,794 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 01:22:10,797 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 01:22:10,799 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 01:22:10,799 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 01:22:10,801 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d91e1d-62ab-4449-a425-b53444178eb7/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i Unable to find full path for "g++" [2024-11-09 01:22:13,068 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 01:22:13,774 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 01:22:13,774 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d91e1d-62ab-4449-a425-b53444178eb7/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i [2024-11-09 01:22:13,826 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d91e1d-62ab-4449-a425-b53444178eb7/bin/utaipan-verify-YMUCfTKeje/data/94687f3d7/32dce9a0d1e6421c8e68fdbefa0061bf/FLAG3610fd182 [2024-11-09 01:22:13,848 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d91e1d-62ab-4449-a425-b53444178eb7/bin/utaipan-verify-YMUCfTKeje/data/94687f3d7/32dce9a0d1e6421c8e68fdbefa0061bf [2024-11-09 01:22:13,851 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 01:22:13,854 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 01:22:13,856 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 01:22:13,857 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 01:22:13,864 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 01:22:13,865 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 01:22:13" (1/1) ... [2024-11-09 01:22:13,868 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25bbdf3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:22:13, skipping insertion in model container [2024-11-09 01:22:13,868 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 01:22:13" (1/1) ... [2024-11-09 01:22:14,000 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 01:22:14,399 WARN L250 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_f7d91e1d-62ab-4449-a425-b53444178eb7/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4504,4517] [2024-11-09 01:22:14,409 WARN L250 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_f7d91e1d-62ab-4449-a425-b53444178eb7/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4564,4577] [2024-11-09 01:22:15,507 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:15,510 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:15,511 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:15,511 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:15,516 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:15,533 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:15,533 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:15,536 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:15,537 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:15,539 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:15,541 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:15,541 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:15,542 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:16,422 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:16,422 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:16,437 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:16,452 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:16,622 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:16,624 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:16,625 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:16,626 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:16,626 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:16,627 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:16,628 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:16,629 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:16,630 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:16,630 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:16,631 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:16,632 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:16,633 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:16,639 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:16,640 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:16,641 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:16,642 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:16,646 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:16,651 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:16,667 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:16,672 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:16,673 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:16,711 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 01:22:16,778 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 01:22:16,803 WARN L250 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_f7d91e1d-62ab-4449-a425-b53444178eb7/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4504,4517] [2024-11-09 01:22:16,804 WARN L250 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_f7d91e1d-62ab-4449-a425-b53444178eb7/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4564,4577] [2024-11-09 01:22:16,923 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:16,926 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:16,926 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:16,927 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:16,928 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:16,941 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:16,941 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:16,942 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:16,943 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:16,944 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:16,945 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:16,946 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:16,946 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:17,076 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:17,077 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:17,079 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:17,085 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:17,092 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7776-7787] [2024-11-09 01:22:17,130 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:17,133 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:17,133 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:17,134 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:17,134 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:17,134 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:17,135 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:17,135 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:17,136 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:17,137 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:17,138 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:17,139 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:17,140 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:17,141 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:17,142 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:17,142 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:17,143 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:17,146 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:17,146 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:17,155 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:17,156 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:17,156 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 01:22:17,170 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 01:22:17,473 INFO L204 MainTranslator]: Completed translation [2024-11-09 01:22:17,473 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:22:17 WrapperNode [2024-11-09 01:22:17,474 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 01:22:17,474 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 01:22:17,475 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 01:22:17,475 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 01:22:17,487 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:22:17" (1/1) ... [2024-11-09 01:22:17,639 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:22:17" (1/1) ... [2024-11-09 01:22:17,747 INFO L138 Inliner]: procedures = 686, calls = 1900, calls flagged for inlining = 59, calls inlined = 14, statements flattened = 847 [2024-11-09 01:22:17,751 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 01:22:17,752 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 01:22:17,752 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 01:22:17,752 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 01:22:17,772 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:22:17" (1/1) ... [2024-11-09 01:22:17,772 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:22:17" (1/1) ... [2024-11-09 01:22:17,790 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:22:17" (1/1) ... [2024-11-09 01:22:17,793 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:22:17" (1/1) ... [2024-11-09 01:22:17,860 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:22:17" (1/1) ... [2024-11-09 01:22:17,869 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:22:17" (1/1) ... [2024-11-09 01:22:17,889 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:22:17" (1/1) ... [2024-11-09 01:22:17,896 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:22:17" (1/1) ... [2024-11-09 01:22:17,916 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 01:22:17,919 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 01:22:17,919 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 01:22:17,919 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 01:22:17,923 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:22:17" (1/1) ... [2024-11-09 01:22:17,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 01:22:17,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d91e1d-62ab-4449-a425-b53444178eb7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:22:17,962 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d91e1d-62ab-4449-a425-b53444178eb7/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 01:22:17,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d91e1d-62ab-4449-a425-b53444178eb7/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 01:22:18,004 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2024-11-09 01:22:18,006 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2024-11-09 01:22:18,006 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2024-11-09 01:22:18,007 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2024-11-09 01:22:18,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 01:22:18,008 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2024-11-09 01:22:18,008 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2024-11-09 01:22:18,008 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2024-11-09 01:22:18,008 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2024-11-09 01:22:18,009 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-09 01:22:18,009 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-09 01:22:18,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-09 01:22:18,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 01:22:18,009 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-11-09 01:22:18,009 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-11-09 01:22:18,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 01:22:18,010 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 01:22:18,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 01:22:18,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 01:22:18,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-09 01:22:18,011 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2024-11-09 01:22:18,011 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2024-11-09 01:22:18,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 01:22:18,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 01:22:18,011 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-09 01:22:18,015 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-09 01:22:18,015 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2024-11-09 01:22:18,016 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2024-11-09 01:22:18,016 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2024-11-09 01:22:18,016 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2024-11-09 01:22:18,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-09 01:22:18,016 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2024-11-09 01:22:18,017 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2024-11-09 01:22:18,017 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2024-11-09 01:22:18,017 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2024-11-09 01:22:18,017 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2024-11-09 01:22:18,017 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2024-11-09 01:22:18,017 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-09 01:22:18,018 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-09 01:22:18,018 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2024-11-09 01:22:18,018 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2024-11-09 01:22:18,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 01:22:18,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 01:22:18,019 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_down [2024-11-09 01:22:18,019 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_down [2024-11-09 01:22:18,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-09 01:22:18,019 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2024-11-09 01:22:18,019 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2024-11-09 01:22:18,020 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-09 01:22:18,020 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-09 01:22:18,020 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2024-11-09 01:22:18,020 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2024-11-09 01:22:18,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 01:22:18,021 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2024-11-09 01:22:18,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2024-11-09 01:22:18,021 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2024-11-09 01:22:18,021 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2024-11-09 01:22:18,021 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-09 01:22:18,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-09 01:22:18,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 01:22:18,559 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 01:22:18,563 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 01:22:23,607 INFO L? ?]: Removed 211 outVars from TransFormulas that were not future-live. [2024-11-09 01:22:23,607 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 01:22:24,154 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 01:22:24,156 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 01:22:24,157 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 01:22:24 BoogieIcfgContainer [2024-11-09 01:22:24,158 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 01:22:24,160 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 01:22:24,163 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 01:22:24,166 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 01:22:24,167 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 01:22:13" (1/3) ... [2024-11-09 01:22:24,167 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d6cb396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 01:22:24, skipping insertion in model container [2024-11-09 01:22:24,169 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:22:17" (2/3) ... [2024-11-09 01:22:24,170 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d6cb396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 01:22:24, skipping insertion in model container [2024-11-09 01:22:24,170 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 01:22:24" (3/3) ... [2024-11-09 01:22:24,173 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_down_harness.i [2024-11-09 01:22:24,195 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 01:22:24,196 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 01:22:24,295 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 01:22:24,305 INFO L333 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, 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;@6df50c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 01:22:24,306 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 01:22:24,312 INFO L276 IsEmpty]: Start isEmpty. Operand has 274 states, 145 states have (on average 1.206896551724138) internal successors, (175), 146 states have internal predecessors, (175), 104 states have call successors, (104), 23 states have call predecessors, (104), 23 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2024-11-09 01:22:24,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-09 01:22:24,328 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:22:24,329 INFO L215 NwaCegarLoop]: trace histogram [9, 7, 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] [2024-11-09 01:22:24,330 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:22:24,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:22:24,336 INFO L85 PathProgramCache]: Analyzing trace with hash 418691051, now seen corresponding path program 1 times [2024-11-09 01:22:24,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:22:24,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621191243] [2024-11-09 01:22:24,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:22:24,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:22:31,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:22:33,618 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2024-11-09 01:22:33,618 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:22:33,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621191243] [2024-11-09 01:22:33,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621191243] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:22:33,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033384511] [2024-11-09 01:22:33,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:22:33,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:22:33,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d91e1d-62ab-4449-a425-b53444178eb7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:22:33,623 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d91e1d-62ab-4449-a425-b53444178eb7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:22:33,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d91e1d-62ab-4449-a425-b53444178eb7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 01:22:41,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:22:41,175 INFO L255 TraceCheckSpWp]: Trace formula consists of 4376 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 01:22:41,190 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:22:41,713 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-09 01:22:41,713 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 01:22:41,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033384511] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:22:41,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 01:22:41,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-09 01:22:41,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424545510] [2024-11-09 01:22:41,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:22:41,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 01:22:41,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:22:41,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 01:22:41,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-09 01:22:41,769 INFO L87 Difference]: Start difference. First operand has 274 states, 145 states have (on average 1.206896551724138) internal successors, (175), 146 states have internal predecessors, (175), 104 states have call successors, (104), 23 states have call predecessors, (104), 23 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2024-11-09 01:22:43,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 01:22:46,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 01:22:48,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 01:22:50,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:22:50,426 INFO L93 Difference]: Finished difference Result 508 states and 741 transitions. [2024-11-09 01:22:50,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 01:22:50,432 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 121 [2024-11-09 01:22:50,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:22:50,454 INFO L225 Difference]: With dead ends: 508 [2024-11-09 01:22:50,454 INFO L226 Difference]: Without dead ends: 274 [2024-11-09 01:22:50,464 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-09 01:22:50,473 INFO L432 NwaCegarLoop]: 330 mSDtfsCounter, 22 mSDsluCounter, 936 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2024-11-09 01:22:50,474 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 1266 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 194 Invalid, 3 Unknown, 0 Unchecked, 8.5s Time] [2024-11-09 01:22:50,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2024-11-09 01:22:50,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2024-11-09 01:22:50,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 145 states have (on average 1.186206896551724) internal successors, (172), 147 states have internal predecessors, (172), 104 states have call successors, (104), 23 states have call predecessors, (104), 24 states have return successors, (107), 103 states have call predecessors, (107), 103 states have call successors, (107) [2024-11-09 01:22:50,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 383 transitions. [2024-11-09 01:22:50,558 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 383 transitions. Word has length 121 [2024-11-09 01:22:50,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:22:50,560 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 383 transitions. [2024-11-09 01:22:50,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2024-11-09 01:22:50,560 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 383 transitions. [2024-11-09 01:22:50,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-09 01:22:50,567 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:22:50,567 INFO L215 NwaCegarLoop]: trace histogram [9, 7, 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] [2024-11-09 01:22:50,589 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d91e1d-62ab-4449-a425-b53444178eb7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 01:22:50,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d91e1d-62ab-4449-a425-b53444178eb7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:22:50,769 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:22:50,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:22:50,769 INFO L85 PathProgramCache]: Analyzing trace with hash -350131499, now seen corresponding path program 1 times [2024-11-09 01:22:50,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:22:50,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187091723] [2024-11-09 01:22:50,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:22:50,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:22:57,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:22:59,283 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2024-11-09 01:22:59,283 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:22:59,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187091723] [2024-11-09 01:22:59,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187091723] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:22:59,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971052833] [2024-11-09 01:22:59,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:22:59,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:22:59,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d91e1d-62ab-4449-a425-b53444178eb7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:22:59,287 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d91e1d-62ab-4449-a425-b53444178eb7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:22:59,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d91e1d-62ab-4449-a425-b53444178eb7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 01:23:07,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:23:07,647 INFO L255 TraceCheckSpWp]: Trace formula consists of 4426 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 01:23:07,663 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:23:08,691 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-09 01:23:08,691 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 01:23:08,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971052833] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:23:08,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 01:23:08,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-09 01:23:08,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289192854] [2024-11-09 01:23:08,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:23:08,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 01:23:08,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:23:08,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 01:23:08,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-09 01:23:08,696 INFO L87 Difference]: Start difference. First operand 274 states and 383 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2024-11-09 01:23:10,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 01:23:13,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 01:23:15,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 01:23:17,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 01:23:19,916 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 01:23:23,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:23:23,814 INFO L93 Difference]: Finished difference Result 519 states and 740 transitions. [2024-11-09 01:23:23,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 01:23:23,815 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 129 [2024-11-09 01:23:23,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:23:23,820 INFO L225 Difference]: With dead ends: 519 [2024-11-09 01:23:23,820 INFO L226 Difference]: Without dead ends: 287 [2024-11-09 01:23:23,823 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-09 01:23:23,824 INFO L432 NwaCegarLoop]: 323 mSDtfsCounter, 28 mSDsluCounter, 1534 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 1857 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2024-11-09 01:23:23,825 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 1857 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 387 Invalid, 5 Unknown, 0 Unchecked, 14.9s Time] [2024-11-09 01:23:23,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2024-11-09 01:23:23,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 285. [2024-11-09 01:23:23,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 153 states have (on average 1.1895424836601307) internal successors, (182), 155 states have internal predecessors, (182), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (120), 106 states have call predecessors, (120), 105 states have call successors, (120) [2024-11-09 01:23:23,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 408 transitions. [2024-11-09 01:23:23,878 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 408 transitions. Word has length 129 [2024-11-09 01:23:23,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:23:23,879 INFO L471 AbstractCegarLoop]: Abstraction has 285 states and 408 transitions. [2024-11-09 01:23:23,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2024-11-09 01:23:23,880 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 408 transitions. [2024-11-09 01:23:23,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-09 01:23:23,884 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:23:23,885 INFO L215 NwaCegarLoop]: trace histogram [9, 7, 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] [2024-11-09 01:23:23,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d91e1d-62ab-4449-a425-b53444178eb7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 01:23:24,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d91e1d-62ab-4449-a425-b53444178eb7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:23:24,090 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:23:24,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:23:24,091 INFO L85 PathProgramCache]: Analyzing trace with hash 256832774, now seen corresponding path program 1 times [2024-11-09 01:23:24,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:23:24,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40516788] [2024-11-09 01:23:24,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:23:24,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:23:30,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:23:32,003 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2024-11-09 01:23:32,003 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:23:32,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40516788] [2024-11-09 01:23:32,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40516788] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:23:32,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757445625] [2024-11-09 01:23:32,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:23:32,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:23:32,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d91e1d-62ab-4449-a425-b53444178eb7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:23:32,007 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d91e1d-62ab-4449-a425-b53444178eb7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:23:32,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d91e1d-62ab-4449-a425-b53444178eb7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 01:23:39,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:23:39,678 INFO L255 TraceCheckSpWp]: Trace formula consists of 4530 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 01:23:39,688 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:23:40,569 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-09 01:23:40,569 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 01:23:40,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757445625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:23:40,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 01:23:40,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-11-09 01:23:40,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152302637] [2024-11-09 01:23:40,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:23:40,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 01:23:40,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:23:40,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 01:23:40,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-09 01:23:40,573 INFO L87 Difference]: Start difference. First operand 285 states and 408 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2024-11-09 01:23:42,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 01:23:45,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 01:23:47,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 01:23:49,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 01:23:52,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:23:52,129 INFO L93 Difference]: Finished difference Result 534 states and 772 transitions. [2024-11-09 01:23:52,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 01:23:52,130 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 138 [2024-11-09 01:23:52,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:23:52,135 INFO L225 Difference]: With dead ends: 534 [2024-11-09 01:23:52,135 INFO L226 Difference]: Without dead ends: 291 [2024-11-09 01:23:52,137 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-09 01:23:52,138 INFO L432 NwaCegarLoop]: 328 mSDtfsCounter, 27 mSDsluCounter, 1238 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1566 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2024-11-09 01:23:52,139 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 1566 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 258 Invalid, 4 Unknown, 0 Unchecked, 11.5s Time] [2024-11-09 01:23:52,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-11-09 01:23:52,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 285. [2024-11-09 01:23:52,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 153 states have (on average 1.1895424836601307) internal successors, (182), 155 states have internal predecessors, (182), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (120), 106 states have call predecessors, (120), 105 states have call successors, (120) [2024-11-09 01:23:52,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 408 transitions. [2024-11-09 01:23:52,173 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 408 transitions. Word has length 138 [2024-11-09 01:23:52,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:23:52,174 INFO L471 AbstractCegarLoop]: Abstraction has 285 states and 408 transitions. [2024-11-09 01:23:52,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2024-11-09 01:23:52,175 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 408 transitions. [2024-11-09 01:23:52,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-09 01:23:52,178 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:23:52,179 INFO L215 NwaCegarLoop]: trace histogram [9, 7, 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] [2024-11-09 01:23:52,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d91e1d-62ab-4449-a425-b53444178eb7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 01:23:52,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d91e1d-62ab-4449-a425-b53444178eb7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:23:52,380 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:23:52,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:23:52,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1865991571, now seen corresponding path program 1 times [2024-11-09 01:23:52,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:23:52,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589452895] [2024-11-09 01:23:52,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:23:52,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:23:57,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:23:59,827 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2024-11-09 01:23:59,827 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:23:59,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589452895] [2024-11-09 01:23:59,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589452895] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:23:59,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558115999] [2024-11-09 01:23:59,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:23:59,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:23:59,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d91e1d-62ab-4449-a425-b53444178eb7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:23:59,830 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d91e1d-62ab-4449-a425-b53444178eb7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:23:59,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d91e1d-62ab-4449-a425-b53444178eb7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 01:24:07,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:24:07,154 INFO L255 TraceCheckSpWp]: Trace formula consists of 4570 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 01:24:07,163 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:24:08,613 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-09 01:24:08,613 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 01:24:08,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558115999] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:24:08,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 01:24:08,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2024-11-09 01:24:08,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41212223] [2024-11-09 01:24:08,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:24:08,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 01:24:08,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:24:08,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 01:24:08,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-09 01:24:08,617 INFO L87 Difference]: Start difference. First operand 285 states and 408 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2024-11-09 01:24:10,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 01:24:12,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 01:24:15,216 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 01:24:17,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 01:24:19,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 01:24:22,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 01:24:27,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:24:27,333 INFO L93 Difference]: Finished difference Result 537 states and 774 transitions. [2024-11-09 01:24:27,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 01:24:27,334 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) Word has length 146 [2024-11-09 01:24:27,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:24:27,339 INFO L225 Difference]: With dead ends: 537 [2024-11-09 01:24:27,339 INFO L226 Difference]: Without dead ends: 294 [2024-11-09 01:24:27,341 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-11-09 01:24:27,342 INFO L432 NwaCegarLoop]: 316 mSDtfsCounter, 37 mSDsluCounter, 1804 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 7 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 2120 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.4s IncrementalHoareTripleChecker+Time [2024-11-09 01:24:27,343 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 2120 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 461 Invalid, 6 Unknown, 0 Unchecked, 18.4s Time] [2024-11-09 01:24:27,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2024-11-09 01:24:27,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 285. [2024-11-09 01:24:27,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 153 states have (on average 1.1895424836601307) internal successors, (182), 155 states have internal predecessors, (182), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (120), 106 states have call predecessors, (120), 105 states have call successors, (120) [2024-11-09 01:24:27,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 408 transitions. [2024-11-09 01:24:27,374 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 408 transitions. Word has length 146 [2024-11-09 01:24:27,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:24:27,375 INFO L471 AbstractCegarLoop]: Abstraction has 285 states and 408 transitions. [2024-11-09 01:24:27,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2024-11-09 01:24:27,376 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 408 transitions. [2024-11-09 01:24:27,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-09 01:24:27,381 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:24:27,381 INFO L215 NwaCegarLoop]: trace histogram [9, 7, 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] [2024-11-09 01:24:27,408 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d91e1d-62ab-4449-a425-b53444178eb7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 01:24:27,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d91e1d-62ab-4449-a425-b53444178eb7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:24:27,582 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:24:27,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:24:27,583 INFO L85 PathProgramCache]: Analyzing trace with hash 134792408, now seen corresponding path program 2 times [2024-11-09 01:24:27,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:24:27,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420139759] [2024-11-09 01:24:27,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:24:27,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:24:33,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:24:35,746 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2024-11-09 01:24:35,746 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:24:35,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420139759] [2024-11-09 01:24:35,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420139759] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:24:35,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:24:35,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 01:24:35,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232462065] [2024-11-09 01:24:35,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:24:35,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 01:24:35,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:24:35,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 01:24:35,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 01:24:35,750 INFO L87 Difference]: Start difference. First operand 285 states and 408 transitions. Second operand has 7 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 4 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) [2024-11-09 01:24:37,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 01:24:40,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 01:24:42,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 01:24:44,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 01:24:46,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 01:24:50,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:24:50,197 INFO L93 Difference]: Finished difference Result 500 states and 725 transitions. [2024-11-09 01:24:50,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 01:24:50,198 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 4 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) Word has length 155 [2024-11-09 01:24:50,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:24:50,204 INFO L225 Difference]: With dead ends: 500 [2024-11-09 01:24:50,204 INFO L226 Difference]: Without dead ends: 287 [2024-11-09 01:24:50,208 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-09 01:24:50,210 INFO L432 NwaCegarLoop]: 326 mSDtfsCounter, 55 mSDsluCounter, 1531 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 25 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1857 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2024-11-09 01:24:50,211 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1857 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 287 Invalid, 5 Unknown, 0 Unchecked, 14.3s Time] [2024-11-09 01:24:50,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2024-11-09 01:24:50,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2024-11-09 01:24:50,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 154 states have (on average 1.1883116883116882) internal successors, (183), 157 states have internal predecessors, (183), 106 states have call successors, (106), 23 states have call predecessors, (106), 26 states have return successors, (122), 106 states have call predecessors, (122), 105 states have call successors, (122) [2024-11-09 01:24:50,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 411 transitions. [2024-11-09 01:24:50,256 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 411 transitions. Word has length 155 [2024-11-09 01:24:50,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:24:50,257 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 411 transitions. [2024-11-09 01:24:50,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 4 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) [2024-11-09 01:24:50,257 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 411 transitions. [2024-11-09 01:24:50,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-09 01:24:50,262 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:24:50,262 INFO L215 NwaCegarLoop]: trace histogram [9, 7, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:24:50,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 01:24:50,262 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:24:50,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:24:50,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1375263829, now seen corresponding path program 1 times [2024-11-09 01:24:50,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:24:50,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208727409] [2024-11-09 01:24:50,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:24:50,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:24:57,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:24:59,457 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2024-11-09 01:24:59,458 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:24:59,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208727409] [2024-11-09 01:24:59,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208727409] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:24:59,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:24:59,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 01:24:59,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207204661] [2024-11-09 01:24:59,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:24:59,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 01:24:59,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:24:59,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 01:24:59,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-09 01:24:59,462 INFO L87 Difference]: Start difference. First operand 287 states and 411 transitions. Second operand has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 5 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (29), 4 states have call predecessors, (29), 5 states have call successors, (29) [2024-11-09 01:25:01,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 01:25:03,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 01:25:06,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 01:25:08,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 01:25:10,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 01:25:12,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 01:25:16,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:25:16,691 INFO L93 Difference]: Finished difference Result 505 states and 732 transitions. [2024-11-09 01:25:16,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 01:25:16,692 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 5 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (29), 4 states have call predecessors, (29), 5 states have call successors, (29) Word has length 172 [2024-11-09 01:25:16,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:25:16,696 INFO L225 Difference]: With dead ends: 505 [2024-11-09 01:25:16,696 INFO L226 Difference]: Without dead ends: 290 [2024-11-09 01:25:16,698 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-09 01:25:16,699 INFO L432 NwaCegarLoop]: 325 mSDtfsCounter, 60 mSDsluCounter, 1830 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 26 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 2155 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.1s IncrementalHoareTripleChecker+Time [2024-11-09 01:25:16,700 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 2155 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 362 Invalid, 6 Unknown, 0 Unchecked, 17.1s Time] [2024-11-09 01:25:16,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2024-11-09 01:25:16,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 288. [2024-11-09 01:25:16,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 155 states have (on average 1.1870967741935483) internal successors, (184), 158 states have internal predecessors, (184), 106 states have call successors, (106), 23 states have call predecessors, (106), 26 states have return successors, (122), 106 states have call predecessors, (122), 105 states have call successors, (122) [2024-11-09 01:25:16,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 412 transitions. [2024-11-09 01:25:16,724 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 412 transitions. Word has length 172 [2024-11-09 01:25:16,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:25:16,725 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 412 transitions. [2024-11-09 01:25:16,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 5 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (29), 4 states have call predecessors, (29), 5 states have call successors, (29) [2024-11-09 01:25:16,725 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 412 transitions. [2024-11-09 01:25:16,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-09 01:25:16,728 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:25:16,729 INFO L215 NwaCegarLoop]: trace histogram [9, 7, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 01:25:16,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 01:25:16,729 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:25:16,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:25:16,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1428961646, now seen corresponding path program 1 times [2024-11-09 01:25:16,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:25:16,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930498902] [2024-11-09 01:25:16,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:25:16,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:25:23,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:25:26,386 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2024-11-09 01:25:26,387 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:25:26,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930498902] [2024-11-09 01:25:26,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930498902] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:25:26,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945690018] [2024-11-09 01:25:26,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:25:26,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:25:26,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d91e1d-62ab-4449-a425-b53444178eb7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:25:26,390 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d91e1d-62ab-4449-a425-b53444178eb7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:25:26,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d91e1d-62ab-4449-a425-b53444178eb7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 01:25:37,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:25:37,802 INFO L255 TraceCheckSpWp]: Trace formula consists of 4868 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 01:25:37,818 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:25:40,825 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2024-11-09 01:25:40,826 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 01:25:40,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945690018] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:25:40,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 01:25:40,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2024-11-09 01:25:40,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962369668] [2024-11-09 01:25:40,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:25:40,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 01:25:40,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:25:40,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 01:25:40,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2024-11-09 01:25:40,830 INFO L87 Difference]: Start difference. First operand 288 states and 412 transitions. Second operand has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 6 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (30), 5 states have call predecessors, (30), 6 states have call successors, (30) [2024-11-09 01:25:42,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 01:25:45,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 01:25:47,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 01:25:49,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 01:25:52,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 01:25:54,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 01:25:56,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 01:25:58,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 01:26:05,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:26:05,308 INFO L93 Difference]: Finished difference Result 504 states and 728 transitions. [2024-11-09 01:26:05,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 01:26:05,309 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 6 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (30), 5 states have call predecessors, (30), 6 states have call successors, (30) Word has length 180 [2024-11-09 01:26:05,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:26:05,313 INFO L225 Difference]: With dead ends: 504 [2024-11-09 01:26:05,313 INFO L226 Difference]: Without dead ends: 288 [2024-11-09 01:26:05,315 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2024-11-09 01:26:05,316 INFO L432 NwaCegarLoop]: 313 mSDtfsCounter, 70 mSDsluCounter, 2366 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 31 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 2679 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.9s IncrementalHoareTripleChecker+Time [2024-11-09 01:26:05,316 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 2679 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 597 Invalid, 8 Unknown, 0 Unchecked, 23.9s Time] [2024-11-09 01:26:05,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-11-09 01:26:05,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 285. [2024-11-09 01:26:05,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 153 states have (on average 1.1895424836601307) internal successors, (182), 155 states have internal predecessors, (182), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (118), 106 states have call predecessors, (118), 105 states have call successors, (118) [2024-11-09 01:26:05,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 406 transitions. [2024-11-09 01:26:05,340 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 406 transitions. Word has length 180 [2024-11-09 01:26:05,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:26:05,341 INFO L471 AbstractCegarLoop]: Abstraction has 285 states and 406 transitions. [2024-11-09 01:26:05,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 6 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (30), 5 states have call predecessors, (30), 6 states have call successors, (30) [2024-11-09 01:26:05,341 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 406 transitions. [2024-11-09 01:26:05,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-11-09 01:26:05,344 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:26:05,345 INFO L215 NwaCegarLoop]: trace histogram [9, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:26:05,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d91e1d-62ab-4449-a425-b53444178eb7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 01:26:05,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d91e1d-62ab-4449-a425-b53444178eb7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-09 01:26:05,546 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:26:05,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:26:05,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1904279227, now seen corresponding path program 2 times [2024-11-09 01:26:05,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:26:05,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396785040] [2024-11-09 01:26:05,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:26:05,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:26:13,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:26:15,715 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2024-11-09 01:26:15,716 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:26:15,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396785040] [2024-11-09 01:26:15,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396785040] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:26:15,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084254580] [2024-11-09 01:26:15,716 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 01:26:15,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:26:15,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d91e1d-62ab-4449-a425-b53444178eb7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:26:15,718 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d91e1d-62ab-4449-a425-b53444178eb7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:26:15,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7d91e1d-62ab-4449-a425-b53444178eb7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process