./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E --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 fafc38909a055846da1b41b1ae706143d92ef6bb742651c374b2236f4f92c5ee --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 23:34:53,491 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 23:34:53,550 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-13 23:34:53,555 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 23:34:53,556 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 23:34:53,579 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 23:34:53,580 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 23:34:53,580 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 23:34:53,580 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 23:34:53,581 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 23:34:53,581 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-13 23:34:53,581 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-13 23:34:53,581 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-13 23:34:53,581 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-13 23:34:53,581 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-13 23:34:53,581 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-13 23:34:53,582 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-13 23:34:53,582 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-13 23:34:53,582 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-13 23:34:53,582 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-13 23:34:53,582 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-13 23:34:53,582 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-13 23:34:53,583 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 23:34:53,583 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 23:34:53,583 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 23:34:53,583 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 23:34:53,583 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 23:34:53,584 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 23:34:53,584 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 23:34:53,584 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 23:34:53,584 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 23:34:53,584 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 23:34:53,584 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 23:34:53,585 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 23:34:53,585 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 23:34:53,585 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 23:34:53,585 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 23:34:53,585 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 23:34:53,585 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 23:34:53,586 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-13 23:34:53,586 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 23:34:53,586 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 23:34:53,586 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-13 23:34:53,586 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 23:34:53,586 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E 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 -> fafc38909a055846da1b41b1ae706143d92ef6bb742651c374b2236f4f92c5ee [2024-11-13 23:34:53,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 23:34:53,860 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 23:34:53,862 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 23:34:53,863 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 23:34:53,863 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 23:34:53,864 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness_negated.i Unable to find full path for "g++" [2024-11-13 23:34:55,699 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 23:34:56,372 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 23:34:56,373 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness_negated.i [2024-11-13 23:34:56,421 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/data/e02e4b3cf/ddef0fab7d6d40d6a21e5e1e89da08bd/FLAG13d2acaf3 [2024-11-13 23:34:56,775 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/data/e02e4b3cf/ddef0fab7d6d40d6a21e5e1e89da08bd [2024-11-13 23:34:56,777 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 23:34:56,778 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 23:34:56,780 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 23:34:56,780 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 23:34:56,785 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 23:34:56,786 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:34:56" (1/1) ... [2024-11-13 23:34:56,787 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e02f2be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:34:56, skipping insertion in model container [2024-11-13 23:34:56,789 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:34:56" (1/1) ... [2024-11-13 23:34:56,924 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 23:34:57,180 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_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness_negated.i[4499,4512] [2024-11-13 23:34:57,187 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_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness_negated.i[4559,4572] [2024-11-13 23:34:58,189 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:58,193 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:58,194 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:58,194 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:58,195 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:58,225 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:58,226 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:58,230 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:58,232 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:58,235 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:58,239 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:58,241 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:58,242 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,028 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,035 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,124 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,125 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,126 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,126 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,126 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,127 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,127 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,128 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,128 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,128 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,129 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,129 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,129 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,133 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,133 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,133 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,134 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,141 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,142 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,156 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,158 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,158 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,172 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,173 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,173 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,179 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 23:34:59,210 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 23:34:59,223 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_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness_negated.i[4499,4512] [2024-11-13 23:34:59,224 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_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness_negated.i[4559,4572] [2024-11-13 23:34:59,285 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,286 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,286 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,287 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,287 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,331 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,332 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,333 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,333 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,334 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,335 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,336 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,336 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,417 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,423 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,431 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7739-7750] [2024-11-13 23:34:59,451 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,451 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,452 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,452 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,452 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,453 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,453 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,453 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,454 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,454 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,454 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,454 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,454 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,455 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,455 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,455 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,456 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,458 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,459 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,468 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,471 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,471 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,482 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,482 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,483 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 23:34:59,488 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 23:34:59,703 INFO L204 MainTranslator]: Completed translation [2024-11-13 23:34:59,703 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:34:59 WrapperNode [2024-11-13 23:34:59,703 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 23:34:59,704 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 23:34:59,704 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 23:34:59,704 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 23:34:59,710 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:34:59" (1/1) ... [2024-11-13 23:34:59,812 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:34:59" (1/1) ... [2024-11-13 23:34:59,900 INFO L138 Inliner]: procedures = 686, calls = 1933, calls flagged for inlining = 59, calls inlined = 15, statements flattened = 1086 [2024-11-13 23:34:59,901 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 23:34:59,902 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 23:34:59,902 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 23:34:59,902 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 23:34:59,909 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:34:59" (1/1) ... [2024-11-13 23:34:59,910 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:34:59" (1/1) ... [2024-11-13 23:34:59,924 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:34:59" (1/1) ... [2024-11-13 23:34:59,928 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:34:59" (1/1) ... [2024-11-13 23:34:59,996 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:34:59" (1/1) ... [2024-11-13 23:35:00,010 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:34:59" (1/1) ... [2024-11-13 23:35:00,026 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:34:59" (1/1) ... [2024-11-13 23:35:00,031 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:34:59" (1/1) ... [2024-11-13 23:35:00,061 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 23:35:00,062 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 23:35:00,062 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 23:35:00,062 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 23:35:00,063 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:34:59" (1/1) ... [2024-11-13 23:35:00,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 23:35:00,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:35:00,105 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-13 23:35:00,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-13 23:35:00,178 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2024-11-13 23:35:00,178 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2024-11-13 23:35:00,178 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2024-11-13 23:35:00,179 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2024-11-13 23:35:00,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 23:35:00,179 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2024-11-13 23:35:00,179 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2024-11-13 23:35:00,179 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2024-11-13 23:35:00,179 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2024-11-13 23:35:00,179 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-13 23:35:00,179 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-13 23:35:00,179 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2024-11-13 23:35:00,179 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2024-11-13 23:35:00,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-13 23:35:00,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-13 23:35:00,181 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-11-13 23:35:00,181 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-11-13 23:35:00,181 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-13 23:35:00,181 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-13 23:35:00,181 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_node [2024-11-13 23:35:00,181 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_node [2024-11-13 23:35:00,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 23:35:00,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 23:35:00,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-13 23:35:00,182 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2024-11-13 23:35:00,182 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2024-11-13 23:35:00,182 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2024-11-13 23:35:00,182 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2024-11-13 23:35:00,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 23:35:00,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 23:35:00,182 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-13 23:35:00,182 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-13 23:35:00,182 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2024-11-13 23:35:00,182 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2024-11-13 23:35:00,182 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2024-11-13 23:35:00,182 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2024-11-13 23:35:00,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-13 23:35:00,183 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2024-11-13 23:35:00,183 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2024-11-13 23:35:00,183 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2024-11-13 23:35:00,183 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2024-11-13 23:35:00,183 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2024-11-13 23:35:00,183 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2024-11-13 23:35:00,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2024-11-13 23:35:00,183 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2024-11-13 23:35:00,183 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-13 23:35:00,183 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-13 23:35:00,183 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2024-11-13 23:35:00,183 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2024-11-13 23:35:00,183 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2024-11-13 23:35:00,183 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2024-11-13 23:35:00,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 23:35:00,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-13 23:35:00,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-13 23:35:00,184 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2024-11-13 23:35:00,184 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2024-11-13 23:35:00,184 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-13 23:35:00,184 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-13 23:35:00,184 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2024-11-13 23:35:00,184 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2024-11-13 23:35:00,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-13 23:35:00,184 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2024-11-13 23:35:00,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2024-11-13 23:35:00,184 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2024-11-13 23:35:00,184 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2024-11-13 23:35:00,184 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-13 23:35:00,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-13 23:35:00,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-13 23:35:00,187 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at [2024-11-13 23:35:00,187 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at [2024-11-13 23:35:00,634 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 23:35:00,637 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 23:35:05,779 INFO L? ?]: Removed 252 outVars from TransFormulas that were not future-live. [2024-11-13 23:35:05,780 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 23:35:06,567 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 23:35:06,568 INFO L316 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-13 23:35:06,568 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:35:06 BoogieIcfgContainer [2024-11-13 23:35:06,568 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 23:35:06,570 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 23:35:06,570 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 23:35:06,580 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 23:35:06,580 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 11:34:56" (1/3) ... [2024-11-13 23:35:06,581 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c9c82b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 11:35:06, skipping insertion in model container [2024-11-13 23:35:06,582 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:34:59" (2/3) ... [2024-11-13 23:35:06,582 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c9c82b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 11:35:06, skipping insertion in model container [2024-11-13 23:35:06,582 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:35:06" (3/3) ... [2024-11-13 23:35:06,584 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_remove_harness_negated.i [2024-11-13 23:35:06,608 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 23:35:06,610 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_priority_queue_remove_harness_negated.i that has 29 procedures, 404 locations, 1 initial locations, 7 loop locations, and 2 error locations. [2024-11-13 23:35:06,696 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 23:35:06,710 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;@1ef441fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 23:35:06,710 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-13 23:35:06,717 INFO L276 IsEmpty]: Start isEmpty. Operand has 404 states, 207 states have (on average 1.21256038647343) internal successors, (251), 212 states have internal predecessors, (251), 166 states have call successors, (166), 28 states have call predecessors, (166), 28 states have return successors, (166), 166 states have call predecessors, (166), 166 states have call successors, (166) [2024-11-13 23:35:06,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-13 23:35:06,735 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:35:06,736 INFO L215 NwaCegarLoop]: trace histogram [9, 6, 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] [2024-11-13 23:35:06,737 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:35:06,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:35:06,743 INFO L85 PathProgramCache]: Analyzing trace with hash 875143939, now seen corresponding path program 1 times [2024-11-13 23:35:06,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:35:06,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763935454] [2024-11-13 23:35:06,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:35:06,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:35:14,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:35:16,256 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2024-11-13 23:35:16,257 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:35:16,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763935454] [2024-11-13 23:35:16,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763935454] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:35:16,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248408107] [2024-11-13 23:35:16,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:35:16,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:35:16,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:35:16,265 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:35:16,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 23:35:24,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:35:24,120 INFO L255 TraceCheckSpWp]: Trace formula consists of 4412 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-13 23:35:24,138 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:35:24,165 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2024-11-13 23:35:24,165 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:35:24,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248408107] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:35:24,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:35:24,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2024-11-13 23:35:24,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393175124] [2024-11-13 23:35:24,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:35:24,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 23:35:24,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:35:24,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 23:35:24,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 23:35:24,194 INFO L87 Difference]: Start difference. First operand has 404 states, 207 states have (on average 1.21256038647343) internal successors, (251), 212 states have internal predecessors, (251), 166 states have call successors, (166), 28 states have call predecessors, (166), 28 states have return successors, (166), 166 states have call predecessors, (166), 166 states have call successors, (166) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-13 23:35:26,287 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 [] [2024-11-13 23:35:27,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:35:27,046 INFO L93 Difference]: Finished difference Result 725 states and 1105 transitions. [2024-11-13 23:35:27,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 23:35:27,048 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 130 [2024-11-13 23:35:27,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:35:27,062 INFO L225 Difference]: With dead ends: 725 [2024-11-13 23:35:27,062 INFO L226 Difference]: Without dead ends: 401 [2024-11-13 23:35:27,072 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 23:35:27,075 INFO L432 NwaCegarLoop]: 534 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-13 23:35:27,076 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 534 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2024-11-13 23:35:27,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2024-11-13 23:35:27,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2024-11-13 23:35:27,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 206 states have (on average 1.1844660194174756) internal successors, (244), 209 states have internal predecessors, (244), 166 states have call successors, (166), 28 states have call predecessors, (166), 27 states have return successors, (164), 164 states have call predecessors, (164), 164 states have call successors, (164) [2024-11-13 23:35:27,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 574 transitions. [2024-11-13 23:35:27,200 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 574 transitions. Word has length 130 [2024-11-13 23:35:27,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:35:27,204 INFO L471 AbstractCegarLoop]: Abstraction has 401 states and 574 transitions. [2024-11-13 23:35:27,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-13 23:35:27,205 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 574 transitions. [2024-11-13 23:35:27,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-13 23:35:27,210 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:35:27,210 INFO L215 NwaCegarLoop]: trace histogram [11, 6, 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] [2024-11-13 23:35:27,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 23:35:27,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-13 23:35:27,411 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:35:27,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:35:27,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1278967868, now seen corresponding path program 1 times [2024-11-13 23:35:27,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:35:27,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76245361] [2024-11-13 23:35:27,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:35:27,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:35:34,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:35:35,573 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-11-13 23:35:35,573 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:35:35,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76245361] [2024-11-13 23:35:35,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76245361] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:35:35,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130891791] [2024-11-13 23:35:35,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:35:35,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:35:35,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:35:35,578 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:35:35,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 23:35:42,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:35:42,384 INFO L255 TraceCheckSpWp]: Trace formula consists of 4486 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 23:35:42,392 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:35:42,910 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-11-13 23:35:42,911 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:35:42,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130891791] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:35:42,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:35:42,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-13 23:35:42,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674330086] [2024-11-13 23:35:42,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:35:42,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 23:35:42,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:35:42,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 23:35:42,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-13 23:35:42,915 INFO L87 Difference]: Start difference. First operand 401 states and 574 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2024-11-13 23:35:44,980 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 [] [2024-11-13 23:35:47,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:35:49,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:35:52,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:35:52,275 INFO L93 Difference]: Finished difference Result 760 states and 1105 transitions. [2024-11-13 23:35:52,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 23:35:52,276 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 142 [2024-11-13 23:35:52,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:35:52,283 INFO L225 Difference]: With dead ends: 760 [2024-11-13 23:35:52,284 INFO L226 Difference]: Without dead ends: 403 [2024-11-13 23:35:52,287 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-13 23:35:52,288 INFO L432 NwaCegarLoop]: 501 mSDtfsCounter, 38 mSDsluCounter, 1412 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1913 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2024-11-13 23:35:52,288 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 1913 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 296 Invalid, 3 Unknown, 0 Unchecked, 9.3s Time] [2024-11-13 23:35:52,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2024-11-13 23:35:52,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2024-11-13 23:35:52,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 207 states have (on average 1.183574879227053) internal successors, (245), 211 states have internal predecessors, (245), 166 states have call successors, (166), 28 states have call predecessors, (166), 28 states have return successors, (177), 164 states have call predecessors, (177), 164 states have call successors, (177) [2024-11-13 23:35:52,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 588 transitions. [2024-11-13 23:35:52,345 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 588 transitions. Word has length 142 [2024-11-13 23:35:52,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:35:52,346 INFO L471 AbstractCegarLoop]: Abstraction has 403 states and 588 transitions. [2024-11-13 23:35:52,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2024-11-13 23:35:52,347 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 588 transitions. [2024-11-13 23:35:52,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-13 23:35:52,350 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:35:52,350 INFO L215 NwaCegarLoop]: trace histogram [11, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:35:52,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 23:35:52,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-13 23:35:52,551 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:35:52,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:35:52,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1876920940, now seen corresponding path program 1 times [2024-11-13 23:35:52,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:35:52,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006500368] [2024-11-13 23:35:52,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:35:52,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:35:58,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:35:59,916 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2024-11-13 23:35:59,916 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:35:59,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006500368] [2024-11-13 23:35:59,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006500368] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:35:59,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416099199] [2024-11-13 23:35:59,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:35:59,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:35:59,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:35:59,921 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:35:59,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 23:36:06,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:36:06,322 INFO L255 TraceCheckSpWp]: Trace formula consists of 4536 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 23:36:06,327 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:36:07,293 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-11-13 23:36:07,294 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:36:07,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416099199] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:36:07,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:36:07,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-13 23:36:07,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284462646] [2024-11-13 23:36:07,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:36:07,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 23:36:07,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:36:07,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 23:36:07,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-13 23:36:07,296 INFO L87 Difference]: Start difference. First operand 403 states and 588 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2024-11-13 23:36:09,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:36:11,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:36:13,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:36:16,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:36:18,524 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 [] [2024-11-13 23:36:23,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:36:23,752 INFO L93 Difference]: Finished difference Result 775 states and 1164 transitions. [2024-11-13 23:36:23,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 23:36:23,752 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) Word has length 150 [2024-11-13 23:36:23,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:36:23,759 INFO L225 Difference]: With dead ends: 775 [2024-11-13 23:36:23,759 INFO L226 Difference]: Without dead ends: 416 [2024-11-13 23:36:23,762 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-13 23:36:23,763 INFO L432 NwaCegarLoop]: 485 mSDtfsCounter, 44 mSDsluCounter, 2297 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 2782 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2024-11-13 23:36:23,764 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 2782 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 579 Invalid, 5 Unknown, 0 Unchecked, 16.3s Time] [2024-11-13 23:36:23,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2024-11-13 23:36:23,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 414. [2024-11-13 23:36:23,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 215 states have (on average 1.186046511627907) internal successors, (255), 219 states have internal predecessors, (255), 168 states have call successors, (168), 28 states have call predecessors, (168), 29 states have return successors, (196), 167 states have call predecessors, (196), 166 states have call successors, (196) [2024-11-13 23:36:23,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 619 transitions. [2024-11-13 23:36:23,801 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 619 transitions. Word has length 150 [2024-11-13 23:36:23,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:36:23,802 INFO L471 AbstractCegarLoop]: Abstraction has 414 states and 619 transitions. [2024-11-13 23:36:23,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2024-11-13 23:36:23,803 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 619 transitions. [2024-11-13 23:36:23,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-13 23:36:23,805 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:36:23,805 INFO L215 NwaCegarLoop]: trace histogram [11, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:36:23,837 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 23:36:24,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-13 23:36:24,006 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:36:24,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:36:24,007 INFO L85 PathProgramCache]: Analyzing trace with hash 927873184, now seen corresponding path program 1 times [2024-11-13 23:36:24,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:36:24,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369847823] [2024-11-13 23:36:24,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:36:24,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:36:29,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:36:30,751 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-11-13 23:36:30,752 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:36:30,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369847823] [2024-11-13 23:36:30,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369847823] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:36:30,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298247295] [2024-11-13 23:36:30,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:36:30,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:36:30,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:36:30,754 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:36:30,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 23:36:37,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:36:37,854 INFO L255 TraceCheckSpWp]: Trace formula consists of 4640 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 23:36:37,860 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:36:38,735 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-11-13 23:36:38,735 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:36:38,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298247295] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:36:38,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:36:38,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-11-13 23:36:38,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119517205] [2024-11-13 23:36:38,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:36:38,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 23:36:38,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:36:38,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 23:36:38,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-13 23:36:38,738 INFO L87 Difference]: Start difference. First operand 414 states and 619 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 4 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2024-11-13 23:36:40,795 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 [] [2024-11-13 23:36:43,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:36:45,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:36:47,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:36:51,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:36:51,477 INFO L93 Difference]: Finished difference Result 790 states and 1211 transitions. [2024-11-13 23:36:51,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 23:36:51,478 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 4 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) Word has length 159 [2024-11-13 23:36:51,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:36:51,483 INFO L225 Difference]: With dead ends: 790 [2024-11-13 23:36:51,484 INFO L226 Difference]: Without dead ends: 420 [2024-11-13 23:36:51,487 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-13 23:36:51,488 INFO L432 NwaCegarLoop]: 500 mSDtfsCounter, 43 mSDsluCounter, 1879 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 2379 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2024-11-13 23:36:51,488 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 2379 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 397 Invalid, 4 Unknown, 0 Unchecked, 12.7s Time] [2024-11-13 23:36:51,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2024-11-13 23:36:51,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 414. [2024-11-13 23:36:51,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 215 states have (on average 1.186046511627907) internal successors, (255), 219 states have internal predecessors, (255), 168 states have call successors, (168), 28 states have call predecessors, (168), 29 states have return successors, (196), 167 states have call predecessors, (196), 166 states have call successors, (196) [2024-11-13 23:36:51,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 619 transitions. [2024-11-13 23:36:51,524 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 619 transitions. Word has length 159 [2024-11-13 23:36:51,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:36:51,525 INFO L471 AbstractCegarLoop]: Abstraction has 414 states and 619 transitions. [2024-11-13 23:36:51,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 4 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2024-11-13 23:36:51,525 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 619 transitions. [2024-11-13 23:36:51,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-13 23:36:51,528 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:36:51,528 INFO L215 NwaCegarLoop]: trace histogram [11, 6, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:36:51,561 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 23:36:51,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-13 23:36:51,729 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:36:51,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:36:51,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1506097068, now seen corresponding path program 1 times [2024-11-13 23:36:51,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:36:51,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082135618] [2024-11-13 23:36:51,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:36:51,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:36:56,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:36:58,674 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2024-11-13 23:36:58,674 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:36:58,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082135618] [2024-11-13 23:36:58,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082135618] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:36:58,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097517643] [2024-11-13 23:36:58,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:36:58,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:36:58,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:36:58,679 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:36:58,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 23:37:05,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:37:05,860 INFO L255 TraceCheckSpWp]: Trace formula consists of 4680 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 23:37:05,868 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:37:07,357 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-11-13 23:37:07,357 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:37:07,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097517643] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:37:07,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:37:07,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2024-11-13 23:37:07,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577708968] [2024-11-13 23:37:07,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:37:07,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 23:37:07,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:37:07,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 23:37:07,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-13 23:37:07,360 INFO L87 Difference]: Start difference. First operand 414 states and 619 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 5 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (32), 5 states have call predecessors, (32), 5 states have call successors, (32) [2024-11-13 23:37:09,438 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 [] [2024-11-13 23:37:11,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:37:14,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:37:16,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:37:18,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:37:20,878 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 [] [2024-11-13 23:37:27,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:37:27,981 INFO L93 Difference]: Finished difference Result 793 states and 1204 transitions. [2024-11-13 23:37:27,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 23:37:27,983 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 5 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (32), 5 states have call predecessors, (32), 5 states have call successors, (32) Word has length 167 [2024-11-13 23:37:27,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:37:27,988 INFO L225 Difference]: With dead ends: 793 [2024-11-13 23:37:27,988 INFO L226 Difference]: Without dead ends: 423 [2024-11-13 23:37:27,991 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-11-13 23:37:27,993 INFO L432 NwaCegarLoop]: 482 mSDtfsCounter, 53 mSDsluCounter, 2741 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 7 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 3223 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.3s IncrementalHoareTripleChecker+Time [2024-11-13 23:37:27,995 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 3223 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 702 Invalid, 6 Unknown, 0 Unchecked, 20.3s Time] [2024-11-13 23:37:27,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2024-11-13 23:37:28,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 414. [2024-11-13 23:37:28,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 215 states have (on average 1.186046511627907) internal successors, (255), 219 states have internal predecessors, (255), 168 states have call successors, (168), 28 states have call predecessors, (168), 29 states have return successors, (196), 167 states have call predecessors, (196), 166 states have call successors, (196) [2024-11-13 23:37:28,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 619 transitions. [2024-11-13 23:37:28,029 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 619 transitions. Word has length 167 [2024-11-13 23:37:28,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:37:28,030 INFO L471 AbstractCegarLoop]: Abstraction has 414 states and 619 transitions. [2024-11-13 23:37:28,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 5 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (32), 5 states have call predecessors, (32), 5 states have call successors, (32) [2024-11-13 23:37:28,030 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 619 transitions. [2024-11-13 23:37:28,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-13 23:37:28,033 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:37:28,033 INFO L215 NwaCegarLoop]: trace histogram [11, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-13 23:37:28,066 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 23:37:28,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:37:28,234 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:37:28,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:37:28,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1391120194, now seen corresponding path program 2 times [2024-11-13 23:37:28,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:37:28,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426119969] [2024-11-13 23:37:28,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:37:28,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:37:33,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:37:34,754 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2024-11-13 23:37:34,754 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:37:34,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426119969] [2024-11-13 23:37:34,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426119969] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:37:34,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:37:34,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 23:37:34,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488154667] [2024-11-13 23:37:34,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:37:34,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 23:37:34,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:37:34,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 23:37:34,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 23:37:34,756 INFO L87 Difference]: Start difference. First operand 414 states and 619 transitions. Second operand has 6 states, 5 states have (on average 12.2) internal successors, (61), 6 states have internal predecessors, (61), 4 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) [2024-11-13 23:37:36,838 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 [] [2024-11-13 23:37:39,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:37:41,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:37:43,691 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 [] [2024-11-13 23:37:47,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:37:47,403 INFO L93 Difference]: Finished difference Result 753 states and 1147 transitions. [2024-11-13 23:37:47,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 23:37:47,404 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 6 states have internal predecessors, (61), 4 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) Word has length 176 [2024-11-13 23:37:47,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:37:47,410 INFO L225 Difference]: With dead ends: 753 [2024-11-13 23:37:47,410 INFO L226 Difference]: Without dead ends: 416 [2024-11-13 23:37:47,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-13 23:37:47,414 INFO L432 NwaCegarLoop]: 502 mSDtfsCounter, 47 mSDsluCounter, 1892 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 21 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 2394 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2024-11-13 23:37:47,414 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 2394 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 362 Invalid, 4 Unknown, 0 Unchecked, 12.5s Time] [2024-11-13 23:37:47,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2024-11-13 23:37:47,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 416. [2024-11-13 23:37:47,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 216 states have (on average 1.1851851851851851) internal successors, (256), 221 states have internal predecessors, (256), 168 states have call successors, (168), 28 states have call predecessors, (168), 30 states have return successors, (207), 167 states have call predecessors, (207), 166 states have call successors, (207) [2024-11-13 23:37:47,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 631 transitions. [2024-11-13 23:37:47,446 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 631 transitions. Word has length 176 [2024-11-13 23:37:47,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:37:47,447 INFO L471 AbstractCegarLoop]: Abstraction has 416 states and 631 transitions. [2024-11-13 23:37:47,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 6 states have internal predecessors, (61), 4 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) [2024-11-13 23:37:47,448 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 631 transitions. [2024-11-13 23:37:47,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-11-13 23:37:47,452 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:37:47,452 INFO L215 NwaCegarLoop]: trace histogram [11, 6, 5, 5, 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, 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] [2024-11-13 23:37:47,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 23:37:47,453 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:37:47,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:37:47,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1619351022, now seen corresponding path program 1 times [2024-11-13 23:37:47,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:37:47,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729475980] [2024-11-13 23:37:47,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:37:47,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:37:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:37:55,069 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2024-11-13 23:37:55,070 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:37:55,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729475980] [2024-11-13 23:37:55,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729475980] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:37:55,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368883721] [2024-11-13 23:37:55,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:37:55,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:37:55,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:37:55,074 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:37:55,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 23:38:03,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:38:03,327 INFO L255 TraceCheckSpWp]: Trace formula consists of 4834 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 23:38:03,335 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:38:04,970 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2024-11-13 23:38:04,971 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:38:04,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368883721] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:38:04,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:38:04,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2024-11-13 23:38:04,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560856598] [2024-11-13 23:38:04,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:38:04,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 23:38:04,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:38:04,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 23:38:04,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-13 23:38:04,973 INFO L87 Difference]: Start difference. First operand 416 states and 631 transitions. Second operand has 8 states, 7 states have (on average 10.0) internal successors, (70), 8 states have internal predecessors, (70), 5 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (33), 4 states have call predecessors, (33), 5 states have call successors, (33) [2024-11-13 23:38:07,040 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 [] [2024-11-13 23:38:09,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:38:11,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:38:14,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:38:16,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:38:18,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:38:26,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:38:26,062 INFO L93 Difference]: Finished difference Result 763 states and 1179 transitions. [2024-11-13 23:38:26,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 23:38:26,063 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.0) internal successors, (70), 8 states have internal predecessors, (70), 5 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (33), 4 states have call predecessors, (33), 5 states have call successors, (33) Word has length 184 [2024-11-13 23:38:26,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:38:26,068 INFO L225 Difference]: With dead ends: 763 [2024-11-13 23:38:26,068 INFO L226 Difference]: Without dead ends: 424 [2024-11-13 23:38:26,071 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-11-13 23:38:26,072 INFO L432 NwaCegarLoop]: 488 mSDtfsCounter, 53 mSDsluCounter, 2774 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 22 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 3262 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.8s IncrementalHoareTripleChecker+Time [2024-11-13 23:38:26,073 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 3262 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 673 Invalid, 6 Unknown, 0 Unchecked, 20.8s Time] [2024-11-13 23:38:26,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2024-11-13 23:38:26,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 422. [2024-11-13 23:38:26,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 221 states have (on average 1.1855203619909502) internal successors, (262), 225 states have internal predecessors, (262), 169 states have call successors, (169), 28 states have call predecessors, (169), 30 states have return successors, (208), 169 states have call predecessors, (208), 167 states have call successors, (208) [2024-11-13 23:38:26,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 639 transitions. [2024-11-13 23:38:26,106 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 639 transitions. Word has length 184 [2024-11-13 23:38:26,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:38:26,107 INFO L471 AbstractCegarLoop]: Abstraction has 422 states and 639 transitions. [2024-11-13 23:38:26,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.0) internal successors, (70), 8 states have internal predecessors, (70), 5 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (33), 4 states have call predecessors, (33), 5 states have call successors, (33) [2024-11-13 23:38:26,107 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 639 transitions. [2024-11-13 23:38:26,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-13 23:38:26,110 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:38:26,110 INFO L215 NwaCegarLoop]: trace histogram [11, 6, 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, 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] [2024-11-13 23:38:26,150 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 23:38:26,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-13 23:38:26,311 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:38:26,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:38:26,311 INFO L85 PathProgramCache]: Analyzing trace with hash -523748060, now seen corresponding path program 2 times [2024-11-13 23:38:26,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:38:26,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278106671] [2024-11-13 23:38:26,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:38:26,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:38:32,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:38:33,772 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2024-11-13 23:38:33,773 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:38:33,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278106671] [2024-11-13 23:38:33,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278106671] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:38:33,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:38:33,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 23:38:33,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977504987] [2024-11-13 23:38:33,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:38:33,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 23:38:33,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:38:33,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 23:38:33,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 23:38:33,775 INFO L87 Difference]: Start difference. First operand 422 states and 639 transitions. Second operand has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 5 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 4 states have call predecessors, (33), 5 states have call successors, (33) [2024-11-13 23:38:35,835 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 [] [2024-11-13 23:38:38,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:38:40,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:38:42,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:38:45,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:38:50,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:38:50,169 INFO L93 Difference]: Finished difference Result 773 states and 1201 transitions. [2024-11-13 23:38:50,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 23:38:50,170 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 5 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 4 states have call predecessors, (33), 5 states have call successors, (33) Word has length 193 [2024-11-13 23:38:50,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:38:50,176 INFO L225 Difference]: With dead ends: 773 [2024-11-13 23:38:50,177 INFO L226 Difference]: Without dead ends: 428 [2024-11-13 23:38:50,180 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-13 23:38:50,180 INFO L432 NwaCegarLoop]: 501 mSDtfsCounter, 52 mSDsluCounter, 2359 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 22 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 2860 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2024-11-13 23:38:50,181 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 2860 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 464 Invalid, 5 Unknown, 0 Unchecked, 16.2s Time] [2024-11-13 23:38:50,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2024-11-13 23:38:50,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 422. [2024-11-13 23:38:50,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 221 states have (on average 1.1855203619909502) internal successors, (262), 225 states have internal predecessors, (262), 169 states have call successors, (169), 28 states have call predecessors, (169), 30 states have return successors, (208), 169 states have call predecessors, (208), 167 states have call successors, (208) [2024-11-13 23:38:50,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 639 transitions. [2024-11-13 23:38:50,221 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 639 transitions. Word has length 193 [2024-11-13 23:38:50,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:38:50,222 INFO L471 AbstractCegarLoop]: Abstraction has 422 states and 639 transitions. [2024-11-13 23:38:50,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 5 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 4 states have call predecessors, (33), 5 states have call successors, (33) [2024-11-13 23:38:50,222 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 639 transitions. [2024-11-13 23:38:50,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-11-13 23:38:50,227 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:38:50,227 INFO L215 NwaCegarLoop]: trace histogram [11, 6, 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, 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] [2024-11-13 23:38:50,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 23:38:50,227 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:38:50,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:38:50,228 INFO L85 PathProgramCache]: Analyzing trace with hash -15207528, now seen corresponding path program 1 times [2024-11-13 23:38:50,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:38:50,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051498319] [2024-11-13 23:38:50,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:38:50,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:38:57,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:38:59,433 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-11-13 23:38:59,433 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:38:59,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051498319] [2024-11-13 23:38:59,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051498319] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:38:59,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799275935] [2024-11-13 23:38:59,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:38:59,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:38:59,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:38:59,438 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:38:59,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 23:39:09,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:39:09,318 INFO L255 TraceCheckSpWp]: Trace formula consists of 4978 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-13 23:39:09,327 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:39:11,622 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2024-11-13 23:39:11,622 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:39:11,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799275935] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:39:11,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:39:11,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 16 [2024-11-13 23:39:11,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063099225] [2024-11-13 23:39:11,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:39:11,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 23:39:11,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:39:11,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 23:39:11,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-11-13 23:39:11,627 INFO L87 Difference]: Start difference. First operand 422 states and 639 transitions. Second operand has 9 states, 8 states have (on average 9.125) internal successors, (73), 9 states have internal predecessors, (73), 6 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (34), 5 states have call predecessors, (34), 6 states have call successors, (34) [2024-11-13 23:39:13,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:39:16,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:39:18,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:39:20,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:39:22,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:39:25,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:39:27,511 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 [] [2024-11-13 23:39:35,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:39:35,337 INFO L93 Difference]: Finished difference Result 768 states and 1174 transitions. [2024-11-13 23:39:35,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 23:39:35,338 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.125) internal successors, (73), 9 states have internal predecessors, (73), 6 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (34), 5 states have call predecessors, (34), 6 states have call successors, (34) Word has length 201 [2024-11-13 23:39:35,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:39:35,342 INFO L225 Difference]: With dead ends: 768 [2024-11-13 23:39:35,342 INFO L226 Difference]: Without dead ends: 423 [2024-11-13 23:39:35,345 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2024-11-13 23:39:35,346 INFO L432 NwaCegarLoop]: 483 mSDtfsCounter, 62 mSDsluCounter, 3205 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 29 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 3688 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.2s IncrementalHoareTripleChecker+Time [2024-11-13 23:39:35,346 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 3688 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 780 Invalid, 7 Unknown, 0 Unchecked, 23.2s Time] [2024-11-13 23:39:35,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2024-11-13 23:39:35,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 414. [2024-11-13 23:39:35,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 215 states have (on average 1.186046511627907) internal successors, (255), 219 states have internal predecessors, (255), 168 states have call successors, (168), 28 states have call predecessors, (168), 29 states have return successors, (194), 167 states have call predecessors, (194), 166 states have call successors, (194) [2024-11-13 23:39:35,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 617 transitions. [2024-11-13 23:39:35,376 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 617 transitions. Word has length 201 [2024-11-13 23:39:35,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:39:35,376 INFO L471 AbstractCegarLoop]: Abstraction has 414 states and 617 transitions. [2024-11-13 23:39:35,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.125) internal successors, (73), 9 states have internal predecessors, (73), 6 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (34), 5 states have call predecessors, (34), 6 states have call successors, (34) [2024-11-13 23:39:35,377 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 617 transitions. [2024-11-13 23:39:35,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2024-11-13 23:39:35,379 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:39:35,380 INFO L215 NwaCegarLoop]: trace histogram [11, 6, 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, 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] [2024-11-13 23:39:35,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-13 23:39:35,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-13 23:39:35,580 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:39:35,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:39:35,581 INFO L85 PathProgramCache]: Analyzing trace with hash 72909116, now seen corresponding path program 2 times [2024-11-13 23:39:35,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:39:35,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394738829] [2024-11-13 23:39:35,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:39:35,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:39:40,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:39:41,787 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2024-11-13 23:39:41,788 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:39:41,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394738829] [2024-11-13 23:39:41,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394738829] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:39:41,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244830176] [2024-11-13 23:39:41,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 23:39:41,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:39:41,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:39:41,790 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:39:41,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 23:40:44,323 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-13 23:40:44,323 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 23:40:44,341 INFO L255 TraceCheckSpWp]: Trace formula consists of 3861 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 23:40:44,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:40:45,158 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2024-11-13 23:40:45,159 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:40:45,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244830176] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:40:45,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:40:45,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2024-11-13 23:40:45,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065216878] [2024-11-13 23:40:45,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:40:45,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 23:40:45,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:40:45,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 23:40:45,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-13 23:40:45,160 INFO L87 Difference]: Start difference. First operand 414 states and 617 transitions. Second operand has 6 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 1 states have call successors, (32) [2024-11-13 23:40:47,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:40:49,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:40:51,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:40:54,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:40:56,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:40:58,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:40:58,751 INFO L93 Difference]: Finished difference Result 422 states and 625 transitions. [2024-11-13 23:40:58,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 23:40:58,752 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 1 states have call successors, (32) Word has length 210 [2024-11-13 23:40:58,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:40:58,756 INFO L225 Difference]: With dead ends: 422 [2024-11-13 23:40:58,757 INFO L226 Difference]: Without dead ends: 420 [2024-11-13 23:40:58,757 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-13 23:40:58,758 INFO L432 NwaCegarLoop]: 530 mSDtfsCounter, 3 mSDsluCounter, 2095 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2625 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2024-11-13 23:40:58,758 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2625 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 239 Invalid, 5 Unknown, 0 Unchecked, 13.4s Time] [2024-11-13 23:40:58,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2024-11-13 23:40:58,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 419. [2024-11-13 23:40:58,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 218 states have (on average 1.18348623853211) internal successors, (258), 222 states have internal predecessors, (258), 169 states have call successors, (169), 29 states have call predecessors, (169), 30 states have return successors, (195), 168 states have call predecessors, (195), 167 states have call successors, (195) [2024-11-13 23:40:58,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 622 transitions. [2024-11-13 23:40:58,785 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 622 transitions. Word has length 210 [2024-11-13 23:40:58,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:40:58,786 INFO L471 AbstractCegarLoop]: Abstraction has 419 states and 622 transitions. [2024-11-13 23:40:58,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 1 states have call successors, (32) [2024-11-13 23:40:58,787 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 622 transitions. [2024-11-13 23:40:58,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-11-13 23:40:58,788 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:40:58,788 INFO L215 NwaCegarLoop]: trace histogram [11, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:40:58,992 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forcibly destroying the process [2024-11-13 23:40:59,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-13 23:40:59,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-13 23:40:59,005 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:40:59,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:40:59,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1571939560, now seen corresponding path program 3 times [2024-11-13 23:40:59,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:40:59,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245569565] [2024-11-13 23:40:59,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:40:59,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:41:03,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:41:05,256 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2024-11-13 23:41:05,256 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:41:05,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245569565] [2024-11-13 23:41:05,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245569565] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:41:05,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918319206] [2024-11-13 23:41:05,257 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 23:41:05,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:41:05,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:41:05,259 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:41:05,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 23:41:12,844 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 23:41:12,844 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 23:41:12,863 INFO L255 TraceCheckSpWp]: Trace formula consists of 5186 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 23:41:12,870 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:41:14,567 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2024-11-13 23:41:14,567 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:41:14,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918319206] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:41:14,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:41:14,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2024-11-13 23:41:14,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592593100] [2024-11-13 23:41:14,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:41:14,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 23:41:14,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:41:14,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 23:41:14,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-13 23:41:14,570 INFO L87 Difference]: Start difference. First operand 419 states and 622 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 5 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (34), 5 states have call predecessors, (34), 5 states have call successors, (34) [2024-11-13 23:41:16,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:41:18,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:41:21,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:41:23,429 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:41:25,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:41:27,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 23:41:33,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:41:33,218 INFO L93 Difference]: Finished difference Result 764 states and 1146 transitions. [2024-11-13 23:41:33,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 23:41:33,218 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 5 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (34), 5 states have call predecessors, (34), 5 states have call successors, (34) Word has length 219 [2024-11-13 23:41:33,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:41:33,222 INFO L225 Difference]: With dead ends: 764 [2024-11-13 23:41:33,223 INFO L226 Difference]: Without dead ends: 429 [2024-11-13 23:41:33,225 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2024-11-13 23:41:33,226 INFO L432 NwaCegarLoop]: 498 mSDtfsCounter, 50 mSDsluCounter, 2862 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 26 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 3360 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.4s IncrementalHoareTripleChecker+Time [2024-11-13 23:41:33,226 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 3360 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 551 Invalid, 6 Unknown, 0 Unchecked, 18.4s Time] [2024-11-13 23:41:33,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2024-11-13 23:41:33,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2024-11-13 23:41:33,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 222 states have (on average 1.1801801801801801) internal successors, (262), 226 states have internal predecessors, (262), 174 states have call successors, (174), 30 states have call predecessors, (174), 31 states have return successors, (200), 173 states have call predecessors, (200), 172 states have call successors, (200) [2024-11-13 23:41:33,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 636 transitions. [2024-11-13 23:41:33,257 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 636 transitions. Word has length 219 [2024-11-13 23:41:33,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:41:33,257 INFO L471 AbstractCegarLoop]: Abstraction has 429 states and 636 transitions. [2024-11-13 23:41:33,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 5 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (34), 5 states have call predecessors, (34), 5 states have call successors, (34) [2024-11-13 23:41:33,258 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 636 transitions. [2024-11-13 23:41:33,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-13 23:41:33,260 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:41:33,260 INFO L215 NwaCegarLoop]: trace histogram [11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:41:33,307 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 23:41:33,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e0c15b7-f848-4646-b52e-5ee6d9d39ea1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-13 23:41:33,461 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:41:33,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:41:33,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1552216102, now seen corresponding path program 1 times [2024-11-13 23:41:33,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:41:33,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60006857] [2024-11-13 23:41:33,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:41:33,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:41:40,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat