./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 839f41a2c3e360479cb51d794d3ab0f4c035e5d91806fe8b36886ee505a3f070 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:51:23,428 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:51:23,549 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-28 02:51:23,555 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:51:23,555 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:51:23,580 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:51:23,580 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:51:23,581 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:51:23,581 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:51:23,581 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:51:23,581 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:51:23,582 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:51:23,582 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:51:23,582 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:51:23,582 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:51:23,583 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:51:23,583 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:51:23,583 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:51:23,583 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:51:23,583 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:51:23,583 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:51:23,583 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:51:23,584 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:51:23,584 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:51:23,584 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:51:23,584 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:51:23,584 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:51:23,584 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:51:23,584 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:51:23,584 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:51:23,585 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:51:23,585 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:51:23,585 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:51:23,585 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:51:23,585 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:51:23,585 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:51:23,585 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:51:23,585 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:51:23,586 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:51:23,586 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:51:23,586 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:51:23,586 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:51:23,586 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:51:23,586 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:51:23,586 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:51:23,586 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB 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 -> Automizer 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 -> 839f41a2c3e360479cb51d794d3ab0f4c035e5d91806fe8b36886ee505a3f070 [2024-11-28 02:51:23,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:51:23,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:51:23,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:51:23,952 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:51:23,953 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:51:23,955 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i [2024-11-28 02:51:27,117 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/data/0894c0655/7cbe29c024dd438d93713920fb8630f1/FLAGa47404991 [2024-11-28 02:51:27,970 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:51:27,971 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i [2024-11-28 02:51:28,040 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/data/0894c0655/7cbe29c024dd438d93713920fb8630f1/FLAGa47404991 [2024-11-28 02:51:28,208 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/data/0894c0655/7cbe29c024dd438d93713920fb8630f1 [2024-11-28 02:51:28,210 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:51:28,212 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:51:28,213 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:51:28,213 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:51:28,220 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:51:28,220 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:51:28" (1/1) ... [2024-11-28 02:51:28,224 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73112b24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:28, skipping insertion in model container [2024-11-28 02:51:28,224 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:51:28" (1/1) ... [2024-11-28 02:51:28,338 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:51:28,696 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_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i[4492,4505] [2024-11-28 02:51:28,704 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_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i[4552,4565] [2024-11-28 02:51:30,094 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:30,095 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:30,095 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:30,096 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:30,097 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:30,116 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:30,117 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:30,119 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:30,120 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:30,122 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:30,124 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:30,125 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:30,125 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:31,674 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:31,676 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:31,713 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:31,714 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:31,722 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:31,723 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:31,739 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:31,740 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:31,740 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:31,741 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:31,741 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:31,741 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:31,742 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:31,797 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_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i[227890,227903] [2024-11-28 02:51:31,800 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:51:31,854 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:51:31,878 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_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i[4492,4505] [2024-11-28 02:51:31,878 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_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i[4552,4565] [2024-11-28 02:51:31,944 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:31,945 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:31,945 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:31,945 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:31,946 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:31,955 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:31,959 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:31,961 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:31,961 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:31,962 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:31,963 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:31,964 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:31,964 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:32,087 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7558-7569] [2024-11-28 02:51:32,233 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:32,234 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:32,243 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:32,244 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:32,248 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:32,248 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:32,264 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:32,265 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:32,266 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:32,268 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:32,269 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:32,269 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:32,269 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:51:32,298 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_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i[227890,227903] [2024-11-28 02:51:32,300 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:51:32,600 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:51:32,601 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:32 WrapperNode [2024-11-28 02:51:32,602 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:51:32,603 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:51:32,603 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:51:32,603 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:51:32,611 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:32" (1/1) ... [2024-11-28 02:51:32,756 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:32" (1/1) ... [2024-11-28 02:51:32,849 INFO L138 Inliner]: procedures = 763, calls = 2447, calls flagged for inlining = 68, calls inlined = 11, statements flattened = 643 [2024-11-28 02:51:32,850 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:51:32,850 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:51:32,850 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:51:32,850 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:51:32,862 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:32" (1/1) ... [2024-11-28 02:51:32,862 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:32" (1/1) ... [2024-11-28 02:51:32,868 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:32" (1/1) ... [2024-11-28 02:51:32,974 INFO L175 MemorySlicer]: Split 329 memory accesses to 9 slices as follows [238, 2, 43, 22, 6, 2, 8, 3, 5]. 72 percent of accesses are in the largest equivalence class. The 22 initializations are split as follows [6, 2, 9, 0, 0, 0, 0, 0, 5]. The 247 writes are split as follows [232, 0, 9, 1, 2, 1, 1, 1, 0]. [2024-11-28 02:51:32,975 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:32" (1/1) ... [2024-11-28 02:51:32,975 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:32" (1/1) ... [2024-11-28 02:51:33,049 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:32" (1/1) ... [2024-11-28 02:51:33,051 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:32" (1/1) ... [2024-11-28 02:51:33,059 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:32" (1/1) ... [2024-11-28 02:51:33,074 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:32" (1/1) ... [2024-11-28 02:51:33,088 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:32" (1/1) ... [2024-11-28 02:51:33,111 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:51:33,112 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:51:33,113 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:51:33,113 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:51:33,115 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:32" (1/1) ... [2024-11-28 02:51:33,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:51:33,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:51:33,165 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:51:33,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:51:33,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-11-28 02:51:33,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-11-28 02:51:33,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-11-28 02:51:33,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-11-28 02:51:33,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2024-11-28 02:51:33,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2024-11-28 02:51:33,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2024-11-28 02:51:33,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2024-11-28 02:51:33,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2024-11-28 02:51:33,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 02:51:33,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-28 02:51:33,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-28 02:51:33,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-28 02:51:33,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-28 02:51:33,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-28 02:51:33,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-28 02:51:33,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-11-28 02:51:33,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2024-11-28 02:51:33,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2024-11-28 02:51:33,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 02:51:33,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 02:51:33,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 02:51:33,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 02:51:33,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-28 02:51:33,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-28 02:51:33,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-28 02:51:33,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-28 02:51:33,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-28 02:51:33,214 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-11-28 02:51:33,214 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-11-28 02:51:33,214 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 02:51:33,214 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 02:51:33,214 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2024-11-28 02:51:33,214 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2024-11-28 02:51:33,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 02:51:33,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:51:33,214 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_next [2024-11-28 02:51:33,214 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_next [2024-11-28 02:51:33,214 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2024-11-28 02:51:33,215 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2024-11-28 02:51:33,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 02:51:33,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 02:51:33,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-28 02:51:33,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-28 02:51:33,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-28 02:51:33,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-28 02:51:33,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-28 02:51:33,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-28 02:51:33,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-11-28 02:51:33,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:51:33,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:51:33,219 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-28 02:51:33,219 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-28 02:51:33,219 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2024-11-28 02:51:33,219 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2024-11-28 02:51:33,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-28 02:51:33,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-28 02:51:33,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-28 02:51:33,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-28 02:51:33,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-28 02:51:33,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-28 02:51:33,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-11-28 02:51:33,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2024-11-28 02:51:33,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#8 [2024-11-28 02:51:33,220 INFO L130 BoogieDeclarations]: Found specification of procedure s_get_next_element [2024-11-28 02:51:33,220 INFO L138 BoogieDeclarations]: Found implementation of procedure s_get_next_element [2024-11-28 02:51:33,220 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 02:51:33,220 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 02:51:33,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 02:51:33,220 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_is_valid [2024-11-28 02:51:33,221 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_is_valid [2024-11-28 02:51:33,221 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2024-11-28 02:51:33,221 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2024-11-28 02:51:33,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 02:51:33,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 02:51:33,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 02:51:33,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-28 02:51:33,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-28 02:51:33,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-28 02:51:33,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-28 02:51:33,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-28 02:51:33,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-28 02:51:33,221 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2024-11-28 02:51:33,221 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2024-11-28 02:51:33,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 02:51:33,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-28 02:51:33,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-28 02:51:33,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-28 02:51:33,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-28 02:51:33,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-28 02:51:33,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-28 02:51:33,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-28 02:51:33,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2024-11-28 02:51:33,223 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2024-11-28 02:51:33,223 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2024-11-28 02:51:33,223 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2024-11-28 02:51:33,223 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2024-11-28 02:51:33,223 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-28 02:51:33,224 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-28 02:51:33,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 02:51:33,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 02:51:33,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 02:51:33,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 02:51:33,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-28 02:51:33,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-28 02:51:33,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-28 02:51:33,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-28 02:51:33,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-28 02:51:33,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:51:33,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:51:33,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 02:51:33,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 02:51:33,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 02:51:33,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-28 02:51:33,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-28 02:51:33,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-28 02:51:33,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-28 02:51:33,226 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2024-11-28 02:51:33,226 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2024-11-28 02:51:33,661 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:51:33,663 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:51:40,494 INFO L? ?]: Removed 161 outVars from TransFormulas that were not future-live. [2024-11-28 02:51:40,495 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:51:40,515 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:51:40,515 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 02:51:40,515 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:51:40 BoogieIcfgContainer [2024-11-28 02:51:40,515 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:51:40,521 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:51:40,522 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:51:40,527 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:51:40,529 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:51:28" (1/3) ... [2024-11-28 02:51:40,530 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32a64596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:51:40, skipping insertion in model container [2024-11-28 02:51:40,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:51:32" (2/3) ... [2024-11-28 02:51:40,530 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32a64596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:51:40, skipping insertion in model container [2024-11-28 02:51:40,531 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:51:40" (3/3) ... [2024-11-28 02:51:40,532 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_hash_iter_next_harness.i [2024-11-28 02:51:40,553 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:51:40,555 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_hash_iter_next_harness.i that has 17 procedures, 173 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 02:51:40,641 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:51:40,656 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=PETRI_NET, 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;@722ceafa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:51:40,657 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:51:40,664 INFO L276 IsEmpty]: Start isEmpty. Operand has 173 states, 112 states have (on average 1.2589285714285714) internal successors, (141), 113 states have internal predecessors, (141), 43 states have call successors, (43), 16 states have call predecessors, (43), 16 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-28 02:51:40,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-28 02:51:40,683 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:51:40,684 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 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] [2024-11-28 02:51:40,685 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:51:40,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:51:40,690 INFO L85 PathProgramCache]: Analyzing trace with hash -150243314, now seen corresponding path program 1 times [2024-11-28 02:51:40,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:51:40,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673358736] [2024-11-28 02:51:40,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:51:40,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:51:48,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:51:49,807 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-11-28 02:51:49,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:51:49,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673358736] [2024-11-28 02:51:49,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673358736] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:51:49,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65884953] [2024-11-28 02:51:49,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:51:49,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:51:49,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:51:49,815 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:51:49,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:51:58,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:51:58,450 INFO L256 TraceCheckSpWp]: Trace formula consists of 4566 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 02:51:58,463 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:51:58,500 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-11-28 02:51:58,501 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:51:58,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65884953] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:51:58,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:51:58,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 02:51:58,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467426319] [2024-11-28 02:51:58,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:51:58,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:51:58,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:51:58,536 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:51:58,536 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:51:58,540 INFO L87 Difference]: Start difference. First operand has 173 states, 112 states have (on average 1.2589285714285714) internal successors, (141), 113 states have internal predecessors, (141), 43 states have call successors, (43), 16 states have call predecessors, (43), 16 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-28 02:51:58,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:51:58,597 INFO L93 Difference]: Finished difference Result 338 states and 479 transitions. [2024-11-28 02:51:58,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:51:58,600 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 156 [2024-11-28 02:51:58,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:51:58,610 INFO L225 Difference]: With dead ends: 338 [2024-11-28 02:51:58,610 INFO L226 Difference]: Without dead ends: 167 [2024-11-28 02:51:58,615 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:51:58,618 INFO L435 NwaCegarLoop]: 223 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:51:58,619 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:51:58,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-28 02:51:58,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2024-11-28 02:51:58,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 107 states have (on average 1.233644859813084) internal successors, (132), 108 states have internal predecessors, (132), 43 states have call successors, (43), 16 states have call predecessors, (43), 16 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-28 02:51:58,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 217 transitions. [2024-11-28 02:51:58,676 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 217 transitions. Word has length 156 [2024-11-28 02:51:58,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:51:58,677 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 217 transitions. [2024-11-28 02:51:58,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-28 02:51:58,677 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 217 transitions. [2024-11-28 02:51:58,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-28 02:51:58,682 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:51:58,682 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 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] [2024-11-28 02:51:58,702 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:51:58,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 02:51:58,883 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:51:58,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:51:58,884 INFO L85 PathProgramCache]: Analyzing trace with hash -213742062, now seen corresponding path program 1 times [2024-11-28 02:51:58,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:51:58,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620819243] [2024-11-28 02:51:58,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:51:58,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:52:04,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:52:06,029 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2024-11-28 02:52:06,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:52:06,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620819243] [2024-11-28 02:52:06,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620819243] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:52:06,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54377355] [2024-11-28 02:52:06,030 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:52:06,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:52:06,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:52:06,036 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:52:06,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:52:13,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:52:13,097 INFO L256 TraceCheckSpWp]: Trace formula consists of 4566 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 02:52:13,109 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:52:14,592 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-28 02:52:14,596 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:52:14,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54377355] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:52:14,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:52:14,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-28 02:52:14,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482077377] [2024-11-28 02:52:14,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:52:14,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:52:14,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:52:14,599 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:52:14,599 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:52:14,599 INFO L87 Difference]: Start difference. First operand 167 states and 217 transitions. Second operand has 6 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (24), 2 states have call predecessors, (24), 3 states have call successors, (24) [2024-11-28 02:52:16,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:52:16,033 INFO L93 Difference]: Finished difference Result 313 states and 412 transitions. [2024-11-28 02:52:16,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:52:16,034 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (24), 2 states have call predecessors, (24), 3 states have call successors, (24) Word has length 156 [2024-11-28 02:52:16,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:52:16,039 INFO L225 Difference]: With dead ends: 313 [2024-11-28 02:52:16,039 INFO L226 Difference]: Without dead ends: 173 [2024-11-28 02:52:16,041 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:52:16,042 INFO L435 NwaCegarLoop]: 184 mSDtfsCounter, 181 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:52:16,043 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 699 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 02:52:16,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-28 02:52:16,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 169. [2024-11-28 02:52:16,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 108 states have (on average 1.2314814814814814) internal successors, (133), 110 states have internal predecessors, (133), 43 states have call successors, (43), 16 states have call predecessors, (43), 17 states have return successors, (45), 42 states have call predecessors, (45), 42 states have call successors, (45) [2024-11-28 02:52:16,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 221 transitions. [2024-11-28 02:52:16,076 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 221 transitions. Word has length 156 [2024-11-28 02:52:16,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:52:16,077 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 221 transitions. [2024-11-28 02:52:16,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (24), 2 states have call predecessors, (24), 3 states have call successors, (24) [2024-11-28 02:52:16,078 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 221 transitions. [2024-11-28 02:52:16,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-28 02:52:16,081 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:52:16,081 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 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] [2024-11-28 02:52:16,099 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 02:52:16,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:52:16,282 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:52:16,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:52:16,283 INFO L85 PathProgramCache]: Analyzing trace with hash -358435602, now seen corresponding path program 1 times [2024-11-28 02:52:16,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:52:16,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955266128] [2024-11-28 02:52:16,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:52:16,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:52:22,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:52:23,365 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2024-11-28 02:52:23,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:52:23,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955266128] [2024-11-28 02:52:23,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955266128] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:52:23,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390319935] [2024-11-28 02:52:23,365 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:52:23,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:52:23,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:52:23,370 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:52:23,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:52:29,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:52:29,392 INFO L256 TraceCheckSpWp]: Trace formula consists of 4571 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 02:52:29,398 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:52:31,059 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 102 proven. 55 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-28 02:52:31,059 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:52:33,403 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2024-11-28 02:52:33,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390319935] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:52:33,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:52:33,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 16 [2024-11-28 02:52:33,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304522348] [2024-11-28 02:52:33,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:52:33,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 02:52:33,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:52:33,406 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 02:52:33,407 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2024-11-28 02:52:33,408 INFO L87 Difference]: Start difference. First operand 169 states and 221 transitions. Second operand has 16 states, 14 states have (on average 10.071428571428571) internal successors, (141), 14 states have internal predecessors, (141), 8 states have call successors, (63), 5 states have call predecessors, (63), 5 states have return successors, (59), 7 states have call predecessors, (59), 8 states have call successors, (59) [2024-11-28 02:52:37,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:52:37,644 INFO L93 Difference]: Finished difference Result 335 states and 443 transitions. [2024-11-28 02:52:37,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 02:52:37,645 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 10.071428571428571) internal successors, (141), 14 states have internal predecessors, (141), 8 states have call successors, (63), 5 states have call predecessors, (63), 5 states have return successors, (59), 7 states have call predecessors, (59), 8 states have call successors, (59) Word has length 157 [2024-11-28 02:52:37,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:52:37,648 INFO L225 Difference]: With dead ends: 335 [2024-11-28 02:52:37,649 INFO L226 Difference]: Without dead ends: 178 [2024-11-28 02:52:37,650 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 303 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2024-11-28 02:52:37,651 INFO L435 NwaCegarLoop]: 173 mSDtfsCounter, 310 mSDsluCounter, 1664 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 1837 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:52:37,651 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 1837 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-28 02:52:37,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-11-28 02:52:37,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 174. [2024-11-28 02:52:37,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 112 states have (on average 1.2232142857142858) internal successors, (137), 114 states have internal predecessors, (137), 43 states have call successors, (43), 16 states have call predecessors, (43), 18 states have return successors, (44), 43 states have call predecessors, (44), 42 states have call successors, (44) [2024-11-28 02:52:37,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 224 transitions. [2024-11-28 02:52:37,672 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 224 transitions. Word has length 157 [2024-11-28 02:52:37,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:52:37,672 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 224 transitions. [2024-11-28 02:52:37,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 10.071428571428571) internal successors, (141), 14 states have internal predecessors, (141), 8 states have call successors, (63), 5 states have call predecessors, (63), 5 states have return successors, (59), 7 states have call predecessors, (59), 8 states have call successors, (59) [2024-11-28 02:52:37,673 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 224 transitions. [2024-11-28 02:52:37,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-28 02:52:37,676 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:52:37,676 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:52:37,697 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:52:37,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:52:37,877 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:52:37,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:52:37,877 INFO L85 PathProgramCache]: Analyzing trace with hash -47352484, now seen corresponding path program 1 times [2024-11-28 02:52:37,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:52:37,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631678409] [2024-11-28 02:52:37,877 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:52:37,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:52:42,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:52:46,993 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2024-11-28 02:52:46,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:52:46,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631678409] [2024-11-28 02:52:46,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631678409] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:52:46,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621149679] [2024-11-28 02:52:46,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:52:46,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:52:46,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:52:46,998 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:52:47,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:52:53,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:52:53,118 INFO L256 TraceCheckSpWp]: Trace formula consists of 4584 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 02:52:53,124 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:52:55,644 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 6 proven. 128 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-11-28 02:52:55,644 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:52:59,004 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2024-11-28 02:52:59,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621149679] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 02:52:59,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:52:59,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10, 10] total 25 [2024-11-28 02:52:59,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31267545] [2024-11-28 02:52:59,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:52:59,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:52:59,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:52:59,006 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:52:59,006 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=542, Unknown=0, NotChecked=0, Total=600 [2024-11-28 02:52:59,007 INFO L87 Difference]: Start difference. First operand 174 states and 224 transitions. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 8 states have internal predecessors, (64), 6 states have call successors, (26), 4 states have call predecessors, (26), 2 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) [2024-11-28 02:53:02,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:53:02,612 INFO L93 Difference]: Finished difference Result 254 states and 332 transitions. [2024-11-28 02:53:02,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:53:02,612 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 8 states have internal predecessors, (64), 6 states have call successors, (26), 4 states have call predecessors, (26), 2 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) Word has length 170 [2024-11-28 02:53:02,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:53:02,615 INFO L225 Difference]: With dead ends: 254 [2024-11-28 02:53:02,615 INFO L226 Difference]: Without dead ends: 178 [2024-11-28 02:53:02,617 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 326 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=92, Invalid=900, Unknown=0, NotChecked=0, Total=992 [2024-11-28 02:53:02,617 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 235 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:53:02,618 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 1129 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-28 02:53:02,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-11-28 02:53:02,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 172. [2024-11-28 02:53:02,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 111 states have (on average 1.2162162162162162) internal successors, (135), 112 states have internal predecessors, (135), 43 states have call successors, (43), 16 states have call predecessors, (43), 17 states have return successors, (43), 43 states have call predecessors, (43), 42 states have call successors, (43) [2024-11-28 02:53:02,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 221 transitions. [2024-11-28 02:53:02,639 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 221 transitions. Word has length 170 [2024-11-28 02:53:02,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:53:02,640 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 221 transitions. [2024-11-28 02:53:02,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 8 states have internal predecessors, (64), 6 states have call successors, (26), 4 states have call predecessors, (26), 2 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) [2024-11-28 02:53:02,641 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 221 transitions. [2024-11-28 02:53:02,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-28 02:53:02,643 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:53:02,643 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2024-11-28 02:53:02,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 02:53:02,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:53:02,844 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:53:02,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:02,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1654169612, now seen corresponding path program 1 times [2024-11-28 02:53:02,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:02,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064088286] [2024-11-28 02:53:02,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:53:02,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:07,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:53:11,833 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2024-11-28 02:53:11,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:11,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064088286] [2024-11-28 02:53:11,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064088286] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:53:11,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435721543] [2024-11-28 02:53:11,833 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:53:11,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:53:11,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:53:11,835 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:53:11,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:53:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:53:18,174 INFO L256 TraceCheckSpWp]: Trace formula consists of 4578 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-28 02:53:18,181 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:53:21,260 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 9 proven. 131 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-28 02:53:21,261 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:53:23,244 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2024-11-28 02:53:23,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435721543] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 02:53:23,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:53:23,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10, 12] total 22 [2024-11-28 02:53:23,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787229423] [2024-11-28 02:53:23,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:53:23,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:53:23,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:23,246 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:53:23,247 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=416, Unknown=0, NotChecked=0, Total=462 [2024-11-28 02:53:23,247 INFO L87 Difference]: Start difference. First operand 172 states and 221 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-28 02:53:23,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:53:23,580 INFO L93 Difference]: Finished difference Result 180 states and 229 transitions. [2024-11-28 02:53:23,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:53:23,581 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 170 [2024-11-28 02:53:23,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:53:23,584 INFO L225 Difference]: With dead ends: 180 [2024-11-28 02:53:23,584 INFO L226 Difference]: Without dead ends: 178 [2024-11-28 02:53:23,584 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=50, Invalid=456, Unknown=0, NotChecked=0, Total=506 [2024-11-28 02:53:23,585 INFO L435 NwaCegarLoop]: 213 mSDtfsCounter, 3 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:53:23,586 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 841 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:53:23,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-11-28 02:53:23,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 177. [2024-11-28 02:53:23,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 114 states have (on average 1.2105263157894737) internal successors, (138), 116 states have internal predecessors, (138), 44 states have call successors, (44), 17 states have call predecessors, (44), 18 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2024-11-28 02:53:23,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 226 transitions. [2024-11-28 02:53:23,607 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 226 transitions. Word has length 170 [2024-11-28 02:53:23,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:53:23,608 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 226 transitions. [2024-11-28 02:53:23,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-28 02:53:23,609 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 226 transitions. [2024-11-28 02:53:23,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-28 02:53:23,610 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:53:23,611 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2024-11-28 02:53:23,632 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 02:53:23,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:53:23,811 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:53:23,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:23,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1656016654, now seen corresponding path program 1 times [2024-11-28 02:53:23,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:23,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227408143] [2024-11-28 02:53:23,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:53:23,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:28,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:53:31,840 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2024-11-28 02:53:31,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:31,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227408143] [2024-11-28 02:53:31,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227408143] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:53:31,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709470005] [2024-11-28 02:53:31,841 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:53:31,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:53:31,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:53:31,846 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:53:31,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:53:39,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:53:39,119 INFO L256 TraceCheckSpWp]: Trace formula consists of 4581 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 02:53:39,126 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:53:39,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 02:53:40,808 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-28 02:53:40,808 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:53:40,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709470005] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:53:40,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:53:40,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2024-11-28 02:53:40,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079346373] [2024-11-28 02:53:40,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:53:40,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 02:53:40,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:40,810 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 02:53:40,810 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:53:40,811 INFO L87 Difference]: Start difference. First operand 177 states and 226 transitions. Second operand has 9 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2024-11-28 02:53:44,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:53:49,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:53:53,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:53:57,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:54:04,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:54:08,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:54:09,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:54:09,199 INFO L93 Difference]: Finished difference Result 417 states and 523 transitions. [2024-11-28 02:54:09,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:54:09,200 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) Word has length 170 [2024-11-28 02:54:09,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:54:09,202 INFO L225 Difference]: With dead ends: 417 [2024-11-28 02:54:09,202 INFO L226 Difference]: Without dead ends: 267 [2024-11-28 02:54:09,203 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2024-11-28 02:54:09,204 INFO L435 NwaCegarLoop]: 239 mSDtfsCounter, 333 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 100 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:54:09,204 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 1153 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 360 Invalid, 6 Unknown, 0 Unchecked, 27.5s Time] [2024-11-28 02:54:09,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2024-11-28 02:54:09,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 263. [2024-11-28 02:54:09,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 178 states have (on average 1.2303370786516854) internal successors, (219), 181 states have internal predecessors, (219), 53 states have call successors, (53), 28 states have call predecessors, (53), 31 states have return successors, (55), 53 states have call predecessors, (55), 52 states have call successors, (55) [2024-11-28 02:54:09,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 327 transitions. [2024-11-28 02:54:09,231 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 327 transitions. Word has length 170 [2024-11-28 02:54:09,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:54:09,232 INFO L471 AbstractCegarLoop]: Abstraction has 263 states and 327 transitions. [2024-11-28 02:54:09,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2024-11-28 02:54:09,232 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 327 transitions. [2024-11-28 02:54:09,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-28 02:54:09,234 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:54:09,234 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:54:09,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 02:54:09,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:54:09,438 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:54:09,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:09,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1118247193, now seen corresponding path program 1 times [2024-11-28 02:54:09,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:09,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941224304] [2024-11-28 02:54:09,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:09,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:14,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:16,996 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2024-11-28 02:54:16,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:16,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941224304] [2024-11-28 02:54:16,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941224304] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:54:16,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025285327] [2024-11-28 02:54:16,996 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:16,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:54:16,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:54:16,999 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:54:17,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:54:24,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:24,076 INFO L256 TraceCheckSpWp]: Trace formula consists of 4608 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-28 02:54:24,083 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:54:24,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 02:54:28,336 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-28 02:54:28,336 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:54:28,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025285327] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:54:28,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:54:28,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2024-11-28 02:54:28,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896314800] [2024-11-28 02:54:28,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:54:28,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:54:28,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:28,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:54:28,338 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2024-11-28 02:54:28,338 INFO L87 Difference]: Start difference. First operand 263 states and 327 transitions. Second operand has 11 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 6 states have call successors, (29), 4 states have call predecessors, (29), 4 states have return successors, (27), 5 states have call predecessors, (27), 6 states have call successors, (27) [2024-11-28 02:54:32,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:54:36,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:54:40,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:54:44,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:54:52,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:54:57,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:54:57,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:54:57,556 INFO L93 Difference]: Finished difference Result 386 states and 485 transitions. [2024-11-28 02:54:57,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 02:54:57,557 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 6 states have call successors, (29), 4 states have call predecessors, (29), 4 states have return successors, (27), 5 states have call predecessors, (27), 6 states have call successors, (27) Word has length 179 [2024-11-28 02:54:57,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:54:57,561 INFO L225 Difference]: With dead ends: 386 [2024-11-28 02:54:57,561 INFO L226 Difference]: Without dead ends: 265 [2024-11-28 02:54:57,563 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 164 SyntacticMatches, 8 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=96, Invalid=606, Unknown=0, NotChecked=0, Total=702 [2024-11-28 02:54:57,564 INFO L435 NwaCegarLoop]: 236 mSDtfsCounter, 305 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 87 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:54:57,564 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 1175 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 470 Invalid, 6 Unknown, 0 Unchecked, 28.0s Time] [2024-11-28 02:54:57,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2024-11-28 02:54:57,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 261. [2024-11-28 02:54:57,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 177 states have (on average 1.2259887005649717) internal successors, (217), 179 states have internal predecessors, (217), 53 states have call successors, (53), 28 states have call predecessors, (53), 30 states have return successors, (54), 53 states have call predecessors, (54), 52 states have call successors, (54) [2024-11-28 02:54:57,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 324 transitions. [2024-11-28 02:54:57,598 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 324 transitions. Word has length 179 [2024-11-28 02:54:57,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:54:57,599 INFO L471 AbstractCegarLoop]: Abstraction has 261 states and 324 transitions. [2024-11-28 02:54:57,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 6 states have call successors, (29), 4 states have call predecessors, (29), 4 states have return successors, (27), 5 states have call predecessors, (27), 6 states have call successors, (27) [2024-11-28 02:54:57,599 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 324 transitions. [2024-11-28 02:54:57,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-28 02:54:57,602 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:54:57,602 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:54:57,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 02:54:57,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:54:57,803 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:54:57,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:57,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1555383496, now seen corresponding path program 1 times [2024-11-28 02:54:57,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:57,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080820317] [2024-11-28 02:54:57,804 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:57,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:55:02,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:55:06,329 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-11-28 02:55:06,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:55:06,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080820317] [2024-11-28 02:55:06,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080820317] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:55:06,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029773141] [2024-11-28 02:55:06,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:55:06,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:55:06,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:55:06,332 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:55:06,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 02:55:14,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:55:14,382 INFO L256 TraceCheckSpWp]: Trace formula consists of 4635 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 02:55:14,388 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:55:14,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 02:55:15,943 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-28 02:55:15,943 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:55:15,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029773141] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:55:15,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:55:15,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 15 [2024-11-28 02:55:15,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287046145] [2024-11-28 02:55:15,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:55:15,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:55:15,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:55:15,944 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:55:15,945 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:55:15,945 INFO L87 Difference]: Start difference. First operand 261 states and 324 transitions. Second operand has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 9 states have internal predecessors, (89), 4 states have call successors, (29), 3 states have call predecessors, (29), 4 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2024-11-28 02:55:20,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:55:20,440 INFO L93 Difference]: Finished difference Result 487 states and 610 transitions. [2024-11-28 02:55:20,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 02:55:20,440 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 9 states have internal predecessors, (89), 4 states have call successors, (29), 3 states have call predecessors, (29), 4 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 188 [2024-11-28 02:55:20,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:55:20,443 INFO L225 Difference]: With dead ends: 487 [2024-11-28 02:55:20,443 INFO L226 Difference]: Without dead ends: 290 [2024-11-28 02:55:20,445 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2024-11-28 02:55:20,445 INFO L435 NwaCegarLoop]: 241 mSDtfsCounter, 201 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 1313 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:55:20,446 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 1313 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-28 02:55:20,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2024-11-28 02:55:20,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 279. [2024-11-28 02:55:20,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 192 states have (on average 1.2239583333333333) internal successors, (235), 195 states have internal predecessors, (235), 53 states have call successors, (53), 30 states have call predecessors, (53), 33 states have return successors, (55), 53 states have call predecessors, (55), 52 states have call successors, (55) [2024-11-28 02:55:20,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 343 transitions. [2024-11-28 02:55:20,487 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 343 transitions. Word has length 188 [2024-11-28 02:55:20,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:55:20,487 INFO L471 AbstractCegarLoop]: Abstraction has 279 states and 343 transitions. [2024-11-28 02:55:20,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 9 states have internal predecessors, (89), 4 states have call successors, (29), 3 states have call predecessors, (29), 4 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2024-11-28 02:55:20,488 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 343 transitions. [2024-11-28 02:55:20,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-28 02:55:20,494 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:55:20,494 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:55:20,527 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 02:55:20,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:55:20,695 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:55:20,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:55:20,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1067336390, now seen corresponding path program 1 times [2024-11-28 02:55:20,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:55:20,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148744392] [2024-11-28 02:55:20,696 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:55:20,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:55:25,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:55:26,292 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-11-28 02:55:26,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:55:26,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148744392] [2024-11-28 02:55:26,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148744392] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:55:26,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187094267] [2024-11-28 02:55:26,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:55:26,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:55:26,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:55:26,295 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:55:26,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 02:55:33,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:55:33,589 INFO L256 TraceCheckSpWp]: Trace formula consists of 4630 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 02:55:33,594 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:55:34,270 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-28 02:55:34,270 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:55:34,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187094267] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:55:34,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:55:34,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-28 02:55:34,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038573239] [2024-11-28 02:55:34,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:55:34,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:55:34,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:55:34,272 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:55:34,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:55:34,272 INFO L87 Difference]: Start difference. First operand 279 states and 343 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2024-11-28 02:55:35,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:55:35,317 INFO L93 Difference]: Finished difference Result 493 states and 616 transitions. [2024-11-28 02:55:35,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:55:35,319 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 188 [2024-11-28 02:55:35,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:55:35,322 INFO L225 Difference]: With dead ends: 493 [2024-11-28 02:55:35,322 INFO L226 Difference]: Without dead ends: 291 [2024-11-28 02:55:35,323 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:55:35,324 INFO L435 NwaCegarLoop]: 193 mSDtfsCounter, 215 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:55:35,324 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 546 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 02:55:35,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-11-28 02:55:35,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 281. [2024-11-28 02:55:35,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 193 states have (on average 1.2227979274611398) internal successors, (236), 196 states have internal predecessors, (236), 54 states have call successors, (54), 30 states have call predecessors, (54), 33 states have return successors, (56), 54 states have call predecessors, (56), 53 states have call successors, (56) [2024-11-28 02:55:35,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 346 transitions. [2024-11-28 02:55:35,358 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 346 transitions. Word has length 188 [2024-11-28 02:55:35,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:55:35,358 INFO L471 AbstractCegarLoop]: Abstraction has 281 states and 346 transitions. [2024-11-28 02:55:35,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2024-11-28 02:55:35,359 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 346 transitions. [2024-11-28 02:55:35,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-11-28 02:55:35,360 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:55:35,361 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:55:35,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 02:55:35,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:55:35,562 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:55:35,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:55:35,562 INFO L85 PathProgramCache]: Analyzing trace with hash 123321630, now seen corresponding path program 1 times [2024-11-28 02:55:35,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:55:35,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898498943] [2024-11-28 02:55:35,562 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:55:35,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:55:40,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:55:42,237 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-28 02:55:42,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:55:42,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898498943] [2024-11-28 02:55:42,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898498943] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:55:42,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736682973] [2024-11-28 02:55:42,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:55:42,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:55:42,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:55:42,241 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:55:42,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 02:55:49,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:55:49,993 INFO L256 TraceCheckSpWp]: Trace formula consists of 4659 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-28 02:55:50,001 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:55:50,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 02:55:52,496 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-28 02:55:52,496 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:55:52,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736682973] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:55:52,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:55:52,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [7] total 17 [2024-11-28 02:55:52,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697126381] [2024-11-28 02:55:52,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:55:52,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 02:55:52,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:55:52,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 02:55:52,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:55:52,498 INFO L87 Difference]: Start difference. First operand 281 states and 346 transitions. Second operand has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 5 states have call successors, (30), 3 states have call predecessors, (30), 5 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2024-11-28 02:55:57,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:55:57,039 INFO L93 Difference]: Finished difference Result 507 states and 631 transitions. [2024-11-28 02:55:57,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 02:55:57,039 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 5 states have call successors, (30), 3 states have call predecessors, (30), 5 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) Word has length 194 [2024-11-28 02:55:57,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:55:57,042 INFO L225 Difference]: With dead ends: 507 [2024-11-28 02:55:57,042 INFO L226 Difference]: Without dead ends: 303 [2024-11-28 02:55:57,043 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2024-11-28 02:55:57,044 INFO L435 NwaCegarLoop]: 240 mSDtfsCounter, 152 mSDsluCounter, 1565 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 1805 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:55:57,045 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 1805 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-28 02:55:57,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2024-11-28 02:55:57,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 283. [2024-11-28 02:55:57,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 194 states have (on average 1.2216494845360826) internal successors, (237), 198 states have internal predecessors, (237), 54 states have call successors, (54), 30 states have call predecessors, (54), 34 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2024-11-28 02:55:57,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 349 transitions. [2024-11-28 02:55:57,072 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 349 transitions. Word has length 194 [2024-11-28 02:55:57,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:55:57,073 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 349 transitions. [2024-11-28 02:55:57,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 5 states have call successors, (30), 3 states have call predecessors, (30), 5 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2024-11-28 02:55:57,073 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 349 transitions. [2024-11-28 02:55:57,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-11-28 02:55:57,075 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:55:57,075 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:55:57,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 02:55:57,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 02:55:57,276 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:55:57,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:55:57,276 INFO L85 PathProgramCache]: Analyzing trace with hash -97102823, now seen corresponding path program 1 times [2024-11-28 02:55:57,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:55:57,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689695989] [2024-11-28 02:55:57,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:55:57,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:56:02,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:56:07,714 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-28 02:56:07,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:56:07,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689695989] [2024-11-28 02:56:07,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689695989] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:56:07,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340878797] [2024-11-28 02:56:07,715 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:56:07,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:56:07,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:56:07,717 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:56:07,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 02:56:15,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:56:15,710 INFO L256 TraceCheckSpWp]: Trace formula consists of 4691 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-28 02:56:15,717 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:56:19,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2024-11-28 02:56:21,007 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 9 proven. 145 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-11-28 02:56:21,007 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:56:22,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 142 treesize of output 130 [2024-11-28 02:56:25,675 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2024-11-28 02:56:25,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340878797] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:56:25,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:56:25,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 11] total 34 [2024-11-28 02:56:25,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770500739] [2024-11-28 02:56:25,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:56:25,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-28 02:56:25,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:56:25,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-28 02:56:25,678 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=1042, Unknown=0, NotChecked=0, Total=1122 [2024-11-28 02:56:25,678 INFO L87 Difference]: Start difference. First operand 283 states and 349 transitions. Second operand has 34 states, 30 states have (on average 6.1) internal successors, (183), 30 states have internal predecessors, (183), 13 states have call successors, (77), 6 states have call predecessors, (77), 9 states have return successors, (71), 13 states have call predecessors, (71), 12 states have call successors, (71) [2024-11-28 02:56:46,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:56:46,299 INFO L93 Difference]: Finished difference Result 553 states and 707 transitions. [2024-11-28 02:56:46,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-28 02:56:46,301 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 30 states have (on average 6.1) internal successors, (183), 30 states have internal predecessors, (183), 13 states have call successors, (77), 6 states have call predecessors, (77), 9 states have return successors, (71), 13 states have call predecessors, (71), 12 states have call successors, (71) Word has length 201 [2024-11-28 02:56:46,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:56:46,304 INFO L225 Difference]: With dead ends: 553 [2024-11-28 02:56:46,304 INFO L226 Difference]: Without dead ends: 354 [2024-11-28 02:56:46,307 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=255, Invalid=3527, Unknown=0, NotChecked=0, Total=3782 [2024-11-28 02:56:46,308 INFO L435 NwaCegarLoop]: 149 mSDtfsCounter, 280 mSDsluCounter, 3494 mSDsCounter, 0 mSdLazyCounter, 1937 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 3643 SdHoareTripleChecker+Invalid, 2069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:56:46,308 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 3643 Invalid, 2069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1937 Invalid, 0 Unknown, 0 Unchecked, 14.0s Time] [2024-11-28 02:56:46,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2024-11-28 02:56:46,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 304. [2024-11-28 02:56:46,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 212 states have (on average 1.2452830188679245) internal successors, (264), 217 states have internal predecessors, (264), 54 states have call successors, (54), 30 states have call predecessors, (54), 37 states have return successors, (62), 56 states have call predecessors, (62), 53 states have call successors, (62) [2024-11-28 02:56:46,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 380 transitions. [2024-11-28 02:56:46,354 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 380 transitions. Word has length 201 [2024-11-28 02:56:46,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:56:46,355 INFO L471 AbstractCegarLoop]: Abstraction has 304 states and 380 transitions. [2024-11-28 02:56:46,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 30 states have (on average 6.1) internal successors, (183), 30 states have internal predecessors, (183), 13 states have call successors, (77), 6 states have call predecessors, (77), 9 states have return successors, (71), 13 states have call predecessors, (71), 12 states have call successors, (71) [2024-11-28 02:56:46,356 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 380 transitions. [2024-11-28 02:56:46,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-28 02:56:46,358 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:56:46,358 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:56:46,396 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 02:56:46,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-28 02:56:46,559 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:56:46,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:56:46,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1159764231, now seen corresponding path program 1 times [2024-11-28 02:56:46,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:56:46,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843509354] [2024-11-28 02:56:46,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:56:46,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:56:51,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:56:52,937 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2024-11-28 02:56:52,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:56:52,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843509354] [2024-11-28 02:56:52,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843509354] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:56:52,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414706582] [2024-11-28 02:56:52,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:56:52,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:56:52,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:56:52,940 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:56:52,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 02:57:00,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:57:00,878 INFO L256 TraceCheckSpWp]: Trace formula consists of 4694 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-28 02:57:00,883 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:57:01,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 02:57:02,735 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-28 02:57:02,735 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:57:02,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414706582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:57:02,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:57:02,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2024-11-28 02:57:02,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790737407] [2024-11-28 02:57:02,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:57:02,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:57:02,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:57:02,737 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:57:02,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:57:02,737 INFO L87 Difference]: Start difference. First operand 304 states and 380 transitions. Second operand has 11 states, 9 states have (on average 11.333333333333334) internal successors, (102), 10 states have internal predecessors, (102), 5 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) [2024-11-28 02:57:06,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:57:11,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:57:15,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:57:19,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:57:28,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:57:32,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:57:32,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:57:32,609 INFO L93 Difference]: Finished difference Result 553 states and 705 transitions. [2024-11-28 02:57:32,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 02:57:32,610 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 11.333333333333334) internal successors, (102), 10 states have internal predecessors, (102), 5 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) Word has length 202 [2024-11-28 02:57:32,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:57:32,612 INFO L225 Difference]: With dead ends: 553 [2024-11-28 02:57:32,612 INFO L226 Difference]: Without dead ends: 333 [2024-11-28 02:57:32,613 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2024-11-28 02:57:32,613 INFO L435 NwaCegarLoop]: 259 mSDtfsCounter, 343 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 98 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 1293 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:57:32,614 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 1293 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 550 Invalid, 6 Unknown, 0 Unchecked, 28.6s Time] [2024-11-28 02:57:32,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2024-11-28 02:57:32,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 306. [2024-11-28 02:57:32,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 213 states have (on average 1.244131455399061) internal successors, (265), 218 states have internal predecessors, (265), 55 states have call successors, (55), 30 states have call predecessors, (55), 37 states have return successors, (63), 57 states have call predecessors, (63), 54 states have call successors, (63) [2024-11-28 02:57:32,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 383 transitions. [2024-11-28 02:57:32,646 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 383 transitions. Word has length 202 [2024-11-28 02:57:32,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:57:32,647 INFO L471 AbstractCegarLoop]: Abstraction has 306 states and 383 transitions. [2024-11-28 02:57:32,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 11.333333333333334) internal successors, (102), 10 states have internal predecessors, (102), 5 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) [2024-11-28 02:57:32,647 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 383 transitions. [2024-11-28 02:57:32,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-28 02:57:32,649 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:57:32,649 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 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, 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] [2024-11-28 02:57:32,678 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 02:57:32,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-28 02:57:32,850 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:57:32,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:32,850 INFO L85 PathProgramCache]: Analyzing trace with hash -123335979, now seen corresponding path program 1 times [2024-11-28 02:57:32,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:32,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186390177] [2024-11-28 02:57:32,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:57:32,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:57:37,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:57:39,232 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2024-11-28 02:57:39,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:57:39,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186390177] [2024-11-28 02:57:39,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186390177] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:57:39,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647680084] [2024-11-28 02:57:39,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:57:39,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:57:39,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:57:39,238 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:57:39,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 02:57:47,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:57:47,443 INFO L256 TraceCheckSpWp]: Trace formula consists of 4723 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-28 02:57:47,449 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:57:48,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 02:57:49,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 02:57:49,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 02:57:52,430 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-28 02:57:52,431 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:57:52,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647680084] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:57:52,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:57:52,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [7] total 24 [2024-11-28 02:57:52,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762048374] [2024-11-28 02:57:52,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:57:52,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 02:57:52,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:57:52,432 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 02:57:52,432 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2024-11-28 02:57:52,433 INFO L87 Difference]: Start difference. First operand 306 states and 383 transitions. Second operand has 19 states, 15 states have (on average 7.533333333333333) internal successors, (113), 17 states have internal predecessors, (113), 9 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (31), 8 states have call predecessors, (31), 9 states have call successors, (31) [2024-11-28 02:57:56,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:58:08,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:58:12,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:58:14,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:58:14,837 INFO L93 Difference]: Finished difference Result 584 states and 747 transitions. [2024-11-28 02:58:14,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 02:58:14,838 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 7.533333333333333) internal successors, (113), 17 states have internal predecessors, (113), 9 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (31), 8 states have call predecessors, (31), 9 states have call successors, (31) Word has length 208 [2024-11-28 02:58:14,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:58:14,841 INFO L225 Difference]: With dead ends: 584 [2024-11-28 02:58:14,841 INFO L226 Difference]: Without dead ends: 362 [2024-11-28 02:58:14,842 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 189 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=104, Invalid=708, Unknown=0, NotChecked=0, Total=812 [2024-11-28 02:58:14,843 INFO L435 NwaCegarLoop]: 270 mSDtfsCounter, 315 mSDsluCounter, 2077 mSDsCounter, 0 mSdLazyCounter, 1212 mSolverCounterSat, 68 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 2347 SdHoareTripleChecker+Invalid, 1283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1212 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:58:14,843 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 2347 Invalid, 1283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1212 Invalid, 3 Unknown, 0 Unchecked, 21.5s Time] [2024-11-28 02:58:14,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2024-11-28 02:58:14,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 308. [2024-11-28 02:58:14,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 214 states have (on average 1.2429906542056075) internal successors, (266), 220 states have internal predecessors, (266), 55 states have call successors, (55), 30 states have call predecessors, (55), 38 states have return successors, (65), 57 states have call predecessors, (65), 54 states have call successors, (65) [2024-11-28 02:58:14,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 386 transitions. [2024-11-28 02:58:14,880 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 386 transitions. Word has length 208 [2024-11-28 02:58:14,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:58:14,881 INFO L471 AbstractCegarLoop]: Abstraction has 308 states and 386 transitions. [2024-11-28 02:58:14,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 7.533333333333333) internal successors, (113), 17 states have internal predecessors, (113), 9 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (31), 8 states have call predecessors, (31), 9 states have call successors, (31) [2024-11-28 02:58:14,881 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 386 transitions. [2024-11-28 02:58:14,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-28 02:58:14,883 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:58:14,883 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 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, 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] [2024-11-28 02:58:14,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 02:58:15,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 02:58:15,084 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:58:15,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:15,085 INFO L85 PathProgramCache]: Analyzing trace with hash -123157040, now seen corresponding path program 1 times [2024-11-28 02:58:15,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:58:15,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965954029] [2024-11-28 02:58:15,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:58:15,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:58:19,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:25,352 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 18 proven. 10 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2024-11-28 02:58:25,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:58:25,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965954029] [2024-11-28 02:58:25,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965954029] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:58:25,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254089721] [2024-11-28 02:58:25,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:58:25,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:25,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:58:25,354 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:58:25,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 02:58:33,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:34,016 INFO L256 TraceCheckSpWp]: Trace formula consists of 4755 conjuncts, 104 conjuncts are in the unsatisfiable core [2024-11-28 02:58:34,022 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:58:34,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 02:58:34,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 02:58:44,051 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 197 proven. 10 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-28 02:58:44,051 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:58:51,111 INFO L349 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2024-11-28 02:58:51,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 31 [2024-11-28 02:58:53,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254089721] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:58:53,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:58:53,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 22] total 33 [2024-11-28 02:58:53,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88265467] [2024-11-28 02:58:53,073 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:58:53,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-28 02:58:53,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:58:53,074 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-28 02:58:53,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1666, Unknown=0, NotChecked=0, Total=1806 [2024-11-28 02:58:53,075 INFO L87 Difference]: Start difference. First operand 308 states and 386 transitions. Second operand has 33 states, 27 states have (on average 5.592592592592593) internal successors, (151), 30 states have internal predecessors, (151), 14 states have call successors, (57), 5 states have call predecessors, (57), 11 states have return successors, (54), 13 states have call predecessors, (54), 14 states have call successors, (54) [2024-11-28 02:58:57,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:59:17,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:59:21,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:59:35,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:59:35,709 INFO L93 Difference]: Finished difference Result 697 states and 921 transitions. [2024-11-28 02:59:35,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-28 02:59:35,710 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 27 states have (on average 5.592592592592593) internal successors, (151), 30 states have internal predecessors, (151), 14 states have call successors, (57), 5 states have call predecessors, (57), 11 states have return successors, (54), 13 states have call predecessors, (54), 14 states have call successors, (54) Word has length 215 [2024-11-28 02:59:35,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:59:35,713 INFO L225 Difference]: With dead ends: 697 [2024-11-28 02:59:35,713 INFO L226 Difference]: Without dead ends: 529 [2024-11-28 02:59:35,716 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 295 SyntacticMatches, 6 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1246 ImplicationChecksByTransitivity, 21.2s TimeCoverageRelationStatistics Valid=462, Invalid=5390, Unknown=0, NotChecked=0, Total=5852 [2024-11-28 02:59:35,716 INFO L435 NwaCegarLoop]: 282 mSDtfsCounter, 360 mSDsluCounter, 5311 mSDsCounter, 0 mSdLazyCounter, 3174 mSolverCounterSat, 92 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 5593 SdHoareTripleChecker+Invalid, 3269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 3174 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:59:35,717 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 5593 Invalid, 3269 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [92 Valid, 3174 Invalid, 3 Unknown, 0 Unchecked, 34.0s Time] [2024-11-28 02:59:35,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2024-11-28 02:59:35,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 441. [2024-11-28 02:59:35,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 314 states have (on average 1.2515923566878981) internal successors, (393), 320 states have internal predecessors, (393), 73 states have call successors, (73), 42 states have call predecessors, (73), 53 states have return successors, (94), 78 states have call predecessors, (94), 71 states have call successors, (94) [2024-11-28 02:59:35,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 560 transitions. [2024-11-28 02:59:35,783 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 560 transitions. Word has length 215 [2024-11-28 02:59:35,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:59:35,783 INFO L471 AbstractCegarLoop]: Abstraction has 441 states and 560 transitions. [2024-11-28 02:59:35,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 27 states have (on average 5.592592592592593) internal successors, (151), 30 states have internal predecessors, (151), 14 states have call successors, (57), 5 states have call predecessors, (57), 11 states have return successors, (54), 13 states have call predecessors, (54), 14 states have call successors, (54) [2024-11-28 02:59:35,784 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 560 transitions. [2024-11-28 02:59:35,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-28 02:59:35,785 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:59:35,786 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:35,818 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 02:59:35,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:59:35,986 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:59:35,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:35,987 INFO L85 PathProgramCache]: Analyzing trace with hash 792839181, now seen corresponding path program 2 times [2024-11-28 02:59:35,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:35,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647800475] [2024-11-28 02:59:35,987 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:59:35,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:41,342 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:59:41,342 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:59:46,113 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2024-11-28 02:59:46,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:46,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647800475] [2024-11-28 02:59:46,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647800475] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:46,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:59:46,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:59:46,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479773548] [2024-11-28 02:59:46,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:46,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 02:59:46,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:46,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 02:59:46,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:59:46,115 INFO L87 Difference]: Start difference. First operand 441 states and 560 transitions. Second operand has 9 states, 8 states have (on average 9.625) internal successors, (77), 9 states have internal predecessors, (77), 4 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2024-11-28 02:59:48,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:59:48,152 INFO L93 Difference]: Finished difference Result 679 states and 879 transitions. [2024-11-28 02:59:48,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:59:48,153 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.625) internal successors, (77), 9 states have internal predecessors, (77), 4 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 228 [2024-11-28 02:59:48,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:59:48,158 INFO L225 Difference]: With dead ends: 679 [2024-11-28 02:59:48,158 INFO L226 Difference]: Without dead ends: 490 [2024-11-28 02:59:48,159 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:59:48,160 INFO L435 NwaCegarLoop]: 201 mSDtfsCounter, 28 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1329 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:59:48,160 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1329 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-28 02:59:48,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2024-11-28 02:59:48,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 453. [2024-11-28 02:59:48,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 322 states have (on average 1.2515527950310559) internal successors, (403), 330 states have internal predecessors, (403), 75 states have call successors, (75), 42 states have call predecessors, (75), 55 states have return successors, (101), 80 states have call predecessors, (101), 73 states have call successors, (101) [2024-11-28 02:59:48,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 579 transitions. [2024-11-28 02:59:48,223 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 579 transitions. Word has length 228 [2024-11-28 02:59:48,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:59:48,224 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 579 transitions. [2024-11-28 02:59:48,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.625) internal successors, (77), 9 states have internal predecessors, (77), 4 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2024-11-28 02:59:48,224 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 579 transitions. [2024-11-28 02:59:48,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-28 02:59:48,227 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:59:48,227 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 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, 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] [2024-11-28 02:59:48,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 02:59:48,227 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:59:48,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:48,228 INFO L85 PathProgramCache]: Analyzing trace with hash -272689264, now seen corresponding path program 2 times [2024-11-28 02:59:48,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:48,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30297995] [2024-11-28 02:59:48,228 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:59:48,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:54,312 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:59:54,312 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:59:56,039 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 17 proven. 9 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2024-11-28 02:59:56,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:56,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30297995] [2024-11-28 02:59:56,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30297995] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:59:56,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836340287] [2024-11-28 02:59:56,039 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:59:56,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:59:56,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:59:56,041 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:59:56,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bd24f9d-c2fa-498f-b5d7-7ae34c3f11ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process