./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC --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 a2f0a82a50bc275c6e2e2ec318329147ea6f6c7b468577c521e1ed81fea6d241 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:33:13,130 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:33:13,229 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-24 01:33:13,235 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:33:13,235 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:33:13,276 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:33:13,277 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:33:13,277 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:33:13,279 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:33:13,279 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:33:13,280 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:33:13,280 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:33:13,280 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:33:13,281 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:33:13,281 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:33:13,281 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:33:13,281 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:33:13,281 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:33:13,281 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:33:13,281 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:33:13,281 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:33:13,281 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:33:13,281 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:33:13,281 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:33:13,282 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:33:13,282 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:33:13,282 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:33:13,282 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:33:13,282 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:33:13,282 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:33:13,282 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:33:13,282 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:33:13,282 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:33:13,282 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:33:13,283 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:33:13,283 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:33:13,283 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:33:13,283 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:33:13,284 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:33:13,284 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:33:13,284 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:33:13,284 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:33:13,284 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:33:13,284 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:33:13,285 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:33:13,285 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_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC 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 -> a2f0a82a50bc275c6e2e2ec318329147ea6f6c7b468577c521e1ed81fea6d241 [2024-11-24 01:33:13,619 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:33:13,629 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:33:13,633 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:33:13,634 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:33:13,635 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:33:13,638 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i [2024-11-24 01:33:16,710 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/data/2b4487314/8b9ebe5c733a418f885d74ef86e63695/FLAG8000a03ab [2024-11-24 01:33:17,360 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:33:17,361 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i [2024-11-24 01:33:17,409 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/data/2b4487314/8b9ebe5c733a418f885d74ef86e63695/FLAG8000a03ab [2024-11-24 01:33:17,430 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/data/2b4487314/8b9ebe5c733a418f885d74ef86e63695 [2024-11-24 01:33:17,434 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:33:17,436 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:33:17,438 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:33:17,438 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:33:17,442 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:33:17,443 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:33:17" (1/1) ... [2024-11-24 01:33:17,446 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fd149ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:33:17, skipping insertion in model container [2024-11-24 01:33:17,446 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:33:17" (1/1) ... [2024-11-24 01:33:17,574 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:33:17,896 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_586f54eb-e486-4451-8e91-d92c37da1bfc/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i[4495,4508] [2024-11-24 01:33:17,907 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_586f54eb-e486-4451-8e91-d92c37da1bfc/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i[4555,4568] [2024-11-24 01:33:19,119 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:19,120 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:19,120 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:19,121 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:19,122 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:19,137 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:19,138 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:19,140 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:19,141 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:19,143 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:19,144 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:19,145 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:19,145 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:20,457 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:20,460 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:20,491 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:20,492 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:20,500 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:20,503 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:20,518 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:20,520 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:20,521 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:20,521 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:20,522 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:20,522 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:20,523 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:20,580 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_586f54eb-e486-4451-8e91-d92c37da1bfc/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i[229734,229747] [2024-11-24 01:33:20,584 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:33:20,624 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:33:20,644 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_586f54eb-e486-4451-8e91-d92c37da1bfc/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i[4495,4508] [2024-11-24 01:33:20,645 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_586f54eb-e486-4451-8e91-d92c37da1bfc/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i[4555,4568] [2024-11-24 01:33:20,702 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:20,703 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:20,704 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:20,704 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:20,705 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:20,713 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:20,713 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:20,714 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:20,715 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:20,716 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:20,717 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:20,717 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:20,718 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:20,891 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7576-7587] [2024-11-24 01:33:21,014 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:21,015 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:21,024 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:21,026 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:21,029 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:21,029 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:21,042 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:21,043 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:21,044 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:21,045 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:21,045 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:21,046 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:21,046 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:33:21,074 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_586f54eb-e486-4451-8e91-d92c37da1bfc/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i[229734,229747] [2024-11-24 01:33:21,074 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:33:21,417 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:33:21,418 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:33:21 WrapperNode [2024-11-24 01:33:21,418 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:33:21,420 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:33:21,420 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:33:21,420 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:33:21,430 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:33:21" (1/1) ... [2024-11-24 01:33:21,560 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:33:21" (1/1) ... [2024-11-24 01:33:21,672 INFO L138 Inliner]: procedures = 764, calls = 2494, calls flagged for inlining = 70, calls inlined = 19, statements flattened = 1095 [2024-11-24 01:33:21,673 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:33:21,674 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:33:21,674 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:33:21,674 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:33:21,688 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:33:21" (1/1) ... [2024-11-24 01:33:21,688 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:33:21" (1/1) ... [2024-11-24 01:33:21,706 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:33:21" (1/1) ... [2024-11-24 01:33:21,825 INFO L175 MemorySlicer]: Split 368 memory accesses to 12 slices as follows [15, 2, 2, 7, 4, 2, 3, 3, 72, 14, 1, 243]. 66 percent of accesses are in the largest equivalence class. The 23 initializations are split as follows [0, 2, 0, 0, 0, 0, 0, 0, 0, 10, 0, 11]. The 256 writes are split as follows [1, 0, 1, 3, 2, 1, 3, 2, 10, 0, 1, 232]. [2024-11-24 01:33:21,825 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:33:21" (1/1) ... [2024-11-24 01:33:21,825 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:33:21" (1/1) ... [2024-11-24 01:33:21,893 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:33:21" (1/1) ... [2024-11-24 01:33:21,895 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:33:21" (1/1) ... [2024-11-24 01:33:21,905 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:33:21" (1/1) ... [2024-11-24 01:33:21,928 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:33:21" (1/1) ... [2024-11-24 01:33:21,936 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:33:21" (1/1) ... [2024-11-24 01:33:21,961 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:33:21,962 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:33:21,962 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:33:21,962 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:33:21,963 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:33:21" (1/1) ... [2024-11-24 01:33:21,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:33:21,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:33:22,000 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:33:22,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:33:22,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-11-24 01:33:22,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-11-24 01:33:22,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-11-24 01:33:22,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-11-24 01:33:22,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2024-11-24 01:33:22,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2024-11-24 01:33:22,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2024-11-24 01:33:22,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2024-11-24 01:33:22,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2024-11-24 01:33:22,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2024-11-24 01:33:22,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2024-11-24 01:33:22,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#11 [2024-11-24 01:33:22,038 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_keys_eq [2024-11-24 01:33:22,038 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_keys_eq [2024-11-24 01:33:22,038 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2024-11-24 01:33:22,038 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2024-11-24 01:33:22,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-24 01:33:22,038 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-24 01:33:22,038 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-24 01:33:22,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2024-11-24 01:33:22,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2024-11-24 01:33:22,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2024-11-24 01:33:22,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2024-11-24 01:33:22,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2024-11-24 01:33:22,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2024-11-24 01:33:22,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2024-11-24 01:33:22,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2024-11-24 01:33:22,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2024-11-24 01:33:22,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#9 [2024-11-24 01:33:22,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#10 [2024-11-24 01:33:22,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#11 [2024-11-24 01:33:22,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-24 01:33:22,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-24 01:33:22,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-24 01:33:22,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-24 01:33:22,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-24 01:33:22,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-24 01:33:22,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-11-24 01:33:22,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2024-11-24 01:33:22,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2024-11-24 01:33:22,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#9 [2024-11-24 01:33:22,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#10 [2024-11-24 01:33:22,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#11 [2024-11-24 01:33:22,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-24 01:33:22,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-24 01:33:22,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-24 01:33:22,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-24 01:33:22,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-24 01:33:22,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-24 01:33:22,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-24 01:33:22,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-24 01:33:22,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-24 01:33:22,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-24 01:33:22,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-24 01:33:22,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-24 01:33:22,040 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-11-24 01:33:22,040 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-11-24 01:33:22,041 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-24 01:33:22,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-24 01:33:22,041 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2024-11-24 01:33:22,041 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2024-11-24 01:33:22,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-24 01:33:22,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:33:22,041 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2024-11-24 01:33:22,041 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2024-11-24 01:33:22,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-24 01:33:22,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-24 01:33:22,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-24 01:33:22,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-24 01:33:22,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-24 01:33:22,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-24 01:33:22,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-24 01:33:22,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-24 01:33:22,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-11-24 01:33:22,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2024-11-24 01:33:22,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2024-11-24 01:33:22,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#11 [2024-11-24 01:33:22,045 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2024-11-24 01:33:22,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2024-11-24 01:33:22,046 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2024-11-24 01:33:22,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2024-11-24 01:33:22,046 INFO L130 BoogieDeclarations]: Found specification of procedure s_safe_eq_check [2024-11-24 01:33:22,046 INFO L138 BoogieDeclarations]: Found implementation of procedure s_safe_eq_check [2024-11-24 01:33:22,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:33:22,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:33:22,046 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-24 01:33:22,046 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-24 01:33:22,046 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2024-11-24 01:33:22,046 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2024-11-24 01:33:22,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-24 01:33:22,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-24 01:33:22,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-24 01:33:22,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-24 01:33:22,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-24 01:33:22,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-24 01:33:22,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-11-24 01:33:22,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2024-11-24 01:33:22,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#8 [2024-11-24 01:33:22,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#9 [2024-11-24 01:33:22,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#10 [2024-11-24 01:33:22,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#11 [2024-11-24 01:33:22,047 INFO L130 BoogieDeclarations]: Found specification of procedure s_find_entry [2024-11-24 01:33:22,047 INFO L138 BoogieDeclarations]: Found implementation of procedure s_find_entry [2024-11-24 01:33:22,047 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 01:33:22,047 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 01:33:22,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-24 01:33:22,047 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2024-11-24 01:33:22,047 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2024-11-24 01:33:22,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-24 01:33:22,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-24 01:33:22,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-24 01:33:22,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-24 01:33:22,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-24 01:33:22,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-24 01:33:22,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-24 01:33:22,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-24 01:33:22,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-24 01:33:22,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2024-11-24 01:33:22,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2024-11-24 01:33:22,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2024-11-24 01:33:22,048 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2024-11-24 01:33:22,048 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2024-11-24 01:33:22,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-24 01:33:22,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-24 01:33:22,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-24 01:33:22,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-24 01:33:22,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-24 01:33:22,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-24 01:33:22,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-24 01:33:22,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-24 01:33:22,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2024-11-24 01:33:22,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2024-11-24 01:33:22,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#10 [2024-11-24 01:33:22,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#11 [2024-11-24 01:33:22,053 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-24 01:33:22,053 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-24 01:33:22,053 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2024-11-24 01:33:22,053 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2024-11-24 01:33:22,053 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2024-11-24 01:33:22,053 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2024-11-24 01:33:22,053 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-24 01:33:22,053 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-24 01:33:22,053 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_entry [2024-11-24 01:33:22,053 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_entry [2024-11-24 01:33:22,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-24 01:33:22,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-24 01:33:22,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-24 01:33:22,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-24 01:33:22,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-24 01:33:22,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-24 01:33:22,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-24 01:33:22,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-24 01:33:22,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-24 01:33:22,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-24 01:33:22,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-24 01:33:22,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-24 01:33:22,054 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_for [2024-11-24 01:33:22,054 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_for [2024-11-24 01:33:22,054 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2024-11-24 01:33:22,054 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2024-11-24 01:33:22,054 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2024-11-24 01:33:22,054 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2024-11-24 01:33:22,054 INFO L130 BoogieDeclarations]: Found specification of procedure uninterpreted_equals [2024-11-24 01:33:22,054 INFO L138 BoogieDeclarations]: Found implementation of procedure uninterpreted_equals [2024-11-24 01:33:22,054 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-24 01:33:22,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-24 01:33:22,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:33:22,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 01:33:22,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-24 01:33:22,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-24 01:33:22,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-24 01:33:22,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-24 01:33:22,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-24 01:33:22,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-24 01:33:22,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-24 01:33:22,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-24 01:33:22,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-24 01:33:22,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-24 01:33:22,055 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2024-11-24 01:33:22,055 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2024-11-24 01:33:22,651 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:33:22,654 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:33:22,704 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-24 01:33:22,770 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume false; [2024-11-24 01:33:22,771 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume !false; [2024-11-24 01:33:23,019 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-24 01:33:23,025 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-24 01:33:23,152 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2024-11-24 01:33:23,152 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2024-11-24 01:33:23,153 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##49: assume !false; [2024-11-24 01:33:23,153 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##48: assume false; [2024-11-24 01:33:23,154 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-24 01:33:23,177 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2024-11-24 01:33:23,178 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2024-11-24 01:33:23,406 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-24 01:33:23,407 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-24 01:33:29,196 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2024-11-24 01:33:29,197 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2024-11-24 01:33:29,197 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2024-11-24 01:33:29,197 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2024-11-24 01:33:29,370 INFO L? ?]: Removed 314 outVars from TransFormulas that were not future-live. [2024-11-24 01:33:29,370 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:33:29,398 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:33:29,399 INFO L312 CfgBuilder]: Removed 11 assume(true) statements. [2024-11-24 01:33:29,401 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:33:29 BoogieIcfgContainer [2024-11-24 01:33:29,401 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:33:29,404 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:33:29,404 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:33:29,409 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:33:29,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:33:17" (1/3) ... [2024-11-24 01:33:29,410 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f50686f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:33:29, skipping insertion in model container [2024-11-24 01:33:29,411 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:33:21" (2/3) ... [2024-11-24 01:33:29,411 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f50686f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:33:29, skipping insertion in model container [2024-11-24 01:33:29,411 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:33:29" (3/3) ... [2024-11-24 01:33:29,412 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_hash_table_remove_harness.i [2024-11-24 01:33:29,431 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:33:29,433 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_hash_table_remove_harness.i that has 28 procedures, 336 locations, 1 initial locations, 9 loop locations, and 1 error locations. [2024-11-24 01:33:29,518 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:33:29,530 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;@64b95e55, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:33:29,530 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 01:33:29,535 INFO L276 IsEmpty]: Start isEmpty. Operand has 336 states, 226 states have (on average 1.2654867256637168) internal successors, (286), 221 states have internal predecessors, (286), 87 states have call successors, (87), 27 states have call predecessors, (87), 27 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2024-11-24 01:33:29,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-24 01:33:29,551 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:33:29,552 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:33:29,552 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:33:29,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:33:29,558 INFO L85 PathProgramCache]: Analyzing trace with hash 889445650, now seen corresponding path program 1 times [2024-11-24 01:33:29,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:33:29,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285432413] [2024-11-24 01:33:29,565 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:33:29,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:33:36,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:33:37,454 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 419 trivial. 0 not checked. [2024-11-24 01:33:37,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:33:37,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285432413] [2024-11-24 01:33:37,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285432413] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:33:37,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641077383] [2024-11-24 01:33:37,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:33:37,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:33:37,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:33:37,463 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:33:37,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:33:44,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:33:44,865 INFO L256 TraceCheckSpWp]: Trace formula consists of 4563 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-24 01:33:44,876 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:33:44,900 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked. [2024-11-24 01:33:44,900 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:33:44,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641077383] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:33:44,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:33:44,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-24 01:33:44,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136599139] [2024-11-24 01:33:44,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:33:44,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 01:33:44,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:33:44,925 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 01:33:44,926 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:33:44,929 INFO L87 Difference]: Start difference. First operand has 336 states, 226 states have (on average 1.2654867256637168) internal successors, (286), 221 states have internal predecessors, (286), 87 states have call successors, (87), 27 states have call predecessors, (87), 27 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) Second operand has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2024-11-24 01:33:44,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:33:44,993 INFO L93 Difference]: Finished difference Result 666 states and 980 transitions. [2024-11-24 01:33:44,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 01:33:44,995 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 182 [2024-11-24 01:33:44,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:33:45,006 INFO L225 Difference]: With dead ends: 666 [2024-11-24 01:33:45,006 INFO L226 Difference]: Without dead ends: 328 [2024-11-24 01:33:45,012 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:33:45,015 INFO L435 NwaCegarLoop]: 444 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, 444 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 [2024-11-24 01:33:45,016 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:33:45,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2024-11-24 01:33:45,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2024-11-24 01:33:45,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 213 states have (on average 1.2347417840375587) internal successors, (263), 215 states have internal predecessors, (263), 87 states have call successors, (87), 27 states have call predecessors, (87), 27 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2024-11-24 01:33:45,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 435 transitions. [2024-11-24 01:33:45,095 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 435 transitions. Word has length 182 [2024-11-24 01:33:45,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:33:45,097 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 435 transitions. [2024-11-24 01:33:45,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2024-11-24 01:33:45,097 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 435 transitions. [2024-11-24 01:33:45,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-24 01:33:45,104 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:33:45,105 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:33:45,118 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 01:33:45,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-24 01:33:45,306 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:33:45,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:33:45,307 INFO L85 PathProgramCache]: Analyzing trace with hash 670941208, now seen corresponding path program 1 times [2024-11-24 01:33:45,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:33:45,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643630879] [2024-11-24 01:33:45,307 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:33:45,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:33:50,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:33:52,319 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2024-11-24 01:33:52,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:33:52,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643630879] [2024-11-24 01:33:52,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643630879] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:33:52,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:33:52,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:33:52,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531159639] [2024-11-24 01:33:52,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:33:52,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:33:52,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:33:52,325 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:33:52,325 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:33:52,325 INFO L87 Difference]: Start difference. First operand 328 states and 435 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2024-11-24 01:33:52,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:33:52,559 INFO L93 Difference]: Finished difference Result 619 states and 825 transitions. [2024-11-24 01:33:52,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:33:52,560 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) Word has length 182 [2024-11-24 01:33:52,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:33:52,568 INFO L225 Difference]: With dead ends: 619 [2024-11-24 01:33:52,568 INFO L226 Difference]: Without dead ends: 333 [2024-11-24 01:33:52,572 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:33:52,573 INFO L435 NwaCegarLoop]: 432 mSDtfsCounter, 0 mSDsluCounter, 1292 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1724 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:33:52,573 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1724 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:33:52,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2024-11-24 01:33:52,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2024-11-24 01:33:52,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 217 states have (on average 1.2304147465437787) internal successors, (267), 219 states have internal predecessors, (267), 87 states have call successors, (87), 27 states have call predecessors, (87), 28 states have return successors, (86), 86 states have call predecessors, (86), 85 states have call successors, (86) [2024-11-24 01:33:52,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 440 transitions. [2024-11-24 01:33:52,606 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 440 transitions. Word has length 182 [2024-11-24 01:33:52,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:33:52,607 INFO L471 AbstractCegarLoop]: Abstraction has 333 states and 440 transitions. [2024-11-24 01:33:52,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2024-11-24 01:33:52,608 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 440 transitions. [2024-11-24 01:33:52,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-24 01:33:52,614 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:33:52,615 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:33:52,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 01:33:52,615 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:33:52,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:33:52,616 INFO L85 PathProgramCache]: Analyzing trace with hash -22658712, now seen corresponding path program 1 times [2024-11-24 01:33:52,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:33:52,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77422127] [2024-11-24 01:33:52,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:33:52,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:33:57,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:34:02,885 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-11-24 01:34:02,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:34:02,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77422127] [2024-11-24 01:34:02,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77422127] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:34:02,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096495208] [2024-11-24 01:34:02,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:34:02,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:34:02,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:34:02,888 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:34:02,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 01:34:09,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:34:09,233 INFO L256 TraceCheckSpWp]: Trace formula consists of 4567 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-24 01:34:09,243 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:34:10,588 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 27 proven. 15 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2024-11-24 01:34:10,589 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:34:12,416 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2024-11-24 01:34:12,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096495208] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-24 01:34:12,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-24 01:34:12,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10, 8] total 18 [2024-11-24 01:34:12,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335462665] [2024-11-24 01:34:12,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:34:12,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:34:12,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:34:12,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:34:12,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2024-11-24 01:34:12,419 INFO L87 Difference]: Start difference. First operand 333 states and 440 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2024-11-24 01:34:12,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:34:12,857 INFO L93 Difference]: Finished difference Result 339 states and 445 transitions. [2024-11-24 01:34:12,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:34:12,858 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) Word has length 188 [2024-11-24 01:34:12,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:34:12,862 INFO L225 Difference]: With dead ends: 339 [2024-11-24 01:34:12,862 INFO L226 Difference]: Without dead ends: 337 [2024-11-24 01:34:12,863 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2024-11-24 01:34:12,864 INFO L435 NwaCegarLoop]: 432 mSDtfsCounter, 4 mSDsluCounter, 1276 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1708 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:34:12,864 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1708 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:34:12,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2024-11-24 01:34:12,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2024-11-24 01:34:12,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 220 states have (on average 1.2272727272727273) internal successors, (270), 222 states have internal predecessors, (270), 87 states have call successors, (87), 28 states have call predecessors, (87), 29 states have return successors, (86), 86 states have call predecessors, (86), 85 states have call successors, (86) [2024-11-24 01:34:12,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 443 transitions. [2024-11-24 01:34:12,904 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 443 transitions. Word has length 188 [2024-11-24 01:34:12,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:34:12,905 INFO L471 AbstractCegarLoop]: Abstraction has 337 states and 443 transitions. [2024-11-24 01:34:12,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2024-11-24 01:34:12,906 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 443 transitions. [2024-11-24 01:34:12,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-11-24 01:34:12,909 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:34:12,909 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:34:12,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-24 01:34:13,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:34:13,110 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:34:13,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:34:13,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1547383446, now seen corresponding path program 1 times [2024-11-24 01:34:13,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:34:13,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372720592] [2024-11-24 01:34:13,111 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:34:13,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:34:17,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:34:22,287 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-11-24 01:34:22,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:34:22,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372720592] [2024-11-24 01:34:22,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372720592] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:34:22,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120683010] [2024-11-24 01:34:22,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:34:22,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:34:22,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:34:22,290 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:34:22,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 01:34:29,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:34:29,311 INFO L256 TraceCheckSpWp]: Trace formula consists of 4601 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-24 01:34:29,319 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:34:29,764 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 [2024-11-24 01:34:36,224 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 16 treesize of output 8 [2024-11-24 01:34:37,093 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 219 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2024-11-24 01:34:37,093 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:34:37,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120683010] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:34:37,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:34:37,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [10] total 17 [2024-11-24 01:34:37,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143777793] [2024-11-24 01:34:37,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:34:37,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-24 01:34:37,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:34:37,095 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-24 01:34:37,095 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2024-11-24 01:34:37,096 INFO L87 Difference]: Start difference. First operand 337 states and 443 transitions. Second operand has 13 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 7 states have call successors, (34), 4 states have call predecessors, (34), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2024-11-24 01:34:44,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:34:44,315 INFO L93 Difference]: Finished difference Result 598 states and 793 transitions. [2024-11-24 01:34:44,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-24 01:34:44,316 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 7 states have call successors, (34), 4 states have call predecessors, (34), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) Word has length 201 [2024-11-24 01:34:44,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:34:44,323 INFO L225 Difference]: With dead ends: 598 [2024-11-24 01:34:44,323 INFO L226 Difference]: Without dead ends: 364 [2024-11-24 01:34:44,324 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 162 SyntacticMatches, 33 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2024-11-24 01:34:44,325 INFO L435 NwaCegarLoop]: 386 mSDtfsCounter, 360 mSDsluCounter, 3535 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 3921 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:34:44,326 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 3921 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2024-11-24 01:34:44,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2024-11-24 01:34:44,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 355. [2024-11-24 01:34:44,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 234 states have (on average 1.2222222222222223) internal successors, (286), 237 states have internal predecessors, (286), 87 states have call successors, (87), 31 states have call predecessors, (87), 33 states have return successors, (93), 86 states have call predecessors, (93), 85 states have call successors, (93) [2024-11-24 01:34:44,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 466 transitions. [2024-11-24 01:34:44,361 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 466 transitions. Word has length 201 [2024-11-24 01:34:44,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:34:44,362 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 466 transitions. [2024-11-24 01:34:44,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 7 states have call successors, (34), 4 states have call predecessors, (34), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2024-11-24 01:34:44,362 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 466 transitions. [2024-11-24 01:34:44,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-24 01:34:44,366 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:34:44,366 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:34:44,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-24 01:34:44,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:34:44,567 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:34:44,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:34:44,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1508572522, now seen corresponding path program 1 times [2024-11-24 01:34:44,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:34:44,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394206771] [2024-11-24 01:34:44,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:34:44,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:34:50,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:34:54,244 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2024-11-24 01:34:54,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:34:54,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394206771] [2024-11-24 01:34:54,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394206771] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:34:54,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377557014] [2024-11-24 01:34:54,245 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:34:54,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:34:54,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:34:54,247 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:34:54,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 01:35:01,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:35:01,518 INFO L256 TraceCheckSpWp]: Trace formula consists of 4633 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-24 01:35:01,526 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:35:02,338 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 11 treesize of output 7 [2024-11-24 01:35:02,367 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 8 treesize of output 1 [2024-11-24 01:35:14,818 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 329 proven. 6 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2024-11-24 01:35:14,820 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:35:18,780 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 24 treesize of output 20 [2024-11-24 01:35:18,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 4 [2024-11-24 01:35:18,824 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 28 treesize of output 24 [2024-11-24 01:35:19,773 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2024-11-24 01:35:19,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377557014] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:35:19,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:35:19,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 19, 17] total 31 [2024-11-24 01:35:19,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824189742] [2024-11-24 01:35:19,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:35:19,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-24 01:35:19,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:35:19,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-24 01:35:19,777 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=829, Unknown=0, NotChecked=0, Total=930 [2024-11-24 01:35:19,777 INFO L87 Difference]: Start difference. First operand 355 states and 466 transitions. Second operand has 31 states, 29 states have (on average 5.655172413793103) internal successors, (164), 28 states have internal predecessors, (164), 13 states have call successors, (75), 5 states have call predecessors, (75), 9 states have return successors, (73), 12 states have call predecessors, (73), 12 states have call successors, (73) [2024-11-24 01:35:33,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:35:33,994 INFO L93 Difference]: Finished difference Result 648 states and 873 transitions. [2024-11-24 01:35:33,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-24 01:35:33,995 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 5.655172413793103) internal successors, (164), 28 states have internal predecessors, (164), 13 states have call successors, (75), 5 states have call predecessors, (75), 9 states have return successors, (73), 12 states have call predecessors, (73), 12 states have call successors, (73) Word has length 208 [2024-11-24 01:35:33,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:35:33,999 INFO L225 Difference]: With dead ends: 648 [2024-11-24 01:35:33,999 INFO L226 Difference]: Without dead ends: 370 [2024-11-24 01:35:34,001 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 364 SyntacticMatches, 31 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=164, Invalid=1396, Unknown=0, NotChecked=0, Total=1560 [2024-11-24 01:35:34,002 INFO L435 NwaCegarLoop]: 407 mSDtfsCounter, 406 mSDsluCounter, 6060 mSDsCounter, 0 mSdLazyCounter, 1564 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 6467 SdHoareTripleChecker+Invalid, 1664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:35:34,002 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 6467 Invalid, 1664 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [100 Valid, 1564 Invalid, 0 Unknown, 0 Unchecked, 12.5s Time] [2024-11-24 01:35:34,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2024-11-24 01:35:34,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 360. [2024-11-24 01:35:34,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 238 states have (on average 1.2226890756302522) internal successors, (291), 242 states have internal predecessors, (291), 87 states have call successors, (87), 31 states have call predecessors, (87), 34 states have return successors, (96), 86 states have call predecessors, (96), 85 states have call successors, (96) [2024-11-24 01:35:34,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 474 transitions. [2024-11-24 01:35:34,036 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 474 transitions. Word has length 208 [2024-11-24 01:35:34,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:35:34,036 INFO L471 AbstractCegarLoop]: Abstraction has 360 states and 474 transitions. [2024-11-24 01:35:34,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 5.655172413793103) internal successors, (164), 28 states have internal predecessors, (164), 13 states have call successors, (75), 5 states have call predecessors, (75), 9 states have return successors, (73), 12 states have call predecessors, (73), 12 states have call successors, (73) [2024-11-24 01:35:34,037 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 474 transitions. [2024-11-24 01:35:34,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-24 01:35:34,039 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:35:34,040 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:35:34,062 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-24 01:35:34,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:35:34,240 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:35:34,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:35:34,241 INFO L85 PathProgramCache]: Analyzing trace with hash 766315758, now seen corresponding path program 1 times [2024-11-24 01:35:34,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:35:34,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133858790] [2024-11-24 01:35:34,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:35:34,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:35:40,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:35:41,020 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2024-11-24 01:35:41,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:35:41,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133858790] [2024-11-24 01:35:41,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133858790] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:35:41,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263766792] [2024-11-24 01:35:41,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:35:41,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:35:41,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:35:41,023 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:35:41,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 01:35:47,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:35:47,903 INFO L256 TraceCheckSpWp]: Trace formula consists of 4623 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 01:35:47,913 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:35:48,642 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2024-11-24 01:35:48,642 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:35:48,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263766792] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:35:48,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:35:48,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-24 01:35:48,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323720947] [2024-11-24 01:35:48,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:35:48,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:35:48,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:35:48,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:35:48,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:35:48,644 INFO L87 Difference]: Start difference. First operand 360 states and 474 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2024-11-24 01:35:50,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:35:50,124 INFO L93 Difference]: Finished difference Result 648 states and 872 transitions. [2024-11-24 01:35:50,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:35:50,125 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 208 [2024-11-24 01:35:50,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:35:50,129 INFO L225 Difference]: With dead ends: 648 [2024-11-24 01:35:50,129 INFO L226 Difference]: Without dead ends: 365 [2024-11-24 01:35:50,131 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:35:50,132 INFO L435 NwaCegarLoop]: 385 mSDtfsCounter, 448 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:35:50,133 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 1100 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-24 01:35:50,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2024-11-24 01:35:50,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 362. [2024-11-24 01:35:50,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 239 states have (on average 1.2217573221757323) internal successors, (292), 243 states have internal predecessors, (292), 88 states have call successors, (88), 31 states have call predecessors, (88), 34 states have return successors, (98), 87 states have call predecessors, (98), 86 states have call successors, (98) [2024-11-24 01:35:50,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 478 transitions. [2024-11-24 01:35:50,187 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 478 transitions. Word has length 208 [2024-11-24 01:35:50,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:35:50,188 INFO L471 AbstractCegarLoop]: Abstraction has 362 states and 478 transitions. [2024-11-24 01:35:50,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2024-11-24 01:35:50,188 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 478 transitions. [2024-11-24 01:35:50,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-11-24 01:35:50,191 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:35:50,191 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:35:50,217 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-24 01:35:50,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-24 01:35:50,392 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:35:50,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:35:50,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1524557958, now seen corresponding path program 1 times [2024-11-24 01:35:50,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:35:50,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203911488] [2024-11-24 01:35:50,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:35:50,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:35:55,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:35:57,552 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 448 trivial. 0 not checked. [2024-11-24 01:35:57,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:35:57,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203911488] [2024-11-24 01:35:57,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203911488] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:35:57,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701600520] [2024-11-24 01:35:57,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:35:57,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:35:57,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:35:57,555 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:35:57,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 01:36:04,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:36:04,687 INFO L256 TraceCheckSpWp]: Trace formula consists of 4681 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-24 01:36:04,695 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:36:05,410 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 11 treesize of output 7 [2024-11-24 01:36:17,234 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 334 proven. 14 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-24 01:36:17,234 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:36:22,184 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 8 treesize of output 4 [2024-11-24 01:36:22,415 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 28 treesize of output 24 [2024-11-24 01:36:23,273 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 443 trivial. 0 not checked. [2024-11-24 01:36:23,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701600520] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:36:23,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:36:23,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 20, 19] total 33 [2024-11-24 01:36:23,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652076595] [2024-11-24 01:36:23,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:36:23,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-24 01:36:23,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:36:23,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-24 01:36:23,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=952, Unknown=0, NotChecked=0, Total=1056 [2024-11-24 01:36:23,277 INFO L87 Difference]: Start difference. First operand 362 states and 478 transitions. Second operand has 33 states, 28 states have (on average 6.678571428571429) internal successors, (187), 31 states have internal predecessors, (187), 16 states have call successors, (87), 5 states have call predecessors, (87), 11 states have return successors, (84), 14 states have call predecessors, (84), 15 states have call successors, (84) [2024-11-24 01:36:40,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:36:40,304 INFO L93 Difference]: Finished difference Result 659 states and 895 transitions. [2024-11-24 01:36:40,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-24 01:36:40,305 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 28 states have (on average 6.678571428571429) internal successors, (187), 31 states have internal predecessors, (187), 16 states have call successors, (87), 5 states have call predecessors, (87), 11 states have return successors, (84), 14 states have call predecessors, (84), 15 states have call successors, (84) Word has length 220 [2024-11-24 01:36:40,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:36:40,309 INFO L225 Difference]: With dead ends: 659 [2024-11-24 01:36:40,309 INFO L226 Difference]: Without dead ends: 374 [2024-11-24 01:36:40,311 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 384 SyntacticMatches, 31 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=151, Invalid=1409, Unknown=0, NotChecked=0, Total=1560 [2024-11-24 01:36:40,312 INFO L435 NwaCegarLoop]: 399 mSDtfsCounter, 347 mSDsluCounter, 6965 mSDsCounter, 0 mSdLazyCounter, 2127 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 7364 SdHoareTripleChecker+Invalid, 2159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:36:40,312 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 7364 Invalid, 2159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2127 Invalid, 0 Unknown, 0 Unchecked, 15.3s Time] [2024-11-24 01:36:40,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2024-11-24 01:36:40,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 364. [2024-11-24 01:36:40,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 241 states have (on average 1.2199170124481329) internal successors, (294), 244 states have internal predecessors, (294), 88 states have call successors, (88), 32 states have call predecessors, (88), 34 states have return successors, (96), 87 states have call predecessors, (96), 86 states have call successors, (96) [2024-11-24 01:36:40,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 478 transitions. [2024-11-24 01:36:40,351 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 478 transitions. Word has length 220 [2024-11-24 01:36:40,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:36:40,351 INFO L471 AbstractCegarLoop]: Abstraction has 364 states and 478 transitions. [2024-11-24 01:36:40,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 28 states have (on average 6.678571428571429) internal successors, (187), 31 states have internal predecessors, (187), 16 states have call successors, (87), 5 states have call predecessors, (87), 11 states have return successors, (84), 14 states have call predecessors, (84), 15 states have call successors, (84) [2024-11-24 01:36:40,352 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 478 transitions. [2024-11-24 01:36:40,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2024-11-24 01:36:40,354 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:36:40,354 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:36:40,379 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-24 01:36:40,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-24 01:36:40,555 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:36:40,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:36:40,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1782180730, now seen corresponding path program 1 times [2024-11-24 01:36:40,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:36:40,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339401469] [2024-11-24 01:36:40,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:36:40,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:36:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:36:50,775 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2024-11-24 01:36:50,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:36:50,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339401469] [2024-11-24 01:36:50,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339401469] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:36:50,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:36:50,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-24 01:36:50,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939152646] [2024-11-24 01:36:50,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:36:50,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:36:50,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:36:50,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:36:50,777 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:36:50,778 INFO L87 Difference]: Start difference. First operand 364 states and 478 transitions. Second operand has 11 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 5 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (34), 5 states have call predecessors, (34), 5 states have call successors, (34) [2024-11-24 01:36:54,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:36:54,560 INFO L93 Difference]: Finished difference Result 630 states and 843 transitions. [2024-11-24 01:36:54,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:36:54,561 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 5 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (34), 5 states have call predecessors, (34), 5 states have call successors, (34) Word has length 234 [2024-11-24 01:36:54,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:36:54,565 INFO L225 Difference]: With dead ends: 630 [2024-11-24 01:36:54,565 INFO L226 Difference]: Without dead ends: 374 [2024-11-24 01:36:54,567 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2024-11-24 01:36:54,568 INFO L435 NwaCegarLoop]: 425 mSDtfsCounter, 65 mSDsluCounter, 3010 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 3435 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:36:54,568 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 3435 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-24 01:36:54,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2024-11-24 01:36:54,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 364. [2024-11-24 01:36:54,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 241 states have (on average 1.2157676348547717) internal successors, (293), 244 states have internal predecessors, (293), 88 states have call successors, (88), 32 states have call predecessors, (88), 34 states have return successors, (96), 87 states have call predecessors, (96), 86 states have call successors, (96) [2024-11-24 01:36:54,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 477 transitions. [2024-11-24 01:36:54,605 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 477 transitions. Word has length 234 [2024-11-24 01:36:54,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:36:54,605 INFO L471 AbstractCegarLoop]: Abstraction has 364 states and 477 transitions. [2024-11-24 01:36:54,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 5 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (34), 5 states have call predecessors, (34), 5 states have call successors, (34) [2024-11-24 01:36:54,605 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 477 transitions. [2024-11-24 01:36:54,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2024-11-24 01:36:54,608 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:36:54,608 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:36:54,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 01:36:54,608 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:36:54,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:36:54,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1833514312, now seen corresponding path program 1 times [2024-11-24 01:36:54,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:36:54,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665452917] [2024-11-24 01:36:54,609 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:36:54,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:36:59,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:37:00,746 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2024-11-24 01:37:00,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:37:00,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665452917] [2024-11-24 01:37:00,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665452917] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:37:00,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:37:00,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 01:37:00,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334911377] [2024-11-24 01:37:00,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:37:00,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:37:00,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:37:00,748 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:37:00,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:37:00,749 INFO L87 Difference]: Start difference. First operand 364 states and 477 transitions. Second operand has 6 states, 5 states have (on average 17.0) internal successors, (85), 6 states have internal predecessors, (85), 4 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (34), 3 states have call predecessors, (34), 4 states have call successors, (34) [2024-11-24 01:37:01,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:37:01,492 INFO L93 Difference]: Finished difference Result 617 states and 821 transitions. [2024-11-24 01:37:01,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:37:01,493 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.0) internal successors, (85), 6 states have internal predecessors, (85), 4 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (34), 3 states have call predecessors, (34), 4 states have call successors, (34) Word has length 234 [2024-11-24 01:37:01,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:37:01,497 INFO L225 Difference]: With dead ends: 617 [2024-11-24 01:37:01,497 INFO L226 Difference]: Without dead ends: 357 [2024-11-24 01:37:01,498 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:37:01,500 INFO L435 NwaCegarLoop]: 427 mSDtfsCounter, 61 mSDsluCounter, 1565 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 1992 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:37:01,500 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 1992 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 01:37:01,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2024-11-24 01:37:01,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2024-11-24 01:37:01,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 236 states have (on average 1.2118644067796611) internal successors, (286), 238 states have internal predecessors, (286), 87 states have call successors, (87), 32 states have call predecessors, (87), 33 states have return successors, (92), 86 states have call predecessors, (92), 85 states have call successors, (92) [2024-11-24 01:37:01,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 465 transitions. [2024-11-24 01:37:01,531 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 465 transitions. Word has length 234 [2024-11-24 01:37:01,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:37:01,535 INFO L471 AbstractCegarLoop]: Abstraction has 357 states and 465 transitions. [2024-11-24 01:37:01,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.0) internal successors, (85), 6 states have internal predecessors, (85), 4 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (34), 3 states have call predecessors, (34), 4 states have call successors, (34) [2024-11-24 01:37:01,535 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 465 transitions. [2024-11-24 01:37:01,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2024-11-24 01:37:01,537 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:37:01,537 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:37:01,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 01:37:01,537 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:37:01,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:37:01,538 INFO L85 PathProgramCache]: Analyzing trace with hash 220318264, now seen corresponding path program 1 times [2024-11-24 01:37:01,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:37:01,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019312148] [2024-11-24 01:37:01,538 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:37:01,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:37:07,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:37:09,658 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2024-11-24 01:37:09,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:37:09,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019312148] [2024-11-24 01:37:09,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019312148] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:37:09,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:37:09,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:37:09,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512363515] [2024-11-24 01:37:09,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:37:09,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:37:09,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:37:09,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:37:09,660 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:37:09,660 INFO L87 Difference]: Start difference. First operand 357 states and 465 transitions. Second operand has 5 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-24 01:37:10,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:37:10,158 INFO L93 Difference]: Finished difference Result 365 states and 473 transitions. [2024-11-24 01:37:10,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:37:10,159 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 247 [2024-11-24 01:37:10,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:37:10,163 INFO L225 Difference]: With dead ends: 365 [2024-11-24 01:37:10,163 INFO L226 Difference]: Without dead ends: 363 [2024-11-24 01:37:10,164 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:37:10,164 INFO L435 NwaCegarLoop]: 432 mSDtfsCounter, 3 mSDsluCounter, 1273 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1705 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:37:10,165 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1705 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 01:37:10,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2024-11-24 01:37:10,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 362. [2024-11-24 01:37:10,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 239 states have (on average 1.209205020920502) internal successors, (289), 242 states have internal predecessors, (289), 88 states have call successors, (88), 33 states have call predecessors, (88), 34 states have return successors, (93), 86 states have call predecessors, (93), 86 states have call successors, (93) [2024-11-24 01:37:10,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 470 transitions. [2024-11-24 01:37:10,202 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 470 transitions. Word has length 247 [2024-11-24 01:37:10,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:37:10,202 INFO L471 AbstractCegarLoop]: Abstraction has 362 states and 470 transitions. [2024-11-24 01:37:10,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-24 01:37:10,203 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 470 transitions. [2024-11-24 01:37:10,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2024-11-24 01:37:10,205 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:37:10,205 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:37:10,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 01:37:10,205 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:37:10,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:37:10,206 INFO L85 PathProgramCache]: Analyzing trace with hash 222165306, now seen corresponding path program 1 times [2024-11-24 01:37:10,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:37:10,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217707623] [2024-11-24 01:37:10,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:37:10,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:37:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:37:17,655 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2024-11-24 01:37:17,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:37:17,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217707623] [2024-11-24 01:37:17,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217707623] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:37:17,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:37:17,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:37:17,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453833654] [2024-11-24 01:37:17,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:37:17,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:37:17,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:37:17,657 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:37:17,658 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:37:17,658 INFO L87 Difference]: Start difference. First operand 362 states and 470 transitions. Second operand has 5 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-24 01:37:18,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:37:18,010 INFO L93 Difference]: Finished difference Result 368 states and 475 transitions. [2024-11-24 01:37:18,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:37:18,011 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 247 [2024-11-24 01:37:18,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:37:18,015 INFO L225 Difference]: With dead ends: 368 [2024-11-24 01:37:18,015 INFO L226 Difference]: Without dead ends: 366 [2024-11-24 01:37:18,015 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:37:18,016 INFO L435 NwaCegarLoop]: 432 mSDtfsCounter, 3 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:37:18,017 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1704 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 01:37:18,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2024-11-24 01:37:18,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 361. [2024-11-24 01:37:18,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 239 states have (on average 1.209205020920502) internal successors, (289), 241 states have internal predecessors, (289), 87 states have call successors, (87), 33 states have call predecessors, (87), 34 states have return successors, (92), 86 states have call predecessors, (92), 85 states have call successors, (92) [2024-11-24 01:37:18,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 468 transitions. [2024-11-24 01:37:18,052 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 468 transitions. Word has length 247 [2024-11-24 01:37:18,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:37:18,053 INFO L471 AbstractCegarLoop]: Abstraction has 361 states and 468 transitions. [2024-11-24 01:37:18,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-24 01:37:18,053 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 468 transitions. [2024-11-24 01:37:18,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-24 01:37:18,056 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:37:18,056 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:37:18,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 01:37:18,056 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:37:18,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:37:18,057 INFO L85 PathProgramCache]: Analyzing trace with hash -708478128, now seen corresponding path program 1 times [2024-11-24 01:37:18,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:37:18,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465157810] [2024-11-24 01:37:18,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:37:18,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:37:23,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:37:24,110 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2024-11-24 01:37:24,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:37:24,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465157810] [2024-11-24 01:37:24,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465157810] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:37:24,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:37:24,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:37:24,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276570646] [2024-11-24 01:37:24,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:37:24,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:37:24,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:37:24,112 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:37:24,112 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:37:24,113 INFO L87 Difference]: Start difference. First operand 361 states and 468 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2024-11-24 01:37:24,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:37:24,275 INFO L93 Difference]: Finished difference Result 514 states and 667 transitions. [2024-11-24 01:37:24,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:37:24,276 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 270 [2024-11-24 01:37:24,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:37:24,279 INFO L225 Difference]: With dead ends: 514 [2024-11-24 01:37:24,280 INFO L226 Difference]: Without dead ends: 361 [2024-11-24 01:37:24,281 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:37:24,281 INFO L435 NwaCegarLoop]: 428 mSDtfsCounter, 10 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:37:24,282 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1266 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:37:24,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2024-11-24 01:37:24,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2024-11-24 01:37:24,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 239 states have (on average 1.200836820083682) internal successors, (287), 241 states have internal predecessors, (287), 87 states have call successors, (87), 33 states have call predecessors, (87), 34 states have return successors, (92), 86 states have call predecessors, (92), 85 states have call successors, (92) [2024-11-24 01:37:24,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 466 transitions. [2024-11-24 01:37:24,319 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 466 transitions. Word has length 270 [2024-11-24 01:37:24,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:37:24,320 INFO L471 AbstractCegarLoop]: Abstraction has 361 states and 466 transitions. [2024-11-24 01:37:24,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2024-11-24 01:37:24,321 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 466 transitions. [2024-11-24 01:37:24,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-24 01:37:24,323 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:37:24,323 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:37:24,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 01:37:24,323 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:37:24,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:37:24,325 INFO L85 PathProgramCache]: Analyzing trace with hash -6878254, now seen corresponding path program 1 times [2024-11-24 01:37:24,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:37:24,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365924678] [2024-11-24 01:37:24,326 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:37:24,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:37:32,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:37:35,093 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 3 proven. 54 refuted. 0 times theorem prover too weak. 558 trivial. 0 not checked. [2024-11-24 01:37:35,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:37:35,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365924678] [2024-11-24 01:37:35,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365924678] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:37:35,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879161538] [2024-11-24 01:37:35,093 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:37:35,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:37:35,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:37:35,095 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:37:35,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 01:37:43,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:37:43,793 INFO L256 TraceCheckSpWp]: Trace formula consists of 4974 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-24 01:37:43,804 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:37:46,424 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 373 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2024-11-24 01:37:46,424 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:37:46,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879161538] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:37:46,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:37:46,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [7] total 18 [2024-11-24 01:37:46,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572489630] [2024-11-24 01:37:46,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:37:46,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-24 01:37:46,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:37:46,427 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-24 01:37:46,428 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2024-11-24 01:37:46,428 INFO L87 Difference]: Start difference. First operand 361 states and 466 transitions. Second operand has 14 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 5 states have call successors, (39), 2 states have call predecessors, (39), 6 states have return successors, (39), 5 states have call predecessors, (39), 5 states have call successors, (39) [2024-11-24 01:37:52,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:37:52,838 INFO L93 Difference]: Finished difference Result 632 states and 837 transitions. [2024-11-24 01:37:52,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-24 01:37:52,838 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 5 states have call successors, (39), 2 states have call predecessors, (39), 6 states have return successors, (39), 5 states have call predecessors, (39), 5 states have call successors, (39) Word has length 270 [2024-11-24 01:37:52,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:37:52,841 INFO L225 Difference]: With dead ends: 632 [2024-11-24 01:37:52,841 INFO L226 Difference]: Without dead ends: 376 [2024-11-24 01:37:52,842 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2024-11-24 01:37:52,843 INFO L435 NwaCegarLoop]: 405 mSDtfsCounter, 40 mSDsluCounter, 4113 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 4518 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2024-11-24 01:37:52,843 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 4518 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2024-11-24 01:37:52,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2024-11-24 01:37:52,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 371. [2024-11-24 01:37:52,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 246 states have (on average 1.1951219512195121) internal successors, (294), 249 states have internal predecessors, (294), 87 states have call successors, (87), 33 states have call predecessors, (87), 37 states have return successors, (106), 88 states have call predecessors, (106), 85 states have call successors, (106) [2024-11-24 01:37:52,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 487 transitions. [2024-11-24 01:37:52,878 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 487 transitions. Word has length 270 [2024-11-24 01:37:52,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:37:52,878 INFO L471 AbstractCegarLoop]: Abstraction has 371 states and 487 transitions. [2024-11-24 01:37:52,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 5 states have call successors, (39), 2 states have call predecessors, (39), 6 states have return successors, (39), 5 states have call predecessors, (39), 5 states have call successors, (39) [2024-11-24 01:37:52,879 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 487 transitions. [2024-11-24 01:37:52,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-11-24 01:37:52,880 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:37:52,881 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:37:52,913 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-24 01:37:53,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:37:53,081 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:37:53,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:37:53,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1422573271, now seen corresponding path program 1 times [2024-11-24 01:37:53,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:37:53,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341574304] [2024-11-24 01:37:53,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:37:53,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:38:01,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:38:04,823 INFO L134 CoverageAnalysis]: Checked inductivity of 621 backedges. 3 proven. 54 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2024-11-24 01:38:04,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:38:04,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341574304] [2024-11-24 01:38:04,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341574304] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:38:04,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245459525] [2024-11-24 01:38:04,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:38:04,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:38:04,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:38:04,831 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:38:04,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 01:38:13,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:38:13,316 INFO L256 TraceCheckSpWp]: Trace formula consists of 4986 conjuncts, 94 conjuncts are in the unsatisfiable core [2024-11-24 01:38:13,327 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:38:14,141 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 [2024-11-24 01:38:14,154 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 11 treesize of output 7 [2024-11-24 01:38:25,861 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 22 treesize of output 14 [2024-11-24 01:38:30,715 INFO L134 CoverageAnalysis]: Checked inductivity of 621 backedges. 399 proven. 73 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2024-11-24 01:38:30,715 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:38:34,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245459525] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:38:34,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 01:38:34,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 28] total 33 [2024-11-24 01:38:34,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913794729] [2024-11-24 01:38:34,970 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 01:38:34,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-24 01:38:34,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:38:34,971 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-24 01:38:34,972 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1295, Unknown=0, NotChecked=0, Total=1406 [2024-11-24 01:38:34,972 INFO L87 Difference]: Start difference. First operand 371 states and 487 transitions. Second operand has 33 states, 26 states have (on average 7.730769230769231) internal successors, (201), 30 states have internal predecessors, (201), 14 states have call successors, (72), 6 states have call predecessors, (72), 14 states have return successors, (71), 12 states have call predecessors, (71), 14 states have call successors, (71) [2024-11-24 01:38:40,555 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] [2024-11-24 01:38:53,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:38:58,417 WARN L539 Checker$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] [2024-11-24 01:39:02,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:39:07,473 WARN L539 Checker$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] [2024-11-24 01:39:12,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:39:16,542 WARN L539 Checker$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] [2024-11-24 01:39:21,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:39:34,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:40:18,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:40:26,942 WARN L539 Checker$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] [2024-11-24 01:40:32,261 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] [2024-11-24 01:40:45,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:40:45,158 INFO L93 Difference]: Finished difference Result 1117 states and 1474 transitions. [2024-11-24 01:40:45,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-11-24 01:40:45,159 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 26 states have (on average 7.730769230769231) internal successors, (201), 30 states have internal predecessors, (201), 14 states have call successors, (72), 6 states have call predecessors, (72), 14 states have return successors, (71), 12 states have call predecessors, (71), 14 states have call successors, (71) Word has length 276 [2024-11-24 01:40:45,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:40:45,166 INFO L225 Difference]: With dead ends: 1117 [2024-11-24 01:40:45,166 INFO L226 Difference]: Without dead ends: 761 [2024-11-24 01:40:45,171 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 278 SyntacticMatches, 32 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2221 ImplicationChecksByTransitivity, 34.5s TimeCoverageRelationStatistics Valid=713, Invalid=8793, Unknown=0, NotChecked=0, Total=9506 [2024-11-24 01:40:45,172 INFO L435 NwaCegarLoop]: 486 mSDtfsCounter, 1254 mSDsluCounter, 9796 mSDsCounter, 0 mSdLazyCounter, 7208 mSolverCounterSat, 633 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 108.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1274 SdHoareTripleChecker+Valid, 10282 SdHoareTripleChecker+Invalid, 7853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 633 IncrementalHoareTripleChecker+Valid, 7208 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 109.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:40:45,172 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1274 Valid, 10282 Invalid, 7853 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [633 Valid, 7208 Invalid, 12 Unknown, 0 Unchecked, 109.4s Time] [2024-11-24 01:40:45,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2024-11-24 01:40:45,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 692. [2024-11-24 01:40:45,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 464 states have (on average 1.1961206896551724) internal successors, (555), 470 states have internal predecessors, (555), 159 states have call successors, (159), 67 states have call predecessors, (159), 68 states have return successors, (189), 154 states have call predecessors, (189), 153 states have call successors, (189) [2024-11-24 01:40:45,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 903 transitions. [2024-11-24 01:40:45,309 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 903 transitions. Word has length 276 [2024-11-24 01:40:45,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:40:45,310 INFO L471 AbstractCegarLoop]: Abstraction has 692 states and 903 transitions. [2024-11-24 01:40:45,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 26 states have (on average 7.730769230769231) internal successors, (201), 30 states have internal predecessors, (201), 14 states have call successors, (72), 6 states have call predecessors, (72), 14 states have return successors, (71), 12 states have call predecessors, (71), 14 states have call successors, (71) [2024-11-24 01:40:45,310 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 903 transitions. [2024-11-24 01:40:45,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2024-11-24 01:40:45,314 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:40:45,314 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:40:45,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-24 01:40:45,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:40:45,515 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:40:45,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:40:45,515 INFO L85 PathProgramCache]: Analyzing trace with hash -137798155, now seen corresponding path program 1 times [2024-11-24 01:40:45,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:40:45,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731704718] [2024-11-24 01:40:45,516 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:40:45,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:40:50,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:40:54,479 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 668 trivial. 0 not checked. [2024-11-24 01:40:54,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:40:54,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731704718] [2024-11-24 01:40:54,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731704718] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:40:54,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:40:54,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-24 01:40:54,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702978464] [2024-11-24 01:40:54,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:40:54,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 01:40:54,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:40:54,481 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 01:40:54,481 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:40:54,481 INFO L87 Difference]: Start difference. First operand 692 states and 903 transitions. Second operand has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 9 states have internal predecessors, (94), 6 states have call successors, (40), 5 states have call predecessors, (40), 2 states have return successors, (35), 4 states have call predecessors, (35), 3 states have call successors, (35) [2024-11-24 01:40:56,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:40:56,272 INFO L93 Difference]: Finished difference Result 1341 states and 1799 transitions. [2024-11-24 01:40:56,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 01:40:56,273 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 9 states have internal predecessors, (94), 6 states have call successors, (40), 5 states have call predecessors, (40), 2 states have return successors, (35), 4 states have call predecessors, (35), 3 states have call successors, (35) Word has length 287 [2024-11-24 01:40:56,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:40:56,278 INFO L225 Difference]: With dead ends: 1341 [2024-11-24 01:40:56,278 INFO L226 Difference]: Without dead ends: 852 [2024-11-24 01:40:56,281 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2024-11-24 01:40:56,282 INFO L435 NwaCegarLoop]: 436 mSDtfsCounter, 112 mSDsluCounter, 4328 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 4764 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:40:56,282 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 4764 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-24 01:40:56,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2024-11-24 01:40:56,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 804. [2024-11-24 01:40:56,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 552 states have (on average 1.2228260869565217) internal successors, (675), 560 states have internal predecessors, (675), 175 states have call successors, (175), 73 states have call predecessors, (175), 76 states have return successors, (218), 170 states have call predecessors, (218), 169 states have call successors, (218) [2024-11-24 01:40:56,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1068 transitions. [2024-11-24 01:40:56,408 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 1068 transitions. Word has length 287 [2024-11-24 01:40:56,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:40:56,409 INFO L471 AbstractCegarLoop]: Abstraction has 804 states and 1068 transitions. [2024-11-24 01:40:56,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 9 states have internal predecessors, (94), 6 states have call successors, (40), 5 states have call predecessors, (40), 2 states have return successors, (35), 4 states have call predecessors, (35), 3 states have call successors, (35) [2024-11-24 01:40:56,410 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 1068 transitions. [2024-11-24 01:40:56,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-11-24 01:40:56,413 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:40:56,413 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:40:56,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-24 01:40:56,413 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:40:56,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:40:56,414 INFO L85 PathProgramCache]: Analyzing trace with hash -267252897, now seen corresponding path program 1 times [2024-11-24 01:40:56,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:40:56,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357827670] [2024-11-24 01:40:56,414 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:40:56,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:41:01,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:41:04,986 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 25 proven. 8 refuted. 0 times theorem prover too weak. 614 trivial. 0 not checked. [2024-11-24 01:41:04,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:41:04,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357827670] [2024-11-24 01:41:04,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357827670] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:41:04,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300773949] [2024-11-24 01:41:04,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:41:04,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:41:04,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:41:04,990 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:41:04,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-24 01:41:13,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:41:13,297 INFO L256 TraceCheckSpWp]: Trace formula consists of 4985 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-24 01:41:13,303 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:41:14,489 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 [2024-11-24 01:41:27,026 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 16 treesize of output 8 [2024-11-24 01:41:29,008 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 265 proven. 89 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2024-11-24 01:41:29,008 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:41:31,276 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 30 treesize of output 26 [2024-11-24 01:41:32,315 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2024-11-24 01:41:32,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300773949] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:41:32,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:41:32,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 14] total 28 [2024-11-24 01:41:32,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009834141] [2024-11-24 01:41:32,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:41:32,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-24 01:41:32,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:41:32,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-24 01:41:32,319 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=685, Unknown=0, NotChecked=0, Total=756 [2024-11-24 01:41:32,319 INFO L87 Difference]: Start difference. First operand 804 states and 1068 transitions. Second operand has 28 states, 25 states have (on average 6.88) internal successors, (172), 23 states have internal predecessors, (172), 15 states have call successors, (93), 7 states have call predecessors, (93), 8 states have return successors, (88), 11 states have call predecessors, (88), 12 states have call successors, (88) [2024-11-24 01:41:45,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:41:45,482 INFO L93 Difference]: Finished difference Result 1490 states and 2033 transitions. [2024-11-24 01:41:45,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-24 01:41:45,483 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 6.88) internal successors, (172), 23 states have internal predecessors, (172), 15 states have call successors, (93), 7 states have call predecessors, (93), 8 states have return successors, (88), 11 states have call predecessors, (88), 12 states have call successors, (88) Word has length 276 [2024-11-24 01:41:45,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:41:45,490 INFO L225 Difference]: With dead ends: 1490 [2024-11-24 01:41:45,490 INFO L226 Difference]: Without dead ends: 919 [2024-11-24 01:41:45,493 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 509 SyntacticMatches, 33 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=160, Invalid=1562, Unknown=0, NotChecked=0, Total=1722 [2024-11-24 01:41:45,494 INFO L435 NwaCegarLoop]: 387 mSDtfsCounter, 486 mSDsluCounter, 5015 mSDsCounter, 0 mSdLazyCounter, 1494 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 5402 SdHoareTripleChecker+Invalid, 1605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:41:45,494 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 5402 Invalid, 1605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1494 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2024-11-24 01:41:45,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2024-11-24 01:41:45,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 876. [2024-11-24 01:41:45,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 584 states have (on average 1.2106164383561644) internal successors, (707), 592 states have internal predecessors, (707), 209 states have call successors, (209), 77 states have call predecessors, (209), 82 states have return successors, (266), 206 states have call predecessors, (266), 203 states have call successors, (266) [2024-11-24 01:41:45,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1182 transitions. [2024-11-24 01:41:45,638 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1182 transitions. Word has length 276 [2024-11-24 01:41:45,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:41:45,638 INFO L471 AbstractCegarLoop]: Abstraction has 876 states and 1182 transitions. [2024-11-24 01:41:45,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 6.88) internal successors, (172), 23 states have internal predecessors, (172), 15 states have call successors, (93), 7 states have call predecessors, (93), 8 states have return successors, (88), 11 states have call predecessors, (88), 12 states have call successors, (88) [2024-11-24 01:41:45,639 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1182 transitions. [2024-11-24 01:41:45,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2024-11-24 01:41:45,642 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:41:45,642 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:41:45,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-24 01:41:45,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-24 01:41:45,843 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:41:45,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:41:45,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1416965276, now seen corresponding path program 2 times [2024-11-24 01:41:45,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:41:45,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78254784] [2024-11-24 01:41:45,846 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:41:45,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:42:01,044 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:42:01,045 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:42:02,561 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2024-11-24 01:42:02,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:42:02,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78254784] [2024-11-24 01:42:02,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78254784] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:42:02,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305167361] [2024-11-24 01:42:02,562 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:42:02,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:42:02,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:42:02,563 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:42:02,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586f54eb-e486-4451-8e91-d92c37da1bfc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process