./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46dcf593-6603-4c17-9a8e-7998fff6e460/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46dcf593-6603-4c17-9a8e-7998fff6e460/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46dcf593-6603-4c17-9a8e-7998fff6e460/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46dcf593-6603-4c17-9a8e-7998fff6e460/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46dcf593-6603-4c17-9a8e-7998fff6e460/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46dcf593-6603-4c17-9a8e-7998fff6e460/bin/uautomizer-verify-84ZbGMXZE1 --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 179a1ffc86769a00f66e166b0105235f9f4d772a412ed21eb988649ef2cb5874 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 08:51:41,327 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 08:51:41,382 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46dcf593-6603-4c17-9a8e-7998fff6e460/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-12-02 08:51:41,387 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 08:51:41,388 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 08:51:41,408 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 08:51:41,409 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 08:51:41,409 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 08:51:41,409 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 08:51:41,409 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 08:51:41,409 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 08:51:41,409 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 08:51:41,410 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 08:51:41,410 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 08:51:41,410 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 08:51:41,410 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 08:51:41,410 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 08:51:41,410 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 08:51:41,410 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 08:51:41,410 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 08:51:41,410 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 08:51:41,411 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 08:51:41,411 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 08:51:41,411 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 08:51:41,411 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 08:51:41,411 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 08:51:41,411 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:51:41,411 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:51:41,411 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:51:41,411 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:51:41,411 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 08:51:41,411 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:51:41,411 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:51:41,412 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:51:41,412 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:51:41,412 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 08:51:41,412 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 08:51:41,412 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 08:51:41,412 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 08:51:41,412 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 08:51:41,412 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 08:51:41,412 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 08:51:41,412 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 08:51:41,412 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 08:51:41,412 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 08:51:41,413 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_46dcf593-6603-4c17-9a8e-7998fff6e460/bin/uautomizer-verify-84ZbGMXZE1 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 -> 179a1ffc86769a00f66e166b0105235f9f4d772a412ed21eb988649ef2cb5874 [2024-12-02 08:51:41,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 08:51:41,675 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 08:51:41,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 08:51:41,679 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 08:51:41,679 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 08:51:41,680 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46dcf593-6603-4c17-9a8e-7998fff6e460/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness_negated.i [2024-12-02 08:51:44,365 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46dcf593-6603-4c17-9a8e-7998fff6e460/bin/uautomizer-verify-84ZbGMXZE1/data/e21a0321f/e354d38bb08e40e98d258f7b65b2bc2c/FLAG758487224 [2024-12-02 08:51:44,775 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 08:51:44,775 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46dcf593-6603-4c17-9a8e-7998fff6e460/sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness_negated.i [2024-12-02 08:51:44,805 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46dcf593-6603-4c17-9a8e-7998fff6e460/bin/uautomizer-verify-84ZbGMXZE1/data/e21a0321f/e354d38bb08e40e98d258f7b65b2bc2c/FLAG758487224 [2024-12-02 08:51:44,820 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46dcf593-6603-4c17-9a8e-7998fff6e460/bin/uautomizer-verify-84ZbGMXZE1/data/e21a0321f/e354d38bb08e40e98d258f7b65b2bc2c [2024-12-02 08:51:44,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 08:51:44,824 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 08:51:44,825 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 08:51:44,825 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 08:51:44,831 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 08:51:44,831 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:51:44" (1/1) ... [2024-12-02 08:51:44,832 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d683efe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:51:44, skipping insertion in model container [2024-12-02 08:51:44,832 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:51:44" (1/1) ... [2024-12-02 08:51:44,910 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 08:51:45,133 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_46dcf593-6603-4c17-9a8e-7998fff6e460/sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness_negated.i[4503,4516] [2024-12-02 08:51:45,140 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_46dcf593-6603-4c17-9a8e-7998fff6e460/sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness_negated.i[4563,4576] [2024-12-02 08:51:46,034 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:46,035 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:46,036 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:46,036 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:46,037 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:46,053 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:46,053 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:46,055 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:46,056 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:46,057 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:46,058 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:46,059 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:46,059 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:46,981 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:46,982 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:47,002 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:47,003 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:47,008 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:47,009 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:47,020 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:47,021 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:47,022 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:47,022 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:47,022 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:47,022 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:47,022 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:47,048 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_46dcf593-6603-4c17-9a8e-7998fff6e460/sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness_negated.i[228209,228222] [2024-12-02 08:51:47,049 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:51:47,075 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 08:51:47,087 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_46dcf593-6603-4c17-9a8e-7998fff6e460/sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness_negated.i[4503,4516] [2024-12-02 08:51:47,087 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_46dcf593-6603-4c17-9a8e-7998fff6e460/sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness_negated.i[4563,4576] [2024-12-02 08:51:47,119 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:47,120 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:47,120 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:47,120 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:47,121 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:47,126 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:47,126 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:47,127 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:47,127 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:47,128 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:47,129 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:47,129 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:47,129 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:47,205 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7544-7555] [2024-12-02 08:51:47,260 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:47,261 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:47,267 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:47,268 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:47,270 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:47,270 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:47,277 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:47,278 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:47,278 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:47,279 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:47,279 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:47,279 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:47,279 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:51:47,293 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_46dcf593-6603-4c17-9a8e-7998fff6e460/sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness_negated.i[228209,228222] [2024-12-02 08:51:47,293 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:51:47,459 INFO L204 MainTranslator]: Completed translation [2024-12-02 08:51:47,460 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:51:47 WrapperNode [2024-12-02 08:51:47,460 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 08:51:47,461 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 08:51:47,461 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 08:51:47,461 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 08:51:47,466 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:51:47" (1/1) ... [2024-12-02 08:51:47,525 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:51:47" (1/1) ... [2024-12-02 08:51:47,581 INFO L138 Inliner]: procedures = 764, calls = 2425, calls flagged for inlining = 66, calls inlined = 11, statements flattened = 831 [2024-12-02 08:51:47,581 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 08:51:47,582 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 08:51:47,582 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 08:51:47,582 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 08:51:47,591 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:51:47" (1/1) ... [2024-12-02 08:51:47,591 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:51:47" (1/1) ... [2024-12-02 08:51:47,600 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:51:47" (1/1) ... [2024-12-02 08:51:47,608 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2024-12-02 08:51:47,609 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:51:47" (1/1) ... [2024-12-02 08:51:47,609 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:51:47" (1/1) ... [2024-12-02 08:51:47,640 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:51:47" (1/1) ... [2024-12-02 08:51:47,643 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:51:47" (1/1) ... [2024-12-02 08:51:47,648 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:51:47" (1/1) ... [2024-12-02 08:51:47,657 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:51:47" (1/1) ... [2024-12-02 08:51:47,661 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:51:47" (1/1) ... [2024-12-02 08:51:47,672 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 08:51:47,672 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 08:51:47,673 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 08:51:47,673 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 08:51:47,674 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:51:47" (1/1) ... [2024-12-02 08:51:47,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:51:47,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46dcf593-6603-4c17-9a8e-7998fff6e460/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:51:47,706 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46dcf593-6603-4c17-9a8e-7998fff6e460/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 08:51:47,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46dcf593-6603-4c17-9a8e-7998fff6e460/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 08:51:47,738 INFO L130 BoogieDeclarations]: Found specification of procedure s_update_template_size [2024-12-02 08:51:47,738 INFO L138 BoogieDeclarations]: Found implementation of procedure s_update_template_size [2024-12-02 08:51:47,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2024-12-02 08:51:47,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 08:51:47,738 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-12-02 08:51:47,738 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-12-02 08:51:47,738 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2024-12-02 08:51:47,738 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2024-12-02 08:51:47,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-12-02 08:51:47,738 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_calloc [2024-12-02 08:51:47,738 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_calloc [2024-12-02 08:51:47,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-12-02 08:51:47,739 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-12-02 08:51:47,739 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-12-02 08:51:47,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-12-02 08:51:47,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-12-02 08:51:47,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2024-12-02 08:51:47,739 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2024-12-02 08:51:47,739 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2024-12-02 08:51:47,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 08:51:47,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 08:51:47,739 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2024-12-02 08:51:47,739 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2024-12-02 08:51:47,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-12-02 08:51:47,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 08:51:47,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 08:51:47,739 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2024-12-02 08:51:47,739 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2024-12-02 08:51:47,740 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2024-12-02 08:51:47,740 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2024-12-02 08:51:47,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-12-02 08:51:47,740 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 08:51:47,740 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 08:51:47,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 08:51:47,740 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2024-12-02 08:51:47,740 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2024-12-02 08:51:47,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-12-02 08:51:47,740 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2024-12-02 08:51:47,740 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2024-12-02 08:51:47,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-12-02 08:51:47,740 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-12-02 08:51:47,740 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-12-02 08:51:47,740 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2024-12-02 08:51:47,740 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2024-12-02 08:51:47,740 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2024-12-02 08:51:47,741 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2024-12-02 08:51:47,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-12-02 08:51:47,741 INFO L130 BoogieDeclarations]: Found specification of procedure s_alloc_state [2024-12-02 08:51:47,741 INFO L138 BoogieDeclarations]: Found implementation of procedure s_alloc_state [2024-12-02 08:51:47,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-12-02 08:51:47,741 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2024-12-02 08:51:47,741 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2024-12-02 08:51:48,001 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 08:51:48,003 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 08:51:48,565 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-12-02 08:51:53,810 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume false; [2024-12-02 08:51:53,810 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !false; [2024-12-02 08:51:53,891 INFO L? ?]: Removed 174 outVars from TransFormulas that were not future-live. [2024-12-02 08:51:53,891 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 08:51:53,901 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 08:51:53,901 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-12-02 08:51:53,902 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:51:53 BoogieIcfgContainer [2024-12-02 08:51:53,902 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 08:51:53,904 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 08:51:53,904 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 08:51:53,909 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 08:51:53,909 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:51:44" (1/3) ... [2024-12-02 08:51:53,909 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a2b632 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:51:53, skipping insertion in model container [2024-12-02 08:51:53,910 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:51:47" (2/3) ... [2024-12-02 08:51:53,910 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a2b632 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:51:53, skipping insertion in model container [2024-12-02 08:51:53,910 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:51:53" (3/3) ... [2024-12-02 08:51:53,911 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_hash_table_init_unbounded_harness_negated.i [2024-12-02 08:51:53,924 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 08:51:53,926 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_hash_table_init_unbounded_harness_negated.i that has 19 procedures, 191 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 08:51:53,979 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 08:51:53,990 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;@40f66948, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 08:51:53,990 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 08:51:53,994 INFO L276 IsEmpty]: Start isEmpty. Operand has 191 states, 137 states have (on average 1.2773722627737227) internal successors, (175), 137 states have internal predecessors, (175), 35 states have call successors, (35), 18 states have call predecessors, (35), 18 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-12-02 08:51:54,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-12-02 08:51:54,003 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:51:54,004 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:51:54,004 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:51:54,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:51:54,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1734843285, now seen corresponding path program 1 times [2024-12-02 08:51:54,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:51:54,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276269411] [2024-12-02 08:51:54,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:51:54,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:51:59,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:51:59,896 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-12-02 08:51:59,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:51:59,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276269411] [2024-12-02 08:51:59,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276269411] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:51:59,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877032260] [2024-12-02 08:51:59,897 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:51:59,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:51:59,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46dcf593-6603-4c17-9a8e-7998fff6e460/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:51:59,900 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46dcf593-6603-4c17-9a8e-7998fff6e460/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:51:59,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46dcf593-6603-4c17-9a8e-7998fff6e460/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 08:52:05,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:52:05,308 INFO L256 TraceCheckSpWp]: Trace formula consists of 4093 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 08:52:05,316 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:52:05,328 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-12-02 08:52:05,328 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:52:05,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877032260] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:52:05,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 08:52:05,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 08:52:05,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647916584] [2024-12-02 08:52:05,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:52:05,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 08:52:05,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:52:05,345 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 08:52:05,346 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 08:52:05,347 INFO L87 Difference]: Start difference. First operand has 191 states, 137 states have (on average 1.2773722627737227) internal successors, (175), 137 states have internal predecessors, (175), 35 states have call successors, (35), 18 states have call predecessors, (35), 18 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 08:52:05,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:52:05,380 INFO L93 Difference]: Finished difference Result 371 states and 495 transitions. [2024-12-02 08:52:05,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 08:52:05,381 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 70 [2024-12-02 08:52:05,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:52:05,388 INFO L225 Difference]: With dead ends: 371 [2024-12-02 08:52:05,388 INFO L226 Difference]: Without dead ends: 184 [2024-12-02 08:52:05,391 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 08:52:05,394 INFO L435 NwaCegarLoop]: 240 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, 240 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 [2024-12-02 08:52:05,394 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:52:05,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-12-02 08:52:05,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2024-12-02 08:52:05,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 130 states have (on average 1.2615384615384615) internal successors, (164), 131 states have internal predecessors, (164), 35 states have call successors, (35), 18 states have call predecessors, (35), 18 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-12-02 08:52:05,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 233 transitions. [2024-12-02 08:52:05,433 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 233 transitions. Word has length 70 [2024-12-02 08:52:05,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:52:05,434 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 233 transitions. [2024-12-02 08:52:05,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 08:52:05,434 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 233 transitions. [2024-12-02 08:52:05,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-12-02 08:52:05,436 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:52:05,437 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:52:05,448 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46dcf593-6603-4c17-9a8e-7998fff6e460/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 08:52:05,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46dcf593-6603-4c17-9a8e-7998fff6e460/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:52:05,637 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:52:05,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:52:05,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1662150887, now seen corresponding path program 1 times [2024-12-02 08:52:05,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:52:05,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310777563] [2024-12-02 08:52:05,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:52:05,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:52:10,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:52:11,730 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-12-02 08:52:11,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:52:11,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310777563] [2024-12-02 08:52:11,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310777563] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:52:11,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:52:11,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:52:11,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299398782] [2024-12-02 08:52:11,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:52:11,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:52:11,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:52:11,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:52:11,732 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:52:11,733 INFO L87 Difference]: Start difference. First operand 184 states and 233 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 08:52:11,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:52:11,836 INFO L93 Difference]: Finished difference Result 316 states and 390 transitions. [2024-12-02 08:52:11,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:52:11,837 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 70 [2024-12-02 08:52:11,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:52:11,840 INFO L225 Difference]: With dead ends: 316 [2024-12-02 08:52:11,840 INFO L226 Difference]: Without dead ends: 186 [2024-12-02 08:52:11,841 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 [2024-12-02 08:52:11,841 INFO L435 NwaCegarLoop]: 231 mSDtfsCounter, 0 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:52:11,842 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 688 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:52:11,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2024-12-02 08:52:11,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2024-12-02 08:52:11,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 132 states have (on average 1.2575757575757576) internal successors, (166), 133 states have internal predecessors, (166), 35 states have call successors, (35), 18 states have call predecessors, (35), 18 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-12-02 08:52:11,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 235 transitions. [2024-12-02 08:52:11,857 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 235 transitions. Word has length 70 [2024-12-02 08:52:11,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:52:11,857 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 235 transitions. [2024-12-02 08:52:11,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 08:52:11,857 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 235 transitions. [2024-12-02 08:52:11,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-12-02 08:52:11,859 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:52:11,859 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:52:11,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 08:52:11,859 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:52:11,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:52:11,860 INFO L85 PathProgramCache]: Analyzing trace with hash -475052884, now seen corresponding path program 1 times [2024-12-02 08:52:11,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:52:11,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414318018] [2024-12-02 08:52:11,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:52:11,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:52:16,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:52:17,320 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-12-02 08:52:17,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:52:17,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414318018] [2024-12-02 08:52:17,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414318018] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:52:17,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:52:17,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:52:17,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679512297] [2024-12-02 08:52:17,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:52:17,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:52:17,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:52:17,322 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:52:17,322 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:52:17,322 INFO L87 Difference]: Start difference. First operand 186 states and 235 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 08:52:17,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:52:17,432 INFO L93 Difference]: Finished difference Result 224 states and 278 transitions. [2024-12-02 08:52:17,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:52:17,432 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 72 [2024-12-02 08:52:17,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:52:17,435 INFO L225 Difference]: With dead ends: 224 [2024-12-02 08:52:17,435 INFO L226 Difference]: Without dead ends: 190 [2024-12-02 08:52:17,435 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 [2024-12-02 08:52:17,436 INFO L435 NwaCegarLoop]: 231 mSDtfsCounter, 0 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:52:17,436 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 688 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:52:17,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-12-02 08:52:17,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2024-12-02 08:52:17,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 135 states have (on average 1.2518518518518518) internal successors, (169), 136 states have internal predecessors, (169), 35 states have call successors, (35), 18 states have call predecessors, (35), 19 states have return successors, (35), 35 states have call predecessors, (35), 34 states have call successors, (35) [2024-12-02 08:52:17,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 239 transitions. [2024-12-02 08:52:17,450 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 239 transitions. Word has length 72 [2024-12-02 08:52:17,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:52:17,450 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 239 transitions. [2024-12-02 08:52:17,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 08:52:17,451 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 239 transitions. [2024-12-02 08:52:17,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-12-02 08:52:17,452 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:52:17,452 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:52:17,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 08:52:17,452 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:52:17,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:52:17,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1439224058, now seen corresponding path program 1 times [2024-12-02 08:52:17,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:52:17,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475820217] [2024-12-02 08:52:17,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:52:17,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:52:21,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:52:22,403 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-12-02 08:52:22,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:52:22,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475820217] [2024-12-02 08:52:22,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475820217] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:52:22,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:52:22,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:52:22,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618159721] [2024-12-02 08:52:22,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:52:22,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:52:22,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:52:22,405 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:52:22,405 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:52:22,406 INFO L87 Difference]: Start difference. First operand 190 states and 239 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-02 08:52:22,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:52:22,472 INFO L93 Difference]: Finished difference Result 224 states and 277 transitions. [2024-12-02 08:52:22,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:52:22,472 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 77 [2024-12-02 08:52:22,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:52:22,474 INFO L225 Difference]: With dead ends: 224 [2024-12-02 08:52:22,474 INFO L226 Difference]: Without dead ends: 190 [2024-12-02 08:52:22,475 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 [2024-12-02 08:52:22,476 INFO L435 NwaCegarLoop]: 232 mSDtfsCounter, 0 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:52:22,476 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 690 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:52:22,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-12-02 08:52:22,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 186. [2024-12-02 08:52:22,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 132 states have (on average 1.2424242424242424) internal successors, (164), 133 states have internal predecessors, (164), 35 states have call successors, (35), 18 states have call predecessors, (35), 18 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-12-02 08:52:22,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 233 transitions. [2024-12-02 08:52:22,488 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 233 transitions. Word has length 77 [2024-12-02 08:52:22,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:52:22,488 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 233 transitions. [2024-12-02 08:52:22,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-02 08:52:22,489 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 233 transitions. [2024-12-02 08:52:22,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-12-02 08:52:22,490 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:52:22,490 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:52:22,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 08:52:22,491 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:52:22,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:52:22,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1011536445, now seen corresponding path program 1 times [2024-12-02 08:52:22,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:52:22,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230840739] [2024-12-02 08:52:22,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:52:22,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:52:27,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:52:27,673 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-12-02 08:52:27,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:52:27,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230840739] [2024-12-02 08:52:27,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230840739] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:52:27,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:52:27,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:52:27,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116244603] [2024-12-02 08:52:27,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:52:27,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:52:27,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:52:27,675 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:52:27,676 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:52:27,676 INFO L87 Difference]: Start difference. First operand 186 states and 233 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 08:52:27,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:52:27,808 INFO L93 Difference]: Finished difference Result 296 states and 363 transitions. [2024-12-02 08:52:27,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:52:27,809 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 94 [2024-12-02 08:52:27,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:52:27,811 INFO L225 Difference]: With dead ends: 296 [2024-12-02 08:52:27,812 INFO L226 Difference]: Without dead ends: 191 [2024-12-02 08:52:27,812 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:52:27,813 INFO L435 NwaCegarLoop]: 228 mSDtfsCounter, 0 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 908 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 [2024-12-02 08:52:27,813 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 908 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:52:27,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-12-02 08:52:27,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2024-12-02 08:52:27,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 136 states have (on average 1.2352941176470589) internal successors, (168), 137 states have internal predecessors, (168), 35 states have call successors, (35), 18 states have call predecessors, (35), 19 states have return successors, (37), 35 states have call predecessors, (37), 34 states have call successors, (37) [2024-12-02 08:52:27,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 240 transitions. [2024-12-02 08:52:27,824 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 240 transitions. Word has length 94 [2024-12-02 08:52:27,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:52:27,825 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 240 transitions. [2024-12-02 08:52:27,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 08:52:27,825 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 240 transitions. [2024-12-02 08:52:27,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-12-02 08:52:27,826 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:52:27,826 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:52:27,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 08:52:27,827 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:52:27,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:52:27,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1521911148, now seen corresponding path program 1 times [2024-12-02 08:52:27,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:52:27,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548374638] [2024-12-02 08:52:27,827 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:52:27,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:52:32,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:52:35,029 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-12-02 08:52:35,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:52:35,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548374638] [2024-12-02 08:52:35,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548374638] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:52:35,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:52:35,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 08:52:35,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353216060] [2024-12-02 08:52:35,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:52:35,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 08:52:35,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:52:35,031 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 08:52:35,032 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:52:35,032 INFO L87 Difference]: Start difference. First operand 191 states and 240 transitions. Second operand has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 08:52:39,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 08:52:43,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 08:52:47,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 08:52:52,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.41s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 08:52:56,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 08:52:59,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:52:59,847 INFO L93 Difference]: Finished difference Result 235 states and 292 transitions. [2024-12-02 08:52:59,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 08:52:59,852 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 100 [2024-12-02 08:52:59,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:52:59,854 INFO L225 Difference]: With dead ends: 235 [2024-12-02 08:52:59,854 INFO L226 Difference]: Without dead ends: 199 [2024-12-02 08:52:59,854 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-12-02 08:52:59,855 INFO L435 NwaCegarLoop]: 224 mSDtfsCounter, 11 mSDsluCounter, 1040 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 1264 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.3s IncrementalHoareTripleChecker+Time [2024-12-02 08:52:59,855 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 1264 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 107 Invalid, 5 Unknown, 0 Unchecked, 24.3s Time] [2024-12-02 08:52:59,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2024-12-02 08:52:59,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 196. [2024-12-02 08:52:59,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 140 states have (on average 1.2357142857142858) internal successors, (173), 142 states have internal predecessors, (173), 35 states have call successors, (35), 18 states have call predecessors, (35), 20 states have return successors, (38), 35 states have call predecessors, (38), 34 states have call successors, (38) [2024-12-02 08:52:59,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 246 transitions. [2024-12-02 08:52:59,866 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 246 transitions. Word has length 100 [2024-12-02 08:52:59,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:52:59,867 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 246 transitions. [2024-12-02 08:52:59,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 08:52:59,867 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 246 transitions. [2024-12-02 08:52:59,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-12-02 08:52:59,868 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:52:59,868 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:52:59,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 08:52:59,868 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:52:59,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:52:59,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1128884138, now seen corresponding path program 1 times [2024-12-02 08:52:59,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:52:59,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344491196] [2024-12-02 08:52:59,869 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:52:59,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:53:04,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:53:05,696 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-12-02 08:53:05,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:53:05,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344491196] [2024-12-02 08:53:05,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344491196] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:53:05,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:53:05,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:53:05,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656245412] [2024-12-02 08:53:05,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:53:05,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:53:05,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:53:05,697 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:53:05,697 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:53:05,698 INFO L87 Difference]: Start difference. First operand 196 states and 246 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 08:53:05,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:53:05,891 INFO L93 Difference]: Finished difference Result 242 states and 300 transitions. [2024-12-02 08:53:05,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:53:05,892 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 100 [2024-12-02 08:53:05,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:53:05,893 INFO L225 Difference]: With dead ends: 242 [2024-12-02 08:53:05,893 INFO L226 Difference]: Without dead ends: 201 [2024-12-02 08:53:05,894 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:53:05,894 INFO L435 NwaCegarLoop]: 234 mSDtfsCounter, 5 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 08:53:05,894 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 677 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 08:53:05,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-12-02 08:53:05,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 198. [2024-12-02 08:53:05,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 141 states have (on average 1.2340425531914894) internal successors, (174), 143 states have internal predecessors, (174), 36 states have call successors, (36), 18 states have call predecessors, (36), 20 states have return successors, (39), 36 states have call predecessors, (39), 35 states have call successors, (39) [2024-12-02 08:53:05,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 249 transitions. [2024-12-02 08:53:05,903 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 249 transitions. Word has length 100 [2024-12-02 08:53:05,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:53:05,903 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 249 transitions. [2024-12-02 08:53:05,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 08:53:05,903 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 249 transitions. [2024-12-02 08:53:05,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-12-02 08:53:05,905 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:53:05,905 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:53:05,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 08:53:05,905 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:53:05,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:53:05,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1119241339, now seen corresponding path program 1 times [2024-12-02 08:53:05,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:53:05,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791192166] [2024-12-02 08:53:05,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:53:05,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:53:10,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:53:14,657 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-12-02 08:53:14,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:53:14,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791192166] [2024-12-02 08:53:14,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791192166] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:53:14,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:53:14,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 08:53:14,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660050832] [2024-12-02 08:53:14,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:53:14,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 08:53:14,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:53:14,658 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 08:53:14,658 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 08:53:14,659 INFO L87 Difference]: Start difference. First operand 198 states and 249 transitions. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 8 states have internal predecessors, (58), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2024-12-02 08:53:18,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 08:53:23,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 08:53:27,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 08:53:31,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 08:53:35,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:53:35,817 INFO L93 Difference]: Finished difference Result 249 states and 308 transitions. [2024-12-02 08:53:35,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 08:53:35,818 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 8 states have internal predecessors, (58), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 106 [2024-12-02 08:53:35,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:53:35,820 INFO L225 Difference]: With dead ends: 249 [2024-12-02 08:53:35,820 INFO L226 Difference]: Without dead ends: 201 [2024-12-02 08:53:35,821 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-12-02 08:53:35,822 INFO L435 NwaCegarLoop]: 225 mSDtfsCounter, 7 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1714 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.6s IncrementalHoareTripleChecker+Time [2024-12-02 08:53:35,822 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1714 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 136 Invalid, 4 Unknown, 0 Unchecked, 20.6s Time] [2024-12-02 08:53:35,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-12-02 08:53:35,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 198. [2024-12-02 08:53:35,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 141 states have (on average 1.2198581560283688) internal successors, (172), 143 states have internal predecessors, (172), 36 states have call successors, (36), 18 states have call predecessors, (36), 20 states have return successors, (39), 36 states have call predecessors, (39), 35 states have call successors, (39) [2024-12-02 08:53:35,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 247 transitions. [2024-12-02 08:53:35,835 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 247 transitions. Word has length 106 [2024-12-02 08:53:35,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:53:35,835 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 247 transitions. [2024-12-02 08:53:35,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 8 states have internal predecessors, (58), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2024-12-02 08:53:35,836 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 247 transitions. [2024-12-02 08:53:35,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-12-02 08:53:35,837 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:53:35,838 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 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] [2024-12-02 08:53:35,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 08:53:35,838 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:53:35,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:53:35,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1357800383, now seen corresponding path program 1 times [2024-12-02 08:53:35,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:53:35,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754675295] [2024-12-02 08:53:35,839 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:53:35,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:53:40,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:53:41,111 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-12-02 08:53:41,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:53:41,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754675295] [2024-12-02 08:53:41,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754675295] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:53:41,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:53:41,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:53:41,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970418965] [2024-12-02 08:53:41,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:53:41,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:53:41,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:53:41,113 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:53:41,113 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:53:41,113 INFO L87 Difference]: Start difference. First operand 198 states and 247 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 08:53:41,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:53:41,184 INFO L93 Difference]: Finished difference Result 313 states and 380 transitions. [2024-12-02 08:53:41,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:53:41,184 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 141 [2024-12-02 08:53:41,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:53:41,186 INFO L225 Difference]: With dead ends: 313 [2024-12-02 08:53:41,186 INFO L226 Difference]: Without dead ends: 198 [2024-12-02 08:53:41,187 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 [2024-12-02 08:53:41,187 INFO L435 NwaCegarLoop]: 231 mSDtfsCounter, 0 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:53:41,188 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 686 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:53:41,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-12-02 08:53:41,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 193. [2024-12-02 08:53:41,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 137 states have (on average 1.2116788321167884) internal successors, (166), 139 states have internal predecessors, (166), 36 states have call successors, (36), 18 states have call predecessors, (36), 19 states have return successors, (36), 35 states have call predecessors, (36), 35 states have call successors, (36) [2024-12-02 08:53:41,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 238 transitions. [2024-12-02 08:53:41,197 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 238 transitions. Word has length 141 [2024-12-02 08:53:41,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:53:41,198 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 238 transitions. [2024-12-02 08:53:41,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 08:53:41,198 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 238 transitions. [2024-12-02 08:53:41,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-12-02 08:53:41,199 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:53:41,199 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 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] [2024-12-02 08:53:41,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 08:53:41,199 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:53:41,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:53:41,199 INFO L85 PathProgramCache]: Analyzing trace with hash -200941205, now seen corresponding path program 1 times [2024-12-02 08:53:41,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:53:41,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781549273] [2024-12-02 08:53:41,200 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:53:41,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:53:45,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:53:46,213 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-12-02 08:53:46,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:53:46,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781549273] [2024-12-02 08:53:46,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781549273] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:53:46,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:53:46,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:53:46,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982682301] [2024-12-02 08:53:46,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:53:46,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:53:46,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:53:46,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:53:46,215 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:53:46,215 INFO L87 Difference]: Start difference. First operand 193 states and 238 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2024-12-02 08:53:46,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:53:46,431 INFO L93 Difference]: Finished difference Result 248 states and 304 transitions. [2024-12-02 08:53:46,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:53:46,431 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) Word has length 147 [2024-12-02 08:53:46,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:53:46,433 INFO L225 Difference]: With dead ends: 248 [2024-12-02 08:53:46,433 INFO L226 Difference]: Without dead ends: 198 [2024-12-02 08:53:46,433 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 [2024-12-02 08:53:46,433 INFO L435 NwaCegarLoop]: 224 mSDtfsCounter, 0 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 08:53:46,434 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 890 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 08:53:46,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-12-02 08:53:46,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2024-12-02 08:53:46,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 141 states have (on average 1.2056737588652482) internal successors, (170), 143 states have internal predecessors, (170), 36 states have call successors, (36), 18 states have call predecessors, (36), 20 states have return successors, (39), 36 states have call predecessors, (39), 35 states have call successors, (39) [2024-12-02 08:53:46,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 245 transitions. [2024-12-02 08:53:46,443 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 245 transitions. Word has length 147 [2024-12-02 08:53:46,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:53:46,443 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 245 transitions. [2024-12-02 08:53:46,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2024-12-02 08:53:46,443 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 245 transitions. [2024-12-02 08:53:46,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 08:53:46,444 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:53:46,444 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 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] [2024-12-02 08:53:46,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 08:53:46,445 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:53:46,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:53:46,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1764365140, now seen corresponding path program 1 times [2024-12-02 08:53:46,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:53:46,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227642174] [2024-12-02 08:53:46,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:53:46,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:53:51,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:53:51,920 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-12-02 08:53:51,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:53:51,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227642174] [2024-12-02 08:53:51,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227642174] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:53:51,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:53:51,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:53:51,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80219045] [2024-12-02 08:53:51,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:53:51,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:53:51,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:53:51,921 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:53:51,921 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:53:51,922 INFO L87 Difference]: Start difference. First operand 198 states and 245 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-12-02 08:53:52,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:53:52,471 INFO L93 Difference]: Finished difference Result 248 states and 303 transitions. [2024-12-02 08:53:52,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:53:52,472 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 153 [2024-12-02 08:53:52,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:53:52,473 INFO L225 Difference]: With dead ends: 248 [2024-12-02 08:53:52,473 INFO L226 Difference]: Without dead ends: 198 [2024-12-02 08:53:52,473 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:53:52,473 INFO L435 NwaCegarLoop]: 227 mSDtfsCounter, 0 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 08:53:52,474 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 675 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 08:53:52,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-12-02 08:53:52,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 193. [2024-12-02 08:53:52,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 137 states have (on average 1.2043795620437956) internal successors, (165), 139 states have internal predecessors, (165), 36 states have call successors, (36), 18 states have call predecessors, (36), 19 states have return successors, (36), 35 states have call predecessors, (36), 35 states have call successors, (36) [2024-12-02 08:53:52,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 237 transitions. [2024-12-02 08:53:52,481 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 237 transitions. Word has length 153 [2024-12-02 08:53:52,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:53:52,481 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 237 transitions. [2024-12-02 08:53:52,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-12-02 08:53:52,482 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 237 transitions. [2024-12-02 08:53:52,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-12-02 08:53:52,483 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:53:52,483 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 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] [2024-12-02 08:53:52,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 08:53:52,484 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:53:52,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:53:52,484 INFO L85 PathProgramCache]: Analyzing trace with hash 965134937, now seen corresponding path program 1 times [2024-12-02 08:53:52,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:53:52,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400406526] [2024-12-02 08:53:52,484 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:53:52,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:53:56,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:53:57,869 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-12-02 08:53:57,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:53:57,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400406526] [2024-12-02 08:53:57,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400406526] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:53:57,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:53:57,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 08:53:57,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197889315] [2024-12-02 08:53:57,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:53:57,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:53:57,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:53:57,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:53:57,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:53:57,871 INFO L87 Difference]: Start difference. First operand 193 states and 237 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2024-12-02 08:53:58,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:53:58,168 INFO L93 Difference]: Finished difference Result 250 states and 303 transitions. [2024-12-02 08:53:58,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:53:58,168 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) Word has length 160 [2024-12-02 08:53:58,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:53:58,170 INFO L225 Difference]: With dead ends: 250 [2024-12-02 08:53:58,170 INFO L226 Difference]: Without dead ends: 199 [2024-12-02 08:53:58,171 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:53:58,171 INFO L435 NwaCegarLoop]: 222 mSDtfsCounter, 2 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 08:53:58,171 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1101 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 08:53:58,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2024-12-02 08:53:58,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 198. [2024-12-02 08:53:58,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 141 states have (on average 1.198581560283688) internal successors, (169), 143 states have internal predecessors, (169), 36 states have call successors, (36), 18 states have call predecessors, (36), 20 states have return successors, (37), 36 states have call predecessors, (37), 35 states have call successors, (37) [2024-12-02 08:53:58,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 242 transitions. [2024-12-02 08:53:58,178 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 242 transitions. Word has length 160 [2024-12-02 08:53:58,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:53:58,178 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 242 transitions. [2024-12-02 08:53:58,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2024-12-02 08:53:58,179 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 242 transitions. [2024-12-02 08:53:58,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-12-02 08:53:58,180 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:53:58,180 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 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] [2024-12-02 08:53:58,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 08:53:58,181 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:53:58,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:53:58,181 INFO L85 PathProgramCache]: Analyzing trace with hash 2097784857, now seen corresponding path program 1 times [2024-12-02 08:53:58,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:53:58,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237625321] [2024-12-02 08:53:58,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:53:58,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:54:02,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:54:04,425 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-12-02 08:54:04,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:54:04,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237625321] [2024-12-02 08:54:04,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237625321] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:54:04,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:54:04,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 08:54:04,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565238138] [2024-12-02 08:54:04,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:54:04,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 08:54:04,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:54:04,427 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 08:54:04,427 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:54:04,428 INFO L87 Difference]: Start difference. First operand 198 states and 242 transitions. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 4 states have call predecessors, (25), 3 states have call successors, (25) [2024-12-02 08:54:05,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:54:05,035 INFO L93 Difference]: Finished difference Result 249 states and 301 transitions. [2024-12-02 08:54:05,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 08:54:05,044 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 4 states have call predecessors, (25), 3 states have call successors, (25) Word has length 166 [2024-12-02 08:54:05,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:54:05,045 INFO L225 Difference]: With dead ends: 249 [2024-12-02 08:54:05,045 INFO L226 Difference]: Without dead ends: 191 [2024-12-02 08:54:05,045 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:54:05,046 INFO L435 NwaCegarLoop]: 221 mSDtfsCounter, 0 mSDsluCounter, 1317 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 08:54:05,046 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1538 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 08:54:05,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-12-02 08:54:05,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2024-12-02 08:54:05,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 136 states have (on average 1.1911764705882353) internal successors, (162), 138 states have internal predecessors, (162), 35 states have call successors, (35), 18 states have call predecessors, (35), 19 states have return successors, (35), 34 states have call predecessors, (35), 34 states have call successors, (35) [2024-12-02 08:54:05,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 232 transitions. [2024-12-02 08:54:05,052 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 232 transitions. Word has length 166 [2024-12-02 08:54:05,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:54:05,052 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 232 transitions. [2024-12-02 08:54:05,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 4 states have call predecessors, (25), 3 states have call successors, (25) [2024-12-02 08:54:05,053 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 232 transitions. [2024-12-02 08:54:05,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-12-02 08:54:05,053 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:54:05,054 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 08:54:05,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 08:54:05,054 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:54:05,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:54:05,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1128868307, now seen corresponding path program 1 times [2024-12-02 08:54:05,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:54:05,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28838491] [2024-12-02 08:54:05,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:54:05,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:54:09,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:54:11,253 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-12-02 08:54:11,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:54:11,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28838491] [2024-12-02 08:54:11,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28838491] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:54:11,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:54:11,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 08:54:11,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639852804] [2024-12-02 08:54:11,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:54:11,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 08:54:11,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:54:11,255 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 08:54:11,255 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:54:11,255 INFO L87 Difference]: Start difference. First operand 191 states and 232 transitions. Second operand has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 7 states have internal predecessors, (85), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 08:54:15,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 08:54:19,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 08:54:21,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:54:21,345 INFO L93 Difference]: Finished difference Result 237 states and 289 transitions. [2024-12-02 08:54:21,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:54:21,346 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 7 states have internal predecessors, (85), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 185 [2024-12-02 08:54:21,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:54:21,347 INFO L225 Difference]: With dead ends: 237 [2024-12-02 08:54:21,347 INFO L226 Difference]: Without dead ends: 192 [2024-12-02 08:54:21,348 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:54:21,348 INFO L435 NwaCegarLoop]: 215 mSDtfsCounter, 3 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1249 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:54:21,349 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1249 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 2 Unknown, 0 Unchecked, 10.1s Time] [2024-12-02 08:54:21,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-12-02 08:54:21,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 191. [2024-12-02 08:54:21,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 136 states have (on average 1.1838235294117647) internal successors, (161), 138 states have internal predecessors, (161), 35 states have call successors, (35), 18 states have call predecessors, (35), 19 states have return successors, (35), 34 states have call predecessors, (35), 34 states have call successors, (35) [2024-12-02 08:54:21,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 231 transitions. [2024-12-02 08:54:21,356 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 231 transitions. Word has length 185 [2024-12-02 08:54:21,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:54:21,356 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 231 transitions. [2024-12-02 08:54:21,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 7 states have internal predecessors, (85), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 08:54:21,357 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 231 transitions. [2024-12-02 08:54:21,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-12-02 08:54:21,358 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:54:21,358 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 08:54:21,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 08:54:21,359 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:54:21,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:54:21,359 INFO L85 PathProgramCache]: Analyzing trace with hash -821047252, now seen corresponding path program 1 times [2024-12-02 08:54:21,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:54:21,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071248597] [2024-12-02 08:54:21,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:54:21,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:54:25,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:54:26,790 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-12-02 08:54:26,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:54:26,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071248597] [2024-12-02 08:54:26,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071248597] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:54:26,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:54:26,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:54:26,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735684512] [2024-12-02 08:54:26,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:54:26,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:54:26,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:54:26,791 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:54:26,791 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:54:26,792 INFO L87 Difference]: Start difference. First operand 191 states and 231 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-12-02 08:54:27,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:54:27,423 INFO L93 Difference]: Finished difference Result 337 states and 397 transitions. [2024-12-02 08:54:27,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:54:27,423 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 192 [2024-12-02 08:54:27,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:54:27,425 INFO L225 Difference]: With dead ends: 337 [2024-12-02 08:54:27,425 INFO L226 Difference]: Without dead ends: 194 [2024-12-02 08:54:27,426 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 [2024-12-02 08:54:27,426 INFO L435 NwaCegarLoop]: 217 mSDtfsCounter, 1 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 08:54:27,427 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 610 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 08:54:27,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-12-02 08:54:27,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2024-12-02 08:54:27,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 139 states have (on average 1.1798561151079137) internal successors, (164), 141 states have internal predecessors, (164), 35 states have call successors, (35), 18 states have call predecessors, (35), 19 states have return successors, (35), 34 states have call predecessors, (35), 34 states have call successors, (35) [2024-12-02 08:54:27,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 234 transitions. [2024-12-02 08:54:27,436 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 234 transitions. Word has length 192 [2024-12-02 08:54:27,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:54:27,436 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 234 transitions. [2024-12-02 08:54:27,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-12-02 08:54:27,436 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 234 transitions. [2024-12-02 08:54:27,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-12-02 08:54:27,438 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:54:27,438 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 08:54:27,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 08:54:27,438 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:54:27,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:54:27,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1075932206, now seen corresponding path program 1 times [2024-12-02 08:54:27,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:54:27,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433336259] [2024-12-02 08:54:27,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:54:27,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:54:33,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:54:34,544 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-12-02 08:54:34,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:54:34,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433336259] [2024-12-02 08:54:34,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433336259] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:54:34,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:54:34,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:54:34,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729429273] [2024-12-02 08:54:34,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:54:34,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:54:34,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:54:34,545 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:54:34,545 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:54:34,546 INFO L87 Difference]: Start difference. First operand 194 states and 234 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-12-02 08:54:35,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:54:35,261 INFO L93 Difference]: Finished difference Result 333 states and 389 transitions. [2024-12-02 08:54:35,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:54:35,262 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 192 [2024-12-02 08:54:35,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:54:35,264 INFO L225 Difference]: With dead ends: 333 [2024-12-02 08:54:35,264 INFO L226 Difference]: Without dead ends: 194 [2024-12-02 08:54:35,265 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:54:35,265 INFO L435 NwaCegarLoop]: 209 mSDtfsCounter, 1 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 08:54:35,265 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 594 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 08:54:35,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-12-02 08:54:35,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2024-12-02 08:54:35,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 139 states have (on average 1.1726618705035972) internal successors, (163), 141 states have internal predecessors, (163), 35 states have call successors, (35), 18 states have call predecessors, (35), 19 states have return successors, (35), 34 states have call predecessors, (35), 34 states have call successors, (35) [2024-12-02 08:54:35,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 233 transitions. [2024-12-02 08:54:35,275 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 233 transitions. Word has length 192 [2024-12-02 08:54:35,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:54:35,275 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 233 transitions. [2024-12-02 08:54:35,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-12-02 08:54:35,275 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 233 transitions. [2024-12-02 08:54:35,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-12-02 08:54:35,277 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:54:35,277 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 08:54:35,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 08:54:35,277 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:54:35,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:54:35,277 INFO L85 PathProgramCache]: Analyzing trace with hash 109488580, now seen corresponding path program 1 times [2024-12-02 08:54:35,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:54:35,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971844801] [2024-12-02 08:54:35,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:54:35,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:54:39,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:54:39,865 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-12-02 08:54:39,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:54:39,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971844801] [2024-12-02 08:54:39,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971844801] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:54:39,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:54:39,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:54:39,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659229107] [2024-12-02 08:54:39,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:54:39,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:54:39,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:54:39,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:54:39,867 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:54:39,867 INFO L87 Difference]: Start difference. First operand 194 states and 233 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2024-12-02 08:54:39,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:54:39,958 INFO L93 Difference]: Finished difference Result 329 states and 383 transitions. [2024-12-02 08:54:39,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:54:39,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) Word has length 197 [2024-12-02 08:54:39,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:54:39,959 INFO L225 Difference]: With dead ends: 329 [2024-12-02 08:54:39,959 INFO L226 Difference]: Without dead ends: 194 [2024-12-02 08:54:39,960 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 [2024-12-02 08:54:39,960 INFO L435 NwaCegarLoop]: 218 mSDtfsCounter, 0 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:54:39,961 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 649 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:54:39,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-12-02 08:54:39,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 192. [2024-12-02 08:54:39,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 137 states have (on average 1.167883211678832) internal successors, (160), 139 states have internal predecessors, (160), 35 states have call successors, (35), 18 states have call predecessors, (35), 19 states have return successors, (35), 34 states have call predecessors, (35), 34 states have call successors, (35) [2024-12-02 08:54:39,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 230 transitions. [2024-12-02 08:54:39,968 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 230 transitions. Word has length 197 [2024-12-02 08:54:39,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:54:39,969 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 230 transitions. [2024-12-02 08:54:39,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2024-12-02 08:54:39,969 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 230 transitions. [2024-12-02 08:54:39,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-12-02 08:54:39,970 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:54:39,970 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 08:54:39,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 08:54:39,970 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:54:39,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:54:39,970 INFO L85 PathProgramCache]: Analyzing trace with hash 495167305, now seen corresponding path program 1 times [2024-12-02 08:54:39,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:54:39,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623326393] [2024-12-02 08:54:39,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:54:39,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:54:44,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:54:45,416 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-12-02 08:54:45,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:54:45,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623326393] [2024-12-02 08:54:45,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623326393] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:54:45,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:54:45,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 08:54:45,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620634270] [2024-12-02 08:54:45,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:54:45,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:54:45,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:54:45,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:54:45,418 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:54:45,418 INFO L87 Difference]: Start difference. First operand 192 states and 230 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 5 states have internal predecessors, (95), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2024-12-02 08:54:45,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:54:45,585 INFO L93 Difference]: Finished difference Result 331 states and 385 transitions. [2024-12-02 08:54:45,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:54:45,586 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 5 states have internal predecessors, (95), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) Word has length 199 [2024-12-02 08:54:45,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:54:45,587 INFO L225 Difference]: With dead ends: 331 [2024-12-02 08:54:45,587 INFO L226 Difference]: Without dead ends: 190 [2024-12-02 08:54:45,588 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:54:45,588 INFO L435 NwaCegarLoop]: 216 mSDtfsCounter, 0 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 08:54:45,588 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1073 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 08:54:45,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-12-02 08:54:45,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 187. [2024-12-02 08:54:45,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 133 states have (on average 1.1654135338345866) internal successors, (155), 135 states have internal predecessors, (155), 34 states have call successors, (34), 18 states have call predecessors, (34), 19 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2024-12-02 08:54:45,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 223 transitions. [2024-12-02 08:54:45,594 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 223 transitions. Word has length 199 [2024-12-02 08:54:45,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:54:45,594 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 223 transitions. [2024-12-02 08:54:45,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 5 states have internal predecessors, (95), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2024-12-02 08:54:45,594 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 223 transitions. [2024-12-02 08:54:45,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-12-02 08:54:45,595 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:54:45,596 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2024-12-02 08:54:45,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 08:54:45,596 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:54:45,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:54:45,596 INFO L85 PathProgramCache]: Analyzing trace with hash -9410609, now seen corresponding path program 1 times [2024-12-02 08:54:45,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:54:45,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717687550] [2024-12-02 08:54:45,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:54:45,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:54:52,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:54:59,316 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-12-02 08:54:59,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:54:59,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717687550] [2024-12-02 08:54:59,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717687550] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:54:59,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:54:59,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 08:54:59,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661870327] [2024-12-02 08:54:59,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:54:59,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 08:54:59,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:54:59,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 08:54:59,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-12-02 08:54:59,318 INFO L87 Difference]: Start difference. First operand 187 states and 223 transitions. Second operand has 13 states, 11 states have (on average 9.363636363636363) internal successors, (103), 9 states have internal predecessors, (103), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (28), 4 states have call predecessors, (28), 2 states have call successors, (28) [2024-12-02 08:55:03,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 08:55:07,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 08:55:09,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:55:09,740 INFO L93 Difference]: Finished difference Result 209 states and 247 transitions. [2024-12-02 08:55:09,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 08:55:09,740 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 9.363636363636363) internal successors, (103), 9 states have internal predecessors, (103), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (28), 4 states have call predecessors, (28), 2 states have call successors, (28) Word has length 205 [2024-12-02 08:55:09,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:55:09,742 INFO L225 Difference]: With dead ends: 209 [2024-12-02 08:55:09,742 INFO L226 Difference]: Without dead ends: 207 [2024-12-02 08:55:09,743 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-12-02 08:55:09,743 INFO L435 NwaCegarLoop]: 205 mSDtfsCounter, 3 mSDsluCounter, 1816 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2021 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2024-12-02 08:55:09,743 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2021 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 116 Invalid, 2 Unknown, 0 Unchecked, 10.2s Time] [2024-12-02 08:55:09,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-12-02 08:55:09,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 202. [2024-12-02 08:55:09,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 143 states have (on average 1.1538461538461537) internal successors, (165), 146 states have internal predecessors, (165), 35 states have call successors, (35), 19 states have call predecessors, (35), 23 states have return successors, (40), 36 states have call predecessors, (40), 34 states have call successors, (40) [2024-12-02 08:55:09,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 240 transitions. [2024-12-02 08:55:09,753 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 240 transitions. Word has length 205 [2024-12-02 08:55:09,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:55:09,753 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 240 transitions. [2024-12-02 08:55:09,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 9.363636363636363) internal successors, (103), 9 states have internal predecessors, (103), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (28), 4 states have call predecessors, (28), 2 states have call successors, (28) [2024-12-02 08:55:09,753 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 240 transitions. [2024-12-02 08:55:09,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-12-02 08:55:09,755 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:55:09,755 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:55:09,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 08:55:09,755 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:55:09,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:55:09,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1174425770, now seen corresponding path program 1 times [2024-12-02 08:55:09,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:55:09,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764056317] [2024-12-02 08:55:09,756 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:55:09,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:55:15,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:55:17,156 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-12-02 08:55:17,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:55:17,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764056317] [2024-12-02 08:55:17,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764056317] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:55:17,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:55:17,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:55:17,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329595357] [2024-12-02 08:55:17,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:55:17,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:55:17,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:55:17,157 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:55:17,157 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:55:17,157 INFO L87 Difference]: Start difference. First operand 202 states and 240 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-12-02 08:55:17,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:55:17,960 INFO L93 Difference]: Finished difference Result 383 states and 451 transitions. [2024-12-02 08:55:17,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:55:17,961 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 207 [2024-12-02 08:55:17,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:55:17,962 INFO L225 Difference]: With dead ends: 383 [2024-12-02 08:55:17,962 INFO L226 Difference]: Without dead ends: 208 [2024-12-02 08:55:17,963 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:55:17,963 INFO L435 NwaCegarLoop]: 207 mSDtfsCounter, 2 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 08:55:17,964 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 586 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 08:55:17,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-12-02 08:55:17,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 206. [2024-12-02 08:55:17,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 147 states have (on average 1.1496598639455782) internal successors, (169), 150 states have internal predecessors, (169), 35 states have call successors, (35), 19 states have call predecessors, (35), 23 states have return successors, (40), 36 states have call predecessors, (40), 34 states have call successors, (40) [2024-12-02 08:55:17,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 244 transitions. [2024-12-02 08:55:17,975 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 244 transitions. Word has length 207 [2024-12-02 08:55:17,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:55:17,975 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 244 transitions. [2024-12-02 08:55:17,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-12-02 08:55:17,975 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 244 transitions. [2024-12-02 08:55:17,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-12-02 08:55:17,976 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:55:17,976 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:55:17,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 08:55:17,977 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:55:17,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:55:17,977 INFO L85 PathProgramCache]: Analyzing trace with hash 388427880, now seen corresponding path program 1 times [2024-12-02 08:55:17,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:55:17,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686734618] [2024-12-02 08:55:17,977 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:55:17,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:55:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:55:26,643 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-12-02 08:55:26,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:55:26,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686734618] [2024-12-02 08:55:26,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686734618] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:55:26,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:55:26,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:55:26,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652450548] [2024-12-02 08:55:26,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:55:26,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:55:26,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:55:26,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:55:26,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:55:26,644 INFO L87 Difference]: Start difference. First operand 206 states and 244 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-12-02 08:55:27,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:55:27,930 INFO L93 Difference]: Finished difference Result 381 states and 447 transitions. [2024-12-02 08:55:27,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:55:27,931 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 207 [2024-12-02 08:55:27,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:55:27,932 INFO L225 Difference]: With dead ends: 381 [2024-12-02 08:55:27,932 INFO L226 Difference]: Without dead ends: 206 [2024-12-02 08:55:27,933 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:55:27,933 INFO L435 NwaCegarLoop]: 191 mSDtfsCounter, 1 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 08:55:27,933 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 729 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 08:55:27,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-12-02 08:55:27,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 202. [2024-12-02 08:55:27,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 143 states have (on average 1.1468531468531469) internal successors, (164), 146 states have internal predecessors, (164), 35 states have call successors, (35), 19 states have call predecessors, (35), 23 states have return successors, (40), 36 states have call predecessors, (40), 34 states have call successors, (40) [2024-12-02 08:55:27,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 239 transitions. [2024-12-02 08:55:27,944 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 239 transitions. Word has length 207 [2024-12-02 08:55:27,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:55:27,944 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 239 transitions. [2024-12-02 08:55:27,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-12-02 08:55:27,945 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 239 transitions. [2024-12-02 08:55:27,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-12-02 08:55:27,946 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:55:27,946 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:55:27,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 08:55:27,946 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:55:27,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:55:27,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1374613221, now seen corresponding path program 1 times [2024-12-02 08:55:27,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:55:27,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886080866] [2024-12-02 08:55:27,947 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:55:27,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:55:33,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:55:35,013 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-12-02 08:55:35,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:55:35,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886080866] [2024-12-02 08:55:35,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886080866] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:55:35,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:55:35,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 08:55:35,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789318570] [2024-12-02 08:55:35,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:55:35,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 08:55:35,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:55:35,015 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 08:55:35,015 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:55:35,015 INFO L87 Difference]: Start difference. First operand 202 states and 239 transitions. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-12-02 08:55:36,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:55:36,766 INFO L93 Difference]: Finished difference Result 386 states and 454 transitions. [2024-12-02 08:55:36,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:55:36,767 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 208 [2024-12-02 08:55:36,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:55:36,769 INFO L225 Difference]: With dead ends: 386 [2024-12-02 08:55:36,769 INFO L226 Difference]: Without dead ends: 210 [2024-12-02 08:55:36,770 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:55:36,771 INFO L435 NwaCegarLoop]: 205 mSDtfsCounter, 1 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1135 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-12-02 08:55:36,772 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1135 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-12-02 08:55:36,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2024-12-02 08:55:36,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2024-12-02 08:55:36,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 151 states have (on average 1.1390728476821192) internal successors, (172), 154 states have internal predecessors, (172), 35 states have call successors, (35), 19 states have call predecessors, (35), 23 states have return successors, (40), 36 states have call predecessors, (40), 34 states have call successors, (40) [2024-12-02 08:55:36,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 247 transitions. [2024-12-02 08:55:36,782 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 247 transitions. Word has length 208 [2024-12-02 08:55:36,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:55:36,783 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 247 transitions. [2024-12-02 08:55:36,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-12-02 08:55:36,783 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 247 transitions. [2024-12-02 08:55:36,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-12-02 08:55:36,785 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:55:36,785 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:55:36,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 08:55:36,785 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:55:36,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:55:36,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1516484889, now seen corresponding path program 1 times [2024-12-02 08:55:36,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:55:36,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461495197] [2024-12-02 08:55:36,786 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:55:36,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:55:43,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:55:50,438 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-12-02 08:55:50,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:55:50,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461495197] [2024-12-02 08:55:50,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461495197] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:55:50,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:55:50,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-02 08:55:50,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503054617] [2024-12-02 08:55:50,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:55:50,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 08:55:50,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:55:50,440 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 08:55:50,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-12-02 08:55:50,441 INFO L87 Difference]: Start difference. First operand 210 states and 247 transitions. Second operand has 14 states, 12 states have (on average 8.833333333333334) internal successors, (106), 10 states have internal predecessors, (106), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (28), 4 states have call predecessors, (28), 2 states have call successors, (28) [2024-12-02 08:55:54,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 08:55:58,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 08:56:02,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:56:02,757 INFO L93 Difference]: Finished difference Result 233 states and 272 transitions. [2024-12-02 08:56:02,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 08:56:02,758 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 8.833333333333334) internal successors, (106), 10 states have internal predecessors, (106), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (28), 4 states have call predecessors, (28), 2 states have call successors, (28) Word has length 208 [2024-12-02 08:56:02,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:56:02,761 INFO L225 Difference]: With dead ends: 233 [2024-12-02 08:56:02,761 INFO L226 Difference]: Without dead ends: 231 [2024-12-02 08:56:02,761 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2024-12-02 08:56:02,762 INFO L435 NwaCegarLoop]: 212 mSDtfsCounter, 8 mSDsluCounter, 2266 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2478 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2024-12-02 08:56:02,762 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2478 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 222 Invalid, 2 Unknown, 0 Unchecked, 11.9s Time] [2024-12-02 08:56:02,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-12-02 08:56:02,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 211. [2024-12-02 08:56:02,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 152 states have (on average 1.138157894736842) internal successors, (173), 155 states have internal predecessors, (173), 35 states have call successors, (35), 19 states have call predecessors, (35), 23 states have return successors, (40), 36 states have call predecessors, (40), 34 states have call successors, (40) [2024-12-02 08:56:02,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 248 transitions. [2024-12-02 08:56:02,770 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 248 transitions. Word has length 208 [2024-12-02 08:56:02,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:56:02,770 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 248 transitions. [2024-12-02 08:56:02,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 8.833333333333334) internal successors, (106), 10 states have internal predecessors, (106), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (28), 4 states have call predecessors, (28), 2 states have call successors, (28) [2024-12-02 08:56:02,770 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 248 transitions. [2024-12-02 08:56:02,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2024-12-02 08:56:02,771 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:56:02,772 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:56:02,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 08:56:02,772 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:56:02,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:56:02,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1851385092, now seen corresponding path program 1 times [2024-12-02 08:56:02,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:56:02,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347941200] [2024-12-02 08:56:02,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:56:02,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:56:08,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:56:10,544 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-12-02 08:56:10,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:56:10,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347941200] [2024-12-02 08:56:10,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347941200] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:56:10,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:56:10,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:56:10,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883750276] [2024-12-02 08:56:10,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:56:10,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:56:10,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:56:10,545 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:56:10,545 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:56:10,546 INFO L87 Difference]: Start difference. First operand 211 states and 248 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-12-02 08:56:11,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:56:11,367 INFO L93 Difference]: Finished difference Result 383 states and 446 transitions. [2024-12-02 08:56:11,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:56:11,368 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 210 [2024-12-02 08:56:11,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:56:11,369 INFO L225 Difference]: With dead ends: 383 [2024-12-02 08:56:11,370 INFO L226 Difference]: Without dead ends: 211 [2024-12-02 08:56:11,370 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:56:11,370 INFO L435 NwaCegarLoop]: 191 mSDtfsCounter, 7 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 08:56:11,371 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 555 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 08:56:11,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-12-02 08:56:11,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2024-12-02 08:56:11,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 152 states have (on average 1.131578947368421) internal successors, (172), 155 states have internal predecessors, (172), 35 states have call successors, (35), 19 states have call predecessors, (35), 23 states have return successors, (40), 36 states have call predecessors, (40), 34 states have call successors, (40) [2024-12-02 08:56:11,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 247 transitions. [2024-12-02 08:56:11,378 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 247 transitions. Word has length 210 [2024-12-02 08:56:11,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:56:11,378 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 247 transitions. [2024-12-02 08:56:11,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-12-02 08:56:11,378 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 247 transitions. [2024-12-02 08:56:11,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2024-12-02 08:56:11,379 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:56:11,379 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:56:11,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-12-02 08:56:11,379 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:56:11,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:56:11,380 INFO L85 PathProgramCache]: Analyzing trace with hash 881577568, now seen corresponding path program 1 times [2024-12-02 08:56:11,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:56:11,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841855060] [2024-12-02 08:56:11,380 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:56:11,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:56:17,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:56:19,234 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-12-02 08:56:19,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:56:19,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841855060] [2024-12-02 08:56:19,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841855060] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:56:19,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:56:19,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 08:56:19,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001742900] [2024-12-02 08:56:19,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:56:19,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 08:56:19,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:56:19,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 08:56:19,236 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:56:19,236 INFO L87 Difference]: Start difference. First operand 211 states and 247 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-12-02 08:56:20,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:56:20,780 INFO L93 Difference]: Finished difference Result 383 states and 445 transitions. [2024-12-02 08:56:20,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:56:20,781 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 211 [2024-12-02 08:56:20,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:56:20,782 INFO L225 Difference]: With dead ends: 383 [2024-12-02 08:56:20,783 INFO L226 Difference]: Without dead ends: 214 [2024-12-02 08:56:20,783 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:56:20,783 INFO L435 NwaCegarLoop]: 201 mSDtfsCounter, 2 mSDsluCounter, 946 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-12-02 08:56:20,784 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1147 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-12-02 08:56:20,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-12-02 08:56:20,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2024-12-02 08:56:20,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 155 states have (on average 1.1290322580645162) internal successors, (175), 158 states have internal predecessors, (175), 35 states have call successors, (35), 19 states have call predecessors, (35), 23 states have return successors, (40), 36 states have call predecessors, (40), 34 states have call successors, (40) [2024-12-02 08:56:20,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 250 transitions. [2024-12-02 08:56:20,791 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 250 transitions. Word has length 211 [2024-12-02 08:56:20,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:56:20,791 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 250 transitions. [2024-12-02 08:56:20,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-12-02 08:56:20,791 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 250 transitions. [2024-12-02 08:56:20,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2024-12-02 08:56:20,792 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:56:20,793 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:56:20,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-12-02 08:56:20,793 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:56:20,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:56:20,793 INFO L85 PathProgramCache]: Analyzing trace with hash -843030754, now seen corresponding path program 1 times [2024-12-02 08:56:20,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:56:20,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095554079] [2024-12-02 08:56:20,794 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:56:20,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:56:27,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:56:29,123 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-12-02 08:56:29,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:56:29,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095554079] [2024-12-02 08:56:29,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095554079] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:56:29,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:56:29,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:56:29,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667105404] [2024-12-02 08:56:29,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:56:29,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:56:29,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:56:29,125 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:56:29,125 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:56:29,126 INFO L87 Difference]: Start difference. First operand 214 states and 250 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-12-02 08:56:30,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:56:30,251 INFO L93 Difference]: Finished difference Result 382 states and 442 transitions. [2024-12-02 08:56:30,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:56:30,252 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 211 [2024-12-02 08:56:30,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:56:30,254 INFO L225 Difference]: With dead ends: 382 [2024-12-02 08:56:30,254 INFO L226 Difference]: Without dead ends: 214 [2024-12-02 08:56:30,255 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:56:30,255 INFO L435 NwaCegarLoop]: 188 mSDtfsCounter, 7 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:56:30,255 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 735 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 08:56:30,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-12-02 08:56:30,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2024-12-02 08:56:30,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 155 states have (on average 1.1225806451612903) internal successors, (174), 158 states have internal predecessors, (174), 35 states have call successors, (35), 19 states have call predecessors, (35), 23 states have return successors, (40), 36 states have call predecessors, (40), 34 states have call successors, (40) [2024-12-02 08:56:30,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 249 transitions. [2024-12-02 08:56:30,264 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 249 transitions. Word has length 211 [2024-12-02 08:56:30,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:56:30,265 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 249 transitions. [2024-12-02 08:56:30,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-12-02 08:56:30,265 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 249 transitions. [2024-12-02 08:56:30,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-12-02 08:56:30,266 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:56:30,266 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:56:30,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-12-02 08:56:30,267 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:56:30,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:56:30,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1755865211, now seen corresponding path program 1 times [2024-12-02 08:56:30,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:56:30,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767555026] [2024-12-02 08:56:30,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:56:30,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:56:36,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:56:39,086 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-12-02 08:56:39,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:56:39,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767555026] [2024-12-02 08:56:39,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767555026] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:56:39,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:56:39,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 08:56:39,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586481582] [2024-12-02 08:56:39,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:56:39,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 08:56:39,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:56:39,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 08:56:39,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-12-02 08:56:39,088 INFO L87 Difference]: Start difference. First operand 214 states and 249 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-12-02 08:56:40,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:56:40,603 INFO L93 Difference]: Finished difference Result 382 states and 441 transitions. [2024-12-02 08:56:40,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 08:56:40,604 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 212 [2024-12-02 08:56:40,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:56:40,605 INFO L225 Difference]: With dead ends: 382 [2024-12-02 08:56:40,606 INFO L226 Difference]: Without dead ends: 217 [2024-12-02 08:56:40,606 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-12-02 08:56:40,606 INFO L435 NwaCegarLoop]: 197 mSDtfsCounter, 2 mSDsluCounter, 954 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-12-02 08:56:40,607 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1151 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-12-02 08:56:40,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2024-12-02 08:56:40,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2024-12-02 08:56:40,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 158 states have (on average 1.120253164556962) internal successors, (177), 161 states have internal predecessors, (177), 35 states have call successors, (35), 19 states have call predecessors, (35), 23 states have return successors, (40), 36 states have call predecessors, (40), 34 states have call successors, (40) [2024-12-02 08:56:40,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 252 transitions. [2024-12-02 08:56:40,613 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 252 transitions. Word has length 212 [2024-12-02 08:56:40,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:56:40,613 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 252 transitions. [2024-12-02 08:56:40,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-12-02 08:56:40,613 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 252 transitions. [2024-12-02 08:56:40,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-12-02 08:56:40,614 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:56:40,614 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:56:40,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-12-02 08:56:40,615 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:56:40,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:56:40,615 INFO L85 PathProgramCache]: Analyzing trace with hash -167385219, now seen corresponding path program 1 times [2024-12-02 08:56:40,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:56:40,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779943736] [2024-12-02 08:56:40,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:56:40,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:56:47,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:56:49,796 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-12-02 08:56:49,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:56:49,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779943736] [2024-12-02 08:56:49,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779943736] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:56:49,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:56:49,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 08:56:49,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478872892] [2024-12-02 08:56:49,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:56:49,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:56:49,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:56:49,797 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:56:49,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:56:49,798 INFO L87 Difference]: Start difference. First operand 217 states and 252 transitions. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-12-02 08:56:51,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:56:51,282 INFO L93 Difference]: Finished difference Result 381 states and 438 transitions. [2024-12-02 08:56:51,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:56:51,283 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 212 [2024-12-02 08:56:51,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:56:51,285 INFO L225 Difference]: With dead ends: 381 [2024-12-02 08:56:51,285 INFO L226 Difference]: Without dead ends: 217 [2024-12-02 08:56:51,285 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:56:51,285 INFO L435 NwaCegarLoop]: 185 mSDtfsCounter, 7 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-12-02 08:56:51,286 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 909 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-12-02 08:56:51,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2024-12-02 08:56:51,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2024-12-02 08:56:51,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 158 states have (on average 1.1139240506329113) internal successors, (176), 161 states have internal predecessors, (176), 35 states have call successors, (35), 19 states have call predecessors, (35), 23 states have return successors, (40), 36 states have call predecessors, (40), 34 states have call successors, (40) [2024-12-02 08:56:51,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 251 transitions. [2024-12-02 08:56:51,292 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 251 transitions. Word has length 212 [2024-12-02 08:56:51,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:56:51,292 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 251 transitions. [2024-12-02 08:56:51,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-12-02 08:56:51,292 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 251 transitions. [2024-12-02 08:56:51,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-12-02 08:56:51,293 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:56:51,294 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:56:51,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-12-02 08:56:51,294 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:56:51,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:56:51,294 INFO L85 PathProgramCache]: Analyzing trace with hash 258165561, now seen corresponding path program 1 times [2024-12-02 08:56:51,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:56:51,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048708488] [2024-12-02 08:56:51,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:56:51,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:56:56,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:57:00,457 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-12-02 08:57:00,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:57:00,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048708488] [2024-12-02 08:57:00,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048708488] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:57:00,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:57:00,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-12-02 08:57:00,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056450382] [2024-12-02 08:57:00,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:57:00,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 08:57:00,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:57:00,458 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 08:57:00,458 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-12-02 08:57:00,459 INFO L87 Difference]: Start difference. First operand 217 states and 251 transitions. Second operand has 11 states, 11 states have (on average 10.090909090909092) internal successors, (111), 11 states have internal predecessors, (111), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-12-02 08:57:04,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:57:04,430 INFO L93 Difference]: Finished difference Result 383 states and 440 transitions. [2024-12-02 08:57:04,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 08:57:04,430 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.090909090909092) internal successors, (111), 11 states have internal predecessors, (111), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 213 [2024-12-02 08:57:04,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:57:04,432 INFO L225 Difference]: With dead ends: 383 [2024-12-02 08:57:04,432 INFO L226 Difference]: Without dead ends: 222 [2024-12-02 08:57:04,433 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-12-02 08:57:04,433 INFO L435 NwaCegarLoop]: 180 mSDtfsCounter, 7 mSDsluCounter, 1595 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1775 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:57:04,433 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1775 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-12-02 08:57:04,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-12-02 08:57:04,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2024-12-02 08:57:04,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 163 states have (on average 1.1104294478527608) internal successors, (181), 166 states have internal predecessors, (181), 35 states have call successors, (35), 19 states have call predecessors, (35), 23 states have return successors, (40), 36 states have call predecessors, (40), 34 states have call successors, (40) [2024-12-02 08:57:04,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 256 transitions. [2024-12-02 08:57:04,440 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 256 transitions. Word has length 213 [2024-12-02 08:57:04,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:57:04,440 INFO L471 AbstractCegarLoop]: Abstraction has 222 states and 256 transitions. [2024-12-02 08:57:04,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.090909090909092) internal successors, (111), 11 states have internal predecessors, (111), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-12-02 08:57:04,440 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 256 transitions. [2024-12-02 08:57:04,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-12-02 08:57:04,441 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:57:04,441 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:57:04,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-12-02 08:57:04,442 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:57:04,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:57:04,442 INFO L85 PathProgramCache]: Analyzing trace with hash 766944375, now seen corresponding path program 1 times [2024-12-02 08:57:04,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:57:04,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287555427] [2024-12-02 08:57:04,442 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:57:04,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:57:11,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:57:14,340 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-12-02 08:57:14,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:57:14,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287555427] [2024-12-02 08:57:14,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287555427] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:57:14,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:57:14,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 08:57:14,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384738804] [2024-12-02 08:57:14,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:57:14,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 08:57:14,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:57:14,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 08:57:14,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:57:14,341 INFO L87 Difference]: Start difference. First operand 222 states and 256 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-12-02 08:57:16,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:57:16,642 INFO L93 Difference]: Finished difference Result 382 states and 436 transitions. [2024-12-02 08:57:16,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 08:57:16,642 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 213 [2024-12-02 08:57:16,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:57:16,645 INFO L225 Difference]: With dead ends: 382 [2024-12-02 08:57:16,645 INFO L226 Difference]: Without dead ends: 222 [2024-12-02 08:57:16,646 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:57:16,646 INFO L435 NwaCegarLoop]: 179 mSDtfsCounter, 8 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1239 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-12-02 08:57:16,646 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1239 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-12-02 08:57:16,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-12-02 08:57:16,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 220. [2024-12-02 08:57:16,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 161 states have (on average 1.0993788819875776) internal successors, (177), 164 states have internal predecessors, (177), 35 states have call successors, (35), 19 states have call predecessors, (35), 23 states have return successors, (40), 36 states have call predecessors, (40), 34 states have call successors, (40) [2024-12-02 08:57:16,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 252 transitions. [2024-12-02 08:57:16,652 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 252 transitions. Word has length 213 [2024-12-02 08:57:16,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:57:16,653 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 252 transitions. [2024-12-02 08:57:16,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-12-02 08:57:16,653 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 252 transitions. [2024-12-02 08:57:16,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-12-02 08:57:16,654 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:57:16,654 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:57:16,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-12-02 08:57:16,655 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:57:16,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:57:16,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1457537170, now seen corresponding path program 1 times [2024-12-02 08:57:16,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:57:16,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110305582] [2024-12-02 08:57:16,655 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:57:16,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:57:28,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-02 08:57:28,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1848860371] [2024-12-02 08:57:28,841 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:57:28,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:57:28,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46dcf593-6603-4c17-9a8e-7998fff6e460/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:57:28,842 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46dcf593-6603-4c17-9a8e-7998fff6e460/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:57:28,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46dcf593-6603-4c17-9a8e-7998fff6e460/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process