./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 414eeb8ea1256fa06cba80a48a09ba5f5bd5aff7438b9ba4ea2d399e84c5db41 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:06:23,112 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:06:23,212 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-28 03:06:23,220 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:06:23,220 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:06:23,262 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:06:23,264 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:06:23,264 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:06:23,265 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:06:23,265 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:06:23,266 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:06:23,266 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:06:23,267 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:06:23,267 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:06:23,268 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:06:23,268 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:06:23,268 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:06:23,269 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:06:23,269 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:06:23,269 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:06:23,269 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:06:23,269 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:06:23,269 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:06:23,269 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:06:23,270 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:06:23,270 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:06:23,270 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:06:23,270 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:06:23,270 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:06:23,270 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:06:23,270 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:06:23,271 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:06:23,272 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:06:23,272 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:06:23,272 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:06:23,272 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:06:23,272 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:06:23,272 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:06:23,273 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:06:23,273 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:06:23,273 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:06:23,273 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:06:23,273 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:06:23,273 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:06:23,273 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:06:23,273 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_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 414eeb8ea1256fa06cba80a48a09ba5f5bd5aff7438b9ba4ea2d399e84c5db41 [2024-11-28 03:06:23,627 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:06:23,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:06:23,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:06:23,642 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:06:23,642 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:06:23,644 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness.i [2024-11-28 03:06:26,725 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/data/d5b434b52/dc17635217dd4cd1bfef423a02d17f0f/FLAG33129f345 [2024-11-28 03:06:27,462 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:06:27,465 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness.i [2024-11-28 03:06:27,507 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/data/d5b434b52/dc17635217dd4cd1bfef423a02d17f0f/FLAG33129f345 [2024-11-28 03:06:27,525 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/data/d5b434b52/dc17635217dd4cd1bfef423a02d17f0f [2024-11-28 03:06:27,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:06:27,530 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:06:27,532 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:06:27,533 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:06:27,539 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:06:27,540 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:06:27" (1/1) ... [2024-11-28 03:06:27,541 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dcdd660 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:27, skipping insertion in model container [2024-11-28 03:06:27,541 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:06:27" (1/1) ... [2024-11-28 03:06:27,668 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:06:28,085 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_c77d7889-057a-4d3c-bbd8-274cd380c5da/sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness.i[4494,4507] [2024-11-28 03:06:28,096 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_c77d7889-057a-4d3c-bbd8-274cd380c5da/sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness.i[4554,4567] [2024-11-28 03:06:29,431 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:29,432 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:29,433 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:29,434 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:29,435 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:29,455 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:29,456 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:29,458 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:29,459 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:29,462 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:29,463 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:29,464 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:29,465 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:31,225 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:31,226 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:31,271 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:31,272 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:31,285 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:31,286 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:31,305 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:31,306 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:31,307 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:31,307 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:31,308 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:31,308 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:31,309 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:31,351 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_c77d7889-057a-4d3c-bbd8-274cd380c5da/sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness.i[228101,228114] [2024-11-28 03:06:31,352 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:06:31,387 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:06:31,403 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_c77d7889-057a-4d3c-bbd8-274cd380c5da/sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness.i[4494,4507] [2024-11-28 03:06:31,403 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_c77d7889-057a-4d3c-bbd8-274cd380c5da/sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness.i[4554,4567] [2024-11-28 03:06:31,453 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:31,454 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:31,455 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:31,456 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:31,456 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:31,468 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:31,468 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:31,469 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:31,470 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:31,471 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:31,472 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:31,472 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:31,473 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:31,591 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7585-7596] [2024-11-28 03:06:31,744 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:31,744 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:31,755 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:31,756 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:31,759 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:31,760 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:31,770 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:31,772 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:31,772 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:31,774 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:31,774 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:31,774 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:31,775 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:06:31,802 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_c77d7889-057a-4d3c-bbd8-274cd380c5da/sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness.i[228101,228114] [2024-11-28 03:06:31,802 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:06:32,118 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:06:32,119 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:32 WrapperNode [2024-11-28 03:06:32,120 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:06:32,121 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:06:32,121 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:06:32,122 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:06:32,129 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:32" (1/1) ... [2024-11-28 03:06:32,230 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:32" (1/1) ... [2024-11-28 03:06:32,306 INFO L138 Inliner]: procedures = 764, calls = 2435, calls flagged for inlining = 69, calls inlined = 13, statements flattened = 613 [2024-11-28 03:06:32,306 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:06:32,307 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:06:32,307 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:06:32,307 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:06:32,324 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:32" (1/1) ... [2024-11-28 03:06:32,324 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:32" (1/1) ... [2024-11-28 03:06:32,331 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:32" (1/1) ... [2024-11-28 03:06:32,499 INFO L175 MemorySlicer]: Split 292 memory accesses to 8 slices as follows [2, 238, 1, 2, 34, 8, 5, 2]. 82 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 6, 0, 0, 0, 0, 5, 0]. The 241 writes are split as follows [0, 232, 1, 1, 5, 1, 0, 1]. [2024-11-28 03:06:32,499 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:32" (1/1) ... [2024-11-28 03:06:32,499 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:32" (1/1) ... [2024-11-28 03:06:32,584 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:32" (1/1) ... [2024-11-28 03:06:32,591 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:32" (1/1) ... [2024-11-28 03:06:32,598 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:32" (1/1) ... [2024-11-28 03:06:32,617 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:32" (1/1) ... [2024-11-28 03:06:32,632 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:32" (1/1) ... [2024-11-28 03:06:32,650 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:06:32,653 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:06:32,655 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:06:32,655 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:06:32,656 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:32" (1/1) ... [2024-11-28 03:06:32,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:06:32,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:06:32,700 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:06:32,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:06:32,736 INFO L130 BoogieDeclarations]: Found specification of procedure memset_override_0_impl [2024-11-28 03:06:32,736 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_override_0_impl [2024-11-28 03:06:32,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-11-28 03:06:32,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-11-28 03:06:32,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-11-28 03:06:32,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-11-28 03:06:32,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2024-11-28 03:06:32,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2024-11-28 03:06:32,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2024-11-28 03:06:32,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2024-11-28 03:06:32,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 03:06:32,737 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-28 03:06:32,737 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-28 03:06:32,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-28 03:06:32,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-28 03:06:32,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-28 03:06:32,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-28 03:06:32,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-28 03:06:32,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-28 03:06:32,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-11-28 03:06:32,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2024-11-28 03:06:32,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 03:06:32,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 03:06:32,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 03:06:32,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 03:06:32,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-28 03:06:32,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-28 03:06:32,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-28 03:06:32,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-28 03:06:32,739 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-11-28 03:06:32,739 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-11-28 03:06:32,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 03:06:32,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 03:06:32,739 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2024-11-28 03:06:32,740 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2024-11-28 03:06:32,740 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_clear [2024-11-28 03:06:32,740 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_clear [2024-11-28 03:06:32,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 03:06:32,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:06:32,740 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2024-11-28 03:06:32,740 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2024-11-28 03:06:32,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 03:06:32,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 03:06:32,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-28 03:06:32,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-28 03:06:32,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-28 03:06:32,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-28 03:06:32,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-28 03:06:32,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-28 03:06:32,741 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2024-11-28 03:06:32,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2024-11-28 03:06:32,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:06:32,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:06:32,742 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-28 03:06:32,742 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-28 03:06:32,742 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2024-11-28 03:06:32,742 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2024-11-28 03:06:32,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-28 03:06:32,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-28 03:06:32,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-28 03:06:32,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-28 03:06:32,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-28 03:06:32,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-28 03:06:32,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-11-28 03:06:32,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2024-11-28 03:06:32,743 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 03:06:32,743 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 03:06:32,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 03:06:32,744 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2024-11-28 03:06:32,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2024-11-28 03:06:32,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 03:06:32,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 03:06:32,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 03:06:32,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-28 03:06:32,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-28 03:06:32,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-28 03:06:32,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-28 03:06:32,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-28 03:06:32,744 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2024-11-28 03:06:32,744 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2024-11-28 03:06:32,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 03:06:32,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-28 03:06:32,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-28 03:06:32,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-28 03:06:32,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-28 03:06:32,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-28 03:06:32,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-28 03:06:32,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-28 03:06:32,745 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2024-11-28 03:06:32,745 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2024-11-28 03:06:32,745 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2024-11-28 03:06:32,746 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2024-11-28 03:06:32,746 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-28 03:06:32,746 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-28 03:06:32,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 03:06:32,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 03:06:32,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 03:06:32,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 03:06:32,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-28 03:06:32,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-28 03:06:32,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-28 03:06:32,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-28 03:06:32,747 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2024-11-28 03:06:32,747 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2024-11-28 03:06:32,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:06:32,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 03:06:32,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 03:06:32,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 03:06:32,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 03:06:32,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-28 03:06:32,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-28 03:06:32,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-28 03:06:32,747 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2024-11-28 03:06:32,747 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2024-11-28 03:06:33,252 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:06:33,255 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:06:39,873 INFO L? ?]: Removed 148 outVars from TransFormulas that were not future-live. [2024-11-28 03:06:39,874 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:06:39,893 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:06:39,895 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 03:06:39,896 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:06:39 BoogieIcfgContainer [2024-11-28 03:06:39,896 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:06:39,899 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:06:39,899 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:06:39,906 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:06:39,906 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:06:27" (1/3) ... [2024-11-28 03:06:39,907 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d208fc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:06:39, skipping insertion in model container [2024-11-28 03:06:39,907 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:32" (2/3) ... [2024-11-28 03:06:39,907 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d208fc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:06:39, skipping insertion in model container [2024-11-28 03:06:39,907 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:06:39" (3/3) ... [2024-11-28 03:06:39,910 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_hash_table_clear_harness.i [2024-11-28 03:06:39,928 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:06:39,931 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_hash_table_clear_harness.i that has 19 procedures, 178 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-28 03:06:40,009 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:06:40,024 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;@209f734f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:06:40,024 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:06:40,030 INFO L276 IsEmpty]: Start isEmpty. Operand has 178 states, 117 states have (on average 1.1965811965811965) internal successors, (140), 118 states have internal predecessors, (140), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-11-28 03:06:40,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-28 03:06:40,048 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:06:40,051 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:06:40,051 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:06:40,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:40,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1685357161, now seen corresponding path program 1 times [2024-11-28 03:06:40,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:40,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749945269] [2024-11-28 03:06:40,068 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:40,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:48,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:49,074 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2024-11-28 03:06:49,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:49,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749945269] [2024-11-28 03:06:49,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749945269] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:06:49,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598185530] [2024-11-28 03:06:49,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:49,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:06:49,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:06:49,081 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:06:49,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:06:57,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:57,079 INFO L256 TraceCheckSpWp]: Trace formula consists of 4358 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 03:06:57,091 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:06:57,118 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-11-28 03:06:57,119 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:06:57,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598185530] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:06:57,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:06:57,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 03:06:57,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271376391] [2024-11-28 03:06:57,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:06:57,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 03:06:57,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:57,149 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:06:57,150 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:06:57,153 INFO L87 Difference]: Start difference. First operand has 178 states, 117 states have (on average 1.1965811965811965) internal successors, (140), 118 states have internal predecessors, (140), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Second operand has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-28 03:06:57,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:06:57,211 INFO L93 Difference]: Finished difference Result 351 states and 464 transitions. [2024-11-28 03:06:57,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:06:57,213 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 141 [2024-11-28 03:06:57,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:06:57,227 INFO L225 Difference]: With dead ends: 351 [2024-11-28 03:06:57,228 INFO L226 Difference]: Without dead ends: 171 [2024-11-28 03:06:57,238 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:06:57,243 INFO L435 NwaCegarLoop]: 217 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, 217 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:06:57,244 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:06:57,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-11-28 03:06:57,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2024-11-28 03:06:57,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 111 states have (on average 1.1531531531531531) internal successors, (128), 112 states have internal predecessors, (128), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-28 03:06:57,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 209 transitions. [2024-11-28 03:06:57,333 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 209 transitions. Word has length 141 [2024-11-28 03:06:57,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:06:57,336 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 209 transitions. [2024-11-28 03:06:57,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-28 03:06:57,337 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 209 transitions. [2024-11-28 03:06:57,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-28 03:06:57,341 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:06:57,342 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:06:57,366 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:06:57,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 03:06:57,543 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:06:57,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:57,544 INFO L85 PathProgramCache]: Analyzing trace with hash -960540209, now seen corresponding path program 1 times [2024-11-28 03:06:57,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:57,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528788464] [2024-11-28 03:06:57,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:57,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:07:04,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:07:05,763 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2024-11-28 03:07:05,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:07:05,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528788464] [2024-11-28 03:07:05,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528788464] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:07:05,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:07:05,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:07:05,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866204133] [2024-11-28 03:07:05,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:07:05,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:07:05,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:07:05,769 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:07:05,769 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:07:05,770 INFO L87 Difference]: Start difference. First operand 171 states and 209 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-28 03:07:05,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:07:05,954 INFO L93 Difference]: Finished difference Result 305 states and 373 transitions. [2024-11-28 03:07:05,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:07:05,959 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 141 [2024-11-28 03:07:05,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:07:05,962 INFO L225 Difference]: With dead ends: 305 [2024-11-28 03:07:05,965 INFO L226 Difference]: Without dead ends: 176 [2024-11-28 03:07:05,966 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:07:05,970 INFO L435 NwaCegarLoop]: 206 mSDtfsCounter, 0 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:07:05,971 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 820 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:07:05,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-11-28 03:07:05,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2024-11-28 03:07:05,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 115 states have (on average 1.1478260869565218) internal successors, (132), 116 states have internal predecessors, (132), 41 states have call successors, (41), 18 states have call predecessors, (41), 19 states have return successors, (41), 41 states have call predecessors, (41), 40 states have call successors, (41) [2024-11-28 03:07:06,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 214 transitions. [2024-11-28 03:07:06,002 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 214 transitions. Word has length 141 [2024-11-28 03:07:06,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:07:06,004 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 214 transitions. [2024-11-28 03:07:06,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-28 03:07:06,004 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 214 transitions. [2024-11-28 03:07:06,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-28 03:07:06,007 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:07:06,007 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2024-11-28 03:07:06,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:07:06,007 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:07:06,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:07:06,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1219190853, now seen corresponding path program 1 times [2024-11-28 03:07:06,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:07:06,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315839516] [2024-11-28 03:07:06,008 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:07:06,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:07:11,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:07:17,001 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2024-11-28 03:07:17,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:07:17,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315839516] [2024-11-28 03:07:17,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315839516] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:07:17,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908859440] [2024-11-28 03:07:17,003 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:07:17,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:07:17,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:07:17,005 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:07:17,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:07:23,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:07:23,392 INFO L256 TraceCheckSpWp]: Trace formula consists of 4362 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 03:07:23,403 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:07:23,556 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2024-11-28 03:07:23,557 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:07:23,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908859440] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:07:23,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:07:23,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2024-11-28 03:07:23,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109357526] [2024-11-28 03:07:23,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:07:23,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:07:23,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:07:23,559 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:07:23,560 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:07:23,560 INFO L87 Difference]: Start difference. First operand 176 states and 214 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-28 03:07:23,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:07:23,618 INFO L93 Difference]: Finished difference Result 247 states and 297 transitions. [2024-11-28 03:07:23,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:07:23,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 147 [2024-11-28 03:07:23,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:07:23,622 INFO L225 Difference]: With dead ends: 247 [2024-11-28 03:07:23,622 INFO L226 Difference]: Without dead ends: 177 [2024-11-28 03:07:23,623 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:07:23,624 INFO L435 NwaCegarLoop]: 208 mSDtfsCounter, 0 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:07:23,625 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 412 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:07:23,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-11-28 03:07:23,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2024-11-28 03:07:23,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 116 states have (on average 1.146551724137931) internal successors, (133), 117 states have internal predecessors, (133), 41 states have call successors, (41), 18 states have call predecessors, (41), 19 states have return successors, (41), 41 states have call predecessors, (41), 40 states have call successors, (41) [2024-11-28 03:07:23,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 215 transitions. [2024-11-28 03:07:23,643 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 215 transitions. Word has length 147 [2024-11-28 03:07:23,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:07:23,644 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 215 transitions. [2024-11-28 03:07:23,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-28 03:07:23,645 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 215 transitions. [2024-11-28 03:07:23,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-28 03:07:23,647 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:07:23,648 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2024-11-28 03:07:23,670 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 03:07:23,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:07:23,849 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:07:23,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:07:23,849 INFO L85 PathProgramCache]: Analyzing trace with hash 2054708089, now seen corresponding path program 1 times [2024-11-28 03:07:23,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:07:23,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123390956] [2024-11-28 03:07:23,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:07:23,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:07:29,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:07:34,283 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2024-11-28 03:07:34,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:07:34,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123390956] [2024-11-28 03:07:34,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123390956] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:07:34,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320260839] [2024-11-28 03:07:34,284 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:07:34,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:07:34,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:07:34,287 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:07:34,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:07:41,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:07:41,090 INFO L256 TraceCheckSpWp]: Trace formula consists of 4367 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-28 03:07:41,099 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:07:41,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 03:07:46,188 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-28 03:07:46,188 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:07:46,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320260839] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:07:46,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:07:46,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [10] total 17 [2024-11-28 03:07:46,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058021119] [2024-11-28 03:07:46,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:07:46,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:07:46,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:07:46,191 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:07:46,191 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2024-11-28 03:07:46,191 INFO L87 Difference]: Start difference. First operand 177 states and 215 transitions. Second operand has 13 states, 12 states have (on average 6.333333333333333) internal successors, (76), 11 states have internal predecessors, (76), 5 states have call successors, (26), 4 states have call predecessors, (26), 5 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2024-11-28 03:07:50,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:07:50,465 INFO L93 Difference]: Finished difference Result 317 states and 388 transitions. [2024-11-28 03:07:50,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 03:07:50,466 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.333333333333333) internal successors, (76), 11 states have internal predecessors, (76), 5 states have call successors, (26), 4 states have call predecessors, (26), 5 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) Word has length 147 [2024-11-28 03:07:50,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:07:50,471 INFO L225 Difference]: With dead ends: 317 [2024-11-28 03:07:50,475 INFO L226 Difference]: Without dead ends: 198 [2024-11-28 03:07:50,476 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 125 SyntacticMatches, 16 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2024-11-28 03:07:50,477 INFO L435 NwaCegarLoop]: 195 mSDtfsCounter, 122 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:07:50,478 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 1392 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-28 03:07:50,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-28 03:07:50,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 195. [2024-11-28 03:07:50,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 131 states have (on average 1.1450381679389312) internal successors, (150), 132 states have internal predecessors, (150), 41 states have call successors, (41), 21 states have call predecessors, (41), 22 states have return successors, (41), 41 states have call predecessors, (41), 40 states have call successors, (41) [2024-11-28 03:07:50,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 232 transitions. [2024-11-28 03:07:50,526 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 232 transitions. Word has length 147 [2024-11-28 03:07:50,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:07:50,529 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 232 transitions. [2024-11-28 03:07:50,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.333333333333333) internal successors, (76), 11 states have internal predecessors, (76), 5 states have call successors, (26), 4 states have call predecessors, (26), 5 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2024-11-28 03:07:50,530 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 232 transitions. [2024-11-28 03:07:50,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-28 03:07:50,535 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:07:50,535 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2024-11-28 03:07:50,562 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 03:07:50,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:07:50,736 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:07:50,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:07:50,736 INFO L85 PathProgramCache]: Analyzing trace with hash 402732533, now seen corresponding path program 1 times [2024-11-28 03:07:50,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:07:50,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612415966] [2024-11-28 03:07:50,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:07:50,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:07:56,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:07:58,275 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2024-11-28 03:07:58,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:07:58,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612415966] [2024-11-28 03:07:58,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612415966] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:07:58,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647763569] [2024-11-28 03:07:58,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:07:58,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:07:58,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:07:58,280 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:07:58,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:08:04,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:04,764 INFO L256 TraceCheckSpWp]: Trace formula consists of 4357 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:08:04,769 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:08:05,406 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-11-28 03:08:05,406 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:08:05,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647763569] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:08:05,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:08:05,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-28 03:08:05,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143900763] [2024-11-28 03:08:05,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:08:05,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:08:05,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:08:05,407 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:08:05,408 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:08:05,408 INFO L87 Difference]: Start difference. First operand 195 states and 232 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2024-11-28 03:08:06,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:08:06,510 INFO L93 Difference]: Finished difference Result 318 states and 385 transitions. [2024-11-28 03:08:06,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:08:06,511 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 147 [2024-11-28 03:08:06,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:08:06,514 INFO L225 Difference]: With dead ends: 318 [2024-11-28 03:08:06,514 INFO L226 Difference]: Without dead ends: 200 [2024-11-28 03:08:06,515 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:08:06,515 INFO L435 NwaCegarLoop]: 180 mSDtfsCounter, 207 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:08:06,516 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 688 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 03:08:06,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2024-11-28 03:08:06,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2024-11-28 03:08:06,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 134 states have (on average 1.1417910447761195) internal successors, (153), 136 states have internal predecessors, (153), 42 states have call successors, (42), 21 states have call predecessors, (42), 23 states have return successors, (44), 42 states have call predecessors, (44), 41 states have call successors, (44) [2024-11-28 03:08:06,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 239 transitions. [2024-11-28 03:08:06,536 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 239 transitions. Word has length 147 [2024-11-28 03:08:06,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:08:06,536 INFO L471 AbstractCegarLoop]: Abstraction has 200 states and 239 transitions. [2024-11-28 03:08:06,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2024-11-28 03:08:06,537 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 239 transitions. [2024-11-28 03:08:06,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-28 03:08:06,539 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:08:06,539 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2024-11-28 03:08:06,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 03:08:06,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:08:06,740 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:08:06,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:08:06,740 INFO L85 PathProgramCache]: Analyzing trace with hash 818721222, now seen corresponding path program 1 times [2024-11-28 03:08:06,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:08:06,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505878185] [2024-11-28 03:08:06,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:06,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:08:12,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:15,146 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2024-11-28 03:08:15,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:08:15,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505878185] [2024-11-28 03:08:15,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505878185] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:08:15,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557613480] [2024-11-28 03:08:15,147 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:15,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:08:15,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:08:15,149 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:08:15,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:08:23,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:23,105 INFO L256 TraceCheckSpWp]: Trace formula consists of 4386 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:08:23,110 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:08:24,624 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-11-28 03:08:24,624 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:08:24,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557613480] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:08:24,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:08:24,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-28 03:08:24,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086017292] [2024-11-28 03:08:24,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:08:24,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:08:24,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:08:24,626 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:08:24,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:08:24,627 INFO L87 Difference]: Start difference. First operand 200 states and 239 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 4 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-28 03:08:27,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:08:27,120 INFO L93 Difference]: Finished difference Result 300 states and 359 transitions. [2024-11-28 03:08:27,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:08:27,120 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 4 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 153 [2024-11-28 03:08:27,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:08:27,123 INFO L225 Difference]: With dead ends: 300 [2024-11-28 03:08:27,123 INFO L226 Difference]: Without dead ends: 193 [2024-11-28 03:08:27,124 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2024-11-28 03:08:27,125 INFO L435 NwaCegarLoop]: 173 mSDtfsCounter, 240 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:08:27,125 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 957 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-28 03:08:27,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-11-28 03:08:27,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2024-11-28 03:08:27,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 129 states have (on average 1.1317829457364341) internal successors, (146), 130 states have internal predecessors, (146), 41 states have call successors, (41), 21 states have call predecessors, (41), 22 states have return successors, (41), 41 states have call predecessors, (41), 40 states have call successors, (41) [2024-11-28 03:08:27,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 228 transitions. [2024-11-28 03:08:27,148 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 228 transitions. Word has length 153 [2024-11-28 03:08:27,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:08:27,149 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 228 transitions. [2024-11-28 03:08:27,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 4 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-28 03:08:27,149 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 228 transitions. [2024-11-28 03:08:27,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-28 03:08:27,152 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:08:27,152 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:08:27,176 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 03:08:27,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-28 03:08:27,353 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:08:27,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:08:27,354 INFO L85 PathProgramCache]: Analyzing trace with hash -411071593, now seen corresponding path program 1 times [2024-11-28 03:08:27,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:08:27,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272659421] [2024-11-28 03:08:27,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:27,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:08:33,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:35,960 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2024-11-28 03:08:35,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:08:35,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272659421] [2024-11-28 03:08:35,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272659421] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:08:35,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588516464] [2024-11-28 03:08:35,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:35,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:08:35,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:08:35,966 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:08:35,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 03:08:44,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:44,367 INFO L256 TraceCheckSpWp]: Trace formula consists of 4415 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 03:08:44,377 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:08:49,377 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((v_aws_hash_table_is_valid_~map.base_4 Int) (v_aws_hash_table_is_valid_~map.offset_4 Int)) (not (= (select (select |c_#memory_$Pointer$#5.offset| v_aws_hash_table_is_valid_~map.base_4) v_aws_hash_table_is_valid_~map.offset_4) 0))) (exists ((v_aws_hash_table_is_valid_~map.base_4 Int) (v_aws_hash_table_is_valid_~map.offset_4 Int)) (not (= (select (select |c_#memory_$Pointer$#5.base| v_aws_hash_table_is_valid_~map.base_4) v_aws_hash_table_is_valid_~map.offset_4) 0)))) is different from true [2024-11-28 03:08:57,919 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-28 03:08:57,920 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:08:57,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588516464] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:08:57,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:08:57,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-28 03:08:57,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601541590] [2024-11-28 03:08:57,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:08:57,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:08:57,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:08:57,922 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:08:57,922 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=105, Unknown=3, NotChecked=20, Total=156 [2024-11-28 03:08:57,922 INFO L87 Difference]: Start difference. First operand 193 states and 228 transitions. Second operand has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (24), 2 states have call predecessors, (24), 3 states have call successors, (24) [2024-11-28 03:08:58,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:08:58,678 INFO L93 Difference]: Finished difference Result 311 states and 375 transitions. [2024-11-28 03:08:58,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:08:58,679 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (24), 2 states have call predecessors, (24), 3 states have call successors, (24) Word has length 159 [2024-11-28 03:08:58,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:08:58,681 INFO L225 Difference]: With dead ends: 311 [2024-11-28 03:08:58,681 INFO L226 Difference]: Without dead ends: 193 [2024-11-28 03:08:58,682 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=28, Invalid=105, Unknown=3, NotChecked=20, Total=156 [2024-11-28 03:08:58,683 INFO L435 NwaCegarLoop]: 202 mSDtfsCounter, 2 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 211 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:08:58,683 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1145 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 211 Unchecked, 0.7s Time] [2024-11-28 03:08:58,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-11-28 03:08:58,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2024-11-28 03:08:58,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 129 states have (on average 1.124031007751938) internal successors, (145), 130 states have internal predecessors, (145), 41 states have call successors, (41), 21 states have call predecessors, (41), 22 states have return successors, (41), 41 states have call predecessors, (41), 40 states have call successors, (41) [2024-11-28 03:08:58,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 227 transitions. [2024-11-28 03:08:58,704 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 227 transitions. Word has length 159 [2024-11-28 03:08:58,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:08:58,704 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 227 transitions. [2024-11-28 03:08:58,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (24), 2 states have call predecessors, (24), 3 states have call successors, (24) [2024-11-28 03:08:58,705 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 227 transitions. [2024-11-28 03:08:58,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-28 03:08:58,707 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:08:58,707 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:08:58,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 03:08:58,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 03:08:58,908 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:08:58,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:08:58,909 INFO L85 PathProgramCache]: Analyzing trace with hash 559097067, now seen corresponding path program 1 times [2024-11-28 03:08:58,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:08:58,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654246286] [2024-11-28 03:08:58,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:58,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:09:06,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:09:09,051 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2024-11-28 03:09:09,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:09:09,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654246286] [2024-11-28 03:09:09,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654246286] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:09:09,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:09:09,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 03:09:09,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426935228] [2024-11-28 03:09:09,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:09:09,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:09:09,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:09:09,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:09:09,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:09:09,054 INFO L87 Difference]: Start difference. First operand 193 states and 227 transitions. Second operand has 8 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (28), 4 states have call predecessors, (28), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-28 03:09:09,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:09:09,884 INFO L93 Difference]: Finished difference Result 199 states and 232 transitions. [2024-11-28 03:09:09,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:09:09,887 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (28), 4 states have call predecessors, (28), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 173 [2024-11-28 03:09:09,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:09:09,890 INFO L225 Difference]: With dead ends: 199 [2024-11-28 03:09:09,891 INFO L226 Difference]: Without dead ends: 197 [2024-11-28 03:09:09,891 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:09:09,892 INFO L435 NwaCegarLoop]: 199 mSDtfsCounter, 23 mSDsluCounter, 1165 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 1364 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:09:09,892 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 1364 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:09:09,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-11-28 03:09:09,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2024-11-28 03:09:09,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 132 states have (on average 1.121212121212121) internal successors, (148), 133 states have internal predecessors, (148), 41 states have call successors, (41), 22 states have call predecessors, (41), 23 states have return successors, (41), 41 states have call predecessors, (41), 40 states have call successors, (41) [2024-11-28 03:09:09,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 230 transitions. [2024-11-28 03:09:09,920 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 230 transitions. Word has length 173 [2024-11-28 03:09:09,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:09:09,921 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 230 transitions. [2024-11-28 03:09:09,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (28), 4 states have call predecessors, (28), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-28 03:09:09,922 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 230 transitions. [2024-11-28 03:09:09,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-28 03:09:09,925 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:09:09,925 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:09:09,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 03:09:09,925 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:09:09,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:09:09,926 INFO L85 PathProgramCache]: Analyzing trace with hash 324659054, now seen corresponding path program 1 times [2024-11-28 03:09:09,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:09:09,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899349726] [2024-11-28 03:09:09,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:09:09,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:09:16,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:09:20,085 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 5 proven. 30 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2024-11-28 03:09:20,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:09:20,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899349726] [2024-11-28 03:09:20,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899349726] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:09:20,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246611132] [2024-11-28 03:09:20,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:09:20,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:09:20,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:09:20,088 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:09:20,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 03:09:28,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:09:28,228 INFO L256 TraceCheckSpWp]: Trace formula consists of 4492 conjuncts, 166 conjuncts are in the unsatisfiable core [2024-11-28 03:09:28,241 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:09:29,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:09:29,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 03:09:29,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2024-11-28 03:09:37,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:09:37,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:09:37,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 32 [2024-11-28 03:09:38,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:09:38,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:09:38,940 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:09:38,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 32 [2024-11-28 03:09:50,544 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 156 proven. 17 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-28 03:09:50,544 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:09:58,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246611132] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:09:58,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:09:58,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 33] total 38 [2024-11-28 03:09:58,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759754094] [2024-11-28 03:09:58,209 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:09:58,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-28 03:09:58,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:09:58,213 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-28 03:09:58,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=2388, Unknown=0, NotChecked=0, Total=2550 [2024-11-28 03:09:58,215 INFO L87 Difference]: Start difference. First operand 197 states and 230 transitions. Second operand has 38 states, 30 states have (on average 4.8) internal successors, (144), 33 states have internal predecessors, (144), 16 states have call successors, (55), 5 states have call predecessors, (55), 13 states have return successors, (50), 13 states have call predecessors, (50), 16 states have call successors, (50) [2024-11-28 03:10:25,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:10:25,636 INFO L93 Difference]: Finished difference Result 438 states and 501 transitions. [2024-11-28 03:10:25,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-28 03:10:25,636 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 30 states have (on average 4.8) internal successors, (144), 33 states have internal predecessors, (144), 16 states have call successors, (55), 5 states have call predecessors, (55), 13 states have return successors, (50), 13 states have call predecessors, (50), 16 states have call successors, (50) Word has length 179 [2024-11-28 03:10:25,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:10:25,639 INFO L225 Difference]: With dead ends: 438 [2024-11-28 03:10:25,639 INFO L226 Difference]: Without dead ends: 246 [2024-11-28 03:10:25,642 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 161 SyntacticMatches, 13 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1156 ImplicationChecksByTransitivity, 29.1s TimeCoverageRelationStatistics Valid=331, Invalid=5071, Unknown=0, NotChecked=0, Total=5402 [2024-11-28 03:10:25,642 INFO L435 NwaCegarLoop]: 185 mSDtfsCounter, 161 mSDsluCounter, 3920 mSDsCounter, 0 mSdLazyCounter, 2367 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 4105 SdHoareTripleChecker+Invalid, 2389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:10:25,643 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 4105 Invalid, 2389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2367 Invalid, 0 Unknown, 0 Unchecked, 18.8s Time] [2024-11-28 03:10:25,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2024-11-28 03:10:25,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 232. [2024-11-28 03:10:25,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 159 states have (on average 1.1069182389937107) internal successors, (176), 160 states have internal predecessors, (176), 43 states have call successors, (43), 28 states have call predecessors, (43), 29 states have return successors, (43), 43 states have call predecessors, (43), 42 states have call successors, (43) [2024-11-28 03:10:25,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 262 transitions. [2024-11-28 03:10:25,671 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 262 transitions. Word has length 179 [2024-11-28 03:10:25,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:10:25,672 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 262 transitions. [2024-11-28 03:10:25,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 30 states have (on average 4.8) internal successors, (144), 33 states have internal predecessors, (144), 16 states have call successors, (55), 5 states have call predecessors, (55), 13 states have return successors, (50), 13 states have call predecessors, (50), 16 states have call successors, (50) [2024-11-28 03:10:25,672 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 262 transitions. [2024-11-28 03:10:25,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-28 03:10:25,674 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:10:25,675 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 03:10:25,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 03:10:25,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-28 03:10:25,875 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:10:25,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:10:25,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1139047460, now seen corresponding path program 1 times [2024-11-28 03:10:25,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:10:25,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052375825] [2024-11-28 03:10:25,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:10:25,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:10:31,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:10:33,660 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 8 proven. 21 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2024-11-28 03:10:33,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:10:33,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052375825] [2024-11-28 03:10:33,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052375825] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:10:33,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168151459] [2024-11-28 03:10:33,660 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:10:33,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:10:33,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:10:33,662 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:10:33,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 03:10:40,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:10:40,825 INFO L256 TraceCheckSpWp]: Trace formula consists of 4500 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-11-28 03:10:40,832 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:10:42,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 03:10:42,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2024-11-28 03:10:42,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:10:46,536 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 128 proven. 3 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2024-11-28 03:10:46,536 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:10:50,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168151459] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:10:50,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:10:50,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 19] total 23 [2024-11-28 03:10:50,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918409744] [2024-11-28 03:10:50,285 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:10:50,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 03:10:50,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:10:50,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 03:10:50,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=681, Unknown=0, NotChecked=0, Total=756 [2024-11-28 03:10:50,287 INFO L87 Difference]: Start difference. First operand 232 states and 262 transitions. Second operand has 23 states, 20 states have (on average 6.8) internal successors, (136), 21 states have internal predecessors, (136), 9 states have call successors, (53), 3 states have call predecessors, (53), 9 states have return successors, (49), 8 states have call predecessors, (49), 9 states have call successors, (49) [2024-11-28 03:10:58,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:10:58,251 INFO L93 Difference]: Finished difference Result 449 states and 500 transitions. [2024-11-28 03:10:58,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-28 03:10:58,252 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 6.8) internal successors, (136), 21 states have internal predecessors, (136), 9 states have call successors, (53), 3 states have call predecessors, (53), 9 states have return successors, (49), 8 states have call predecessors, (49), 9 states have call successors, (49) Word has length 183 [2024-11-28 03:10:58,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:10:58,254 INFO L225 Difference]: With dead ends: 449 [2024-11-28 03:10:58,254 INFO L226 Difference]: Without dead ends: 266 [2024-11-28 03:10:58,256 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=124, Invalid=1208, Unknown=0, NotChecked=0, Total=1332 [2024-11-28 03:10:58,257 INFO L435 NwaCegarLoop]: 189 mSDtfsCounter, 34 mSDsluCounter, 2851 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 3040 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:10:58,257 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 3040 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2024-11-28 03:10:58,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-11-28 03:10:58,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 258. [2024-11-28 03:10:58,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 179 states have (on average 1.089385474860335) internal successors, (195), 180 states have internal predecessors, (195), 45 states have call successors, (45), 33 states have call predecessors, (45), 33 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-28 03:10:58,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 284 transitions. [2024-11-28 03:10:58,294 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 284 transitions. Word has length 183 [2024-11-28 03:10:58,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:10:58,294 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 284 transitions. [2024-11-28 03:10:58,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 6.8) internal successors, (136), 21 states have internal predecessors, (136), 9 states have call successors, (53), 3 states have call predecessors, (53), 9 states have return successors, (49), 8 states have call predecessors, (49), 9 states have call successors, (49) [2024-11-28 03:10:58,295 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 284 transitions. [2024-11-28 03:10:58,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-28 03:10:58,298 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:10:58,298 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:10:58,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 03:10:58,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 03:10:58,499 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:10:58,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:10:58,499 INFO L85 PathProgramCache]: Analyzing trace with hash -243264160, now seen corresponding path program 1 times [2024-11-28 03:10:58,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:10:58,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705393418] [2024-11-28 03:10:58,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:10:58,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:11:06,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:13,769 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 46 proven. 3 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2024-11-28 03:11:13,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:11:13,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705393418] [2024-11-28 03:11:13,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705393418] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:11:13,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738320935] [2024-11-28 03:11:13,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:13,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:11:13,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:11:13,773 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:11:13,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 03:11:37,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:37,378 INFO L256 TraceCheckSpWp]: Trace formula consists of 4595 conjuncts, 101 conjuncts are in the unsatisfiable core [2024-11-28 03:11:37,386 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:11:39,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 03:11:39,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 03:11:39,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 1 [2024-11-28 03:11:43,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2024-11-28 03:11:43,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2024-11-28 03:11:43,679 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 153 proven. 3 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-28 03:11:43,680 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:11:53,158 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 20 proven. 29 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2024-11-28 03:11:53,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738320935] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:11:53,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:11:53,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 22, 16] total 42 [2024-11-28 03:11:53,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538538452] [2024-11-28 03:11:53,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:11:53,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-28 03:11:53,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:11:53,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-28 03:11:53,162 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1609, Unknown=0, NotChecked=0, Total=1722 [2024-11-28 03:11:53,163 INFO L87 Difference]: Start difference. First operand 258 states and 284 transitions. Second operand has 42 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 32 states have internal predecessors, (167), 13 states have call successors, (67), 3 states have call predecessors, (67), 12 states have return successors, (65), 13 states have call predecessors, (65), 13 states have call successors, (65) [2024-11-28 03:12:04,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:12:04,622 INFO L93 Difference]: Finished difference Result 458 states and 506 transitions. [2024-11-28 03:12:04,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 03:12:04,623 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 32 states have internal predecessors, (167), 13 states have call successors, (67), 3 states have call predecessors, (67), 12 states have return successors, (65), 13 states have call predecessors, (65), 13 states have call successors, (65) Word has length 191 [2024-11-28 03:12:04,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:12:04,625 INFO L225 Difference]: With dead ends: 458 [2024-11-28 03:12:04,625 INFO L226 Difference]: Without dead ends: 277 [2024-11-28 03:12:04,627 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 351 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=150, Invalid=2106, Unknown=0, NotChecked=0, Total=2256 [2024-11-28 03:12:04,628 INFO L435 NwaCegarLoop]: 172 mSDtfsCounter, 15 mSDsluCounter, 5318 mSDsCounter, 0 mSdLazyCounter, 1378 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 5490 SdHoareTripleChecker+Invalid, 1386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:12:04,628 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 5490 Invalid, 1386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1378 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2024-11-28 03:12:04,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2024-11-28 03:12:04,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 258. [2024-11-28 03:12:04,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 179 states have (on average 1.0782122905027933) internal successors, (193), 180 states have internal predecessors, (193), 45 states have call successors, (45), 33 states have call predecessors, (45), 33 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-28 03:12:04,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 282 transitions. [2024-11-28 03:12:04,662 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 282 transitions. Word has length 191 [2024-11-28 03:12:04,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:12:04,663 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 282 transitions. [2024-11-28 03:12:04,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 33 states have (on average 5.0606060606060606) internal successors, (167), 32 states have internal predecessors, (167), 13 states have call successors, (67), 3 states have call predecessors, (67), 12 states have return successors, (65), 13 states have call predecessors, (65), 13 states have call successors, (65) [2024-11-28 03:12:04,663 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 282 transitions. [2024-11-28 03:12:04,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-28 03:12:04,665 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:12:04,665 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:12:04,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 03:12:04,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:04,866 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:12:04,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:04,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1078093760, now seen corresponding path program 1 times [2024-11-28 03:12:04,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:04,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862969363] [2024-11-28 03:12:04,867 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:12:04,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:13,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:12:15,909 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2024-11-28 03:12:15,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:12:15,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862969363] [2024-11-28 03:12:15,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862969363] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:12:15,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:12:15,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 03:12:15,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834556279] [2024-11-28 03:12:15,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:12:15,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 03:12:15,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:12:15,911 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 03:12:15,911 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:12:15,912 INFO L87 Difference]: Start difference. First operand 258 states and 282 transitions. Second operand has 9 states, 7 states have (on average 11.428571428571429) internal successors, (80), 6 states have internal predecessors, (80), 4 states have call successors, (30), 4 states have call predecessors, (30), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-28 03:12:16,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:12:16,664 INFO L93 Difference]: Finished difference Result 260 states and 283 transitions. [2024-11-28 03:12:16,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:12:16,665 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 11.428571428571429) internal successors, (80), 6 states have internal predecessors, (80), 4 states have call successors, (30), 4 states have call predecessors, (30), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 195 [2024-11-28 03:12:16,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:12:16,668 INFO L225 Difference]: With dead ends: 260 [2024-11-28 03:12:16,668 INFO L226 Difference]: Without dead ends: 258 [2024-11-28 03:12:16,668 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:12:16,669 INFO L435 NwaCegarLoop]: 199 mSDtfsCounter, 22 mSDsluCounter, 1361 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1560 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:12:16,669 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 1560 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:12:16,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-28 03:12:16,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2024-11-28 03:12:16,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 179 states have (on average 1.0726256983240223) internal successors, (192), 180 states have internal predecessors, (192), 45 states have call successors, (45), 33 states have call predecessors, (45), 33 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-28 03:12:16,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 281 transitions. [2024-11-28 03:12:16,707 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 281 transitions. Word has length 195 [2024-11-28 03:12:16,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:12:16,708 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 281 transitions. [2024-11-28 03:12:16,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 11.428571428571429) internal successors, (80), 6 states have internal predecessors, (80), 4 states have call successors, (30), 4 states have call predecessors, (30), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-28 03:12:16,708 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 281 transitions. [2024-11-28 03:12:16,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2024-11-28 03:12:16,710 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:12:16,710 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:12:16,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 03:12:16,710 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:12:16,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:16,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1519767446, now seen corresponding path program 1 times [2024-11-28 03:12:16,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:16,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65815493] [2024-11-28 03:12:16,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:12:16,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:29,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:12:50,237 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 66 proven. 11 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-28 03:12:50,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:12:50,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65815493] [2024-11-28 03:12:50,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65815493] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:12:50,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833499302] [2024-11-28 03:12:50,238 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:12:50,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:50,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:12:50,240 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:12:50,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 03:12:58,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:12:58,292 INFO L256 TraceCheckSpWp]: Trace formula consists of 4726 conjuncts, 94 conjuncts are in the unsatisfiable core [2024-11-28 03:12:58,306 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:13:01,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 03:13:01,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:13:01,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2024-11-28 03:13:07,496 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 156 proven. 6 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-11-28 03:13:07,496 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:13:12,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833499302] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:13:12,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:13:12,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 19] total 43 [2024-11-28 03:13:12,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532000670] [2024-11-28 03:13:12,885 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:13:12,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-28 03:13:12,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:13:12,887 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-28 03:13:12,888 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=2122, Unknown=0, NotChecked=0, Total=2256 [2024-11-28 03:13:12,888 INFO L87 Difference]: Start difference. First operand 258 states and 281 transitions. Second operand has 43 states, 37 states have (on average 5.27027027027027) internal successors, (195), 36 states have internal predecessors, (195), 16 states have call successors, (60), 5 states have call predecessors, (60), 14 states have return successors, (59), 17 states have call predecessors, (59), 16 states have call successors, (59) [2024-11-28 03:14:03,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:14:03,146 INFO L93 Difference]: Finished difference Result 495 states and 546 transitions. [2024-11-28 03:14:03,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-28 03:14:03,147 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 37 states have (on average 5.27027027027027) internal successors, (195), 36 states have internal predecessors, (195), 16 states have call successors, (60), 5 states have call predecessors, (60), 14 states have return successors, (59), 17 states have call predecessors, (59), 16 states have call successors, (59) Word has length 230 [2024-11-28 03:14:03,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:14:03,150 INFO L225 Difference]: With dead ends: 495 [2024-11-28 03:14:03,150 INFO L226 Difference]: Without dead ends: 293 [2024-11-28 03:14:03,154 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 359 SyntacticMatches, 1 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2505 ImplicationChecksByTransitivity, 30.2s TimeCoverageRelationStatistics Valid=567, Invalid=9135, Unknown=0, NotChecked=0, Total=9702 [2024-11-28 03:14:03,155 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 191 mSDsluCounter, 1707 mSDsCounter, 0 mSdLazyCounter, 4814 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 1794 SdHoareTripleChecker+Invalid, 4903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 4814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:14:03,156 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 1794 Invalid, 4903 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [89 Valid, 4814 Invalid, 0 Unknown, 0 Unchecked, 34.3s Time] [2024-11-28 03:14:03,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2024-11-28 03:14:03,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 283. [2024-11-28 03:14:03,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 197 states have (on average 1.0659898477157361) internal successors, (210), 200 states have internal predecessors, (210), 47 states have call successors, (47), 34 states have call predecessors, (47), 38 states have return successors, (52), 48 states have call predecessors, (52), 46 states have call successors, (52) [2024-11-28 03:14:03,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 309 transitions. [2024-11-28 03:14:03,205 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 309 transitions. Word has length 230 [2024-11-28 03:14:03,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:14:03,205 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 309 transitions. [2024-11-28 03:14:03,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 37 states have (on average 5.27027027027027) internal successors, (195), 36 states have internal predecessors, (195), 16 states have call successors, (60), 5 states have call predecessors, (60), 14 states have return successors, (59), 17 states have call predecessors, (59), 16 states have call successors, (59) [2024-11-28 03:14:03,206 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 309 transitions. [2024-11-28 03:14:03,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2024-11-28 03:14:03,208 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:14:03,208 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 03:14:03,237 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 03:14:03,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:14:03,409 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:14:03,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:14:03,409 INFO L85 PathProgramCache]: Analyzing trace with hash -2112997995, now seen corresponding path program 1 times [2024-11-28 03:14:03,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:14:03,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935420822] [2024-11-28 03:14:03,409 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:14:03,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:14:15,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:14:38,623 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 66 proven. 12 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2024-11-28 03:14:38,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:14:38,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935420822] [2024-11-28 03:14:38,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935420822] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:14:38,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594434564] [2024-11-28 03:14:38,624 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:14:38,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:14:38,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:14:38,626 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:14:38,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 03:14:46,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:14:46,822 INFO L256 TraceCheckSpWp]: Trace formula consists of 4747 conjuncts, 133 conjuncts are in the unsatisfiable core [2024-11-28 03:14:46,834 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:14:49,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2024-11-28 03:14:49,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 03:14:49,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:14:53,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:14:53,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 18 [2024-11-28 03:14:55,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:14:55,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 18 [2024-11-28 03:15:04,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 6 [2024-11-28 03:15:07,832 WARN L873 $PredicateComparison]: unable to prove that (and (exists ((v_aws_hash_table_clear_~map.offset_BEFORE_CALL_7 Int) (v_aws_hash_table_clear_~map.base_BEFORE_CALL_8 Int)) (= (select (select |c_#memory_$Pointer$#5.offset| v_aws_hash_table_clear_~map.base_BEFORE_CALL_8) v_aws_hash_table_clear_~map.offset_BEFORE_CALL_7) 0)) (exists ((memset_override_0_impl_~d~0.offset Int)) (and (= (store |c_old(#memory_int#4)| |c_my_memset_#in~s.base| (store (select |c_old(#memory_int#4)| |c_my_memset_#in~s.base|) memset_override_0_impl_~d~0.offset 0)) |c_#memory_int#4|) (<= |c_my_memset_#in~s.offset| memset_override_0_impl_~d~0.offset)))) is different from true [2024-11-28 03:15:07,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:15:07,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2024-11-28 03:15:08,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:15:08,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:15:08,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:15:08,650 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:15:08,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 37 [2024-11-28 03:15:18,268 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 146 proven. 41 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-11-28 03:15:18,268 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:15:27,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594434564] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:15:27,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:15:27,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 62 [2024-11-28 03:15:27,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079739562] [2024-11-28 03:15:27,177 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:15:27,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-28 03:15:27,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:15:27,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-28 03:15:27,180 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=3998, Unknown=27, NotChecked=128, Total=4422 [2024-11-28 03:15:27,181 INFO L87 Difference]: Start difference. First operand 283 states and 309 transitions. Second operand has 62 states, 53 states have (on average 3.7547169811320753) internal successors, (199), 51 states have internal predecessors, (199), 25 states have call successors, (60), 9 states have call predecessors, (60), 18 states have return successors, (59), 26 states have call predecessors, (59), 24 states have call successors, (59) [2024-11-28 03:16:51,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:51,025 INFO L93 Difference]: Finished difference Result 520 states and 563 transitions. [2024-11-28 03:16:51,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2024-11-28 03:16:51,026 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 53 states have (on average 3.7547169811320753) internal successors, (199), 51 states have internal predecessors, (199), 25 states have call successors, (60), 9 states have call predecessors, (60), 18 states have return successors, (59), 26 states have call predecessors, (59), 24 states have call successors, (59) Word has length 234 [2024-11-28 03:16:51,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:16:51,029 INFO L225 Difference]: With dead ends: 520 [2024-11-28 03:16:51,029 INFO L226 Difference]: Without dead ends: 437 [2024-11-28 03:16:51,036 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 209 SyntacticMatches, 19 SemanticMatches, 161 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 8291 ImplicationChecksByTransitivity, 71.6s TimeCoverageRelationStatistics Valid=1696, Invalid=24320, Unknown=70, NotChecked=320, Total=26406 [2024-11-28 03:16:51,037 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 659 mSDsluCounter, 1604 mSDsCounter, 0 mSdLazyCounter, 7290 mSolverCounterSat, 309 mSolverCounterUnsat, 41 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 1690 SdHoareTripleChecker+Invalid, 8040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 7290 IncrementalHoareTripleChecker+Invalid, 41 IncrementalHoareTripleChecker+Unknown, 400 IncrementalHoareTripleChecker+Unchecked, 48.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:16:51,037 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [676 Valid, 1690 Invalid, 8040 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [309 Valid, 7290 Invalid, 41 Unknown, 400 Unchecked, 48.1s Time] [2024-11-28 03:16:51,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2024-11-28 03:16:51,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 389. [2024-11-28 03:16:51,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 270 states have (on average 1.0666666666666667) internal successors, (288), 274 states have internal predecessors, (288), 64 states have call successors, (64), 46 states have call predecessors, (64), 54 states have return successors, (70), 68 states have call predecessors, (70), 61 states have call successors, (70) [2024-11-28 03:16:51,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 422 transitions. [2024-11-28 03:16:51,104 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 422 transitions. Word has length 234 [2024-11-28 03:16:51,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:16:51,105 INFO L471 AbstractCegarLoop]: Abstraction has 389 states and 422 transitions. [2024-11-28 03:16:51,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 53 states have (on average 3.7547169811320753) internal successors, (199), 51 states have internal predecessors, (199), 25 states have call successors, (60), 9 states have call predecessors, (60), 18 states have return successors, (59), 26 states have call predecessors, (59), 24 states have call successors, (59) [2024-11-28 03:16:51,105 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 422 transitions. [2024-11-28 03:16:51,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2024-11-28 03:16:51,106 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:51,106 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 03:16:51,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 03:16:51,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:16:51,307 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:16:51,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:51,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1710470513, now seen corresponding path program 2 times [2024-11-28 03:16:51,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:16:51,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321444480] [2024-11-28 03:16:51,307 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:16:51,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:17:05,865 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:17:05,865 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:17:24,910 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 55 proven. 15 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2024-11-28 03:17:24,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:17:24,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321444480] [2024-11-28 03:17:24,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321444480] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:17:24,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406246597] [2024-11-28 03:17:24,911 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:17:24,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:17:24,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:17:24,913 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:17:24,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c77d7889-057a-4d3c-bbd8-274cd380c5da/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process