./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/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_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/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_7d498cb6-6512-47e4-b9ee-dd9334fe5210/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 f75d0ef33a31287833e190b2032d34d4d62b29cbbc430e756e509abfe84aec7a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:42:27,532 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:42:27,649 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-28 04:42:27,659 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:42:27,660 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:42:27,706 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:42:27,708 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:42:27,709 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:42:27,709 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:42:27,710 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:42:27,711 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:42:27,711 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:42:27,712 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:42:27,712 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:42:27,712 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:42:27,712 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:42:27,712 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:42:27,713 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:42:27,713 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:42:27,713 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:42:27,713 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:42:27,713 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:42:27,713 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:42:27,713 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:42:27,713 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:42:27,713 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:42:27,713 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:42:27,714 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:42:27,714 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:42:27,714 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:42:27,714 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:42:27,714 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:42:27,714 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:42:27,714 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:42:27,714 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:42:27,716 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:42:27,716 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:42:27,716 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:42:27,716 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:42:27,716 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:42:27,716 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:42:27,717 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:42:27,717 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:42:27,717 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:42:27,717 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:42:27,717 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_7d498cb6-6512-47e4-b9ee-dd9334fe5210/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 -> f75d0ef33a31287833e190b2032d34d4d62b29cbbc430e756e509abfe84aec7a [2024-11-28 04:42:28,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:42:28,117 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:42:28,120 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:42:28,122 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:42:28,122 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:42:28,123 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness_negated.i [2024-11-28 04:42:31,773 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/data/70658fff4/551608fa2a7748e3bb04c6eae0d0b920/FLAG60ef2d3d3 [2024-11-28 04:42:32,640 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:42:32,641 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness_negated.i [2024-11-28 04:42:32,717 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/data/70658fff4/551608fa2a7748e3bb04c6eae0d0b920/FLAG60ef2d3d3 [2024-11-28 04:42:32,746 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/data/70658fff4/551608fa2a7748e3bb04c6eae0d0b920 [2024-11-28 04:42:32,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:42:32,750 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:42:32,752 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:42:32,754 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:42:32,760 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:42:32,761 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:42:32" (1/1) ... [2024-11-28 04:42:32,763 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4658cce9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:32, skipping insertion in model container [2024-11-28 04:42:32,764 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:42:32" (1/1) ... [2024-11-28 04:42:32,933 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:42:33,277 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_7d498cb6-6512-47e4-b9ee-dd9334fe5210/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness_negated.i[4493,4506] [2024-11-28 04:42:33,288 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_7d498cb6-6512-47e4-b9ee-dd9334fe5210/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness_negated.i[4553,4566] [2024-11-28 04:42:34,732 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:34,733 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:34,734 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:34,735 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:34,737 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:34,756 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:34,757 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:34,759 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:34,760 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:34,763 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:34,765 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:34,766 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:34,766 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:36,385 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:36,387 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:36,415 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:36,417 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:36,424 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:36,425 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:36,443 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:36,444 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:36,445 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:36,445 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:36,446 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:36,446 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:36,447 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:36,500 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_7d498cb6-6512-47e4-b9ee-dd9334fe5210/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness_negated.i[228314,228327] [2024-11-28 04:42:36,503 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:42:36,557 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:42:36,584 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_7d498cb6-6512-47e4-b9ee-dd9334fe5210/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness_negated.i[4493,4506] [2024-11-28 04:42:36,584 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_7d498cb6-6512-47e4-b9ee-dd9334fe5210/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness_negated.i[4553,4566] [2024-11-28 04:42:36,662 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:36,663 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:36,663 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:36,663 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:36,664 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:36,679 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:36,680 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:36,681 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:36,682 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:36,683 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:36,686 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:36,687 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:36,687 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:36,824 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7526-7537] [2024-11-28 04:42:36,996 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:36,997 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:37,005 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:37,006 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:37,009 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:37,010 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:37,020 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:37,022 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:37,023 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:37,025 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:37,026 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:37,027 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:37,027 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:42:37,059 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_7d498cb6-6512-47e4-b9ee-dd9334fe5210/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness_negated.i[228314,228327] [2024-11-28 04:42:37,060 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:42:37,477 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:42:37,478 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:37 WrapperNode [2024-11-28 04:42:37,478 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:42:37,480 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:42:37,480 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:42:37,480 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:42:37,490 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:37" (1/1) ... [2024-11-28 04:42:37,627 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:37" (1/1) ... [2024-11-28 04:42:37,733 INFO L138 Inliner]: procedures = 763, calls = 2450, calls flagged for inlining = 70, calls inlined = 20, statements flattened = 869 [2024-11-28 04:42:37,734 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:42:37,735 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:42:37,735 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:42:37,735 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:42:37,753 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:37" (1/1) ... [2024-11-28 04:42:37,753 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:37" (1/1) ... [2024-11-28 04:42:37,765 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:37" (1/1) ... [2024-11-28 04:42:37,879 INFO L175 MemorySlicer]: Split 315 memory accesses to 12 slices as follows [238, 2, 1, 3, 4, 6, 9, 36, 3, 6, 2, 5]. 76 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [6, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 5]. The 249 writes are split as follows [232, 0, 1, 1, 3, 2, 1, 3, 3, 2, 1, 0]. [2024-11-28 04:42:37,879 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:37" (1/1) ... [2024-11-28 04:42:37,879 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:37" (1/1) ... [2024-11-28 04:42:37,931 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:37" (1/1) ... [2024-11-28 04:42:37,934 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:37" (1/1) ... [2024-11-28 04:42:37,944 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:37" (1/1) ... [2024-11-28 04:42:37,980 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:37" (1/1) ... [2024-11-28 04:42:37,997 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:37" (1/1) ... [2024-11-28 04:42:38,013 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:42:38,014 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:42:38,014 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:42:38,014 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:42:38,016 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:37" (1/1) ... [2024-11-28 04:42:38,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:42:38,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:38,058 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:42:38,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:42:38,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-11-28 04:42:38,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-11-28 04:42:38,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-11-28 04:42:38,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-11-28 04:42:38,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2024-11-28 04:42:38,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2024-11-28 04:42:38,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2024-11-28 04:42:38,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2024-11-28 04:42:38,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2024-11-28 04:42:38,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2024-11-28 04:42:38,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2024-11-28 04:42:38,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#11 [2024-11-28 04:42:38,097 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_keys_eq [2024-11-28 04:42:38,097 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_keys_eq [2024-11-28 04:42:38,097 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2024-11-28 04:42:38,097 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2024-11-28 04:42:38,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 04:42:38,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-28 04:42:38,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-28 04:42:38,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-28 04:42:38,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-28 04:42:38,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-28 04:42:38,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-28 04:42:38,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-11-28 04:42:38,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2024-11-28 04:42:38,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2024-11-28 04:42:38,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#9 [2024-11-28 04:42:38,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#10 [2024-11-28 04:42:38,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#11 [2024-11-28 04:42:38,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:42:38,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:42:38,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 04:42:38,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 04:42:38,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-28 04:42:38,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-28 04:42:38,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-28 04:42:38,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-28 04:42:38,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-28 04:42:38,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-28 04:42:38,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-28 04:42:38,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-28 04:42:38,100 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-11-28 04:42:38,101 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-11-28 04:42:38,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 04:42:38,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 04:42:38,101 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2024-11-28 04:42:38,101 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2024-11-28 04:42:38,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 04:42:38,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:42:38,102 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2024-11-28 04:42:38,102 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2024-11-28 04:42:38,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 04:42:38,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 04:42:38,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-28 04:42:38,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-28 04:42:38,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-28 04:42:38,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-28 04:42:38,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-28 04:42:38,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-28 04:42:38,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-11-28 04:42:38,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2024-11-28 04:42:38,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2024-11-28 04:42:38,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#11 [2024-11-28 04:42:38,104 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2024-11-28 04:42:38,104 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2024-11-28 04:42:38,104 INFO L130 BoogieDeclarations]: Found specification of procedure s_safe_eq_check [2024-11-28 04:42:38,104 INFO L138 BoogieDeclarations]: Found implementation of procedure s_safe_eq_check [2024-11-28 04:42:38,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:42:38,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:42:38,104 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-28 04:42:38,104 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-28 04:42:38,104 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2024-11-28 04:42:38,104 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2024-11-28 04:42:38,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-28 04:42:38,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-28 04:42:38,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-28 04:42:38,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-28 04:42:38,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-28 04:42:38,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-28 04:42:38,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-11-28 04:42:38,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2024-11-28 04:42:38,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#8 [2024-11-28 04:42:38,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#9 [2024-11-28 04:42:38,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#10 [2024-11-28 04:42:38,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#11 [2024-11-28 04:42:38,105 INFO L130 BoogieDeclarations]: Found specification of procedure s_find_entry [2024-11-28 04:42:38,105 INFO L138 BoogieDeclarations]: Found implementation of procedure s_find_entry [2024-11-28 04:42:38,105 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 04:42:38,105 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 04:42:38,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 04:42:38,106 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2024-11-28 04:42:38,106 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2024-11-28 04:42:38,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 04:42:38,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 04:42:38,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 04:42:38,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-28 04:42:38,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-28 04:42:38,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-28 04:42:38,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-28 04:42:38,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-28 04:42:38,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-28 04:42:38,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2024-11-28 04:42:38,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2024-11-28 04:42:38,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2024-11-28 04:42:38,107 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2024-11-28 04:42:38,107 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2024-11-28 04:42:38,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 04:42:38,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-28 04:42:38,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-28 04:42:38,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-28 04:42:38,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-28 04:42:38,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-28 04:42:38,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-28 04:42:38,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-28 04:42:38,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2024-11-28 04:42:38,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2024-11-28 04:42:38,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#10 [2024-11-28 04:42:38,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#11 [2024-11-28 04:42:38,109 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2024-11-28 04:42:38,109 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2024-11-28 04:42:38,110 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2024-11-28 04:42:38,110 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2024-11-28 04:42:38,110 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-28 04:42:38,110 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-28 04:42:38,110 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_find [2024-11-28 04:42:38,110 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_find [2024-11-28 04:42:38,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 04:42:38,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 04:42:38,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 04:42:38,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 04:42:38,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-28 04:42:38,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-28 04:42:38,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-28 04:42:38,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-28 04:42:38,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-28 04:42:38,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-28 04:42:38,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-28 04:42:38,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-28 04:42:38,112 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_for [2024-11-28 04:42:38,112 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_for [2024-11-28 04:42:38,112 INFO L130 BoogieDeclarations]: Found specification of procedure uninterpreted_equals [2024-11-28 04:42:38,112 INFO L138 BoogieDeclarations]: Found implementation of procedure uninterpreted_equals [2024-11-28 04:42:38,112 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-28 04:42:38,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-28 04:42:38,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:42:38,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:42:38,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 04:42:38,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 04:42:38,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 04:42:38,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-28 04:42:38,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-28 04:42:38,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-28 04:42:38,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-28 04:42:38,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-28 04:42:38,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-28 04:42:38,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-28 04:42:38,113 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2024-11-28 04:42:38,113 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2024-11-28 04:42:38,795 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:42:38,799 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:42:38,864 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-28 04:42:38,892 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume false; [2024-11-28 04:42:38,892 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume !false; [2024-11-28 04:42:39,244 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-28 04:42:39,287 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume !false; [2024-11-28 04:42:39,287 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##7: assume false; [2024-11-28 04:42:39,296 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-28 04:42:39,324 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2024-11-28 04:42:39,324 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2024-11-28 04:42:45,597 INFO L? ?]: Removed 281 outVars from TransFormulas that were not future-live. [2024-11-28 04:42:45,599 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:42:45,626 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:42:45,626 INFO L312 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-28 04:42:45,627 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:42:45 BoogieIcfgContainer [2024-11-28 04:42:45,627 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:42:45,630 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:42:45,630 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:42:45,636 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:42:45,636 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:42:32" (1/3) ... [2024-11-28 04:42:45,637 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b6774ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:42:45, skipping insertion in model container [2024-11-28 04:42:45,637 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:37" (2/3) ... [2024-11-28 04:42:45,638 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b6774ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:42:45, skipping insertion in model container [2024-11-28 04:42:45,638 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:42:45" (3/3) ... [2024-11-28 04:42:45,639 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_hash_table_find_harness_negated.i [2024-11-28 04:42:45,659 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:42:45,661 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_hash_table_find_harness_negated.i that has 23 procedures, 264 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-28 04:42:45,748 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:42:45,763 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;@26855055, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:42:45,763 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:42:45,770 INFO L276 IsEmpty]: Start isEmpty. Operand has 264 states, 175 states have (on average 1.24) internal successors, (217), 173 states have internal predecessors, (217), 68 states have call successors, (68), 22 states have call predecessors, (68), 22 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-28 04:42:45,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-11-28 04:42:45,797 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:45,798 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 04:42:45,799 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:45,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:45,808 INFO L85 PathProgramCache]: Analyzing trace with hash -973770612, now seen corresponding path program 1 times [2024-11-28 04:42:45,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:45,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836143008] [2024-11-28 04:42:45,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:45,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:55,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:57,893 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2024-11-28 04:42:57,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:57,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836143008] [2024-11-28 04:42:57,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836143008] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:42:57,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936954228] [2024-11-28 04:42:57,896 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:57,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:57,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:57,902 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:42:57,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:43:07,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:07,543 INFO L256 TraceCheckSpWp]: Trace formula consists of 4655 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:43:07,560 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:07,710 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 213 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-28 04:43:07,711 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:43:07,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936954228] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:43:07,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:43:07,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2024-11-28 04:43:07,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487164986] [2024-11-28 04:43:07,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:43:07,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:43:07,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:07,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:43:07,762 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:43:07,769 INFO L87 Difference]: Start difference. First operand has 264 states, 175 states have (on average 1.24) internal successors, (217), 173 states have internal predecessors, (217), 68 states have call successors, (68), 22 states have call predecessors, (68), 22 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-28 04:43:08,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:08,089 INFO L93 Difference]: Finished difference Result 527 states and 759 transitions. [2024-11-28 04:43:08,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:43:08,093 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) Word has length 184 [2024-11-28 04:43:08,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:08,109 INFO L225 Difference]: With dead ends: 527 [2024-11-28 04:43:08,109 INFO L226 Difference]: Without dead ends: 262 [2024-11-28 04:43:08,120 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 185 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 04:43:08,125 INFO L435 NwaCegarLoop]: 341 mSDtfsCounter, 0 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1360 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:08,126 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1360 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:43:08,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2024-11-28 04:43:08,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2024-11-28 04:43:08,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 170 states have (on average 1.2176470588235293) internal successors, (207), 171 states have internal predecessors, (207), 68 states have call successors, (68), 22 states have call predecessors, (68), 23 states have return successors, (68), 68 states have call predecessors, (68), 67 states have call successors, (68) [2024-11-28 04:43:08,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 343 transitions. [2024-11-28 04:43:08,211 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 343 transitions. Word has length 184 [2024-11-28 04:43:08,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:08,213 INFO L471 AbstractCegarLoop]: Abstraction has 262 states and 343 transitions. [2024-11-28 04:43:08,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-28 04:43:08,214 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 343 transitions. [2024-11-28 04:43:08,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-28 04:43:08,219 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:08,220 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:43:08,243 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:43:08,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 04:43:08,421 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:08,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:08,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1235020576, now seen corresponding path program 1 times [2024-11-28 04:43:08,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:08,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539390815] [2024-11-28 04:43:08,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:08,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:16,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:21,427 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 397 trivial. 0 not checked. [2024-11-28 04:43:21,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:21,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539390815] [2024-11-28 04:43:21,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539390815] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:21,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134075890] [2024-11-28 04:43:21,428 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:21,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:21,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:21,434 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:21,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:43:28,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:28,728 INFO L256 TraceCheckSpWp]: Trace formula consists of 4663 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-28 04:43:28,740 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:29,230 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 04:43:33,633 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 304 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-28 04:43:33,633 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:43:33,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134075890] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:43:33,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:43:33,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 15 [2024-11-28 04:43:33,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292223835] [2024-11-28 04:43:33,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:43:33,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:43:33,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:33,636 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:43:33,637 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:43:33,637 INFO L87 Difference]: Start difference. First operand 262 states and 343 transitions. Second operand has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 10 states have internal predecessors, (100), 5 states have call successors, (33), 3 states have call predecessors, (33), 5 states have return successors, (30), 6 states have call predecessors, (30), 5 states have call successors, (30) [2024-11-28 04:43:40,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:40,120 INFO L93 Difference]: Finished difference Result 567 states and 733 transitions. [2024-11-28 04:43:40,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 04:43:40,121 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 10 states have internal predecessors, (100), 5 states have call successors, (33), 3 states have call predecessors, (33), 5 states have return successors, (30), 6 states have call predecessors, (30), 5 states have call successors, (30) Word has length 196 [2024-11-28 04:43:40,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:40,127 INFO L225 Difference]: With dead ends: 567 [2024-11-28 04:43:40,128 INFO L226 Difference]: Without dead ends: 326 [2024-11-28 04:43:40,129 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 176 SyntacticMatches, 16 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2024-11-28 04:43:40,130 INFO L435 NwaCegarLoop]: 362 mSDtfsCounter, 266 mSDsluCounter, 2000 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 2362 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:40,131 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 2362 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2024-11-28 04:43:40,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2024-11-28 04:43:40,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 323. [2024-11-28 04:43:40,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 214 states have (on average 1.205607476635514) internal successors, (258), 216 states have internal predecessors, (258), 74 states have call successors, (74), 31 states have call predecessors, (74), 34 states have return successors, (77), 75 states have call predecessors, (77), 73 states have call successors, (77) [2024-11-28 04:43:40,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 409 transitions. [2024-11-28 04:43:40,191 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 409 transitions. Word has length 196 [2024-11-28 04:43:40,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:40,192 INFO L471 AbstractCegarLoop]: Abstraction has 323 states and 409 transitions. [2024-11-28 04:43:40,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 10 states have internal predecessors, (100), 5 states have call successors, (33), 3 states have call predecessors, (33), 5 states have return successors, (30), 6 states have call predecessors, (30), 5 states have call successors, (30) [2024-11-28 04:43:40,193 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 409 transitions. [2024-11-28 04:43:40,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-28 04:43:40,197 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:40,198 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 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] [2024-11-28 04:43:40,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 04:43:40,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:40,399 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:40,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:40,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1749343456, now seen corresponding path program 1 times [2024-11-28 04:43:40,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:40,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379395881] [2024-11-28 04:43:40,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:40,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:46,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:48,136 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 397 trivial. 0 not checked. [2024-11-28 04:43:48,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:48,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379395881] [2024-11-28 04:43:48,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379395881] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:48,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476117318] [2024-11-28 04:43:48,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:48,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:48,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:48,139 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:48,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:43:55,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:55,296 INFO L256 TraceCheckSpWp]: Trace formula consists of 4653 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:43:55,304 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:56,125 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2024-11-28 04:43:56,125 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:43:56,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476117318] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:43:56,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:43:56,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-28 04:43:56,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964575249] [2024-11-28 04:43:56,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:43:56,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:43:56,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:56,132 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:43:56,132 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:43:56,133 INFO L87 Difference]: Start difference. First operand 323 states and 409 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2024-11-28 04:43:57,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:57,590 INFO L93 Difference]: Finished difference Result 574 states and 740 transitions. [2024-11-28 04:43:57,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:43:57,592 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 196 [2024-11-28 04:43:57,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:57,596 INFO L225 Difference]: With dead ends: 574 [2024-11-28 04:43:57,597 INFO L226 Difference]: Without dead ends: 328 [2024-11-28 04:43:57,598 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 193 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 04:43:57,599 INFO L435 NwaCegarLoop]: 306 mSDtfsCounter, 342 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:57,600 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 1173 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 04:43:57,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2024-11-28 04:43:57,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 325. [2024-11-28 04:43:57,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 215 states have (on average 1.2046511627906977) internal successors, (259), 217 states have internal predecessors, (259), 75 states have call successors, (75), 31 states have call predecessors, (75), 34 states have return successors, (78), 76 states have call predecessors, (78), 74 states have call successors, (78) [2024-11-28 04:43:57,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 412 transitions. [2024-11-28 04:43:57,657 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 412 transitions. Word has length 196 [2024-11-28 04:43:57,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:57,658 INFO L471 AbstractCegarLoop]: Abstraction has 325 states and 412 transitions. [2024-11-28 04:43:57,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2024-11-28 04:43:57,658 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 412 transitions. [2024-11-28 04:43:57,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-28 04:43:57,662 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:57,662 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:43:57,679 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 04:43:57,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:57,863 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:57,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:57,864 INFO L85 PathProgramCache]: Analyzing trace with hash 208222240, now seen corresponding path program 1 times [2024-11-28 04:43:57,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:57,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369211735] [2024-11-28 04:43:57,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:57,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:44:04,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:44:07,558 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2024-11-28 04:44:07,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:44:07,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369211735] [2024-11-28 04:44:07,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369211735] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:44:07,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659611698] [2024-11-28 04:44:07,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:44:07,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:44:07,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:44:07,564 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:44:07,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:44:15,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:44:15,032 INFO L256 TraceCheckSpWp]: Trace formula consists of 4711 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 04:44:15,039 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:44:16,340 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 215 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2024-11-28 04:44:16,341 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:44:16,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659611698] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:44:16,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:44:16,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 15 [2024-11-28 04:44:16,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022154570] [2024-11-28 04:44:16,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:44:16,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 04:44:16,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:44:16,343 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 04:44:16,344 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:44:16,344 INFO L87 Difference]: Start difference. First operand 325 states and 412 transitions. Second operand has 10 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2024-11-28 04:44:18,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:44:18,838 INFO L93 Difference]: Finished difference Result 519 states and 678 transitions. [2024-11-28 04:44:18,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 04:44:18,838 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) Word has length 208 [2024-11-28 04:44:18,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:44:18,844 INFO L225 Difference]: With dead ends: 519 [2024-11-28 04:44:18,844 INFO L226 Difference]: Without dead ends: 337 [2024-11-28 04:44:18,845 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:44:18,846 INFO L435 NwaCegarLoop]: 312 mSDtfsCounter, 14 mSDsluCounter, 2420 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 2732 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:44:18,847 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 2732 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-28 04:44:18,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2024-11-28 04:44:18,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 331. [2024-11-28 04:44:18,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 219 states have (on average 1.2009132420091324) internal successors, (263), 222 states have internal predecessors, (263), 75 states have call successors, (75), 31 states have call predecessors, (75), 36 states have return successors, (87), 77 states have call predecessors, (87), 74 states have call successors, (87) [2024-11-28 04:44:18,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 425 transitions. [2024-11-28 04:44:18,899 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 425 transitions. Word has length 208 [2024-11-28 04:44:18,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:44:18,900 INFO L471 AbstractCegarLoop]: Abstraction has 331 states and 425 transitions. [2024-11-28 04:44:18,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2024-11-28 04:44:18,900 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 425 transitions. [2024-11-28 04:44:18,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-28 04:44:18,906 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:44:18,906 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:44:18,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 04:44:19,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:44:19,107 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:44:19,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:44:19,107 INFO L85 PathProgramCache]: Analyzing trace with hash 576914252, now seen corresponding path program 1 times [2024-11-28 04:44:19,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:44:19,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305559604] [2024-11-28 04:44:19,108 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:44:19,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:44:25,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:44:28,143 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2024-11-28 04:44:28,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:44:28,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305559604] [2024-11-28 04:44:28,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305559604] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:44:28,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121048350] [2024-11-28 04:44:28,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:44:28,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:44:28,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:44:28,146 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:44:28,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:44:36,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:44:36,155 INFO L256 TraceCheckSpWp]: Trace formula consists of 4743 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 04:44:36,166 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:44:37,304 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 245 proven. 0 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2024-11-28 04:44:37,304 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:44:37,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121048350] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:44:37,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:44:37,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2024-11-28 04:44:37,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210283249] [2024-11-28 04:44:37,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:44:37,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:44:37,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:44:37,307 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:44:37,308 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-11-28 04:44:37,308 INFO L87 Difference]: Start difference. First operand 331 states and 425 transitions. Second operand has 9 states, 8 states have (on average 13.25) internal successors, (106), 7 states have internal predecessors, (106), 3 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (33), 4 states have call predecessors, (33), 3 states have call successors, (33) [2024-11-28 04:44:38,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:44:38,987 INFO L93 Difference]: Finished difference Result 589 states and 766 transitions. [2024-11-28 04:44:38,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:44:38,988 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 13.25) internal successors, (106), 7 states have internal predecessors, (106), 3 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (33), 4 states have call predecessors, (33), 3 states have call successors, (33) Word has length 215 [2024-11-28 04:44:38,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:44:38,993 INFO L225 Difference]: With dead ends: 589 [2024-11-28 04:44:38,993 INFO L226 Difference]: Without dead ends: 335 [2024-11-28 04:44:38,995 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-11-28 04:44:38,996 INFO L435 NwaCegarLoop]: 317 mSDtfsCounter, 0 mSDsluCounter, 2171 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2488 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:44:38,997 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2488 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-28 04:44:38,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2024-11-28 04:44:39,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 331. [2024-11-28 04:44:39,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 219 states have (on average 1.2009132420091324) internal successors, (263), 222 states have internal predecessors, (263), 75 states have call successors, (75), 31 states have call predecessors, (75), 36 states have return successors, (86), 77 states have call predecessors, (86), 74 states have call successors, (86) [2024-11-28 04:44:39,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 424 transitions. [2024-11-28 04:44:39,055 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 424 transitions. Word has length 215 [2024-11-28 04:44:39,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:44:39,055 INFO L471 AbstractCegarLoop]: Abstraction has 331 states and 424 transitions. [2024-11-28 04:44:39,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 13.25) internal successors, (106), 7 states have internal predecessors, (106), 3 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (33), 4 states have call predecessors, (33), 3 states have call successors, (33) [2024-11-28 04:44:39,060 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 424 transitions. [2024-11-28 04:44:39,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-28 04:44:39,065 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:44:39,065 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:44:39,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 04:44:39,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:44:39,266 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:44:39,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:44:39,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1728921064, now seen corresponding path program 2 times [2024-11-28 04:44:39,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:44:39,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609612566] [2024-11-28 04:44:39,267 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:44:39,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:44:45,684 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:44:45,684 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:44:50,697 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 434 trivial. 0 not checked. [2024-11-28 04:44:50,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:44:50,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609612566] [2024-11-28 04:44:50,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609612566] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:44:50,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:44:50,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-28 04:44:50,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815883846] [2024-11-28 04:44:50,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:44:50,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 04:44:50,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:44:50,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 04:44:50,700 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:44:50,700 INFO L87 Difference]: Start difference. First operand 331 states and 424 transitions. Second operand has 13 states, 11 states have (on average 6.545454545454546) internal successors, (72), 10 states have internal predecessors, (72), 7 states have call successors, (32), 4 states have call predecessors, (32), 3 states have return successors, (29), 6 states have call predecessors, (29), 6 states have call successors, (29) [2024-11-28 04:44:53,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:44:53,663 INFO L93 Difference]: Finished difference Result 508 states and 661 transitions. [2024-11-28 04:44:53,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:44:53,664 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.545454545454546) internal successors, (72), 10 states have internal predecessors, (72), 7 states have call successors, (32), 4 states have call predecessors, (32), 3 states have return successors, (29), 6 states have call predecessors, (29), 6 states have call successors, (29) Word has length 222 [2024-11-28 04:44:53,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:44:53,668 INFO L225 Difference]: With dead ends: 508 [2024-11-28 04:44:53,668 INFO L226 Difference]: Without dead ends: 333 [2024-11-28 04:44:53,670 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:44:53,671 INFO L435 NwaCegarLoop]: 322 mSDtfsCounter, 54 mSDsluCounter, 3236 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 3558 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:44:53,671 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 3558 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-28 04:44:53,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2024-11-28 04:44:53,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 331. [2024-11-28 04:44:53,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 219 states have (on average 1.2009132420091324) internal successors, (263), 222 states have internal predecessors, (263), 75 states have call successors, (75), 31 states have call predecessors, (75), 36 states have return successors, (85), 77 states have call predecessors, (85), 74 states have call successors, (85) [2024-11-28 04:44:53,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 423 transitions. [2024-11-28 04:44:53,704 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 423 transitions. Word has length 222 [2024-11-28 04:44:53,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:44:53,704 INFO L471 AbstractCegarLoop]: Abstraction has 331 states and 423 transitions. [2024-11-28 04:44:53,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.545454545454546) internal successors, (72), 10 states have internal predecessors, (72), 7 states have call successors, (32), 4 states have call predecessors, (32), 3 states have return successors, (29), 6 states have call predecessors, (29), 6 states have call successors, (29) [2024-11-28 04:44:53,705 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 423 transitions. [2024-11-28 04:44:53,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-11-28 04:44:53,708 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:44:53,709 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:44:53,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 04:44:53,709 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:44:53,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:44:53,710 INFO L85 PathProgramCache]: Analyzing trace with hash -371889576, now seen corresponding path program 1 times [2024-11-28 04:44:53,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:44:53,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696396712] [2024-11-28 04:44:53,710 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:44:53,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:44:59,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:03,871 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2024-11-28 04:45:03,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:03,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696396712] [2024-11-28 04:45:03,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696396712] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:45:03,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:45:03,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-28 04:45:03,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660821610] [2024-11-28 04:45:03,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:45:03,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 04:45:03,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:03,873 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 04:45:03,873 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:45:03,873 INFO L87 Difference]: Start difference. First operand 331 states and 423 transitions. Second operand has 12 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 10 states have internal predecessors, (74), 5 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (29), 5 states have call predecessors, (29), 5 states have call successors, (29) [2024-11-28 04:45:07,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:07,123 INFO L93 Difference]: Finished difference Result 519 states and 676 transitions. [2024-11-28 04:45:07,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 04:45:07,124 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 10 states have internal predecessors, (74), 5 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (29), 5 states have call predecessors, (29), 5 states have call successors, (29) Word has length 229 [2024-11-28 04:45:07,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:07,128 INFO L225 Difference]: With dead ends: 519 [2024-11-28 04:45:07,129 INFO L226 Difference]: Without dead ends: 334 [2024-11-28 04:45:07,130 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:45:07,131 INFO L435 NwaCegarLoop]: 325 mSDtfsCounter, 41 mSDsluCounter, 2266 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 2591 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:07,131 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 2591 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-28 04:45:07,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2024-11-28 04:45:07,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 331. [2024-11-28 04:45:07,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 219 states have (on average 1.1963470319634704) internal successors, (262), 222 states have internal predecessors, (262), 75 states have call successors, (75), 31 states have call predecessors, (75), 36 states have return successors, (85), 77 states have call predecessors, (85), 74 states have call successors, (85) [2024-11-28 04:45:07,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 422 transitions. [2024-11-28 04:45:07,162 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 422 transitions. Word has length 229 [2024-11-28 04:45:07,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:07,163 INFO L471 AbstractCegarLoop]: Abstraction has 331 states and 422 transitions. [2024-11-28 04:45:07,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 10 states have internal predecessors, (74), 5 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (29), 5 states have call predecessors, (29), 5 states have call successors, (29) [2024-11-28 04:45:07,163 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 422 transitions. [2024-11-28 04:45:07,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-11-28 04:45:07,167 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:07,167 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:45:07,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 04:45:07,168 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:07,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:07,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1873689878, now seen corresponding path program 1 times [2024-11-28 04:45:07,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:07,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077243952] [2024-11-28 04:45:07,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:07,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:12,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:14,041 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2024-11-28 04:45:14,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:14,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077243952] [2024-11-28 04:45:14,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077243952] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:45:14,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:45:14,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:45:14,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673348162] [2024-11-28 04:45:14,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:45:14,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:45:14,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:14,044 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:45:14,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:45:14,045 INFO L87 Difference]: Start difference. First operand 331 states and 422 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (29), 3 states have call predecessors, (29), 4 states have call successors, (29) [2024-11-28 04:45:14,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:14,507 INFO L93 Difference]: Finished difference Result 513 states and 666 transitions. [2024-11-28 04:45:14,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:45:14,508 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (29), 3 states have call predecessors, (29), 4 states have call successors, (29) Word has length 229 [2024-11-28 04:45:14,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:14,516 INFO L225 Difference]: With dead ends: 513 [2024-11-28 04:45:14,516 INFO L226 Difference]: Without dead ends: 324 [2024-11-28 04:45:14,518 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:45:14,519 INFO L435 NwaCegarLoop]: 333 mSDtfsCounter, 34 mSDsluCounter, 1559 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 1892 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:14,519 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 1892 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:45:14,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2024-11-28 04:45:14,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 324. [2024-11-28 04:45:14,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 214 states have (on average 1.191588785046729) internal successors, (255), 216 states have internal predecessors, (255), 74 states have call successors, (74), 31 states have call predecessors, (74), 35 states have return successors, (81), 76 states have call predecessors, (81), 73 states have call successors, (81) [2024-11-28 04:45:14,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 410 transitions. [2024-11-28 04:45:14,552 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 410 transitions. Word has length 229 [2024-11-28 04:45:14,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:14,553 INFO L471 AbstractCegarLoop]: Abstraction has 324 states and 410 transitions. [2024-11-28 04:45:14,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (29), 3 states have call predecessors, (29), 4 states have call successors, (29) [2024-11-28 04:45:14,553 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 410 transitions. [2024-11-28 04:45:14,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2024-11-28 04:45:14,556 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:14,556 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:45:14,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 04:45:14,557 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:14,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:14,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1741447206, now seen corresponding path program 1 times [2024-11-28 04:45:14,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:14,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280439719] [2024-11-28 04:45:14,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:14,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:22,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:26,754 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 3 proven. 48 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2024-11-28 04:45:26,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:26,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280439719] [2024-11-28 04:45:26,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280439719] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:45:26,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481948457] [2024-11-28 04:45:26,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:26,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:26,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:45:26,759 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:45:26,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:45:35,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:35,514 INFO L256 TraceCheckSpWp]: Trace formula consists of 4863 conjuncts, 113 conjuncts are in the unsatisfiable core [2024-11-28 04:45:35,528 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:45:36,446 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 04:45:36,475 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 04:45:48,121 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 349 proven. 28 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-28 04:45:48,121 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:45:57,082 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 61 proven. 14 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2024-11-28 04:45:57,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481948457] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:45:57,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:45:57,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 28, 15] total 44 [2024-11-28 04:45:57,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458544012] [2024-11-28 04:45:57,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:45:57,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-28 04:45:57,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:57,086 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-28 04:45:57,086 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1759, Unknown=0, NotChecked=0, Total=1892 [2024-11-28 04:45:57,087 INFO L87 Difference]: Start difference. First operand 324 states and 410 transitions. Second operand has 44 states, 36 states have (on average 5.416666666666667) internal successors, (195), 34 states have internal predecessors, (195), 15 states have call successors, (84), 5 states have call predecessors, (84), 14 states have return successors, (80), 15 states have call predecessors, (80), 15 states have call successors, (80) [2024-11-28 04:46:26,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:46:26,302 INFO L93 Difference]: Finished difference Result 647 states and 826 transitions. [2024-11-28 04:46:26,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-28 04:46:26,304 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 36 states have (on average 5.416666666666667) internal successors, (195), 34 states have internal predecessors, (195), 15 states have call successors, (84), 5 states have call predecessors, (84), 14 states have return successors, (80), 15 states have call predecessors, (80), 15 states have call successors, (80) Word has length 242 [2024-11-28 04:46:26,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:46:26,306 INFO L225 Difference]: With dead ends: 647 [2024-11-28 04:46:26,306 INFO L226 Difference]: Without dead ends: 336 [2024-11-28 04:46:26,309 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 428 SyntacticMatches, 21 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 864 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=236, Invalid=3304, Unknown=0, NotChecked=0, Total=3540 [2024-11-28 04:46:26,310 INFO L435 NwaCegarLoop]: 329 mSDtfsCounter, 220 mSDsluCounter, 8647 mSDsCounter, 0 mSdLazyCounter, 3446 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 8976 SdHoareTripleChecker+Invalid, 3487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 3446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:46:26,310 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 8976 Invalid, 3487 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [41 Valid, 3446 Invalid, 0 Unknown, 0 Unchecked, 24.9s Time] [2024-11-28 04:46:26,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2024-11-28 04:46:26,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 334. [2024-11-28 04:46:26,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 221 states have (on average 1.1809954751131222) internal successors, (261), 224 states have internal predecessors, (261), 74 states have call successors, (74), 31 states have call predecessors, (74), 38 states have return successors, (89), 78 states have call predecessors, (89), 73 states have call successors, (89) [2024-11-28 04:46:26,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 424 transitions. [2024-11-28 04:46:26,347 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 424 transitions. Word has length 242 [2024-11-28 04:46:26,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:46:26,347 INFO L471 AbstractCegarLoop]: Abstraction has 334 states and 424 transitions. [2024-11-28 04:46:26,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 36 states have (on average 5.416666666666667) internal successors, (195), 34 states have internal predecessors, (195), 15 states have call successors, (84), 5 states have call predecessors, (84), 14 states have return successors, (80), 15 states have call predecessors, (80), 15 states have call successors, (80) [2024-11-28 04:46:26,348 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 424 transitions. [2024-11-28 04:46:26,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2024-11-28 04:46:26,350 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:46:26,350 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:46:26,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 04:46:26,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:26,551 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:46:26,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:26,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1738297274, now seen corresponding path program 1 times [2024-11-28 04:46:26,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:26,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518102261] [2024-11-28 04:46:26,552 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:26,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:33,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:35,726 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 6 proven. 35 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2024-11-28 04:46:35,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:35,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518102261] [2024-11-28 04:46:35,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518102261] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:46:35,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112753397] [2024-11-28 04:46:35,727 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:35,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:35,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:46:35,729 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:46:35,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:46:45,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:45,075 INFO L256 TraceCheckSpWp]: Trace formula consists of 4871 conjuncts, 133 conjuncts are in the unsatisfiable core [2024-11-28 04:46:45,087 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:46:46,972 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 04:46:46,990 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 04:46:47,004 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 04:46:51,044 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 253 proven. 4 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2024-11-28 04:46:51,044 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:46:56,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112753397] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:46:56,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:46:56,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 19] total 23 [2024-11-28 04:46:56,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779280703] [2024-11-28 04:46:56,358 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:46:56,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 04:46:56,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:56,360 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 04:46:56,360 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=682, Unknown=0, NotChecked=0, Total=756 [2024-11-28 04:46:56,360 INFO L87 Difference]: Start difference. First operand 334 states and 424 transitions. Second operand has 23 states, 21 states have (on average 6.809523809523809) internal successors, (143), 21 states have internal predecessors, (143), 8 states have call successors, (62), 3 states have call predecessors, (62), 9 states have return successors, (59), 8 states have call predecessors, (59), 8 states have call successors, (59) [2024-11-28 04:47:17,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:47:17,845 INFO L93 Difference]: Finished difference Result 894 states and 1153 transitions. [2024-11-28 04:47:17,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-28 04:47:17,846 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 6.809523809523809) internal successors, (143), 21 states have internal predecessors, (143), 8 states have call successors, (62), 3 states have call predecessors, (62), 9 states have return successors, (59), 8 states have call predecessors, (59), 8 states have call successors, (59) Word has length 246 [2024-11-28 04:47:17,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:47:17,851 INFO L225 Difference]: With dead ends: 894 [2024-11-28 04:47:17,851 INFO L226 Difference]: Without dead ends: 617 [2024-11-28 04:47:17,853 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 395 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=138, Invalid=1422, Unknown=0, NotChecked=0, Total=1560 [2024-11-28 04:47:17,854 INFO L435 NwaCegarLoop]: 571 mSDtfsCounter, 304 mSDsluCounter, 6799 mSDsCounter, 0 mSdLazyCounter, 2440 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 7370 SdHoareTripleChecker+Invalid, 2479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:47:17,854 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 7370 Invalid, 2479 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [39 Valid, 2440 Invalid, 0 Unknown, 0 Unchecked, 18.5s Time] [2024-11-28 04:47:17,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2024-11-28 04:47:17,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 598. [2024-11-28 04:47:17,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 394 states have (on average 1.1852791878172588) internal successors, (467), 400 states have internal predecessors, (467), 138 states have call successors, (138), 52 states have call predecessors, (138), 65 states have return successors, (164), 145 states have call predecessors, (164), 136 states have call successors, (164) [2024-11-28 04:47:17,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 769 transitions. [2024-11-28 04:47:17,935 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 769 transitions. Word has length 246 [2024-11-28 04:47:17,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:47:17,936 INFO L471 AbstractCegarLoop]: Abstraction has 598 states and 769 transitions. [2024-11-28 04:47:17,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 6.809523809523809) internal successors, (143), 21 states have internal predecessors, (143), 8 states have call successors, (62), 3 states have call predecessors, (62), 9 states have return successors, (59), 8 states have call predecessors, (59), 8 states have call successors, (59) [2024-11-28 04:47:17,936 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 769 transitions. [2024-11-28 04:47:17,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-11-28 04:47:17,939 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:47:17,940 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:47:17,972 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 04:47:18,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 04:47:18,141 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:47:18,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:47:18,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1006435278, now seen corresponding path program 1 times [2024-11-28 04:47:18,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:47:18,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726020479] [2024-11-28 04:47:18,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:47:18,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:47:28,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:47:34,952 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 15 proven. 53 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2024-11-28 04:47:34,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:47:34,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726020479] [2024-11-28 04:47:34,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726020479] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:47:34,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496338405] [2024-11-28 04:47:34,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:47:34,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:47:34,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:47:34,955 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:47:34,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:47:43,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:47:43,451 INFO L256 TraceCheckSpWp]: Trace formula consists of 4972 conjuncts, 116 conjuncts are in the unsatisfiable core [2024-11-28 04:47:43,464 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:47:45,871 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 04:47:45,907 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 04:47:45,937 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 04:47:48,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 20 [2024-11-28 04:48:04,945 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 347 proven. 15 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-28 04:48:04,945 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:48:09,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496338405] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:48:09,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:48:09,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 24] total 34 [2024-11-28 04:48:09,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937778510] [2024-11-28 04:48:09,318 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:48:09,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-28 04:48:09,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:48:09,320 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-28 04:48:09,321 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1377, Unknown=0, NotChecked=0, Total=1482 [2024-11-28 04:48:09,321 INFO L87 Difference]: Start difference. First operand 598 states and 769 transitions. Second operand has 34 states, 28 states have (on average 6.928571428571429) internal successors, (194), 29 states have internal predecessors, (194), 13 states have call successors, (68), 4 states have call predecessors, (68), 12 states have return successors, (66), 13 states have call predecessors, (66), 13 states have call successors, (66) [2024-11-28 04:48:51,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:48:51,927 INFO L93 Difference]: Finished difference Result 873 states and 1131 transitions. [2024-11-28 04:48:51,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-28 04:48:51,928 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 28 states have (on average 6.928571428571429) internal successors, (194), 29 states have internal predecessors, (194), 13 states have call successors, (68), 4 states have call predecessors, (68), 12 states have return successors, (66), 13 states have call predecessors, (66), 13 states have call successors, (66) Word has length 258 [2024-11-28 04:48:51,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:48:51,935 INFO L225 Difference]: With dead ends: 873 [2024-11-28 04:48:51,935 INFO L226 Difference]: Without dead ends: 611 [2024-11-28 04:48:51,938 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 262 SyntacticMatches, 22 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 22.5s TimeCoverageRelationStatistics Valid=224, Invalid=3198, Unknown=0, NotChecked=0, Total=3422 [2024-11-28 04:48:51,939 INFO L435 NwaCegarLoop]: 565 mSDtfsCounter, 219 mSDsluCounter, 14081 mSDsCounter, 0 mSdLazyCounter, 4425 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 14646 SdHoareTripleChecker+Invalid, 4467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 4425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:48:51,939 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 14646 Invalid, 4467 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [42 Valid, 4425 Invalid, 0 Unknown, 0 Unchecked, 36.4s Time] [2024-11-28 04:48:51,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2024-11-28 04:48:52,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 605. [2024-11-28 04:48:52,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 399 states have (on average 1.1829573934837092) internal successors, (472), 406 states have internal predecessors, (472), 138 states have call successors, (138), 52 states have call predecessors, (138), 67 states have return successors, (167), 146 states have call predecessors, (167), 136 states have call successors, (167) [2024-11-28 04:48:52,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 777 transitions. [2024-11-28 04:48:52,094 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 777 transitions. Word has length 258 [2024-11-28 04:48:52,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:48:52,094 INFO L471 AbstractCegarLoop]: Abstraction has 605 states and 777 transitions. [2024-11-28 04:48:52,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 28 states have (on average 6.928571428571429) internal successors, (194), 29 states have internal predecessors, (194), 13 states have call successors, (68), 4 states have call predecessors, (68), 12 states have return successors, (66), 13 states have call predecessors, (66), 13 states have call successors, (66) [2024-11-28 04:48:52,095 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 777 transitions. [2024-11-28 04:48:52,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-11-28 04:48:52,099 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:48:52,099 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:48:52,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 04:48:52,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-28 04:48:52,300 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:48:52,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:48:52,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1501056305, now seen corresponding path program 1 times [2024-11-28 04:48:52,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:48:52,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107511154] [2024-11-28 04:48:52,301 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:48:52,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:04,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:06,443 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 26 proven. 15 refuted. 0 times theorem prover too weak. 466 trivial. 0 not checked. [2024-11-28 04:49:06,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:49:06,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107511154] [2024-11-28 04:49:06,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107511154] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:49:06,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513127977] [2024-11-28 04:49:06,444 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:06,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:49:06,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:49:06,447 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:49:06,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:49:16,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:16,678 INFO L256 TraceCheckSpWp]: Trace formula consists of 4970 conjuncts, 116 conjuncts are in the unsatisfiable core [2024-11-28 04:49:16,688 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:49:18,661 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 04:49:18,680 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 04:49:18,699 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 04:49:21,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 18 [2024-11-28 04:49:34,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2024-11-28 04:49:38,536 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 219 proven. 62 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-11-28 04:49:38,536 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:49:46,247 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 85 treesize of output 81 [2024-11-28 04:49:46,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:49:46,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:49:46,376 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 66 treesize of output 62 [2024-11-28 04:49:46,398 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 36 treesize of output 30 [2024-11-28 04:49:48,240 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 27 proven. 22 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2024-11-28 04:49:48,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513127977] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:49:48,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:49:48,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 24, 17] total 40 [2024-11-28 04:49:48,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327076297] [2024-11-28 04:49:48,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:49:48,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-28 04:49:48,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:48,242 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-28 04:49:48,243 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1435, Unknown=0, NotChecked=0, Total=1560 [2024-11-28 04:49:48,244 INFO L87 Difference]: Start difference. First operand 605 states and 777 transitions. Second operand has 40 states, 33 states have (on average 6.0) internal successors, (198), 34 states have internal predecessors, (198), 18 states have call successors, (84), 8 states have call predecessors, (84), 11 states have return successors, (78), 14 states have call predecessors, (78), 16 states have call successors, (78) [2024-11-28 04:50:22,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:22,130 INFO L93 Difference]: Finished difference Result 1020 states and 1337 transitions. [2024-11-28 04:50:22,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-28 04:50:22,132 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 33 states have (on average 6.0) internal successors, (198), 34 states have internal predecessors, (198), 18 states have call successors, (84), 8 states have call predecessors, (84), 11 states have return successors, (78), 14 states have call predecessors, (78), 16 states have call successors, (78) Word has length 256 [2024-11-28 04:50:22,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:22,136 INFO L225 Difference]: With dead ends: 1020 [2024-11-28 04:50:22,136 INFO L226 Difference]: Without dead ends: 609 [2024-11-28 04:50:22,140 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 453 SyntacticMatches, 27 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 21.4s TimeCoverageRelationStatistics Valid=251, Invalid=2829, Unknown=0, NotChecked=0, Total=3080 [2024-11-28 04:50:22,141 INFO L435 NwaCegarLoop]: 317 mSDtfsCounter, 275 mSDsluCounter, 7735 mSDsCounter, 0 mSdLazyCounter, 4115 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 8052 SdHoareTripleChecker+Invalid, 4182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 4115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:22,141 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 8052 Invalid, 4182 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 4115 Invalid, 0 Unknown, 0 Unchecked, 28.8s Time] [2024-11-28 04:50:22,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2024-11-28 04:50:22,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 595. [2024-11-28 04:50:22,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 391 states have (on average 1.1764705882352942) internal successors, (460), 398 states have internal predecessors, (460), 138 states have call successors, (138), 52 states have call predecessors, (138), 65 states have return successors, (163), 144 states have call predecessors, (163), 136 states have call successors, (163) [2024-11-28 04:50:22,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 761 transitions. [2024-11-28 04:50:22,341 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 761 transitions. Word has length 256 [2024-11-28 04:50:22,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:22,342 INFO L471 AbstractCegarLoop]: Abstraction has 595 states and 761 transitions. [2024-11-28 04:50:22,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 33 states have (on average 6.0) internal successors, (198), 34 states have internal predecessors, (198), 18 states have call successors, (84), 8 states have call predecessors, (84), 11 states have return successors, (78), 14 states have call predecessors, (78), 16 states have call successors, (78) [2024-11-28 04:50:22,343 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 761 transitions. [2024-11-28 04:50:22,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-11-28 04:50:22,346 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:22,346 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:50:22,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 04:50:22,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-28 04:50:22,547 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:50:22,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:22,552 INFO L85 PathProgramCache]: Analyzing trace with hash -102193449, now seen corresponding path program 1 times [2024-11-28 04:50:22,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:50:22,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708364041] [2024-11-28 04:50:22,552 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:22,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:50:31,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:39,473 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 18 proven. 65 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2024-11-28 04:50:39,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:50:39,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708364041] [2024-11-28 04:50:39,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708364041] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:50:39,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855484389] [2024-11-28 04:50:39,473 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:39,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:39,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:39,475 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:50:39,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 04:50:48,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:48,991 INFO L256 TraceCheckSpWp]: Trace formula consists of 5065 conjuncts, 141 conjuncts are in the unsatisfiable core [2024-11-28 04:50:49,005 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:50:51,731 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 04:50:51,781 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 04:50:51,797 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 04:50:59,312 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 305 proven. 15 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2024-11-28 04:50:59,312 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:51:08,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855484389] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:51:08,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:51:08,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 25] total 34 [2024-11-28 04:51:08,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987112103] [2024-11-28 04:51:08,494 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:51:08,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-28 04:51:08,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:51:08,496 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-28 04:51:08,497 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1850, Unknown=0, NotChecked=0, Total=1980 [2024-11-28 04:51:08,497 INFO L87 Difference]: Start difference. First operand 595 states and 761 transitions. Second operand has 34 states, 29 states have (on average 5.620689655172414) internal successors, (163), 28 states have internal predecessors, (163), 11 states have call successors, (66), 3 states have call predecessors, (66), 12 states have return successors, (64), 11 states have call predecessors, (64), 11 states have call successors, (64) [2024-11-28 04:51:23,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:51:23,794 INFO L93 Difference]: Finished difference Result 652 states and 816 transitions. [2024-11-28 04:51:23,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-28 04:51:23,795 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 29 states have (on average 5.620689655172414) internal successors, (163), 28 states have internal predecessors, (163), 11 states have call successors, (66), 3 states have call predecessors, (66), 12 states have return successors, (64), 11 states have call predecessors, (64), 11 states have call successors, (64) Word has length 264 [2024-11-28 04:51:23,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:51:23,799 INFO L225 Difference]: With dead ends: 652 [2024-11-28 04:51:23,799 INFO L226 Difference]: Without dead ends: 331 [2024-11-28 04:51:23,802 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 412 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=210, Invalid=2982, Unknown=0, NotChecked=0, Total=3192 [2024-11-28 04:51:23,803 INFO L435 NwaCegarLoop]: 304 mSDtfsCounter, 21 mSDsluCounter, 7263 mSDsCounter, 0 mSdLazyCounter, 1601 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 7567 SdHoareTripleChecker+Invalid, 1606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:51:23,803 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 7567 Invalid, 1606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1601 Invalid, 0 Unknown, 0 Unchecked, 11.4s Time] [2024-11-28 04:51:23,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2024-11-28 04:51:23,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2024-11-28 04:51:23,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 218 states have (on average 1.1605504587155964) internal successors, (253), 222 states have internal predecessors, (253), 74 states have call successors, (74), 31 states have call predecessors, (74), 38 states have return successors, (89), 77 states have call predecessors, (89), 73 states have call successors, (89) [2024-11-28 04:51:23,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 416 transitions. [2024-11-28 04:51:23,859 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 416 transitions. Word has length 264 [2024-11-28 04:51:23,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:51:23,860 INFO L471 AbstractCegarLoop]: Abstraction has 331 states and 416 transitions. [2024-11-28 04:51:23,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 29 states have (on average 5.620689655172414) internal successors, (163), 28 states have internal predecessors, (163), 11 states have call successors, (66), 3 states have call predecessors, (66), 12 states have return successors, (64), 11 states have call predecessors, (64), 11 states have call successors, (64) [2024-11-28 04:51:23,860 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 416 transitions. [2024-11-28 04:51:23,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-28 04:51:23,862 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:23,862 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:51:23,899 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 04:51:24,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:24,063 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:51:24,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:24,063 INFO L85 PathProgramCache]: Analyzing trace with hash 296149878, now seen corresponding path program 1 times [2024-11-28 04:51:24,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:51:24,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961206888] [2024-11-28 04:51:24,064 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:51:24,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:51:34,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:51:40,498 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 40 proven. 28 refuted. 0 times theorem prover too weak. 463 trivial. 0 not checked. [2024-11-28 04:51:40,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:51:40,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961206888] [2024-11-28 04:51:40,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961206888] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:51:40,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987372695] [2024-11-28 04:51:40,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:51:40,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:40,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:51:40,500 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:51:40,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 04:51:49,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:51:49,236 INFO L256 TraceCheckSpWp]: Trace formula consists of 5069 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-28 04:51:49,243 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:51:52,052 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 291 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2024-11-28 04:51:52,053 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:51:52,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987372695] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:51:52,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:51:52,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [12] total 23 [2024-11-28 04:51:52,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168399300] [2024-11-28 04:51:52,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:51:52,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 04:51:52,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:51:52,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 04:51:52,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=456, Unknown=0, NotChecked=0, Total=506 [2024-11-28 04:51:52,055 INFO L87 Difference]: Start difference. First operand 331 states and 416 transitions. Second operand has 14 states, 11 states have (on average 10.090909090909092) internal successors, (111), 11 states have internal predecessors, (111), 5 states have call successors, (36), 2 states have call predecessors, (36), 6 states have return successors, (34), 5 states have call predecessors, (34), 5 states have call successors, (34) [2024-11-28 04:51:56,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:51:56,434 INFO L93 Difference]: Finished difference Result 531 states and 682 transitions. [2024-11-28 04:51:56,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 04:51:56,435 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 10.090909090909092) internal successors, (111), 11 states have internal predecessors, (111), 5 states have call successors, (36), 2 states have call predecessors, (36), 6 states have return successors, (34), 5 states have call predecessors, (34), 5 states have call successors, (34) Word has length 270 [2024-11-28 04:51:56,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:51:56,440 INFO L225 Difference]: With dead ends: 531 [2024-11-28 04:51:56,441 INFO L226 Difference]: Without dead ends: 333 [2024-11-28 04:51:56,442 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2024-11-28 04:51:56,443 INFO L435 NwaCegarLoop]: 313 mSDtfsCounter, 15 mSDsluCounter, 3235 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 3548 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:51:56,443 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 3548 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-28 04:51:56,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2024-11-28 04:51:56,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 325. [2024-11-28 04:51:56,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 214 states have (on average 1.1635514018691588) internal successors, (249), 217 states have internal predecessors, (249), 74 states have call successors, (74), 31 states have call predecessors, (74), 36 states have return successors, (83), 76 states have call predecessors, (83), 73 states have call successors, (83) [2024-11-28 04:51:56,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 406 transitions. [2024-11-28 04:51:56,495 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 406 transitions. Word has length 270 [2024-11-28 04:51:56,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:51:56,495 INFO L471 AbstractCegarLoop]: Abstraction has 325 states and 406 transitions. [2024-11-28 04:51:56,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 10.090909090909092) internal successors, (111), 11 states have internal predecessors, (111), 5 states have call successors, (36), 2 states have call predecessors, (36), 6 states have return successors, (34), 5 states have call predecessors, (34), 5 states have call successors, (34) [2024-11-28 04:51:56,496 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 406 transitions. [2024-11-28 04:51:56,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2024-11-28 04:51:56,497 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:56,498 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:51:56,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-28 04:51:56,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:56,698 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:51:56,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:56,699 INFO L85 PathProgramCache]: Analyzing trace with hash -656165394, now seen corresponding path program 1 times [2024-11-28 04:51:56,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:51:56,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941383590] [2024-11-28 04:51:56,699 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:51:56,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:06,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:15,910 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2024-11-28 04:52:15,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:15,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941383590] [2024-11-28 04:52:15,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941383590] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:52:15,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:52:15,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-28 04:52:15,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909000618] [2024-11-28 04:52:15,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:52:15,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 04:52:15,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:15,912 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 04:52:15,913 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:52:15,913 INFO L87 Difference]: Start difference. First operand 325 states and 406 transitions. Second operand has 15 states, 13 states have (on average 6.769230769230769) internal successors, (88), 13 states have internal predecessors, (88), 8 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (33), 9 states have call predecessors, (33), 8 states have call successors, (33) [2024-11-28 04:52:18,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:18,441 INFO L93 Difference]: Finished difference Result 541 states and 689 transitions. [2024-11-28 04:52:18,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 04:52:18,442 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 6.769230769230769) internal successors, (88), 13 states have internal predecessors, (88), 8 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (33), 9 states have call predecessors, (33), 8 states have call successors, (33) Word has length 274 [2024-11-28 04:52:18,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:18,445 INFO L225 Difference]: With dead ends: 541 [2024-11-28 04:52:18,445 INFO L226 Difference]: Without dead ends: 346 [2024-11-28 04:52:18,446 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2024-11-28 04:52:18,447 INFO L435 NwaCegarLoop]: 321 mSDtfsCounter, 37 mSDsluCounter, 3999 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 4320 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:18,447 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 4320 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-28 04:52:18,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2024-11-28 04:52:18,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 336. [2024-11-28 04:52:18,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 222 states have (on average 1.1576576576576576) internal successors, (257), 225 states have internal predecessors, (257), 75 states have call successors, (75), 31 states have call predecessors, (75), 38 states have return successors, (86), 79 states have call predecessors, (86), 74 states have call successors, (86) [2024-11-28 04:52:18,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 418 transitions. [2024-11-28 04:52:18,499 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 418 transitions. Word has length 274 [2024-11-28 04:52:18,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:18,500 INFO L471 AbstractCegarLoop]: Abstraction has 336 states and 418 transitions. [2024-11-28 04:52:18,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 6.769230769230769) internal successors, (88), 13 states have internal predecessors, (88), 8 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (33), 9 states have call predecessors, (33), 8 states have call successors, (33) [2024-11-28 04:52:18,500 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 418 transitions. [2024-11-28 04:52:18,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2024-11-28 04:52:18,502 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:18,502 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:52:18,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 04:52:18,503 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:52:18,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:18,503 INFO L85 PathProgramCache]: Analyzing trace with hash -908480432, now seen corresponding path program 1 times [2024-11-28 04:52:18,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:18,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979356880] [2024-11-28 04:52:18,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:18,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:24,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:25,947 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2024-11-28 04:52:25,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:25,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979356880] [2024-11-28 04:52:25,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979356880] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:52:25,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:52:25,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:52:25,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010059324] [2024-11-28 04:52:25,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:52:25,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:52:25,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:25,949 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:52:25,949 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:52:25,950 INFO L87 Difference]: Start difference. First operand 336 states and 418 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 6 states have internal predecessors, (86), 2 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (32), 4 states have call predecessors, (32), 2 states have call successors, (32) [2024-11-28 04:52:26,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:26,140 INFO L93 Difference]: Finished difference Result 617 states and 775 transitions. [2024-11-28 04:52:26,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:52:26,140 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 6 states have internal predecessors, (86), 2 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (32), 4 states have call predecessors, (32), 2 states have call successors, (32) Word has length 280 [2024-11-28 04:52:26,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:26,143 INFO L225 Difference]: With dead ends: 617 [2024-11-28 04:52:26,144 INFO L226 Difference]: Without dead ends: 321 [2024-11-28 04:52:26,145 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:52:26,145 INFO L435 NwaCegarLoop]: 334 mSDtfsCounter, 0 mSDsluCounter, 1657 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1991 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:26,146 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1991 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:52:26,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2024-11-28 04:52:26,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2024-11-28 04:52:26,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 212 states have (on average 1.150943396226415) internal successors, (244), 215 states have internal predecessors, (244), 72 states have call successors, (72), 31 states have call predecessors, (72), 36 states have return successors, (81), 74 states have call predecessors, (81), 71 states have call successors, (81) [2024-11-28 04:52:26,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 397 transitions. [2024-11-28 04:52:26,195 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 397 transitions. Word has length 280 [2024-11-28 04:52:26,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:26,196 INFO L471 AbstractCegarLoop]: Abstraction has 321 states and 397 transitions. [2024-11-28 04:52:26,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 6 states have internal predecessors, (86), 2 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (32), 4 states have call predecessors, (32), 2 states have call successors, (32) [2024-11-28 04:52:26,196 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 397 transitions. [2024-11-28 04:52:26,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2024-11-28 04:52:26,198 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:26,198 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:52:26,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 04:52:26,198 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:52:26,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:26,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1744947901, now seen corresponding path program 1 times [2024-11-28 04:52:26,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:26,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995255308] [2024-11-28 04:52:26,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:26,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:37,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:43,609 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2024-11-28 04:52:43,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:43,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995255308] [2024-11-28 04:52:43,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995255308] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:52:43,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:52:43,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 04:52:43,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281388237] [2024-11-28 04:52:43,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:52:43,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:52:43,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:43,611 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:52:43,611 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:52:43,611 INFO L87 Difference]: Start difference. First operand 321 states and 397 transitions. Second operand has 11 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 4 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (32), 4 states have call predecessors, (32), 3 states have call successors, (32) [2024-11-28 04:52:45,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:45,902 INFO L93 Difference]: Finished difference Result 502 states and 636 transitions. [2024-11-28 04:52:45,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 04:52:45,903 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 4 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (32), 4 states have call predecessors, (32), 3 states have call successors, (32) Word has length 279 [2024-11-28 04:52:45,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:45,905 INFO L225 Difference]: With dead ends: 502 [2024-11-28 04:52:45,905 INFO L226 Difference]: Without dead ends: 323 [2024-11-28 04:52:45,906 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:52:45,906 INFO L435 NwaCegarLoop]: 307 mSDtfsCounter, 5 mSDsluCounter, 2359 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2666 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:45,906 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2666 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-28 04:52:45,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2024-11-28 04:52:45,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 321. [2024-11-28 04:52:45,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 212 states have (on average 1.150943396226415) internal successors, (244), 215 states have internal predecessors, (244), 72 states have call successors, (72), 31 states have call predecessors, (72), 36 states have return successors, (80), 74 states have call predecessors, (80), 71 states have call successors, (80) [2024-11-28 04:52:45,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 396 transitions. [2024-11-28 04:52:45,954 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 396 transitions. Word has length 279 [2024-11-28 04:52:45,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:45,954 INFO L471 AbstractCegarLoop]: Abstraction has 321 states and 396 transitions. [2024-11-28 04:52:45,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 4 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (32), 4 states have call predecessors, (32), 3 states have call successors, (32) [2024-11-28 04:52:45,955 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 396 transitions. [2024-11-28 04:52:45,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2024-11-28 04:52:45,956 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:45,957 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:52:45,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 04:52:45,957 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:52:45,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:45,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1767984448, now seen corresponding path program 1 times [2024-11-28 04:52:45,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:45,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130902954] [2024-11-28 04:52:45,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:45,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:53:05,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:53:05,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1829380395] [2024-11-28 04:53:05,785 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:53:05,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:53:05,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:53:05,789 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:53:05,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d498cb6-6512-47e4-b9ee-dd9334fe5210/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process