./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 839f41a2c3e360479cb51d794d3ab0f4c035e5d91806fe8b36886ee505a3f070 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 11:19:15,032 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 11:19:15,088 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-12-02 11:19:15,092 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 11:19:15,092 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 11:19:15,115 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 11:19:15,115 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 11:19:15,115 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 11:19:15,116 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 11:19:15,116 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 11:19:15,116 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 11:19:15,116 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 11:19:15,116 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 11:19:15,116 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 11:19:15,117 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 11:19:15,117 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 11:19:15,117 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 11:19:15,117 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 11:19:15,117 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 11:19:15,117 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 11:19:15,117 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 11:19:15,117 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 11:19:15,117 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 11:19:15,117 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 11:19:15,118 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 11:19:15,118 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 11:19:15,118 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:19:15,118 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:19:15,118 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:19:15,118 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:19:15,118 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 11:19:15,118 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:19:15,118 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:19:15,118 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:19:15,118 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:19:15,119 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 11:19:15,119 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 11:19:15,119 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 11:19:15,119 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 11:19:15,119 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 11:19:15,119 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 11:19:15,119 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 11:19:15,119 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 11:19:15,119 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 11:19:15,119 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 11:19:15,119 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_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 839f41a2c3e360479cb51d794d3ab0f4c035e5d91806fe8b36886ee505a3f070 [2024-12-02 11:19:15,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 11:19:15,355 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 11:19:15,357 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 11:19:15,358 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 11:19:15,358 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 11:19:15,359 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i [2024-12-02 11:19:17,936 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/data/6c731595b/a9c3949f38fa40e3b556be218e54c81e/FLAGd7bbf8326 [2024-12-02 11:19:18,340 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 11:19:18,340 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i [2024-12-02 11:19:18,366 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/data/6c731595b/a9c3949f38fa40e3b556be218e54c81e/FLAGd7bbf8326 [2024-12-02 11:19:18,495 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/data/6c731595b/a9c3949f38fa40e3b556be218e54c81e [2024-12-02 11:19:18,497 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 11:19:18,499 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 11:19:18,500 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 11:19:18,500 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 11:19:18,504 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 11:19:18,505 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:19:18" (1/1) ... [2024-12-02 11:19:18,506 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a931764 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:19:18, skipping insertion in model container [2024-12-02 11:19:18,506 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:19:18" (1/1) ... [2024-12-02 11:19:18,587 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 11:19:18,796 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_8282b486-0baa-4cc5-85fa-f753288caf23/sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i[4492,4505] [2024-12-02 11:19:18,801 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_8282b486-0baa-4cc5-85fa-f753288caf23/sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i[4552,4565] [2024-12-02 11:19:19,613 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:19,614 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:19,614 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:19,615 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:19,616 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:19,630 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:19,630 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:19,632 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:19,633 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:19,634 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:19,635 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:19,636 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:19,636 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:20,455 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:20,456 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:20,475 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:20,475 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:20,480 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:20,480 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:20,491 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:20,491 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:20,491 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:20,492 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:20,492 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:20,492 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:20,492 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:20,518 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_8282b486-0baa-4cc5-85fa-f753288caf23/sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i[227890,227903] [2024-12-02 11:19:20,518 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:19:20,542 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 11:19:20,552 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_8282b486-0baa-4cc5-85fa-f753288caf23/sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i[4492,4505] [2024-12-02 11:19:20,552 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_8282b486-0baa-4cc5-85fa-f753288caf23/sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i[4552,4565] [2024-12-02 11:19:20,584 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:20,584 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:20,584 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:20,585 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:20,585 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:20,590 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:20,591 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:20,592 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:20,592 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:20,593 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:20,593 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:20,594 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:20,594 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:20,650 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7558-7569] [2024-12-02 11:19:20,725 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:20,726 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:20,731 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:20,731 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:20,733 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:20,733 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:20,740 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:20,740 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:20,741 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:20,741 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:20,741 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:20,741 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:20,742 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:19:20,755 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_8282b486-0baa-4cc5-85fa-f753288caf23/sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i[227890,227903] [2024-12-02 11:19:20,756 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:19:20,896 INFO L204 MainTranslator]: Completed translation [2024-12-02 11:19:20,896 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:19:20 WrapperNode [2024-12-02 11:19:20,896 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 11:19:20,897 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 11:19:20,897 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 11:19:20,897 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 11:19:20,901 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:19:20" (1/1) ... [2024-12-02 11:19:20,970 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:19:20" (1/1) ... [2024-12-02 11:19:21,015 INFO L138 Inliner]: procedures = 763, calls = 2447, calls flagged for inlining = 68, calls inlined = 11, statements flattened = 643 [2024-12-02 11:19:21,015 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 11:19:21,016 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 11:19:21,016 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 11:19:21,016 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 11:19:21,026 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:19:20" (1/1) ... [2024-12-02 11:19:21,027 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:19:20" (1/1) ... [2024-12-02 11:19:21,035 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:19:20" (1/1) ... [2024-12-02 11:19:21,091 INFO L175 MemorySlicer]: Split 329 memory accesses to 9 slices as follows [238, 2, 8, 22, 2, 3, 6, 43, 5]. 72 percent of accesses are in the largest equivalence class. The 22 initializations are split as follows [6, 2, 0, 0, 0, 0, 0, 9, 5]. The 247 writes are split as follows [232, 0, 1, 1, 1, 1, 2, 9, 0]. [2024-12-02 11:19:21,092 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:19:20" (1/1) ... [2024-12-02 11:19:21,092 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:19:20" (1/1) ... [2024-12-02 11:19:21,126 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:19:20" (1/1) ... [2024-12-02 11:19:21,129 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:19:20" (1/1) ... [2024-12-02 11:19:21,133 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:19:20" (1/1) ... [2024-12-02 11:19:21,146 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:19:20" (1/1) ... [2024-12-02 11:19:21,150 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:19:20" (1/1) ... [2024-12-02 11:19:21,162 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 11:19:21,163 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 11:19:21,163 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 11:19:21,163 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 11:19:21,164 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:19:20" (1/1) ... [2024-12-02 11:19:21,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:19:21,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:19:21,188 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 11:19:21,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 11:19:21,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-12-02 11:19:21,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-12-02 11:19:21,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-12-02 11:19:21,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-12-02 11:19:21,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2024-12-02 11:19:21,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2024-12-02 11:19:21,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2024-12-02 11:19:21,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2024-12-02 11:19:21,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2024-12-02 11:19:21,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 11:19:21,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-12-02 11:19:21,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-12-02 11:19:21,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-12-02 11:19:21,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-12-02 11:19:21,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-12-02 11:19:21,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-12-02 11:19:21,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-12-02 11:19:21,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2024-12-02 11:19:21,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2024-12-02 11:19:21,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 11:19:21,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 11:19:21,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 11:19:21,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 11:19:21,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-12-02 11:19:21,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-12-02 11:19:21,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-12-02 11:19:21,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-12-02 11:19:21,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-12-02 11:19:21,211 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-12-02 11:19:21,211 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-12-02 11:19:21,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-12-02 11:19:21,211 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-12-02 11:19:21,211 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2024-12-02 11:19:21,211 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2024-12-02 11:19:21,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 11:19:21,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 11:19:21,211 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_next [2024-12-02 11:19:21,211 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_next [2024-12-02 11:19:21,211 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2024-12-02 11:19:21,211 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2024-12-02 11:19:21,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-12-02 11:19:21,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-12-02 11:19:21,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-12-02 11:19:21,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-12-02 11:19:21,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-12-02 11:19:21,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-12-02 11:19:21,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-12-02 11:19:21,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-12-02 11:19:21,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-12-02 11:19:21,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 11:19:21,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 11:19:21,212 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-12-02 11:19:21,212 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-12-02 11:19:21,212 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2024-12-02 11:19:21,212 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2024-12-02 11:19:21,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-12-02 11:19:21,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-12-02 11:19:21,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-12-02 11:19:21,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-12-02 11:19:21,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-12-02 11:19:21,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-12-02 11:19:21,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-12-02 11:19:21,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2024-12-02 11:19:21,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#8 [2024-12-02 11:19:21,213 INFO L130 BoogieDeclarations]: Found specification of procedure s_get_next_element [2024-12-02 11:19:21,213 INFO L138 BoogieDeclarations]: Found implementation of procedure s_get_next_element [2024-12-02 11:19:21,213 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 11:19:21,213 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 11:19:21,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 11:19:21,213 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_is_valid [2024-12-02 11:19:21,213 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_is_valid [2024-12-02 11:19:21,213 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2024-12-02 11:19:21,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2024-12-02 11:19:21,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-12-02 11:19:21,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-12-02 11:19:21,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-12-02 11:19:21,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-12-02 11:19:21,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-12-02 11:19:21,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-12-02 11:19:21,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-12-02 11:19:21,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-12-02 11:19:21,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-12-02 11:19:21,214 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2024-12-02 11:19:21,214 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2024-12-02 11:19:21,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-12-02 11:19:21,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-12-02 11:19:21,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-12-02 11:19:21,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-12-02 11:19:21,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-12-02 11:19:21,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-12-02 11:19:21,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-12-02 11:19:21,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-12-02 11:19:21,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2024-12-02 11:19:21,215 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2024-12-02 11:19:21,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2024-12-02 11:19:21,215 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2024-12-02 11:19:21,215 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2024-12-02 11:19:21,215 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-12-02 11:19:21,215 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-12-02 11:19:21,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 11:19:21,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 11:19:21,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 11:19:21,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 11:19:21,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-12-02 11:19:21,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-12-02 11:19:21,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-12-02 11:19:21,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-12-02 11:19:21,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-12-02 11:19:21,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 11:19:21,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 11:19:21,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 11:19:21,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 11:19:21,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 11:19:21,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 11:19:21,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-12-02 11:19:21,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-12-02 11:19:21,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-12-02 11:19:21,216 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2024-12-02 11:19:21,216 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2024-12-02 11:19:21,529 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 11:19:21,532 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 11:19:27,484 INFO L? ?]: Removed 161 outVars from TransFormulas that were not future-live. [2024-12-02 11:19:27,484 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 11:19:27,496 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 11:19:27,496 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-12-02 11:19:27,496 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:19:27 BoogieIcfgContainer [2024-12-02 11:19:27,497 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 11:19:27,499 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 11:19:27,499 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 11:19:27,504 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 11:19:27,504 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 11:19:18" (1/3) ... [2024-12-02 11:19:27,504 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59ed58e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:19:27, skipping insertion in model container [2024-12-02 11:19:27,504 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:19:20" (2/3) ... [2024-12-02 11:19:27,505 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59ed58e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:19:27, skipping insertion in model container [2024-12-02 11:19:27,505 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:19:27" (3/3) ... [2024-12-02 11:19:27,506 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_hash_iter_next_harness.i [2024-12-02 11:19:27,521 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 11:19:27,522 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_hash_iter_next_harness.i that has 17 procedures, 173 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 11:19:27,603 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 11:19:27,614 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;@395f1140, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 11:19:27,614 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 11:19:27,618 INFO L276 IsEmpty]: Start isEmpty. Operand has 173 states, 112 states have (on average 1.2589285714285714) internal successors, (141), 113 states have internal predecessors, (141), 43 states have call successors, (43), 16 states have call predecessors, (43), 16 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-12-02 11:19:27,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-12-02 11:19:27,632 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:19:27,632 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:19:27,633 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:19:27,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:19:27,638 INFO L85 PathProgramCache]: Analyzing trace with hash -150243314, now seen corresponding path program 1 times [2024-12-02 11:19:27,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:19:27,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083717748] [2024-12-02 11:19:27,646 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:19:27,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:19:32,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:19:33,294 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-12-02 11:19:33,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:19:33,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083717748] [2024-12-02 11:19:33,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083717748] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:19:33,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319790628] [2024-12-02 11:19:33,296 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:19:33,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:19:33,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:19:33,298 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:19:33,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 11:19:39,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:19:39,091 INFO L256 TraceCheckSpWp]: Trace formula consists of 4566 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 11:19:39,102 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:19:39,123 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-12-02 11:19:39,123 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:19:39,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319790628] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:19:39,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:19:39,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 11:19:39,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128788959] [2024-12-02 11:19:39,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:19:39,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 11:19:39,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:19:39,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 11:19:39,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 11:19:39,150 INFO L87 Difference]: Start difference. First operand has 173 states, 112 states have (on average 1.2589285714285714) internal successors, (141), 113 states have internal predecessors, (141), 43 states have call successors, (43), 16 states have call predecessors, (43), 16 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2024-12-02 11:19:39,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:19:39,188 INFO L93 Difference]: Finished difference Result 338 states and 479 transitions. [2024-12-02 11:19:39,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 11:19:39,190 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 156 [2024-12-02 11:19:39,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:19:39,198 INFO L225 Difference]: With dead ends: 338 [2024-12-02 11:19:39,198 INFO L226 Difference]: Without dead ends: 167 [2024-12-02 11:19:39,202 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 11:19:39,205 INFO L435 NwaCegarLoop]: 223 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:19:39,206 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:19:39,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-12-02 11:19:39,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2024-12-02 11:19:39,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 107 states have (on average 1.233644859813084) internal successors, (132), 108 states have internal predecessors, (132), 43 states have call successors, (43), 16 states have call predecessors, (43), 16 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-12-02 11:19:39,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 217 transitions. [2024-12-02 11:19:39,249 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 217 transitions. Word has length 156 [2024-12-02 11:19:39,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:19:39,249 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 217 transitions. [2024-12-02 11:19:39,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2024-12-02 11:19:39,250 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 217 transitions. [2024-12-02 11:19:39,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-12-02 11:19:39,253 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:19:39,253 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:19:39,269 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 11:19:39,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 11:19:39,454 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:19:39,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:19:39,455 INFO L85 PathProgramCache]: Analyzing trace with hash -213742062, now seen corresponding path program 1 times [2024-12-02 11:19:39,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:19:39,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407995508] [2024-12-02 11:19:39,455 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:19:39,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:19:44,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:19:45,201 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2024-12-02 11:19:45,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:19:45,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407995508] [2024-12-02 11:19:45,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407995508] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:19:45,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676972504] [2024-12-02 11:19:45,202 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:19:45,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:19:45,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:19:45,204 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:19:45,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 11:19:50,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:19:50,362 INFO L256 TraceCheckSpWp]: Trace formula consists of 4566 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 11:19:50,370 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:19:51,723 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-12-02 11:19:51,724 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:19:51,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676972504] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:19:51,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:19:51,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-12-02 11:19:51,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554325795] [2024-12-02 11:19:51,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:19:51,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:19:51,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:19:51,726 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:19:51,727 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 11:19:51,727 INFO L87 Difference]: Start difference. First operand 167 states and 217 transitions. Second operand has 6 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (24), 2 states have call predecessors, (24), 3 states have call successors, (24) [2024-12-02 11:19:52,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:19:52,977 INFO L93 Difference]: Finished difference Result 313 states and 412 transitions. [2024-12-02 11:19:52,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 11:19:52,978 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (24), 2 states have call predecessors, (24), 3 states have call successors, (24) Word has length 156 [2024-12-02 11:19:52,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:19:52,982 INFO L225 Difference]: With dead ends: 313 [2024-12-02 11:19:52,982 INFO L226 Difference]: Without dead ends: 173 [2024-12-02 11:19:52,983 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-12-02 11:19:52,984 INFO L435 NwaCegarLoop]: 184 mSDtfsCounter, 181 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:19:52,984 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 699 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 11:19:52,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-12-02 11:19:53,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 169. [2024-12-02 11:19:53,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 108 states have (on average 1.2314814814814814) internal successors, (133), 110 states have internal predecessors, (133), 43 states have call successors, (43), 16 states have call predecessors, (43), 17 states have return successors, (45), 42 states have call predecessors, (45), 42 states have call successors, (45) [2024-12-02 11:19:53,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 221 transitions. [2024-12-02 11:19:53,003 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 221 transitions. Word has length 156 [2024-12-02 11:19:53,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:19:53,003 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 221 transitions. [2024-12-02 11:19:53,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (24), 2 states have call predecessors, (24), 3 states have call successors, (24) [2024-12-02 11:19:53,004 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 221 transitions. [2024-12-02 11:19:53,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-12-02 11:19:53,005 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:19:53,005 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:19:53,020 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 11:19:53,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:19:53,206 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:19:53,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:19:53,206 INFO L85 PathProgramCache]: Analyzing trace with hash -358435602, now seen corresponding path program 1 times [2024-12-02 11:19:53,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:19:53,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884472099] [2024-12-02 11:19:53,207 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:19:53,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:19:57,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:19:58,631 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2024-12-02 11:19:58,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:19:58,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884472099] [2024-12-02 11:19:58,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884472099] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:19:58,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146794453] [2024-12-02 11:19:58,631 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:19:58,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:19:58,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:19:58,634 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:19:58,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 11:20:03,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:20:03,778 INFO L256 TraceCheckSpWp]: Trace formula consists of 4571 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 11:20:03,782 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:20:05,457 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 102 proven. 55 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-12-02 11:20:05,458 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:20:07,726 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2024-12-02 11:20:07,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146794453] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:20:07,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:20:07,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 16 [2024-12-02 11:20:07,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977818542] [2024-12-02 11:20:07,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:20:07,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 11:20:07,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:20:07,729 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 11:20:07,729 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2024-12-02 11:20:07,729 INFO L87 Difference]: Start difference. First operand 169 states and 221 transitions. Second operand has 16 states, 14 states have (on average 10.071428571428571) internal successors, (141), 14 states have internal predecessors, (141), 8 states have call successors, (63), 5 states have call predecessors, (63), 5 states have return successors, (59), 7 states have call predecessors, (59), 8 states have call successors, (59) [2024-12-02 11:20:11,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:20:11,931 INFO L93 Difference]: Finished difference Result 335 states and 443 transitions. [2024-12-02 11:20:11,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 11:20:11,932 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 10.071428571428571) internal successors, (141), 14 states have internal predecessors, (141), 8 states have call successors, (63), 5 states have call predecessors, (63), 5 states have return successors, (59), 7 states have call predecessors, (59), 8 states have call successors, (59) Word has length 157 [2024-12-02 11:20:11,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:20:11,934 INFO L225 Difference]: With dead ends: 335 [2024-12-02 11:20:11,934 INFO L226 Difference]: Without dead ends: 178 [2024-12-02 11:20:11,935 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 303 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2024-12-02 11:20:11,935 INFO L435 NwaCegarLoop]: 173 mSDtfsCounter, 310 mSDsluCounter, 1664 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 1837 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-12-02 11:20:11,935 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 1837 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-12-02 11:20:11,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-12-02 11:20:11,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 174. [2024-12-02 11:20:11,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 112 states have (on average 1.2232142857142858) internal successors, (137), 114 states have internal predecessors, (137), 43 states have call successors, (43), 16 states have call predecessors, (43), 18 states have return successors, (44), 43 states have call predecessors, (44), 42 states have call successors, (44) [2024-12-02 11:20:11,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 224 transitions. [2024-12-02 11:20:11,946 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 224 transitions. Word has length 157 [2024-12-02 11:20:11,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:20:11,946 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 224 transitions. [2024-12-02 11:20:11,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 10.071428571428571) internal successors, (141), 14 states have internal predecessors, (141), 8 states have call successors, (63), 5 states have call predecessors, (63), 5 states have return successors, (59), 7 states have call predecessors, (59), 8 states have call successors, (59) [2024-12-02 11:20:11,946 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 224 transitions. [2024-12-02 11:20:11,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-12-02 11:20:11,948 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:20:11,948 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:20:11,967 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 11:20:12,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-12-02 11:20:12,149 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:20:12,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:20:12,149 INFO L85 PathProgramCache]: Analyzing trace with hash -47352484, now seen corresponding path program 1 times [2024-12-02 11:20:12,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:20:12,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208393423] [2024-12-02 11:20:12,149 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:20:12,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:20:16,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:20:19,514 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2024-12-02 11:20:19,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:20:19,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208393423] [2024-12-02 11:20:19,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208393423] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:20:19,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327205687] [2024-12-02 11:20:19,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:20:19,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:20:19,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:20:19,516 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:20:19,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 11:20:24,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:20:24,923 INFO L256 TraceCheckSpWp]: Trace formula consists of 4584 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 11:20:24,930 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:20:27,522 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 6 proven. 128 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-12-02 11:20:27,522 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:20:30,916 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2024-12-02 11:20:30,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327205687] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 11:20:30,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-12-02 11:20:30,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10, 10] total 25 [2024-12-02 11:20:30,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40445590] [2024-12-02 11:20:30,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:20:30,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 11:20:30,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:20:30,919 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 11:20:30,919 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=542, Unknown=0, NotChecked=0, Total=600 [2024-12-02 11:20:30,919 INFO L87 Difference]: Start difference. First operand 174 states and 224 transitions. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 8 states have internal predecessors, (64), 6 states have call successors, (26), 4 states have call predecessors, (26), 2 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) [2024-12-02 11:20:34,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:20:34,372 INFO L93 Difference]: Finished difference Result 254 states and 332 transitions. [2024-12-02 11:20:34,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 11:20:34,372 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 8 states have internal predecessors, (64), 6 states have call successors, (26), 4 states have call predecessors, (26), 2 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) Word has length 170 [2024-12-02 11:20:34,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:20:34,376 INFO L225 Difference]: With dead ends: 254 [2024-12-02 11:20:34,376 INFO L226 Difference]: Without dead ends: 178 [2024-12-02 11:20:34,376 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 326 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=92, Invalid=900, Unknown=0, NotChecked=0, Total=992 [2024-12-02 11:20:34,377 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 235 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-12-02 11:20:34,378 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 1129 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-12-02 11:20:34,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-12-02 11:20:34,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 172. [2024-12-02 11:20:34,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 111 states have (on average 1.2162162162162162) internal successors, (135), 112 states have internal predecessors, (135), 43 states have call successors, (43), 16 states have call predecessors, (43), 17 states have return successors, (43), 43 states have call predecessors, (43), 42 states have call successors, (43) [2024-12-02 11:20:34,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 221 transitions. [2024-12-02 11:20:34,398 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 221 transitions. Word has length 170 [2024-12-02 11:20:34,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:20:34,398 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 221 transitions. [2024-12-02 11:20:34,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 8 states have internal predecessors, (64), 6 states have call successors, (26), 4 states have call predecessors, (26), 2 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) [2024-12-02 11:20:34,399 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 221 transitions. [2024-12-02 11:20:34,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-12-02 11:20:34,401 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:20:34,401 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:20:34,419 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 11:20:34,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:20:34,601 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:20:34,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:20:34,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1654169612, now seen corresponding path program 1 times [2024-12-02 11:20:34,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:20:34,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142738645] [2024-12-02 11:20:34,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:20:34,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:20:38,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:20:41,447 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2024-12-02 11:20:41,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:20:41,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142738645] [2024-12-02 11:20:41,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142738645] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:20:41,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906680500] [2024-12-02 11:20:41,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:20:41,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:20:41,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:20:41,449 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:20:41,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 11:20:47,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:20:47,249 INFO L256 TraceCheckSpWp]: Trace formula consists of 4578 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-12-02 11:20:47,253 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:20:50,294 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 9 proven. 131 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-12-02 11:20:50,294 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:20:52,190 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2024-12-02 11:20:52,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906680500] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 11:20:52,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-12-02 11:20:52,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10, 12] total 22 [2024-12-02 11:20:52,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287850222] [2024-12-02 11:20:52,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:20:52,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 11:20:52,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:20:52,192 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 11:20:52,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=416, Unknown=0, NotChecked=0, Total=462 [2024-12-02 11:20:52,193 INFO L87 Difference]: Start difference. First operand 172 states and 221 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-12-02 11:20:52,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:20:52,507 INFO L93 Difference]: Finished difference Result 180 states and 229 transitions. [2024-12-02 11:20:52,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 11:20:52,507 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 170 [2024-12-02 11:20:52,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:20:52,510 INFO L225 Difference]: With dead ends: 180 [2024-12-02 11:20:52,510 INFO L226 Difference]: Without dead ends: 178 [2024-12-02 11:20:52,510 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=50, Invalid=456, Unknown=0, NotChecked=0, Total=506 [2024-12-02 11:20:52,511 INFO L435 NwaCegarLoop]: 213 mSDtfsCounter, 3 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:20:52,512 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 841 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:20:52,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-12-02 11:20:52,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 177. [2024-12-02 11:20:52,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 114 states have (on average 1.2105263157894737) internal successors, (138), 116 states have internal predecessors, (138), 44 states have call successors, (44), 17 states have call predecessors, (44), 18 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2024-12-02 11:20:52,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 226 transitions. [2024-12-02 11:20:52,528 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 226 transitions. Word has length 170 [2024-12-02 11:20:52,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:20:52,529 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 226 transitions. [2024-12-02 11:20:52,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-12-02 11:20:52,529 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 226 transitions. [2024-12-02 11:20:52,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-12-02 11:20:52,531 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:20:52,531 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:20:52,546 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 11:20:52,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:20:52,731 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:20:52,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:20:52,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1656016654, now seen corresponding path program 1 times [2024-12-02 11:20:52,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:20:52,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85140230] [2024-12-02 11:20:52,732 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:20:52,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:20:57,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:20:59,904 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2024-12-02 11:20:59,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:20:59,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85140230] [2024-12-02 11:20:59,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85140230] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:20:59,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299611683] [2024-12-02 11:20:59,905 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:20:59,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:20:59,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:20:59,907 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:20:59,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 11:21:06,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:21:06,130 INFO L256 TraceCheckSpWp]: Trace formula consists of 4581 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-12-02 11:21:06,135 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:21:06,623 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 [2024-12-02 11:21:07,717 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-12-02 11:21:07,717 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:21:07,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299611683] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:21:07,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:21:07,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2024-12-02 11:21:07,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213126869] [2024-12-02 11:21:07,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:21:07,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 11:21:07,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:21:07,718 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 11:21:07,718 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2024-12-02 11:21:07,718 INFO L87 Difference]: Start difference. First operand 177 states and 226 transitions. Second operand has 9 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2024-12-02 11:21:11,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 11:21:16,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 11:21:20,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 11:21:24,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 11:21:31,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 11:21:35,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 11:21:35,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:21:35,725 INFO L93 Difference]: Finished difference Result 417 states and 523 transitions. [2024-12-02 11:21:35,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 11:21:35,725 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) Word has length 170 [2024-12-02 11:21:35,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:21:35,727 INFO L225 Difference]: With dead ends: 417 [2024-12-02 11:21:35,727 INFO L226 Difference]: Without dead ends: 267 [2024-12-02 11:21:35,728 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2024-12-02 11:21:35,729 INFO L435 NwaCegarLoop]: 239 mSDtfsCounter, 333 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 100 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.2s IncrementalHoareTripleChecker+Time [2024-12-02 11:21:35,729 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 1153 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 360 Invalid, 6 Unknown, 0 Unchecked, 27.2s Time] [2024-12-02 11:21:35,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2024-12-02 11:21:35,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 263. [2024-12-02 11:21:35,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 178 states have (on average 1.2303370786516854) internal successors, (219), 181 states have internal predecessors, (219), 53 states have call successors, (53), 28 states have call predecessors, (53), 31 states have return successors, (55), 53 states have call predecessors, (55), 52 states have call successors, (55) [2024-12-02 11:21:35,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 327 transitions. [2024-12-02 11:21:35,749 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 327 transitions. Word has length 170 [2024-12-02 11:21:35,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:21:35,750 INFO L471 AbstractCegarLoop]: Abstraction has 263 states and 327 transitions. [2024-12-02 11:21:35,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2024-12-02 11:21:35,750 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 327 transitions. [2024-12-02 11:21:35,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-12-02 11:21:35,751 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:21:35,751 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:21:35,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 11:21:35,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:21:35,952 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:21:35,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:21:35,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1118247193, now seen corresponding path program 1 times [2024-12-02 11:21:35,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:21:35,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234022325] [2024-12-02 11:21:35,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:21:35,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:21:40,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:21:42,504 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2024-12-02 11:21:42,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:21:42,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234022325] [2024-12-02 11:21:42,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234022325] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:21:42,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242806047] [2024-12-02 11:21:42,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:21:42,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:21:42,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:21:42,506 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:21:42,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 11:21:48,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:21:48,445 INFO L256 TraceCheckSpWp]: Trace formula consists of 4608 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-12-02 11:21:48,450 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:21:48,949 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 [2024-12-02 11:21:52,567 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-12-02 11:21:52,567 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:21:52,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242806047] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:21:52,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:21:52,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2024-12-02 11:21:52,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786190751] [2024-12-02 11:21:52,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:21:52,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 11:21:52,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:21:52,569 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 11:21:52,569 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2024-12-02 11:21:52,569 INFO L87 Difference]: Start difference. First operand 263 states and 327 transitions. Second operand has 11 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 6 states have call successors, (29), 4 states have call predecessors, (29), 4 states have return successors, (27), 5 states have call predecessors, (27), 6 states have call successors, (27) [2024-12-02 11:21:56,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 11:22:00,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 11:22:04,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 11:22:09,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 11:22:16,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 11:22:21,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 11:22:21,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:22:21,524 INFO L93 Difference]: Finished difference Result 386 states and 485 transitions. [2024-12-02 11:22:21,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 11:22:21,524 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 6 states have call successors, (29), 4 states have call predecessors, (29), 4 states have return successors, (27), 5 states have call predecessors, (27), 6 states have call successors, (27) Word has length 179 [2024-12-02 11:22:21,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:22:21,527 INFO L225 Difference]: With dead ends: 386 [2024-12-02 11:22:21,527 INFO L226 Difference]: Without dead ends: 265 [2024-12-02 11:22:21,528 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 164 SyntacticMatches, 8 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=96, Invalid=606, Unknown=0, NotChecked=0, Total=702 [2024-12-02 11:22:21,529 INFO L435 NwaCegarLoop]: 236 mSDtfsCounter, 305 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 87 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.8s IncrementalHoareTripleChecker+Time [2024-12-02 11:22:21,529 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 1175 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 470 Invalid, 6 Unknown, 0 Unchecked, 27.8s Time] [2024-12-02 11:22:21,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2024-12-02 11:22:21,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 261. [2024-12-02 11:22:21,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 177 states have (on average 1.2259887005649717) internal successors, (217), 179 states have internal predecessors, (217), 53 states have call successors, (53), 28 states have call predecessors, (53), 30 states have return successors, (54), 53 states have call predecessors, (54), 52 states have call successors, (54) [2024-12-02 11:22:21,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 324 transitions. [2024-12-02 11:22:21,554 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 324 transitions. Word has length 179 [2024-12-02 11:22:21,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:22:21,555 INFO L471 AbstractCegarLoop]: Abstraction has 261 states and 324 transitions. [2024-12-02 11:22:21,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 6 states have call successors, (29), 4 states have call predecessors, (29), 4 states have return successors, (27), 5 states have call predecessors, (27), 6 states have call successors, (27) [2024-12-02 11:22:21,555 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 324 transitions. [2024-12-02 11:22:21,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-12-02 11:22:21,557 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:22:21,557 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:22:21,572 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 11:22:21,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:22:21,757 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:22:21,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:22:21,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1555383496, now seen corresponding path program 1 times [2024-12-02 11:22:21,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:22:21,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575065966] [2024-12-02 11:22:21,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:22:21,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:22:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:22:28,237 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-12-02 11:22:28,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:22:28,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575065966] [2024-12-02 11:22:28,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575065966] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:22:28,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659570152] [2024-12-02 11:22:28,238 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:22:28,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:22:28,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:22:28,239 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:22:28,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 11:22:34,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:22:34,444 INFO L256 TraceCheckSpWp]: Trace formula consists of 4635 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-12-02 11:22:34,449 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:22:34,833 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 [2024-12-02 11:22:35,854 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-12-02 11:22:35,854 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:22:35,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659570152] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:22:35,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:22:35,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 15 [2024-12-02 11:22:35,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258511814] [2024-12-02 11:22:35,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:22:35,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 11:22:35,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:22:35,856 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 11:22:35,856 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-12-02 11:22:35,856 INFO L87 Difference]: Start difference. First operand 261 states and 324 transitions. Second operand has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 9 states have internal predecessors, (89), 4 states have call successors, (29), 3 states have call predecessors, (29), 4 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2024-12-02 11:22:39,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:22:39,751 INFO L93 Difference]: Finished difference Result 487 states and 610 transitions. [2024-12-02 11:22:39,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 11:22:39,752 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 9 states have internal predecessors, (89), 4 states have call successors, (29), 3 states have call predecessors, (29), 4 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 188 [2024-12-02 11:22:39,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:22:39,753 INFO L225 Difference]: With dead ends: 487 [2024-12-02 11:22:39,753 INFO L226 Difference]: Without dead ends: 290 [2024-12-02 11:22:39,754 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2024-12-02 11:22:39,754 INFO L435 NwaCegarLoop]: 241 mSDtfsCounter, 201 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 1313 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-12-02 11:22:39,754 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 1313 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-12-02 11:22:39,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2024-12-02 11:22:39,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 279. [2024-12-02 11:22:39,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 192 states have (on average 1.2239583333333333) internal successors, (235), 195 states have internal predecessors, (235), 53 states have call successors, (53), 30 states have call predecessors, (53), 33 states have return successors, (55), 53 states have call predecessors, (55), 52 states have call successors, (55) [2024-12-02 11:22:39,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 343 transitions. [2024-12-02 11:22:39,773 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 343 transitions. Word has length 188 [2024-12-02 11:22:39,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:22:39,773 INFO L471 AbstractCegarLoop]: Abstraction has 279 states and 343 transitions. [2024-12-02 11:22:39,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 9 states have internal predecessors, (89), 4 states have call successors, (29), 3 states have call predecessors, (29), 4 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2024-12-02 11:22:39,773 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 343 transitions. [2024-12-02 11:22:39,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-12-02 11:22:39,774 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:22:39,774 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:22:39,790 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 11:22:39,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:22:39,975 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:22:39,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:22:39,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1067336390, now seen corresponding path program 1 times [2024-12-02 11:22:39,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:22:39,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466121259] [2024-12-02 11:22:39,975 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:22:39,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:22:44,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:22:44,738 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-12-02 11:22:44,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:22:44,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466121259] [2024-12-02 11:22:44,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466121259] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:22:44,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786639034] [2024-12-02 11:22:44,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:22:44,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:22:44,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:22:44,740 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:22:44,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 11:22:50,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:22:50,776 INFO L256 TraceCheckSpWp]: Trace formula consists of 4630 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 11:22:50,780 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:22:51,352 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-12-02 11:22:51,352 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:22:51,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786639034] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:22:51,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:22:51,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-12-02 11:22:51,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077567072] [2024-12-02 11:22:51,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:22:51,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:22:51,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:22:51,353 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:22:51,353 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 11:22:51,353 INFO L87 Difference]: Start difference. First operand 279 states and 343 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2024-12-02 11:22:52,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:22:52,226 INFO L93 Difference]: Finished difference Result 493 states and 616 transitions. [2024-12-02 11:22:52,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 11:22:52,226 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 188 [2024-12-02 11:22:52,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:22:52,228 INFO L225 Difference]: With dead ends: 493 [2024-12-02 11:22:52,228 INFO L226 Difference]: Without dead ends: 291 [2024-12-02 11:22:52,228 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-12-02 11:22:52,229 INFO L435 NwaCegarLoop]: 193 mSDtfsCounter, 215 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 11:22:52,229 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 546 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 11:22:52,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-12-02 11:22:52,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 281. [2024-12-02 11:22:52,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 193 states have (on average 1.2227979274611398) internal successors, (236), 196 states have internal predecessors, (236), 54 states have call successors, (54), 30 states have call predecessors, (54), 33 states have return successors, (56), 54 states have call predecessors, (56), 53 states have call successors, (56) [2024-12-02 11:22:52,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 346 transitions. [2024-12-02 11:22:52,247 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 346 transitions. Word has length 188 [2024-12-02 11:22:52,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:22:52,247 INFO L471 AbstractCegarLoop]: Abstraction has 281 states and 346 transitions. [2024-12-02 11:22:52,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2024-12-02 11:22:52,248 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 346 transitions. [2024-12-02 11:22:52,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-12-02 11:22:52,249 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:22:52,249 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:22:52,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 11:22:52,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:22:52,449 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:22:52,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:22:52,450 INFO L85 PathProgramCache]: Analyzing trace with hash 123321630, now seen corresponding path program 1 times [2024-12-02 11:22:52,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:22:52,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905800009] [2024-12-02 11:22:52,450 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:22:52,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:22:56,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:22:58,165 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-12-02 11:22:58,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:22:58,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905800009] [2024-12-02 11:22:58,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905800009] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:22:58,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606572842] [2024-12-02 11:22:58,166 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:22:58,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:22:58,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:22:58,167 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:22:58,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 11:23:04,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:23:04,378 INFO L256 TraceCheckSpWp]: Trace formula consists of 4659 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-12-02 11:23:04,383 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:23:05,098 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 [2024-12-02 11:23:06,797 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-12-02 11:23:06,797 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:23:06,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606572842] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:23:06,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:23:06,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [7] total 17 [2024-12-02 11:23:06,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610369450] [2024-12-02 11:23:06,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:23:06,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 11:23:06,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:23:06,798 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 11:23:06,798 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2024-12-02 11:23:06,799 INFO L87 Difference]: Start difference. First operand 281 states and 346 transitions. Second operand has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 5 states have call successors, (30), 3 states have call predecessors, (30), 5 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2024-12-02 11:23:11,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:23:11,713 INFO L93 Difference]: Finished difference Result 507 states and 631 transitions. [2024-12-02 11:23:11,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 11:23:11,714 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 5 states have call successors, (30), 3 states have call predecessors, (30), 5 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) Word has length 194 [2024-12-02 11:23:11,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:23:11,716 INFO L225 Difference]: With dead ends: 507 [2024-12-02 11:23:11,716 INFO L226 Difference]: Without dead ends: 303 [2024-12-02 11:23:11,716 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2024-12-02 11:23:11,717 INFO L435 NwaCegarLoop]: 240 mSDtfsCounter, 152 mSDsluCounter, 1565 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 1805 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-12-02 11:23:11,717 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 1805 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-12-02 11:23:11,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2024-12-02 11:23:11,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 283. [2024-12-02 11:23:11,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 194 states have (on average 1.2216494845360826) internal successors, (237), 198 states have internal predecessors, (237), 54 states have call successors, (54), 30 states have call predecessors, (54), 34 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2024-12-02 11:23:11,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 349 transitions. [2024-12-02 11:23:11,738 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 349 transitions. Word has length 194 [2024-12-02 11:23:11,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:23:11,738 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 349 transitions. [2024-12-02 11:23:11,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 5 states have call successors, (30), 3 states have call predecessors, (30), 5 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2024-12-02 11:23:11,739 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 349 transitions. [2024-12-02 11:23:11,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-12-02 11:23:11,740 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:23:11,740 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:23:11,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 11:23:11,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:23:11,941 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:23:11,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:23:11,941 INFO L85 PathProgramCache]: Analyzing trace with hash -97102823, now seen corresponding path program 1 times [2024-12-02 11:23:11,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:23:11,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397588499] [2024-12-02 11:23:11,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:23:11,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:23:16,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:23:20,691 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-12-02 11:23:20,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:23:20,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397588499] [2024-12-02 11:23:20,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397588499] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:23:20,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58664813] [2024-12-02 11:23:20,691 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:23:20,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:23:20,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:23:20,693 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:23:20,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 11:23:27,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:23:27,292 INFO L256 TraceCheckSpWp]: Trace formula consists of 4691 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-12-02 11:23:27,296 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:23:31,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2024-12-02 11:23:32,914 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 9 proven. 145 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-12-02 11:23:32,914 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:23:34,893 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 70 treesize of output 64 [2024-12-02 11:23:37,788 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2024-12-02 11:23:37,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58664813] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:23:37,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:23:37,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 11] total 34 [2024-12-02 11:23:37,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467362784] [2024-12-02 11:23:37,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:23:37,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-12-02 11:23:37,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:23:37,790 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-12-02 11:23:37,790 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=1042, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 11:23:37,791 INFO L87 Difference]: Start difference. First operand 283 states and 349 transitions. Second operand has 34 states, 30 states have (on average 6.1) internal successors, (183), 30 states have internal predecessors, (183), 13 states have call successors, (77), 6 states have call predecessors, (77), 9 states have return successors, (71), 13 states have call predecessors, (71), 12 states have call successors, (71) [2024-12-02 11:23:57,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:23:57,866 INFO L93 Difference]: Finished difference Result 553 states and 707 transitions. [2024-12-02 11:23:57,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-12-02 11:23:57,867 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 30 states have (on average 6.1) internal successors, (183), 30 states have internal predecessors, (183), 13 states have call successors, (77), 6 states have call predecessors, (77), 9 states have return successors, (71), 13 states have call predecessors, (71), 12 states have call successors, (71) Word has length 201 [2024-12-02 11:23:57,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:23:57,869 INFO L225 Difference]: With dead ends: 553 [2024-12-02 11:23:57,870 INFO L226 Difference]: Without dead ends: 354 [2024-12-02 11:23:57,871 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=255, Invalid=3527, Unknown=0, NotChecked=0, Total=3782 [2024-12-02 11:23:57,871 INFO L435 NwaCegarLoop]: 149 mSDtfsCounter, 280 mSDsluCounter, 3494 mSDsCounter, 0 mSdLazyCounter, 1937 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 3643 SdHoareTripleChecker+Invalid, 2069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2024-12-02 11:23:57,872 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 3643 Invalid, 2069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1937 Invalid, 0 Unknown, 0 Unchecked, 13.6s Time] [2024-12-02 11:23:57,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2024-12-02 11:23:57,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 304. [2024-12-02 11:23:57,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 212 states have (on average 1.2452830188679245) internal successors, (264), 217 states have internal predecessors, (264), 54 states have call successors, (54), 30 states have call predecessors, (54), 37 states have return successors, (62), 56 states have call predecessors, (62), 53 states have call successors, (62) [2024-12-02 11:23:57,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 380 transitions. [2024-12-02 11:23:57,899 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 380 transitions. Word has length 201 [2024-12-02 11:23:57,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:23:57,899 INFO L471 AbstractCegarLoop]: Abstraction has 304 states and 380 transitions. [2024-12-02 11:23:57,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 30 states have (on average 6.1) internal successors, (183), 30 states have internal predecessors, (183), 13 states have call successors, (77), 6 states have call predecessors, (77), 9 states have return successors, (71), 13 states have call predecessors, (71), 12 states have call successors, (71) [2024-12-02 11:23:57,900 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 380 transitions. [2024-12-02 11:23:57,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-12-02 11:23:57,901 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:23:57,901 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:23:57,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 11:23:58,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:23:58,101 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:23:58,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:23:58,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1159764231, now seen corresponding path program 1 times [2024-12-02 11:23:58,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:23:58,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728686934] [2024-12-02 11:23:58,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:23:58,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:24:02,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:24:03,817 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2024-12-02 11:24:03,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:24:03,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728686934] [2024-12-02 11:24:03,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728686934] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:24:03,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918629872] [2024-12-02 11:24:03,818 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:24:03,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:24:03,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:24:03,820 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:24:03,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 11:24:10,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:24:10,392 INFO L256 TraceCheckSpWp]: Trace formula consists of 4694 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-12-02 11:24:10,396 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:24:10,795 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 [2024-12-02 11:24:12,408 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-12-02 11:24:12,408 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:24:12,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918629872] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:24:12,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:24:12,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2024-12-02 11:24:12,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019600207] [2024-12-02 11:24:12,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:24:12,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 11:24:12,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:24:12,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 11:24:12,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-12-02 11:24:12,410 INFO L87 Difference]: Start difference. First operand 304 states and 380 transitions. Second operand has 11 states, 9 states have (on average 11.333333333333334) internal successors, (102), 10 states have internal predecessors, (102), 5 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) [2024-12-02 11:24:16,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 11:24:20,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 11:24:24,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 11:24:28,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 11:24:38,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 11:24:42,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 11:24:43,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:24:43,092 INFO L93 Difference]: Finished difference Result 553 states and 705 transitions. [2024-12-02 11:24:43,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 11:24:43,092 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 11.333333333333334) internal successors, (102), 10 states have internal predecessors, (102), 5 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) Word has length 202 [2024-12-02 11:24:43,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:24:43,095 INFO L225 Difference]: With dead ends: 553 [2024-12-02 11:24:43,095 INFO L226 Difference]: Without dead ends: 333 [2024-12-02 11:24:43,096 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2024-12-02 11:24:43,096 INFO L435 NwaCegarLoop]: 259 mSDtfsCounter, 343 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 98 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 1293 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.2s IncrementalHoareTripleChecker+Time [2024-12-02 11:24:43,096 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 1293 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 550 Invalid, 6 Unknown, 0 Unchecked, 29.2s Time] [2024-12-02 11:24:43,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2024-12-02 11:24:43,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 306. [2024-12-02 11:24:43,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 213 states have (on average 1.244131455399061) internal successors, (265), 218 states have internal predecessors, (265), 55 states have call successors, (55), 30 states have call predecessors, (55), 37 states have return successors, (63), 57 states have call predecessors, (63), 54 states have call successors, (63) [2024-12-02 11:24:43,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 383 transitions. [2024-12-02 11:24:43,120 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 383 transitions. Word has length 202 [2024-12-02 11:24:43,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:24:43,120 INFO L471 AbstractCegarLoop]: Abstraction has 306 states and 383 transitions. [2024-12-02 11:24:43,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 11.333333333333334) internal successors, (102), 10 states have internal predecessors, (102), 5 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) [2024-12-02 11:24:43,120 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 383 transitions. [2024-12-02 11:24:43,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-12-02 11:24:43,121 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:24:43,121 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:24:43,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 11:24:43,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:24:43,322 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:24:43,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:24:43,322 INFO L85 PathProgramCache]: Analyzing trace with hash -123335979, now seen corresponding path program 1 times [2024-12-02 11:24:43,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:24:43,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883111470] [2024-12-02 11:24:43,323 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:24:43,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:24:48,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:24:50,067 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2024-12-02 11:24:50,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:24:50,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883111470] [2024-12-02 11:24:50,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883111470] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:24:50,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603830494] [2024-12-02 11:24:50,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:24:50,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:24:50,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:24:50,069 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:24:50,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 11:24:57,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:24:57,355 INFO L256 TraceCheckSpWp]: Trace formula consists of 4723 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-12-02 11:24:57,361 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:24:58,308 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 [2024-12-02 11:24:59,662 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 [2024-12-02 11:24:59,692 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 [2024-12-02 11:25:03,216 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-12-02 11:25:03,216 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:25:03,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603830494] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:25:03,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:25:03,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [7] total 22 [2024-12-02 11:25:03,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501511904] [2024-12-02 11:25:03,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:25:03,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 11:25:03,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:25:03,217 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 11:25:03,217 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2024-12-02 11:25:03,218 INFO L87 Difference]: Start difference. First operand 306 states and 383 transitions. Second operand has 17 states, 14 states have (on average 8.071428571428571) internal successors, (113), 15 states have internal predecessors, (113), 8 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (31), 8 states have call predecessors, (31), 8 states have call successors, (31) [2024-12-02 11:25:11,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:25:11,771 INFO L93 Difference]: Finished difference Result 581 states and 744 transitions. [2024-12-02 11:25:11,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-12-02 11:25:11,771 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 8.071428571428571) internal successors, (113), 15 states have internal predecessors, (113), 8 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (31), 8 states have call predecessors, (31), 8 states have call successors, (31) Word has length 208 [2024-12-02 11:25:11,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:25:11,774 INFO L225 Difference]: With dead ends: 581 [2024-12-02 11:25:11,774 INFO L226 Difference]: Without dead ends: 359 [2024-12-02 11:25:11,776 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 191 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=95, Invalid=607, Unknown=0, NotChecked=0, Total=702 [2024-12-02 11:25:11,776 INFO L435 NwaCegarLoop]: 270 mSDtfsCounter, 260 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 2030 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2024-12-02 11:25:11,777 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 2030 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2024-12-02 11:25:11,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2024-12-02 11:25:11,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 308. [2024-12-02 11:25:11,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 214 states have (on average 1.2429906542056075) internal successors, (266), 220 states have internal predecessors, (266), 55 states have call successors, (55), 30 states have call predecessors, (55), 38 states have return successors, (65), 57 states have call predecessors, (65), 54 states have call successors, (65) [2024-12-02 11:25:11,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 386 transitions. [2024-12-02 11:25:11,820 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 386 transitions. Word has length 208 [2024-12-02 11:25:11,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:25:11,821 INFO L471 AbstractCegarLoop]: Abstraction has 308 states and 386 transitions. [2024-12-02 11:25:11,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 8.071428571428571) internal successors, (113), 15 states have internal predecessors, (113), 8 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (31), 8 states have call predecessors, (31), 8 states have call successors, (31) [2024-12-02 11:25:11,821 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 386 transitions. [2024-12-02 11:25:11,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-12-02 11:25:11,822 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:25:11,823 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:25:11,845 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-02 11:25:12,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:25:12,023 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:25:12,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:25:12,024 INFO L85 PathProgramCache]: Analyzing trace with hash -123157040, now seen corresponding path program 1 times [2024-12-02 11:25:12,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:25:12,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299089372] [2024-12-02 11:25:12,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:25:12,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:25:16,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:25:22,224 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 18 proven. 10 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2024-12-02 11:25:22,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:25:22,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299089372] [2024-12-02 11:25:22,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299089372] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:25:22,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387231411] [2024-12-02 11:25:22,225 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:25:22,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:25:22,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:25:22,226 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:25:22,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 11:25:29,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:25:29,184 INFO L256 TraceCheckSpWp]: Trace formula consists of 4755 conjuncts, 82 conjuncts are in the unsatisfiable core [2024-12-02 11:25:29,190 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:25:29,207 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 [2024-12-02 11:25:29,220 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 [2024-12-02 11:25:34,317 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((|v_aws_hash_table_is_valid_#in~map.base_BEFORE_CALL_3| Int) (|v_aws_hash_table_is_valid_#in~map.offset_BEFORE_CALL_3| Int)) (not (= (select (select |c_#memory_$Pointer$#2.offset| |v_aws_hash_table_is_valid_#in~map.base_BEFORE_CALL_3|) |v_aws_hash_table_is_valid_#in~map.offset_BEFORE_CALL_3|) 0))) (exists ((|v_aws_hash_table_is_valid_#in~map.base_BEFORE_CALL_3| Int) (|v_aws_hash_table_is_valid_#in~map.offset_BEFORE_CALL_3| Int)) (not (= (select (select |c_#memory_$Pointer$#2.base| |v_aws_hash_table_is_valid_#in~map.base_BEFORE_CALL_3|) |v_aws_hash_table_is_valid_#in~map.offset_BEFORE_CALL_3|) 0)))) is different from true [2024-12-02 11:25:43,176 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 215 proven. 6 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-12-02 11:25:43,176 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:25:50,375 INFO L349 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2024-12-02 11:25:50,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 31 [2024-12-02 11:25:50,434 INFO L349 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2024-12-02 11:25:50,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 12 [2024-12-02 11:25:51,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387231411] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:25:51,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 11:25:51,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 21] total 32 [2024-12-02 11:25:51,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747460765] [2024-12-02 11:25:51,285 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 11:25:51,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-12-02 11:25:51,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:25:51,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-12-02 11:25:51,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1351, Unknown=1, NotChecked=74, Total=1560 [2024-12-02 11:25:51,287 INFO L87 Difference]: Start difference. First operand 308 states and 386 transitions. Second operand has 32 states, 28 states have (on average 5.5) internal successors, (154), 29 states have internal predecessors, (154), 13 states have call successors, (56), 6 states have call predecessors, (56), 11 states have return successors, (53), 13 states have call predecessors, (53), 13 states have call successors, (53) [2024-12-02 11:25:55,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 11:26:12,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 11:26:16,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 11:26:28,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:26:28,296 INFO L93 Difference]: Finished difference Result 698 states and 916 transitions. [2024-12-02 11:26:28,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-12-02 11:26:28,297 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 28 states have (on average 5.5) internal successors, (154), 29 states have internal predecessors, (154), 13 states have call successors, (56), 6 states have call predecessors, (56), 11 states have return successors, (53), 13 states have call predecessors, (53), 13 states have call successors, (53) Word has length 215 [2024-12-02 11:26:28,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:26:28,299 INFO L225 Difference]: With dead ends: 698 [2024-12-02 11:26:28,300 INFO L226 Difference]: Without dead ends: 533 [2024-12-02 11:26:28,301 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 297 SyntacticMatches, 8 SemanticMatches, 65 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 22.3s TimeCoverageRelationStatistics Valid=404, Invalid=3889, Unknown=1, NotChecked=128, Total=4422 [2024-12-02 11:26:28,301 INFO L435 NwaCegarLoop]: 296 mSDtfsCounter, 365 mSDsluCounter, 4460 mSDsCounter, 0 mSdLazyCounter, 2510 mSolverCounterSat, 85 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 4756 SdHoareTripleChecker+Invalid, 3502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2510 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 904 IncrementalHoareTripleChecker+Unchecked, 30.2s IncrementalHoareTripleChecker+Time [2024-12-02 11:26:28,302 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 4756 Invalid, 3502 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [85 Valid, 2510 Invalid, 3 Unknown, 904 Unchecked, 30.2s Time] [2024-12-02 11:26:28,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2024-12-02 11:26:28,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 445. [2024-12-02 11:26:28,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 316 states have (on average 1.2563291139240507) internal successors, (397), 324 states have internal predecessors, (397), 73 states have call successors, (73), 41 states have call predecessors, (73), 55 states have return successors, (99), 79 states have call predecessors, (99), 71 states have call successors, (99) [2024-12-02 11:26:28,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 569 transitions. [2024-12-02 11:26:28,415 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 569 transitions. Word has length 215 [2024-12-02 11:26:28,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:26:28,415 INFO L471 AbstractCegarLoop]: Abstraction has 445 states and 569 transitions. [2024-12-02 11:26:28,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 28 states have (on average 5.5) internal successors, (154), 29 states have internal predecessors, (154), 13 states have call successors, (56), 6 states have call predecessors, (56), 11 states have return successors, (53), 13 states have call predecessors, (53), 13 states have call successors, (53) [2024-12-02 11:26:28,416 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 569 transitions. [2024-12-02 11:26:28,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-12-02 11:26:28,417 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:26:28,417 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:26:28,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-12-02 11:26:28,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:26:28,618 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:26:28,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:26:28,618 INFO L85 PathProgramCache]: Analyzing trace with hash -138675758, now seen corresponding path program 2 times [2024-12-02 11:26:28,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:26:28,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141854321] [2024-12-02 11:26:28,619 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 11:26:28,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:26:33,173 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 11:26:33,173 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:26:34,651 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 17 proven. 9 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2024-12-02 11:26:34,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:26:34,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141854321] [2024-12-02 11:26:34,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141854321] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:26:34,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607356602] [2024-12-02 11:26:34,651 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 11:26:34,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:26:34,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:26:34,653 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:26:34,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8282b486-0baa-4cc5-85fa-f753288caf23/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process