./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_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_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4c102a8320469121bebf24ca3406288a96f198533855b78a0cc2eda1e300f8b5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 19:49:21,204 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 19:49:21,314 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-27 19:49:21,320 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 19:49:21,321 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 19:49:21,357 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 19:49:21,358 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 19:49:21,358 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 19:49:21,359 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 19:49:21,359 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 19:49:21,359 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 19:49:21,359 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 19:49:21,360 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 19:49:21,360 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 19:49:21,360 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 19:49:21,360 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 19:49:21,360 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 19:49:21,360 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 19:49:21,362 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 19:49:21,362 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 19:49:21,362 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 19:49:21,362 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 19:49:21,362 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 19:49:21,362 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 19:49:21,362 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 19:49:21,362 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 19:49:21,363 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 19:49:21,363 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 19:49:21,363 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 19:49:21,363 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:49:21,363 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 19:49:21,363 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 19:49:21,363 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 19:49:21,363 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 19:49:21,363 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:49:21,364 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 19:49:21,364 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 19:49:21,364 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 19:49:21,364 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 19:49:21,364 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 19:49:21,364 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 19:49:21,364 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 19:49:21,364 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 19:49:21,364 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 19:49:21,365 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 19:49:21,365 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_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c102a8320469121bebf24ca3406288a96f198533855b78a0cc2eda1e300f8b5 [2024-11-27 19:49:21,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 19:49:21,711 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 19:49:21,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 19:49:21,715 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 19:49:21,716 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 19:49:21,719 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i [2024-11-27 19:49:24,592 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/data/277781a4b/fdd6791377fb46bb91055025c6623be8/FLAG5d50ec092 [2024-11-27 19:49:25,267 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 19:49:25,268 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i [2024-11-27 19:49:25,318 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/data/277781a4b/fdd6791377fb46bb91055025c6623be8/FLAG5d50ec092 [2024-11-27 19:49:25,342 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/data/277781a4b/fdd6791377fb46bb91055025c6623be8 [2024-11-27 19:49:25,345 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 19:49:25,347 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 19:49:25,348 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 19:49:25,349 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 19:49:25,355 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 19:49:25,356 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 07:49:25" (1/1) ... [2024-11-27 19:49:25,358 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@542953fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:25, skipping insertion in model container [2024-11-27 19:49:25,358 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 07:49:25" (1/1) ... [2024-11-27 19:49:25,475 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 19:49:25,761 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_25073f22-44cb-4869-b445-e13c54c414cf/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i[4498,4511] [2024-11-27 19:49:25,769 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_25073f22-44cb-4869-b445-e13c54c414cf/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i[4558,4571] [2024-11-27 19:49:26,650 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:49:26,651 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:49:26,651 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:49:26,654 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:49:26,656 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:49:26,680 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:49:26,681 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:49:26,683 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:49:26,684 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:49:26,687 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:49:26,689 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:49:26,689 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:49:26,690 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:49:27,351 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i[150656,150669] [2024-11-27 19:49:27,352 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 19:49:27,373 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 19:49:27,394 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_25073f22-44cb-4869-b445-e13c54c414cf/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i[4498,4511] [2024-11-27 19:49:27,395 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_25073f22-44cb-4869-b445-e13c54c414cf/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i[4558,4571] [2024-11-27 19:49:27,468 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:49:27,469 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:49:27,470 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:49:27,473 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:49:27,474 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:49:27,513 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:49:27,515 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:49:27,516 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:49:27,517 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:49:27,519 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:49:27,519 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:49:27,520 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:49:27,520 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 19:49:27,644 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i[150656,150669] [2024-11-27 19:49:27,646 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 19:49:27,863 INFO L204 MainTranslator]: Completed translation [2024-11-27 19:49:27,863 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:27 WrapperNode [2024-11-27 19:49:27,864 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 19:49:27,864 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 19:49:27,864 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 19:49:27,865 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 19:49:27,869 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:27" (1/1) ... [2024-11-27 19:49:27,933 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:27" (1/1) ... [2024-11-27 19:49:27,993 INFO L138 Inliner]: procedures = 668, calls = 1044, calls flagged for inlining = 53, calls inlined = 8, statements flattened = 223 [2024-11-27 19:49:27,993 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 19:49:27,995 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 19:49:27,995 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 19:49:27,995 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 19:49:28,004 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:27" (1/1) ... [2024-11-27 19:49:28,004 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:27" (1/1) ... [2024-11-27 19:49:28,009 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:27" (1/1) ... [2024-11-27 19:49:28,054 INFO L175 MemorySlicer]: Split 43 memory accesses to 3 slices as follows [2, 5, 36]. 84 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 9 writes are split as follows [0, 0, 9]. [2024-11-27 19:49:28,054 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:27" (1/1) ... [2024-11-27 19:49:28,054 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:27" (1/1) ... [2024-11-27 19:49:28,084 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:27" (1/1) ... [2024-11-27 19:49:28,089 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:27" (1/1) ... [2024-11-27 19:49:28,095 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:27" (1/1) ... [2024-11-27 19:49:28,103 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:27" (1/1) ... [2024-11-27 19:49:28,108 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:27" (1/1) ... [2024-11-27 19:49:28,113 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 19:49:28,118 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 19:49:28,118 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 19:49:28,118 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 19:49:28,119 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:27" (1/1) ... [2024-11-27 19:49:28,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:49:28,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:49:28,167 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 19:49:28,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 19:49:28,200 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2024-11-27 19:49:28,200 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2024-11-27 19:49:28,200 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_remove [2024-11-27 19:49:28,201 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_remove [2024-11-27 19:49:28,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-27 19:49:28,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-27 19:49:28,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-27 19:49:28,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-27 19:49:28,202 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-27 19:49:28,202 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-27 19:49:28,203 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2024-11-27 19:49:28,203 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2024-11-27 19:49:28,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-27 19:49:28,203 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2024-11-27 19:49:28,203 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2024-11-27 19:49:28,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 19:49:28,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-27 19:49:28,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-27 19:49:28,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-27 19:49:28,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 19:49:28,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 19:49:28,204 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_empty [2024-11-27 19:49:28,204 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_empty [2024-11-27 19:49:28,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-27 19:49:28,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-27 19:49:28,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-27 19:49:28,204 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-27 19:49:28,204 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-27 19:49:28,204 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-27 19:49:28,204 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-27 19:49:28,204 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-27 19:49:28,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-27 19:49:28,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-27 19:49:28,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-27 19:49:28,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-27 19:49:28,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-27 19:49:28,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-27 19:49:28,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-27 19:49:28,207 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-27 19:49:28,207 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-27 19:49:28,207 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2024-11-27 19:49:28,207 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2024-11-27 19:49:28,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 19:49:28,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 19:49:28,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-27 19:49:28,552 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 19:49:28,555 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 19:49:29,160 INFO L? ?]: Removed 105 outVars from TransFormulas that were not future-live. [2024-11-27 19:49:29,160 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 19:49:29,179 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 19:49:29,179 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-27 19:49:29,179 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 07:49:29 BoogieIcfgContainer [2024-11-27 19:49:29,179 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 19:49:29,181 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 19:49:29,184 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 19:49:29,190 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 19:49:29,190 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 07:49:25" (1/3) ... [2024-11-27 19:49:29,191 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a618bbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 07:49:29, skipping insertion in model container [2024-11-27 19:49:29,191 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:27" (2/3) ... [2024-11-27 19:49:29,192 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a618bbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 07:49:29, skipping insertion in model container [2024-11-27 19:49:29,192 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 07:49:29" (3/3) ... [2024-11-27 19:49:29,194 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_linked_list_pop_back_harness.i [2024-11-27 19:49:29,214 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 19:49:29,217 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_linked_list_pop_back_harness.i that has 13 procedures, 145 locations, 1 initial locations, 7 loop locations, and 1 error locations. [2024-11-27 19:49:29,292 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 19:49:29,307 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;@7a577b11, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 19:49:29,309 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 19:49:29,314 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 89 states have (on average 1.303370786516854) internal successors, (116), 90 states have internal predecessors, (116), 37 states have call successors, (37), 10 states have call predecessors, (37), 10 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-11-27 19:49:29,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-27 19:49:29,327 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:29,328 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:29,329 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:29,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:29,335 INFO L85 PathProgramCache]: Analyzing trace with hash -629864822, now seen corresponding path program 1 times [2024-11-27 19:49:29,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:29,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673469624] [2024-11-27 19:49:29,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:29,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:29,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:29,871 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2024-11-27 19:49:29,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:29,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673469624] [2024-11-27 19:49:29,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673469624] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:49:29,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498448320] [2024-11-27 19:49:29,872 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:29,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:49:29,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:49:29,875 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:49:29,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 19:49:30,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:30,220 INFO L256 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-27 19:49:30,228 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:49:30,262 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2024-11-27 19:49:30,265 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:49:30,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498448320] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:49:30,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:49:30,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-27 19:49:30,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77328348] [2024-11-27 19:49:30,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:49:30,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 19:49:30,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:30,292 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 19:49:30,293 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 19:49:30,296 INFO L87 Difference]: Start difference. First operand has 137 states, 89 states have (on average 1.303370786516854) internal successors, (116), 90 states have internal predecessors, (116), 37 states have call successors, (37), 10 states have call predecessors, (37), 10 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-27 19:49:30,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:30,345 INFO L93 Difference]: Finished difference Result 266 states and 401 transitions. [2024-11-27 19:49:30,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 19:49:30,347 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 116 [2024-11-27 19:49:30,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:30,361 INFO L225 Difference]: With dead ends: 266 [2024-11-27 19:49:30,361 INFO L226 Difference]: Without dead ends: 132 [2024-11-27 19:49:30,368 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 19:49:30,375 INFO L435 NwaCegarLoop]: 183 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, 183 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:49:30,377 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:49:30,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-27 19:49:30,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2024-11-27 19:49:30,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 84 states have (on average 1.25) internal successors, (105), 85 states have internal predecessors, (105), 37 states have call successors, (37), 10 states have call predecessors, (37), 10 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-27 19:49:30,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 178 transitions. [2024-11-27 19:49:30,447 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 178 transitions. Word has length 116 [2024-11-27 19:49:30,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:30,448 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 178 transitions. [2024-11-27 19:49:30,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-27 19:49:30,448 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 178 transitions. [2024-11-27 19:49:30,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-27 19:49:30,453 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:30,453 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:30,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-27 19:49:30,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:49:30,654 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:30,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:30,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1855713404, now seen corresponding path program 1 times [2024-11-27 19:49:30,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:30,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933576720] [2024-11-27 19:49:30,655 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:30,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:30,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:32,010 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-11-27 19:49:32,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:32,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933576720] [2024-11-27 19:49:32,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933576720] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:49:32,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740544091] [2024-11-27 19:49:32,013 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:32,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:49:32,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:49:32,015 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:49:32,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 19:49:32,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:32,353 INFO L256 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-27 19:49:32,364 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:49:32,723 INFO L349 Elim1Store]: treesize reduction 42, result has 31.1 percent of original size [2024-11-27 19:49:32,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 80 [2024-11-27 19:49:32,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 15 [2024-11-27 19:49:32,779 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:49:32,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 1 [2024-11-27 19:49:32,904 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:49:32,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 29 treesize of output 13 [2024-11-27 19:49:32,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-27 19:49:35,163 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-11-27 19:49:35,163 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:49:35,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740544091] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:49:35,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:49:35,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2024-11-27 19:49:35,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468087292] [2024-11-27 19:49:35,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:49:35,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-27 19:49:35,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:35,166 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-27 19:49:35,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2024-11-27 19:49:35,167 INFO L87 Difference]: Start difference. First operand 132 states and 178 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 6 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-27 19:49:39,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 19:49:43,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 19:49:47,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 19:49:51,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 19:49:55,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 19:50:01,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 19:50:05,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 19:50:09,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 19:50:09,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:09,275 INFO L93 Difference]: Finished difference Result 344 states and 473 transitions. [2024-11-27 19:50:09,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-27 19:50:09,276 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 6 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) Word has length 116 [2024-11-27 19:50:09,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:09,280 INFO L225 Difference]: With dead ends: 344 [2024-11-27 19:50:09,280 INFO L226 Difference]: Without dead ends: 220 [2024-11-27 19:50:09,283 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 87 SyntacticMatches, 20 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=122, Invalid=634, Unknown=0, NotChecked=0, Total=756 [2024-11-27 19:50:09,285 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 380 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 115 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.6s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:09,286 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 761 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 472 Invalid, 8 Unknown, 0 Unchecked, 33.6s Time] [2024-11-27 19:50:09,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-11-27 19:50:09,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 214. [2024-11-27 19:50:09,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 137 states have (on average 1.2627737226277371) internal successors, (173), 139 states have internal predecessors, (173), 60 states have call successors, (60), 17 states have call predecessors, (60), 16 states have return successors, (59), 57 states have call predecessors, (59), 59 states have call successors, (59) [2024-11-27 19:50:09,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 292 transitions. [2024-11-27 19:50:09,341 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 292 transitions. Word has length 116 [2024-11-27 19:50:09,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:09,342 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 292 transitions. [2024-11-27 19:50:09,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 6 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-27 19:50:09,342 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 292 transitions. [2024-11-27 19:50:09,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-27 19:50:09,348 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:09,348 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:09,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 19:50:09,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:09,553 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:09,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:09,554 INFO L85 PathProgramCache]: Analyzing trace with hash -2079877694, now seen corresponding path program 1 times [2024-11-27 19:50:09,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:09,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984162581] [2024-11-27 19:50:09,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:09,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:09,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:10,166 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 20 proven. 8 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-11-27 19:50:10,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:10,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984162581] [2024-11-27 19:50:10,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984162581] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:10,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723271178] [2024-11-27 19:50:10,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:10,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:10,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:10,172 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:10,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 19:50:10,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:10,403 INFO L256 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-11-27 19:50:10,409 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:10,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2024-11-27 19:50:10,582 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 22 treesize of output 7 [2024-11-27 19:50:11,823 INFO L349 Elim1Store]: treesize reduction 30, result has 43.4 percent of original size [2024-11-27 19:50:11,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 39 [2024-11-27 19:50:11,839 INFO L349 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2024-11-27 19:50:11,841 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 17 treesize of output 7 [2024-11-27 19:50:11,927 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 109 proven. 12 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-27 19:50:11,930 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:50:12,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 80 [2024-11-27 19:50:13,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 74 [2024-11-27 19:50:13,226 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 38 proven. 16 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-11-27 19:50:13,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723271178] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:50:13,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:50:13,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 13, 17] total 30 [2024-11-27 19:50:13,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907147395] [2024-11-27 19:50:13,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:50:13,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-27 19:50:13,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:13,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-27 19:50:13,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=791, Unknown=0, NotChecked=0, Total=870 [2024-11-27 19:50:13,230 INFO L87 Difference]: Start difference. First operand 214 states and 292 transitions. Second operand has 30 states, 24 states have (on average 3.9583333333333335) internal successors, (95), 26 states have internal predecessors, (95), 17 states have call successors, (45), 4 states have call predecessors, (45), 9 states have return successors, (43), 15 states have call predecessors, (43), 17 states have call successors, (43) [2024-11-27 19:50:15,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:15,271 INFO L93 Difference]: Finished difference Result 337 states and 455 transitions. [2024-11-27 19:50:15,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-27 19:50:15,272 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 24 states have (on average 3.9583333333333335) internal successors, (95), 26 states have internal predecessors, (95), 17 states have call successors, (45), 4 states have call predecessors, (45), 9 states have return successors, (43), 15 states have call predecessors, (43), 17 states have call successors, (43) Word has length 116 [2024-11-27 19:50:15,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:15,274 INFO L225 Difference]: With dead ends: 337 [2024-11-27 19:50:15,274 INFO L226 Difference]: Without dead ends: 136 [2024-11-27 19:50:15,277 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 206 SyntacticMatches, 4 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=223, Invalid=2129, Unknown=0, NotChecked=0, Total=2352 [2024-11-27 19:50:15,278 INFO L435 NwaCegarLoop]: 157 mSDtfsCounter, 185 mSDsluCounter, 2639 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 2796 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:15,278 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 2796 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-27 19:50:15,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-27 19:50:15,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 135. [2024-11-27 19:50:15,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 86 states have (on average 1.244186046511628) internal successors, (107), 88 states have internal predecessors, (107), 37 states have call successors, (37), 10 states have call predecessors, (37), 11 states have return successors, (40), 36 states have call predecessors, (40), 36 states have call successors, (40) [2024-11-27 19:50:15,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 184 transitions. [2024-11-27 19:50:15,306 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 184 transitions. Word has length 116 [2024-11-27 19:50:15,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:15,308 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 184 transitions. [2024-11-27 19:50:15,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 24 states have (on average 3.9583333333333335) internal successors, (95), 26 states have internal predecessors, (95), 17 states have call successors, (45), 4 states have call predecessors, (45), 9 states have return successors, (43), 15 states have call predecessors, (43), 17 states have call successors, (43) [2024-11-27 19:50:15,308 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 184 transitions. [2024-11-27 19:50:15,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-27 19:50:15,310 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:15,310 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-27 19:50:15,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-27 19:50:15,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:15,511 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:15,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:15,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1237912148, now seen corresponding path program 1 times [2024-11-27 19:50:15,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:15,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687155063] [2024-11-27 19:50:15,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:15,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:15,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:15,628 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2024-11-27 19:50:15,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:15,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687155063] [2024-11-27 19:50:15,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687155063] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:15,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394623357] [2024-11-27 19:50:15,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:15,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:15,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:15,631 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:15,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 19:50:15,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:15,851 INFO L256 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 19:50:15,853 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:15,861 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-27 19:50:15,864 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:50:15,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394623357] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:15,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:50:15,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2024-11-27 19:50:15,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965440088] [2024-11-27 19:50:15,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:15,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:50:15,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:15,866 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:50:15,866 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:15,866 INFO L87 Difference]: Start difference. First operand 135 states and 184 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-27 19:50:15,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:15,887 INFO L93 Difference]: Finished difference Result 250 states and 346 transitions. [2024-11-27 19:50:15,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:50:15,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 120 [2024-11-27 19:50:15,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:15,891 INFO L225 Difference]: With dead ends: 250 [2024-11-27 19:50:15,891 INFO L226 Difference]: Without dead ends: 136 [2024-11-27 19:50:15,892 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:15,892 INFO L435 NwaCegarLoop]: 177 mSDtfsCounter, 0 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:15,895 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 350 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:50:15,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-27 19:50:15,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2024-11-27 19:50:15,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 87 states have (on average 1.2413793103448276) internal successors, (108), 89 states have internal predecessors, (108), 37 states have call successors, (37), 10 states have call predecessors, (37), 11 states have return successors, (40), 36 states have call predecessors, (40), 36 states have call successors, (40) [2024-11-27 19:50:15,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 185 transitions. [2024-11-27 19:50:15,918 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 185 transitions. Word has length 120 [2024-11-27 19:50:15,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:15,919 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 185 transitions. [2024-11-27 19:50:15,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-27 19:50:15,919 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 185 transitions. [2024-11-27 19:50:15,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-27 19:50:15,921 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:15,922 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:15,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 19:50:16,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:16,123 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:16,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:16,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1007667306, now seen corresponding path program 1 times [2024-11-27 19:50:16,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:16,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914576012] [2024-11-27 19:50:16,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:16,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:16,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:16,508 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2024-11-27 19:50:16,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:16,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914576012] [2024-11-27 19:50:16,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914576012] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:16,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918885507] [2024-11-27 19:50:16,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:16,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:16,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:16,511 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:16,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 19:50:16,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:16,758 INFO L256 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-27 19:50:16,762 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:16,896 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-27 19:50:16,896 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:50:16,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918885507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:16,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:50:16,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 15 [2024-11-27 19:50:16,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997608881] [2024-11-27 19:50:16,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:16,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 19:50:16,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:16,898 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 19:50:16,898 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2024-11-27 19:50:16,898 INFO L87 Difference]: Start difference. First operand 136 states and 185 transitions. Second operand has 9 states, 8 states have (on average 7.875) internal successors, (63), 9 states have internal predecessors, (63), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-27 19:50:17,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:17,296 INFO L93 Difference]: Finished difference Result 256 states and 350 transitions. [2024-11-27 19:50:17,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 19:50:17,297 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.875) internal successors, (63), 9 states have internal predecessors, (63), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 5 states have call successors, (15) Word has length 120 [2024-11-27 19:50:17,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:17,301 INFO L225 Difference]: With dead ends: 256 [2024-11-27 19:50:17,304 INFO L226 Difference]: Without dead ends: 138 [2024-11-27 19:50:17,305 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2024-11-27 19:50:17,306 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 204 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:17,306 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 900 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 19:50:17,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-27 19:50:17,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2024-11-27 19:50:17,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 87 states have (on average 1.2298850574712643) internal successors, (107), 89 states have internal predecessors, (107), 37 states have call successors, (37), 10 states have call predecessors, (37), 11 states have return successors, (40), 36 states have call predecessors, (40), 36 states have call successors, (40) [2024-11-27 19:50:17,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 184 transitions. [2024-11-27 19:50:17,328 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 184 transitions. Word has length 120 [2024-11-27 19:50:17,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:17,328 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 184 transitions. [2024-11-27 19:50:17,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.875) internal successors, (63), 9 states have internal predecessors, (63), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-27 19:50:17,332 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 184 transitions. [2024-11-27 19:50:17,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-27 19:50:17,334 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:17,334 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:17,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-27 19:50:17,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:17,535 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:17,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:17,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1735356124, now seen corresponding path program 1 times [2024-11-27 19:50:17,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:17,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755752397] [2024-11-27 19:50:17,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:17,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:17,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:17,980 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2024-11-27 19:50:17,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:17,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755752397] [2024-11-27 19:50:17,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755752397] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:17,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453849853] [2024-11-27 19:50:17,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:17,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:17,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:17,983 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:17,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 19:50:18,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:18,264 INFO L256 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-27 19:50:18,268 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:18,439 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-27 19:50:18,439 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:50:18,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453849853] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:18,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:50:18,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 17 [2024-11-27 19:50:18,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944817789] [2024-11-27 19:50:18,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:18,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 19:50:18,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:18,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 19:50:18,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2024-11-27 19:50:18,441 INFO L87 Difference]: Start difference. First operand 136 states and 184 transitions. Second operand has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 10 states have internal predecessors, (65), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-27 19:50:18,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:18,953 INFO L93 Difference]: Finished difference Result 262 states and 358 transitions. [2024-11-27 19:50:18,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 19:50:18,953 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 10 states have internal predecessors, (65), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 5 states have call successors, (15) Word has length 122 [2024-11-27 19:50:18,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:18,955 INFO L225 Difference]: With dead ends: 262 [2024-11-27 19:50:18,955 INFO L226 Difference]: Without dead ends: 143 [2024-11-27 19:50:18,956 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=525, Unknown=0, NotChecked=0, Total=600 [2024-11-27 19:50:18,957 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 218 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:18,957 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 1013 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 19:50:18,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-27 19:50:18,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 137. [2024-11-27 19:50:18,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 88 states have (on average 1.2272727272727273) internal successors, (108), 90 states have internal predecessors, (108), 37 states have call successors, (37), 10 states have call predecessors, (37), 11 states have return successors, (40), 36 states have call predecessors, (40), 36 states have call successors, (40) [2024-11-27 19:50:18,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 185 transitions. [2024-11-27 19:50:18,970 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 185 transitions. Word has length 122 [2024-11-27 19:50:18,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:18,971 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 185 transitions. [2024-11-27 19:50:18,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 10 states have internal predecessors, (65), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-27 19:50:18,971 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 185 transitions. [2024-11-27 19:50:18,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-27 19:50:18,973 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:18,973 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:18,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-27 19:50:19,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:19,177 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:19,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:19,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1938292629, now seen corresponding path program 1 times [2024-11-27 19:50:19,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:19,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117427851] [2024-11-27 19:50:19,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:19,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:19,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:19,622 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2024-11-27 19:50:19,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:19,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117427851] [2024-11-27 19:50:19,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117427851] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:19,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495726295] [2024-11-27 19:50:19,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:19,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:19,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:19,626 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:19,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 19:50:19,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:19,884 INFO L256 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 19:50:19,887 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:19,914 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2024-11-27 19:50:19,914 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:50:19,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495726295] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:19,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:50:19,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2024-11-27 19:50:19,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285707700] [2024-11-27 19:50:19,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:19,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:50:19,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:19,915 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:50:19,916 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-27 19:50:19,916 INFO L87 Difference]: Start difference. First operand 137 states and 185 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-27 19:50:19,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:19,942 INFO L93 Difference]: Finished difference Result 257 states and 353 transitions. [2024-11-27 19:50:19,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:50:19,943 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 123 [2024-11-27 19:50:19,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:19,945 INFO L225 Difference]: With dead ends: 257 [2024-11-27 19:50:19,945 INFO L226 Difference]: Without dead ends: 141 [2024-11-27 19:50:19,946 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-27 19:50:19,947 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 2 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:19,947 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 343 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:50:19,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-27 19:50:19,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 138. [2024-11-27 19:50:19,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 89 states have (on average 1.2247191011235956) internal successors, (109), 91 states have internal predecessors, (109), 37 states have call successors, (37), 10 states have call predecessors, (37), 11 states have return successors, (40), 36 states have call predecessors, (40), 36 states have call successors, (40) [2024-11-27 19:50:19,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 186 transitions. [2024-11-27 19:50:19,989 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 186 transitions. Word has length 123 [2024-11-27 19:50:19,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:19,989 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 186 transitions. [2024-11-27 19:50:19,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-27 19:50:19,991 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 186 transitions. [2024-11-27 19:50:19,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-27 19:50:19,992 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:19,992 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:20,003 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-27 19:50:20,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-27 19:50:20,193 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:20,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:20,194 INFO L85 PathProgramCache]: Analyzing trace with hash 173108503, now seen corresponding path program 1 times [2024-11-27 19:50:20,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:20,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516930660] [2024-11-27 19:50:20,196 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:20,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:20,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:20,691 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2024-11-27 19:50:20,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:20,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516930660] [2024-11-27 19:50:20,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516930660] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:20,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512315033] [2024-11-27 19:50:20,692 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:20,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:20,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:20,695 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:20,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 19:50:20,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:20,975 INFO L256 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-27 19:50:20,979 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:21,246 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-27 19:50:21,247 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:50:21,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512315033] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:21,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:50:21,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 15 [2024-11-27 19:50:21,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908069151] [2024-11-27 19:50:21,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:21,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-27 19:50:21,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:21,250 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-27 19:50:21,250 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2024-11-27 19:50:21,251 INFO L87 Difference]: Start difference. First operand 138 states and 186 transitions. Second operand has 13 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 6 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-27 19:50:21,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:21,915 INFO L93 Difference]: Finished difference Result 255 states and 345 transitions. [2024-11-27 19:50:21,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-27 19:50:21,916 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 6 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 131 [2024-11-27 19:50:21,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:21,918 INFO L225 Difference]: With dead ends: 255 [2024-11-27 19:50:21,918 INFO L226 Difference]: Without dead ends: 141 [2024-11-27 19:50:21,919 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2024-11-27 19:50:21,919 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 175 mSDsluCounter, 1310 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:21,919 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 1448 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 19:50:21,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-27 19:50:21,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 139. [2024-11-27 19:50:21,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 90 states have (on average 1.2222222222222223) internal successors, (110), 92 states have internal predecessors, (110), 37 states have call successors, (37), 10 states have call predecessors, (37), 11 states have return successors, (40), 36 states have call predecessors, (40), 36 states have call successors, (40) [2024-11-27 19:50:21,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 187 transitions. [2024-11-27 19:50:21,932 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 187 transitions. Word has length 131 [2024-11-27 19:50:21,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:21,932 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 187 transitions. [2024-11-27 19:50:21,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 6 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-27 19:50:21,933 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 187 transitions. [2024-11-27 19:50:21,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-27 19:50:21,934 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:21,934 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:21,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-27 19:50:22,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:22,135 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:22,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:22,136 INFO L85 PathProgramCache]: Analyzing trace with hash -881169819, now seen corresponding path program 1 times [2024-11-27 19:50:22,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:22,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881009677] [2024-11-27 19:50:22,136 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:22,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:22,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:23,269 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-11-27 19:50:23,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:23,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881009677] [2024-11-27 19:50:23,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881009677] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:23,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349430077] [2024-11-27 19:50:23,271 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:23,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:23,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:23,273 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:23,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 19:50:23,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:23,578 INFO L256 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-27 19:50:23,583 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:23,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-27 19:50:23,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-27 19:50:28,100 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((|v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_1| Int) (|v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_1| Int)) (not (= 0 (select (select |c_#memory_$Pointer$#2.offset| |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_1|) |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_1|)))) (exists ((|v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_1| Int) (|v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_1| Int)) (not (= (select (select |c_#memory_$Pointer$#2.base| |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_1|) |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_1|) 0)))) is different from true [2024-11-27 19:50:28,286 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 112 proven. 1 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-27 19:50:28,286 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:50:28,647 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2024-11-27 19:50:28,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349430077] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:50:28,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:50:28,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 8] total 29 [2024-11-27 19:50:28,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035374516] [2024-11-27 19:50:28,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:50:28,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-27 19:50:28,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:28,649 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-27 19:50:28,649 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=677, Unknown=1, NotChecked=52, Total=812 [2024-11-27 19:50:28,650 INFO L87 Difference]: Start difference. First operand 139 states and 187 transitions. Second operand has 29 states, 27 states have (on average 4.7407407407407405) internal successors, (128), 28 states have internal predecessors, (128), 11 states have call successors, (34), 3 states have call predecessors, (34), 5 states have return successors, (34), 9 states have call predecessors, (34), 11 states have call successors, (34) [2024-11-27 19:50:30,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:30,894 INFO L93 Difference]: Finished difference Result 371 states and 551 transitions. [2024-11-27 19:50:30,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-27 19:50:30,895 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 4.7407407407407405) internal successors, (128), 28 states have internal predecessors, (128), 11 states have call successors, (34), 3 states have call predecessors, (34), 5 states have return successors, (34), 9 states have call predecessors, (34), 11 states have call successors, (34) Word has length 133 [2024-11-27 19:50:30,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:30,900 INFO L225 Difference]: With dead ends: 371 [2024-11-27 19:50:30,900 INFO L226 Difference]: Without dead ends: 253 [2024-11-27 19:50:30,902 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 255 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=236, Invalid=2023, Unknown=1, NotChecked=92, Total=2352 [2024-11-27 19:50:30,904 INFO L435 NwaCegarLoop]: 181 mSDtfsCounter, 191 mSDsluCounter, 2635 mSDsCounter, 0 mSdLazyCounter, 1549 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 2816 SdHoareTripleChecker+Invalid, 2335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 1549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 585 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:30,905 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 2816 Invalid, 2335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 1549 Invalid, 0 Unknown, 585 Unchecked, 1.5s Time] [2024-11-27 19:50:30,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2024-11-27 19:50:30,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 196. [2024-11-27 19:50:30,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 135 states have (on average 1.2592592592592593) internal successors, (170), 138 states have internal predecessors, (170), 46 states have call successors, (46), 12 states have call predecessors, (46), 14 states have return successors, (60), 45 states have call predecessors, (60), 45 states have call successors, (60) [2024-11-27 19:50:30,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 276 transitions. [2024-11-27 19:50:30,937 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 276 transitions. Word has length 133 [2024-11-27 19:50:30,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:30,938 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 276 transitions. [2024-11-27 19:50:30,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 4.7407407407407405) internal successors, (128), 28 states have internal predecessors, (128), 11 states have call successors, (34), 3 states have call predecessors, (34), 5 states have return successors, (34), 9 states have call predecessors, (34), 11 states have call successors, (34) [2024-11-27 19:50:30,938 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 276 transitions. [2024-11-27 19:50:30,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-27 19:50:30,940 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:30,940 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-27 19:50:30,951 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-27 19:50:31,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-27 19:50:31,144 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:31,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:31,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1320644585, now seen corresponding path program 1 times [2024-11-27 19:50:31,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:31,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979394228] [2024-11-27 19:50:31,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:31,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:31,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:31,278 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-27 19:50:31,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:31,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979394228] [2024-11-27 19:50:31,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979394228] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:31,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683356210] [2024-11-27 19:50:31,279 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:31,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:31,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:31,281 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:31,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 19:50:31,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:31,564 INFO L256 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 19:50:31,567 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:31,577 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-27 19:50:31,577 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:50:31,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683356210] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:31,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:50:31,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-27 19:50:31,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802116753] [2024-11-27 19:50:31,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:31,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:50:31,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:31,578 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:50:31,578 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:50:31,578 INFO L87 Difference]: Start difference. First operand 196 states and 276 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 19:50:31,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:31,622 INFO L93 Difference]: Finished difference Result 374 states and 546 transitions. [2024-11-27 19:50:31,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 19:50:31,622 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 133 [2024-11-27 19:50:31,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:31,625 INFO L225 Difference]: With dead ends: 374 [2024-11-27 19:50:31,625 INFO L226 Difference]: Without dead ends: 199 [2024-11-27 19:50:31,627 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:50:31,628 INFO L435 NwaCegarLoop]: 177 mSDtfsCounter, 0 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:31,628 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 519 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:50:31,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2024-11-27 19:50:31,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 198. [2024-11-27 19:50:31,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 137 states have (on average 1.2408759124087592) internal successors, (170), 140 states have internal predecessors, (170), 46 states have call successors, (46), 12 states have call predecessors, (46), 14 states have return successors, (60), 45 states have call predecessors, (60), 45 states have call successors, (60) [2024-11-27 19:50:31,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 276 transitions. [2024-11-27 19:50:31,657 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 276 transitions. Word has length 133 [2024-11-27 19:50:31,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:31,657 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 276 transitions. [2024-11-27 19:50:31,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 19:50:31,658 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 276 transitions. [2024-11-27 19:50:31,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-27 19:50:31,661 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:31,662 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:31,673 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-27 19:50:31,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:31,863 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:31,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:31,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1908409965, now seen corresponding path program 1 times [2024-11-27 19:50:31,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:31,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112626512] [2024-11-27 19:50:31,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:31,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:31,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:32,027 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-11-27 19:50:32,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:32,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112626512] [2024-11-27 19:50:32,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112626512] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:32,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645905070] [2024-11-27 19:50:32,028 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:32,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:32,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:32,030 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:32,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-27 19:50:32,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:32,329 INFO L256 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 19:50:32,333 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:32,341 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-27 19:50:32,342 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:50:32,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645905070] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:32,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:50:32,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-27 19:50:32,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170223341] [2024-11-27 19:50:32,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:32,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:50:32,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:32,343 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:50:32,343 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:50:32,344 INFO L87 Difference]: Start difference. First operand 198 states and 276 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 19:50:32,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:32,377 INFO L93 Difference]: Finished difference Result 352 states and 499 transitions. [2024-11-27 19:50:32,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 19:50:32,377 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 133 [2024-11-27 19:50:32,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:32,379 INFO L225 Difference]: With dead ends: 352 [2024-11-27 19:50:32,379 INFO L226 Difference]: Without dead ends: 175 [2024-11-27 19:50:32,380 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:50:32,382 INFO L435 NwaCegarLoop]: 176 mSDtfsCounter, 0 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:32,382 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 519 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:50:32,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-11-27 19:50:32,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 169. [2024-11-27 19:50:32,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 115 states have (on average 1.2173913043478262) internal successors, (140), 117 states have internal predecessors, (140), 40 states have call successors, (40), 12 states have call predecessors, (40), 13 states have return successors, (47), 39 states have call predecessors, (47), 39 states have call successors, (47) [2024-11-27 19:50:32,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 227 transitions. [2024-11-27 19:50:32,403 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 227 transitions. Word has length 133 [2024-11-27 19:50:32,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:32,405 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 227 transitions. [2024-11-27 19:50:32,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 19:50:32,405 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 227 transitions. [2024-11-27 19:50:32,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-27 19:50:32,406 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:32,407 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-27 19:50:32,417 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-27 19:50:32,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:32,611 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:32,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:32,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1646702988, now seen corresponding path program 1 times [2024-11-27 19:50:32,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:32,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046306205] [2024-11-27 19:50:32,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:32,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:32,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:32,996 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2024-11-27 19:50:32,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:32,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046306205] [2024-11-27 19:50:32,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046306205] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:32,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982799570] [2024-11-27 19:50:32,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:32,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:32,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:32,999 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:33,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-27 19:50:33,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:33,321 INFO L256 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 138 conjuncts are in the unsatisfiable core [2024-11-27 19:50:33,327 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:33,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-27 19:50:33,697 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-27 19:50:33,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 19:50:33,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-27 19:50:33,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 19:50:33,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-27 19:50:33,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 19:50:33,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 19:50:33,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 27 [2024-11-27 19:50:33,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 19:50:33,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 19:50:33,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2024-11-27 19:50:33,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 1 [2024-11-27 19:50:33,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 15 [2024-11-27 19:50:36,569 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 118 proven. 23 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-27 19:50:36,569 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:50:40,954 INFO L349 Elim1Store]: treesize reduction 63, result has 62.0 percent of original size [2024-11-27 19:50:40,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 2333 treesize of output 2258 [2024-11-27 19:50:41,086 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:50:41,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 2229 treesize of output 1851 [2024-11-27 19:50:43,993 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-11-27 19:50:44,057 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-11-27 19:50:44,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 104 [2024-11-27 19:50:44,518 INFO L349 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2024-11-27 19:50:44,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 129 treesize of output 105 [2024-11-27 19:50:44,687 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:50:44,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 82 [2024-11-27 19:50:44,726 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:50:44,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 8 [2024-11-27 19:50:44,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 19:50:44,887 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:50:44,890 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-11-27 19:50:44,931 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:50:44,934 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-11-27 19:50:44,961 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:50:44,966 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-11-27 19:50:45,034 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 19:50:45,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 93 treesize of output 95 [2024-11-27 19:50:45,884 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 19:50:45,884 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 544 treesize of output 369 [2024-11-27 19:50:45,936 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 19:50:45,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1472 treesize of output 1422 [2024-11-27 19:50:46,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 511 treesize of output 509 [2024-11-27 19:50:46,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 509 treesize of output 505 [2024-11-27 19:50:46,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 505 treesize of output 503 [2024-11-27 19:50:46,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 533 treesize of output 525 [2024-11-27 19:50:46,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 525 treesize of output 521 [2024-11-27 19:50:46,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 521 treesize of output 519 [2024-11-27 19:50:46,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 519 treesize of output 517 [2024-11-27 19:50:46,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 547 treesize of output 541 [2024-11-27 19:50:46,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 541 treesize of output 537 [2024-11-27 19:50:46,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 537 treesize of output 535 [2024-11-27 19:50:46,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 535 treesize of output 533 [2024-11-27 19:50:46,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-27 19:50:46,695 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 19:50:46,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 101 treesize of output 99 [2024-11-27 19:50:47,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2024-11-27 19:50:47,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2024-11-27 19:50:47,083 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 19:50:47,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 123 treesize of output 119 [2024-11-27 19:50:48,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982799570] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:48,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 19:50:48,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 21] total 26 [2024-11-27 19:50:48,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214522348] [2024-11-27 19:50:48,272 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 19:50:48,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-27 19:50:48,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:48,273 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-27 19:50:48,274 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1665, Unknown=0, NotChecked=0, Total=1806 [2024-11-27 19:50:48,274 INFO L87 Difference]: Start difference. First operand 169 states and 227 transitions. Second operand has 26 states, 24 states have (on average 5.458333333333333) internal successors, (131), 24 states have internal predecessors, (131), 10 states have call successors, (33), 4 states have call predecessors, (33), 9 states have return successors, (32), 9 states have call predecessors, (32), 10 states have call successors, (32) [2024-11-27 19:50:53,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:53,225 INFO L93 Difference]: Finished difference Result 394 states and 520 transitions. [2024-11-27 19:50:53,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-27 19:50:53,226 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 5.458333333333333) internal successors, (131), 24 states have internal predecessors, (131), 10 states have call successors, (33), 4 states have call predecessors, (33), 9 states have return successors, (32), 9 states have call predecessors, (32), 10 states have call successors, (32) Word has length 134 [2024-11-27 19:50:53,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:53,228 INFO L225 Difference]: With dead ends: 394 [2024-11-27 19:50:53,229 INFO L226 Difference]: Without dead ends: 234 [2024-11-27 19:50:53,230 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 213 SyntacticMatches, 15 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 958 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=373, Invalid=4183, Unknown=0, NotChecked=0, Total=4556 [2024-11-27 19:50:53,231 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 249 mSDsluCounter, 1722 mSDsCounter, 0 mSdLazyCounter, 1665 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 1858 SdHoareTripleChecker+Invalid, 1788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:53,231 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 1858 Invalid, 1788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1665 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-27 19:50:53,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2024-11-27 19:50:53,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 210. [2024-11-27 19:50:53,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 151 states have (on average 1.2516556291390728) internal successors, (189), 153 states have internal predecessors, (189), 40 states have call successors, (40), 17 states have call predecessors, (40), 18 states have return successors, (44), 39 states have call predecessors, (44), 39 states have call successors, (44) [2024-11-27 19:50:53,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 273 transitions. [2024-11-27 19:50:53,275 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 273 transitions. Word has length 134 [2024-11-27 19:50:53,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:53,275 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 273 transitions. [2024-11-27 19:50:53,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 5.458333333333333) internal successors, (131), 24 states have internal predecessors, (131), 10 states have call successors, (33), 4 states have call predecessors, (33), 9 states have return successors, (32), 9 states have call predecessors, (32), 10 states have call successors, (32) [2024-11-27 19:50:53,276 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 273 transitions. [2024-11-27 19:50:53,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-27 19:50:53,277 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:53,278 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:53,289 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-27 19:50:53,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:53,478 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:53,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:53,479 INFO L85 PathProgramCache]: Analyzing trace with hash 548732783, now seen corresponding path program 1 times [2024-11-27 19:50:53,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:53,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530575909] [2024-11-27 19:50:53,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:53,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:53,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:54,063 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2024-11-27 19:50:54,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:54,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530575909] [2024-11-27 19:50:54,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530575909] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:54,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921775568] [2024-11-27 19:50:54,064 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:54,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:54,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:54,066 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:54,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-27 19:50:54,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:54,418 INFO L256 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 100 conjuncts are in the unsatisfiable core [2024-11-27 19:50:54,424 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:54,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-27 19:50:54,775 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-27 19:50:54,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 19:50:54,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-27 19:50:54,793 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-27 19:50:54,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 19:50:54,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-27 19:50:54,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 19:50:54,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-27 19:50:54,904 INFO L349 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2024-11-27 19:50:54,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 51 [2024-11-27 19:50:54,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 19:50:54,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 19:50:54,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 23 [2024-11-27 19:50:54,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 18 [2024-11-27 19:50:57,572 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-27 19:50:57,575 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 125 proven. 27 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-27 19:50:57,575 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:50:58,193 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1228 (Array Int Int)) (v_ArrVal_1226 Int) (v_ArrVal_1227 Int)) (or (< v_ArrVal_1227 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) (< 0 (let ((.cse2 (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 24))) (select (let ((.cse0 (let ((.cse1 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_1227)))) (store .cse1 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse1 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse2 v_ArrVal_1226))))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.offset|))) (select (select (let ((.cse3 (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_1228))) (store .cse3 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse3 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse2 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset|))) |c_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.offset|)))))) is different from false [2024-11-27 19:50:58,216 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 19:50:58,216 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 100 [2024-11-27 19:50:58,470 INFO L349 Elim1Store]: treesize reduction 85, result has 67.2 percent of original size [2024-11-27 19:50:58,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 1943 treesize of output 1857 [2024-11-27 19:50:58,553 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 19:50:58,554 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 1652 treesize of output 1436 [2024-11-27 19:50:58,649 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 19:50:58,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 5050 treesize of output 4876 [2024-11-27 19:50:58,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1778 treesize of output 1746 [2024-11-27 19:50:58,966 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 19:50:58,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 4616 treesize of output 4517 [2024-11-27 19:50:59,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2024-11-27 19:51:24,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 19:51:24,559 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 19:51:24,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 2915 treesize of output 2895 [2024-11-27 20:00:46,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101 [2024-11-27 20:00:46,229 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-27 20:00:46,230 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-11-27 20:00:46,237 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-27 20:00:46,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-27 20:00:46,431 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.assertTerm(Scriptor.java:147) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.assertTerm(DiffWrapperScript.java:111) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.assertTerm(WrapperScript.java:158) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:584) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:245) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:318) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:728) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.pushInner(QuantifierPusher.java:274) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:194) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:234) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:395) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:267) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:325) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:181) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:428) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:314) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:275) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 75 more [2024-11-27 20:00:46,439 INFO L158 Benchmark]: Toolchain (without parser) took 681093.17ms. Allocated memory was 142.6MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 112.9MB in the beginning and 1.0GB in the end (delta: -917.4MB). Peak memory consumption was 861.6MB. Max. memory is 16.1GB. [2024-11-27 20:00:46,440 INFO L158 Benchmark]: CDTParser took 0.52ms. Allocated memory is still 142.6MB. Free memory is still 78.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:00:46,440 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2515.90ms. Allocated memory is still 142.6MB. Free memory was 112.7MB in the beginning and 87.1MB in the end (delta: 25.6MB). Peak memory consumption was 72.2MB. Max. memory is 16.1GB. [2024-11-27 20:00:46,440 INFO L158 Benchmark]: Boogie Procedure Inliner took 128.80ms. Allocated memory is still 142.6MB. Free memory was 87.1MB in the beginning and 81.4MB in the end (delta: 5.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 20:00:46,440 INFO L158 Benchmark]: Boogie Preprocessor took 118.56ms. Allocated memory is still 142.6MB. Free memory was 81.4MB in the beginning and 75.1MB in the end (delta: 6.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 20:00:46,440 INFO L158 Benchmark]: RCFGBuilder took 1061.48ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 75.1MB in the beginning and 376.8MB in the end (delta: -301.7MB). Peak memory consumption was 39.3MB. Max. memory is 16.1GB. [2024-11-27 20:00:46,441 INFO L158 Benchmark]: TraceAbstraction took 677257.37ms. Allocated memory was 427.8MB in the beginning and 1.4GB in the end (delta: 931.1MB). Free memory was 375.8MB in the beginning and 1.0GB in the end (delta: -654.5MB). Peak memory consumption was 837.4MB. Max. memory is 16.1GB. [2024-11-27 20:00:46,446 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52ms. Allocated memory is still 142.6MB. Free memory is still 78.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2515.90ms. Allocated memory is still 142.6MB. Free memory was 112.7MB in the beginning and 87.1MB in the end (delta: 25.6MB). Peak memory consumption was 72.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 128.80ms. Allocated memory is still 142.6MB. Free memory was 87.1MB in the beginning and 81.4MB in the end (delta: 5.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 118.56ms. Allocated memory is still 142.6MB. Free memory was 81.4MB in the beginning and 75.1MB in the end (delta: 6.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 1061.48ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 75.1MB in the beginning and 376.8MB in the end (delta: -301.7MB). Peak memory consumption was 39.3MB. Max. memory is 16.1GB. * TraceAbstraction took 677257.37ms. Allocated memory was 427.8MB in the beginning and 1.4GB in the end (delta: 931.1MB). Free memory was 375.8MB in the beginning and 1.0GB in the end (delta: -654.5MB). Peak memory consumption was 837.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4c102a8320469121bebf24ca3406288a96f198533855b78a0cc2eda1e300f8b5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:00:48,880 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:00:48,979 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-27 20:00:48,985 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:00:48,986 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:00:49,054 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:00:49,055 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:00:49,055 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:00:49,056 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:00:49,056 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:00:49,056 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:00:49,056 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:00:49,056 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:00:49,057 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:00:49,057 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:00:49,057 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:00:49,057 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:00:49,057 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:00:49,057 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:00:49,057 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:00:49,057 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:00:49,063 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-27 20:00:49,064 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-27 20:00:49,064 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-27 20:00:49,064 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:00:49,064 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:00:49,064 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:00:49,064 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:00:49,064 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:00:49,064 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:00:49,065 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:00:49,065 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:00:49,065 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:00:49,065 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:00:49,065 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:00:49,065 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:00:49,065 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:00:49,065 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:00:49,065 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:00:49,066 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:00:49,066 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:00:49,066 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-27 20:00:49,066 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-27 20:00:49,066 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:00:49,066 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:00:49,066 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:00:49,066 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:00:49,066 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_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c102a8320469121bebf24ca3406288a96f198533855b78a0cc2eda1e300f8b5 [2024-11-27 20:00:49,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:00:49,401 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:00:49,404 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:00:49,405 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:00:49,405 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:00:49,407 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i [2024-11-27 20:00:52,540 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/data/d9da03658/88ff8152b53a436fa4de676369a011fb/FLAG7bc88a13d [2024-11-27 20:00:53,271 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:00:53,272 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i [2024-11-27 20:00:53,329 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/data/d9da03658/88ff8152b53a436fa4de676369a011fb/FLAG7bc88a13d [2024-11-27 20:00:53,353 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/data/d9da03658/88ff8152b53a436fa4de676369a011fb [2024-11-27 20:00:53,356 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:00:53,358 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:00:53,360 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:00:53,361 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:00:53,367 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:00:53,368 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:00:53" (1/1) ... [2024-11-27 20:00:53,372 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ddce0af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:00:53, skipping insertion in model container [2024-11-27 20:00:53,372 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:00:53" (1/1) ... [2024-11-27 20:00:53,478 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:00:53,828 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_25073f22-44cb-4869-b445-e13c54c414cf/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i[4498,4511] [2024-11-27 20:00:53,839 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_25073f22-44cb-4869-b445-e13c54c414cf/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i[4558,4571] [2024-11-27 20:00:54,927 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:00:55,155 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:00:55,156 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:00:55,157 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:00:55,176 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:00:55,179 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:00:55,180 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:00:55,181 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:00:55,182 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:00:55,183 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:00:55,184 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:00:55,188 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:00:55,188 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:00:55,191 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:00:55,192 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:00:55,203 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:00:55,203 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:00:55,204 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:00:55,204 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:00:55,206 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:00:55,207 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:00:55,207 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:00:55,208 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:00:55,210 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:00:55,211 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:00:55,211 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:00:55,212 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:00:55,212 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:00:55,213 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:00:55,751 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:00:55,752 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:00:55,753 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:00:55,753 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:00:55,983 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:00:56,015 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_25073f22-44cb-4869-b445-e13c54c414cf/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i[150656,150669] [2024-11-27 20:00:56,016 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:00:56,046 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-27 20:00:56,088 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:00:56,097 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_25073f22-44cb-4869-b445-e13c54c414cf/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i[4498,4511] [2024-11-27 20:00:56,097 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_25073f22-44cb-4869-b445-e13c54c414cf/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i[4558,4571] [2024-11-27 20:00:56,142 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:00:56,177 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:00:56,177 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:00:56,178 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:00:56,190 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:00:56,191 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:00:56,192 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:00:56,192 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:00:56,193 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:00:56,197 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:00:56,197 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:00:56,202 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:00:56,203 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:00:56,205 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:00:56,205 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:00:56,212 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:00:56,213 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:00:56,213 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:00:56,213 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:00:56,215 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:00:56,215 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:00:56,215 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:00:56,216 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:00:56,220 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:00:56,221 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:00:56,222 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:00:56,222 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:00:56,222 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:00:56,223 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:00:56,326 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:00:56,329 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:00:56,329 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:00:56,330 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:00:56,382 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:00:56,396 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_25073f22-44cb-4869-b445-e13c54c414cf/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i[150656,150669] [2024-11-27 20:00:56,397 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:00:56,407 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:00:56,424 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_25073f22-44cb-4869-b445-e13c54c414cf/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i[4498,4511] [2024-11-27 20:00:56,424 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_25073f22-44cb-4869-b445-e13c54c414cf/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i[4558,4571] [2024-11-27 20:00:56,469 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:00:56,469 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:00:56,470 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:00:56,470 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:00:56,471 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:00:56,486 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:00:56,486 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:00:56,487 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:00:56,488 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:00:56,489 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:00:56,491 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:00:56,491 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:00:56,492 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:00:56,659 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_25073f22-44cb-4869-b445-e13c54c414cf/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i[150656,150669] [2024-11-27 20:00:56,660 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:00:56,877 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:00:56,878 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:00:56 WrapperNode [2024-11-27 20:00:56,878 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:00:56,879 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:00:56,880 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:00:56,880 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:00:56,891 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:00:56" (1/1) ... [2024-11-27 20:00:56,966 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:00:56" (1/1) ... [2024-11-27 20:00:57,005 INFO L138 Inliner]: procedures = 687, calls = 1044, calls flagged for inlining = 53, calls inlined = 8, statements flattened = 224 [2024-11-27 20:00:57,005 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:00:57,006 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:00:57,006 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:00:57,006 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:00:57,018 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:00:56" (1/1) ... [2024-11-27 20:00:57,018 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:00:56" (1/1) ... [2024-11-27 20:00:57,030 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:00:56" (1/1) ... [2024-11-27 20:00:57,079 INFO L175 MemorySlicer]: Split 43 memory accesses to 3 slices as follows [2, 5, 36]. 84 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 9 writes are split as follows [0, 0, 9]. [2024-11-27 20:00:57,079 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:00:56" (1/1) ... [2024-11-27 20:00:57,080 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:00:56" (1/1) ... [2024-11-27 20:00:57,121 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:00:56" (1/1) ... [2024-11-27 20:00:57,123 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:00:56" (1/1) ... [2024-11-27 20:00:57,131 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:00:56" (1/1) ... [2024-11-27 20:00:57,147 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:00:56" (1/1) ... [2024-11-27 20:00:57,153 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:00:56" (1/1) ... [2024-11-27 20:00:57,168 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:00:57,169 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:00:57,169 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:00:57,171 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:00:57,172 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:00:56" (1/1) ... [2024-11-27 20:00:57,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:00:57,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:00:57,222 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:00:57,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:00:57,262 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2024-11-27 20:00:57,262 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2024-11-27 20:00:57,262 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_remove [2024-11-27 20:00:57,263 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_remove [2024-11-27 20:00:57,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-27 20:00:57,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-27 20:00:57,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-27 20:00:57,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-27 20:00:57,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-27 20:00:57,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-27 20:00:57,265 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2024-11-27 20:00:57,265 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2024-11-27 20:00:57,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-27 20:00:57,266 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2024-11-27 20:00:57,267 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2024-11-27 20:00:57,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:00:57,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-27 20:00:57,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-27 20:00:57,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-27 20:00:57,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:00:57,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:00:57,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-27 20:00:57,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-27 20:00:57,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-11-27 20:00:57,269 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_empty [2024-11-27 20:00:57,269 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_empty [2024-11-27 20:00:57,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-27 20:00:57,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-27 20:00:57,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-27 20:00:57,269 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-27 20:00:57,270 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-27 20:00:57,270 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-27 20:00:57,270 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-27 20:00:57,270 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-27 20:00:57,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-27 20:00:57,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-27 20:00:57,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-27 20:00:57,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-27 20:00:57,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-27 20:00:57,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-27 20:00:57,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-27 20:00:57,271 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-27 20:00:57,271 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-27 20:00:57,271 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2024-11-27 20:00:57,271 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2024-11-27 20:00:57,712 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:00:57,714 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:00:58,596 INFO L? ?]: Removed 105 outVars from TransFormulas that were not future-live. [2024-11-27 20:00:58,596 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:00:58,611 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:00:58,613 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-27 20:00:58,614 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:00:58 BoogieIcfgContainer [2024-11-27 20:00:58,615 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:00:58,618 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:00:58,618 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:00:58,627 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:00:58,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:00:53" (1/3) ... [2024-11-27 20:00:58,628 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70bb8c34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:00:58, skipping insertion in model container [2024-11-27 20:00:58,628 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:00:56" (2/3) ... [2024-11-27 20:00:58,628 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70bb8c34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:00:58, skipping insertion in model container [2024-11-27 20:00:58,628 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:00:58" (3/3) ... [2024-11-27 20:00:58,630 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_linked_list_pop_back_harness.i [2024-11-27 20:00:58,646 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:00:58,648 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_linked_list_pop_back_harness.i that has 13 procedures, 145 locations, 1 initial locations, 7 loop locations, and 1 error locations. [2024-11-27 20:00:58,709 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:00:58,720 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;@3713ced8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:00:58,721 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 20:00:58,725 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 89 states have (on average 1.303370786516854) internal successors, (116), 90 states have internal predecessors, (116), 37 states have call successors, (37), 10 states have call predecessors, (37), 10 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-11-27 20:00:58,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-27 20:00:58,736 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:00:58,737 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:00:58,737 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:00:58,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:00:58,743 INFO L85 PathProgramCache]: Analyzing trace with hash -629864822, now seen corresponding path program 1 times [2024-11-27 20:00:58,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:00:58,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [53671900] [2024-11-27 20:00:58,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:00:58,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:00:58,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:00:58,757 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:00:58,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:00:59,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:00:59,103 INFO L256 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-27 20:00:59,110 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:00:59,137 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2024-11-27 20:00:59,137 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:00:59,137 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:00:59,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53671900] [2024-11-27 20:00:59,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53671900] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:00:59,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:00:59,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:00:59,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765464570] [2024-11-27 20:00:59,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:00:59,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 20:00:59,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:00:59,164 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 20:00:59,164 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:00:59,168 INFO L87 Difference]: Start difference. First operand has 137 states, 89 states have (on average 1.303370786516854) internal successors, (116), 90 states have internal predecessors, (116), 37 states have call successors, (37), 10 states have call predecessors, (37), 10 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-27 20:00:59,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:00:59,229 INFO L93 Difference]: Finished difference Result 266 states and 401 transitions. [2024-11-27 20:00:59,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 20:00:59,231 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 116 [2024-11-27 20:00:59,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:00:59,243 INFO L225 Difference]: With dead ends: 266 [2024-11-27 20:00:59,243 INFO L226 Difference]: Without dead ends: 132 [2024-11-27 20:00:59,249 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:00:59,254 INFO L435 NwaCegarLoop]: 183 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, 183 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:00:59,254 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:00:59,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-27 20:00:59,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2024-11-27 20:00:59,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 84 states have (on average 1.25) internal successors, (105), 85 states have internal predecessors, (105), 37 states have call successors, (37), 10 states have call predecessors, (37), 10 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-27 20:00:59,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 178 transitions. [2024-11-27 20:00:59,341 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 178 transitions. Word has length 116 [2024-11-27 20:00:59,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:00:59,342 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 178 transitions. [2024-11-27 20:00:59,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-27 20:00:59,343 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 178 transitions. [2024-11-27 20:00:59,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-27 20:00:59,349 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:00:59,349 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:00:59,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-27 20:00:59,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:00:59,550 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:00:59,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:00:59,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1855713404, now seen corresponding path program 1 times [2024-11-27 20:00:59,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:00:59,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1102465681] [2024-11-27 20:00:59,552 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:00:59,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:00:59,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:00:59,558 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:00:59,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:00:59,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:00:59,832 INFO L256 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 20:00:59,836 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:00:59,937 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-27 20:00:59,938 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:00:59,938 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:00:59,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102465681] [2024-11-27 20:00:59,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102465681] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:00:59,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:00:59,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:00:59,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735046010] [2024-11-27 20:00:59,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:00:59,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:00:59,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:00:59,941 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:00:59,941 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:00:59,942 INFO L87 Difference]: Start difference. First operand 132 states and 178 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-27 20:01:00,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:01:00,124 INFO L93 Difference]: Finished difference Result 246 states and 335 transitions. [2024-11-27 20:01:00,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:01:00,128 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 116 [2024-11-27 20:01:00,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:01:00,132 INFO L225 Difference]: With dead ends: 246 [2024-11-27 20:01:00,132 INFO L226 Difference]: Without dead ends: 134 [2024-11-27 20:01:00,133 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:01:00,134 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 0 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:01:00,134 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 807 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:01:00,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-27 20:01:00,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2024-11-27 20:01:00,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 85 states have (on average 1.2470588235294118) internal successors, (106), 87 states have internal predecessors, (106), 37 states have call successors, (37), 10 states have call predecessors, (37), 11 states have return successors, (40), 36 states have call predecessors, (40), 36 states have call successors, (40) [2024-11-27 20:01:00,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 183 transitions. [2024-11-27 20:01:00,152 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 183 transitions. Word has length 116 [2024-11-27 20:01:00,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:01:00,153 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 183 transitions. [2024-11-27 20:01:00,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-27 20:01:00,153 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 183 transitions. [2024-11-27 20:01:00,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-27 20:01:00,155 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:01:00,155 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-27 20:01:00,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 20:01:00,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:01:00,358 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:01:00,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:01:00,359 INFO L85 PathProgramCache]: Analyzing trace with hash -2124008296, now seen corresponding path program 1 times [2024-11-27 20:01:00,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:01:00,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1788568082] [2024-11-27 20:01:00,360 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:01:00,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:01:00,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:01:00,366 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:01:00,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:01:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:01:00,686 INFO L256 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 20:01:00,694 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:01:00,721 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-27 20:01:00,724 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:01:00,725 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:01:00,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788568082] [2024-11-27 20:01:00,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788568082] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:01:00,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:01:00,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:01:00,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824956807] [2024-11-27 20:01:00,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:01:00,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:01:00,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:01:00,727 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:01:00,727 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:01:00,727 INFO L87 Difference]: Start difference. First operand 134 states and 183 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-27 20:01:00,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:01:00,779 INFO L93 Difference]: Finished difference Result 249 states and 346 transitions. [2024-11-27 20:01:00,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:01:00,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 118 [2024-11-27 20:01:00,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:01:00,785 INFO L225 Difference]: With dead ends: 249 [2024-11-27 20:01:00,786 INFO L226 Difference]: Without dead ends: 135 [2024-11-27 20:01:00,787 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:01:00,788 INFO L435 NwaCegarLoop]: 177 mSDtfsCounter, 0 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:01:00,788 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 350 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:01:00,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-27 20:01:00,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2024-11-27 20:01:00,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 86 states have (on average 1.244186046511628) internal successors, (107), 88 states have internal predecessors, (107), 37 states have call successors, (37), 10 states have call predecessors, (37), 11 states have return successors, (40), 36 states have call predecessors, (40), 36 states have call successors, (40) [2024-11-27 20:01:00,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 184 transitions. [2024-11-27 20:01:00,806 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 184 transitions. Word has length 118 [2024-11-27 20:01:00,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:01:00,806 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 184 transitions. [2024-11-27 20:01:00,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-27 20:01:00,807 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 184 transitions. [2024-11-27 20:01:00,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-27 20:01:00,809 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:01:00,809 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:01:00,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-27 20:01:01,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:01:01,010 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:01:01,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:01:01,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1491686746, now seen corresponding path program 1 times [2024-11-27 20:01:01,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:01:01,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1913665522] [2024-11-27 20:01:01,012 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:01:01,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:01:01,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:01:01,014 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:01:01,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 20:01:01,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:01:01,274 INFO L256 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 20:01:01,279 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:01:01,451 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-27 20:01:01,451 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:01:01,451 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:01:01,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913665522] [2024-11-27 20:01:01,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913665522] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:01:01,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:01:01,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 20:01:01,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432335538] [2024-11-27 20:01:01,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:01:01,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:01:01,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:01:01,453 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:01:01,453 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:01:01,454 INFO L87 Difference]: Start difference. First operand 135 states and 184 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-27 20:01:01,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:01:01,853 INFO L93 Difference]: Finished difference Result 255 states and 350 transitions. [2024-11-27 20:01:01,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 20:01:01,854 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 118 [2024-11-27 20:01:01,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:01:01,857 INFO L225 Difference]: With dead ends: 255 [2024-11-27 20:01:01,857 INFO L226 Difference]: Without dead ends: 140 [2024-11-27 20:01:01,858 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:01:01,859 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 46 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:01:01,859 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 873 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 20:01:01,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-27 20:01:01,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 138. [2024-11-27 20:01:01,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 88 states have (on average 1.2386363636363635) internal successors, (109), 91 states have internal predecessors, (109), 37 states have call successors, (37), 10 states have call predecessors, (37), 12 states have return successors, (42), 36 states have call predecessors, (42), 36 states have call successors, (42) [2024-11-27 20:01:01,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 188 transitions. [2024-11-27 20:01:01,885 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 188 transitions. Word has length 118 [2024-11-27 20:01:01,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:01:01,885 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 188 transitions. [2024-11-27 20:01:01,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-27 20:01:01,886 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 188 transitions. [2024-11-27 20:01:01,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-27 20:01:01,888 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:01:01,888 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:01:01,902 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 20:01:02,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:01:02,089 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:01:02,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:01:02,090 INFO L85 PathProgramCache]: Analyzing trace with hash 87828456, now seen corresponding path program 1 times [2024-11-27 20:01:02,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:01:02,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1951365329] [2024-11-27 20:01:02,091 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:01:02,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:01:02,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:01:02,095 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:01:02,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 20:01:02,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:01:02,385 INFO L256 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 20:01:02,391 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:01:02,595 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-27 20:01:02,595 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:01:02,595 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:01:02,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951365329] [2024-11-27 20:01:02,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951365329] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:01:02,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:01:02,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 20:01:02,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019343580] [2024-11-27 20:01:02,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:01:02,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:01:02,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:01:02,597 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:01:02,597 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:01:02,597 INFO L87 Difference]: Start difference. First operand 138 states and 188 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-27 20:01:03,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:01:03,140 INFO L93 Difference]: Finished difference Result 267 states and 368 transitions. [2024-11-27 20:01:03,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:01:03,141 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 120 [2024-11-27 20:01:03,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:01:03,143 INFO L225 Difference]: With dead ends: 267 [2024-11-27 20:01:03,143 INFO L226 Difference]: Without dead ends: 149 [2024-11-27 20:01:03,144 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:01:03,145 INFO L435 NwaCegarLoop]: 162 mSDtfsCounter, 55 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:01:03,146 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 1017 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 20:01:03,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-11-27 20:01:03,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 140. [2024-11-27 20:01:03,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 90 states have (on average 1.2444444444444445) internal successors, (112), 93 states have internal predecessors, (112), 37 states have call successors, (37), 10 states have call predecessors, (37), 12 states have return successors, (42), 36 states have call predecessors, (42), 36 states have call successors, (42) [2024-11-27 20:01:03,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 191 transitions. [2024-11-27 20:01:03,176 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 191 transitions. Word has length 120 [2024-11-27 20:01:03,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:01:03,176 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 191 transitions. [2024-11-27 20:01:03,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-27 20:01:03,177 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 191 transitions. [2024-11-27 20:01:03,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-27 20:01:03,182 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:01:03,183 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:01:03,198 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-27 20:01:03,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:01:03,383 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:01:03,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:01:03,384 INFO L85 PathProgramCache]: Analyzing trace with hash 441052957, now seen corresponding path program 1 times [2024-11-27 20:01:03,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:01:03,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1362962718] [2024-11-27 20:01:03,384 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:01:03,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:01:03,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:01:03,386 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:01:03,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 20:01:03,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:01:03,636 INFO L256 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 20:01:03,640 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:01:03,668 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-27 20:01:03,668 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:01:03,669 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:01:03,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362962718] [2024-11-27 20:01:03,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362962718] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:01:03,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:01:03,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:01:03,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971458648] [2024-11-27 20:01:03,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:01:03,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:01:03,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:01:03,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:01:03,671 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:01:03,671 INFO L87 Difference]: Start difference. First operand 140 states and 191 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-27 20:01:03,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:01:03,734 INFO L93 Difference]: Finished difference Result 264 states and 367 transitions. [2024-11-27 20:01:03,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:01:03,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 121 [2024-11-27 20:01:03,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:01:03,739 INFO L225 Difference]: With dead ends: 264 [2024-11-27 20:01:03,742 INFO L226 Difference]: Without dead ends: 144 [2024-11-27 20:01:03,743 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:01:03,744 INFO L435 NwaCegarLoop]: 175 mSDtfsCounter, 2 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:01:03,744 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 344 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:01:03,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-27 20:01:03,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 141. [2024-11-27 20:01:03,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 91 states have (on average 1.2417582417582418) internal successors, (113), 94 states have internal predecessors, (113), 37 states have call successors, (37), 10 states have call predecessors, (37), 12 states have return successors, (42), 36 states have call predecessors, (42), 36 states have call successors, (42) [2024-11-27 20:01:03,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 192 transitions. [2024-11-27 20:01:03,775 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 192 transitions. Word has length 121 [2024-11-27 20:01:03,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:01:03,775 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 192 transitions. [2024-11-27 20:01:03,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-27 20:01:03,776 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 192 transitions. [2024-11-27 20:01:03,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-27 20:01:03,778 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:01:03,778 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:01:03,793 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-27 20:01:03,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:01:03,979 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:01:03,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:01:03,980 INFO L85 PathProgramCache]: Analyzing trace with hash -778355169, now seen corresponding path program 1 times [2024-11-27 20:01:03,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:01:03,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [125304143] [2024-11-27 20:01:03,980 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:01:03,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:01:03,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:01:03,982 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:01:03,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 20:01:04,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:01:04,278 INFO L256 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 20:01:04,284 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:01:04,348 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-27 20:01:04,348 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:01:04,349 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:01:04,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125304143] [2024-11-27 20:01:04,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125304143] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:01:04,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:01:04,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:01:04,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88280707] [2024-11-27 20:01:04,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:01:04,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:01:04,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:01:04,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:01:04,352 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:01:04,353 INFO L87 Difference]: Start difference. First operand 141 states and 192 transitions. Second operand has 6 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-27 20:01:04,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:01:04,514 INFO L93 Difference]: Finished difference Result 259 states and 350 transitions. [2024-11-27 20:01:04,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:01:04,515 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2024-11-27 20:01:04,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:01:04,520 INFO L225 Difference]: With dead ends: 259 [2024-11-27 20:01:04,520 INFO L226 Difference]: Without dead ends: 141 [2024-11-27 20:01:04,521 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:01:04,522 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 0 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:01:04,522 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 807 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:01:04,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-27 20:01:04,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2024-11-27 20:01:04,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 91 states have (on average 1.2417582417582418) internal successors, (113), 94 states have internal predecessors, (113), 37 states have call successors, (37), 10 states have call predecessors, (37), 12 states have return successors, (41), 36 states have call predecessors, (41), 36 states have call successors, (41) [2024-11-27 20:01:04,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 191 transitions. [2024-11-27 20:01:04,541 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 191 transitions. Word has length 129 [2024-11-27 20:01:04,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:01:04,542 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 191 transitions. [2024-11-27 20:01:04,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-27 20:01:04,542 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 191 transitions. [2024-11-27 20:01:04,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-27 20:01:04,544 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:01:04,544 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-27 20:01:04,558 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-27 20:01:04,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:01:04,745 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:01:04,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:01:04,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1845034947, now seen corresponding path program 1 times [2024-11-27 20:01:04,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:01:04,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [845521754] [2024-11-27 20:01:04,746 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:01:04,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:01:04,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:01:04,748 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:01:04,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 20:01:05,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:01:05,024 INFO L256 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-27 20:01:05,029 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:01:05,228 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-27 20:01:05,228 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:01:05,228 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:01:05,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845521754] [2024-11-27 20:01:05,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845521754] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:01:05,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:01:05,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 20:01:05,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664785976] [2024-11-27 20:01:05,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:01:05,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:01:05,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:01:05,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:01:05,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:01:05,231 INFO L87 Difference]: Start difference. First operand 141 states and 191 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 5 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-27 20:01:05,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:01:05,655 INFO L93 Difference]: Finished difference Result 264 states and 355 transitions. [2024-11-27 20:01:05,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 20:01:05,656 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 5 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) Word has length 131 [2024-11-27 20:01:05,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:01:05,658 INFO L225 Difference]: With dead ends: 264 [2024-11-27 20:01:05,658 INFO L226 Difference]: Without dead ends: 143 [2024-11-27 20:01:05,659 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:01:05,660 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 51 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 1023 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:01:05,660 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 1023 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 20:01:05,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-27 20:01:05,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 141. [2024-11-27 20:01:05,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 91 states have (on average 1.2307692307692308) internal successors, (112), 94 states have internal predecessors, (112), 37 states have call successors, (37), 10 states have call predecessors, (37), 12 states have return successors, (41), 36 states have call predecessors, (41), 36 states have call successors, (41) [2024-11-27 20:01:05,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 190 transitions. [2024-11-27 20:01:05,680 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 190 transitions. Word has length 131 [2024-11-27 20:01:05,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:01:05,680 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 190 transitions. [2024-11-27 20:01:05,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 5 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-27 20:01:05,681 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 190 transitions. [2024-11-27 20:01:05,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-27 20:01:05,682 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:01:05,683 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:01:05,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-27 20:01:05,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:01:05,884 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:01:05,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:01:05,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1008192523, now seen corresponding path program 1 times [2024-11-27 20:01:05,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:01:05,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1869638569] [2024-11-27 20:01:05,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:01:05,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:01:05,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:01:05,889 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:01:05,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 20:01:06,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:01:06,157 INFO L256 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-27 20:01:06,162 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:01:06,378 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-27 20:01:06,378 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:01:06,378 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:01:06,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869638569] [2024-11-27 20:01:06,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869638569] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:01:06,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:01:06,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 20:01:06,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306901607] [2024-11-27 20:01:06,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:01:06,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 20:01:06,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:01:06,380 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 20:01:06,380 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:01:06,380 INFO L87 Difference]: Start difference. First operand 141 states and 190 transitions. Second operand has 9 states, 8 states have (on average 9.25) internal successors, (74), 9 states have internal predecessors, (74), 5 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-27 20:01:06,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:01:06,851 INFO L93 Difference]: Finished difference Result 264 states and 354 transitions. [2024-11-27 20:01:06,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:01:06,852 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.25) internal successors, (74), 9 states have internal predecessors, (74), 5 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) Word has length 133 [2024-11-27 20:01:06,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:01:06,855 INFO L225 Difference]: With dead ends: 264 [2024-11-27 20:01:06,857 INFO L226 Difference]: Without dead ends: 142 [2024-11-27 20:01:06,858 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:01:06,859 INFO L435 NwaCegarLoop]: 161 mSDtfsCounter, 60 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:01:06,859 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1158 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 20:01:06,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-27 20:01:06,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 137. [2024-11-27 20:01:06,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 88 states have (on average 1.2272727272727273) internal successors, (108), 90 states have internal predecessors, (108), 37 states have call successors, (37), 10 states have call predecessors, (37), 11 states have return successors, (39), 36 states have call predecessors, (39), 36 states have call successors, (39) [2024-11-27 20:01:06,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 184 transitions. [2024-11-27 20:01:06,881 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 184 transitions. Word has length 133 [2024-11-27 20:01:06,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:01:06,882 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 184 transitions. [2024-11-27 20:01:06,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.25) internal successors, (74), 9 states have internal predecessors, (74), 5 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-27 20:01:06,883 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 184 transitions. [2024-11-27 20:01:06,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-27 20:01:06,884 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:01:06,885 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:01:06,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-27 20:01:07,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:01:07,089 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:01:07,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:01:07,090 INFO L85 PathProgramCache]: Analyzing trace with hash -2138012144, now seen corresponding path program 2 times [2024-11-27 20:01:07,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:01:07,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1317714817] [2024-11-27 20:01:07,090 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:01:07,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:01:07,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:01:07,093 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:01:07,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 20:01:07,414 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:01:07,414 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:01:07,422 INFO L256 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:01:07,426 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:01:07,509 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-27 20:01:07,512 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:01:07,513 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:01:07,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317714817] [2024-11-27 20:01:07,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317714817] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:01:07,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:01:07,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 20:01:07,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517251342] [2024-11-27 20:01:07,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:01:07,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:01:07,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:01:07,515 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:01:07,515 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:01:07,515 INFO L87 Difference]: Start difference. First operand 137 states and 184 transitions. Second operand has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-27 20:01:07,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:01:07,712 INFO L93 Difference]: Finished difference Result 257 states and 348 transitions. [2024-11-27 20:01:07,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 20:01:07,713 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 142 [2024-11-27 20:01:07,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:01:07,718 INFO L225 Difference]: With dead ends: 257 [2024-11-27 20:01:07,718 INFO L226 Difference]: Without dead ends: 140 [2024-11-27 20:01:07,720 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:01:07,721 INFO L435 NwaCegarLoop]: 165 mSDtfsCounter, 0 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:01:07,722 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 960 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 20:01:07,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-27 20:01:07,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2024-11-27 20:01:07,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 90 states have (on average 1.2222222222222223) internal successors, (110), 93 states have internal predecessors, (110), 37 states have call successors, (37), 10 states have call predecessors, (37), 12 states have return successors, (43), 36 states have call predecessors, (43), 36 states have call successors, (43) [2024-11-27 20:01:07,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 190 transitions. [2024-11-27 20:01:07,745 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 190 transitions. Word has length 142 [2024-11-27 20:01:07,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:01:07,745 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 190 transitions. [2024-11-27 20:01:07,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-27 20:01:07,746 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 190 transitions. [2024-11-27 20:01:07,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-27 20:01:07,748 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:01:07,748 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:01:07,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-27 20:01:07,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:01:07,953 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:01:07,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:01:07,954 INFO L85 PathProgramCache]: Analyzing trace with hash 437673858, now seen corresponding path program 1 times [2024-11-27 20:01:07,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:01:07,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1289223059] [2024-11-27 20:01:07,955 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:01:07,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:01:07,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:01:07,957 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:01:07,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-27 20:01:08,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:01:08,262 INFO L256 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:01:08,265 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:01:08,343 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-27 20:01:08,345 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:01:08,346 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:01:08,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289223059] [2024-11-27 20:01:08,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289223059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:01:08,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:01:08,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 20:01:08,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278626871] [2024-11-27 20:01:08,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:01:08,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:01:08,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:01:08,348 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:01:08,348 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:01:08,348 INFO L87 Difference]: Start difference. First operand 140 states and 190 transitions. Second operand has 7 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-27 20:01:08,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:01:08,524 INFO L93 Difference]: Finished difference Result 257 states and 347 transitions. [2024-11-27 20:01:08,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 20:01:08,524 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 144 [2024-11-27 20:01:08,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:01:08,526 INFO L225 Difference]: With dead ends: 257 [2024-11-27 20:01:08,527 INFO L226 Difference]: Without dead ends: 140 [2024-11-27 20:01:08,527 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:01:08,528 INFO L435 NwaCegarLoop]: 165 mSDtfsCounter, 0 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:01:08,529 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 960 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:01:08,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-27 20:01:08,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 138. [2024-11-27 20:01:08,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 89 states have (on average 1.2247191011235956) internal successors, (109), 91 states have internal predecessors, (109), 37 states have call successors, (37), 10 states have call predecessors, (37), 11 states have return successors, (39), 36 states have call predecessors, (39), 36 states have call successors, (39) [2024-11-27 20:01:08,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 185 transitions. [2024-11-27 20:01:08,542 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 185 transitions. Word has length 144 [2024-11-27 20:01:08,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:01:08,543 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 185 transitions. [2024-11-27 20:01:08,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-27 20:01:08,543 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 185 transitions. [2024-11-27 20:01:08,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-27 20:01:08,545 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:01:08,545 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:01:08,559 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-27 20:01:08,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:01:08,746 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:01:08,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:01:08,747 INFO L85 PathProgramCache]: Analyzing trace with hash -36934128, now seen corresponding path program 1 times [2024-11-27 20:01:08,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:01:08,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [684674024] [2024-11-27 20:01:08,748 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:01:08,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:01:08,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:01:08,750 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:01:08,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-27 20:01:09,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:01:09,071 INFO L256 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-27 20:01:09,077 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:01:09,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-27 20:01:13,860 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1| (_ BitVec 64)) (|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1| (_ BitVec 64))) (not (= (select (select |c_#memory_$Pointer$#2.base| |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1|) |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1|) (_ bv0 64)))) (exists ((|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1| (_ BitVec 64)) (|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1| (_ BitVec 64))) (not (= (_ bv0 64) (select (select |c_#memory_$Pointer$#2.offset| |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1|) |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1|))))) is different from true [2024-11-27 20:01:14,233 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 123 proven. 1 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-11-27 20:01:14,233 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:01:14,923 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2024-11-27 20:01:14,924 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:01:14,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684674024] [2024-11-27 20:01:14,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684674024] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:01:14,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:01:14,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 17 [2024-11-27 20:01:14,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740392124] [2024-11-27 20:01:14,925 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 20:01:14,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-27 20:01:14,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:01:14,926 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-27 20:01:14,926 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=199, Unknown=1, NotChecked=28, Total=272 [2024-11-27 20:01:14,927 INFO L87 Difference]: Start difference. First operand 138 states and 185 transitions. Second operand has 17 states, 17 states have (on average 6.882352941176471) internal successors, (117), 17 states have internal predecessors, (117), 5 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2024-11-27 20:01:17,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:01:17,268 INFO L93 Difference]: Finished difference Result 301 states and 418 transitions. [2024-11-27 20:01:17,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-27 20:01:17,269 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.882352941176471) internal successors, (117), 17 states have internal predecessors, (117), 5 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) Word has length 146 [2024-11-27 20:01:17,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:01:17,272 INFO L225 Difference]: With dead ends: 301 [2024-11-27 20:01:17,272 INFO L226 Difference]: Without dead ends: 183 [2024-11-27 20:01:17,273 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 278 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=76, Invalid=347, Unknown=1, NotChecked=38, Total=462 [2024-11-27 20:01:17,274 INFO L435 NwaCegarLoop]: 169 mSDtfsCounter, 70 mSDsluCounter, 1470 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 1639 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 366 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:01:17,274 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 1639 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 464 Invalid, 0 Unknown, 366 Unchecked, 2.0s Time] [2024-11-27 20:01:17,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-27 20:01:17,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 156. [2024-11-27 20:01:17,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 105 states have (on average 1.2476190476190476) internal successors, (131), 107 states have internal predecessors, (131), 38 states have call successors, (38), 11 states have call predecessors, (38), 12 states have return successors, (41), 37 states have call predecessors, (41), 37 states have call successors, (41) [2024-11-27 20:01:17,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 210 transitions. [2024-11-27 20:01:17,294 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 210 transitions. Word has length 146 [2024-11-27 20:01:17,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:01:17,295 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 210 transitions. [2024-11-27 20:01:17,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.882352941176471) internal successors, (117), 17 states have internal predecessors, (117), 5 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2024-11-27 20:01:17,295 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 210 transitions. [2024-11-27 20:01:17,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-27 20:01:17,297 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:01:17,297 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:01:17,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-27 20:01:17,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:01:17,502 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:01:17,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:01:17,503 INFO L85 PathProgramCache]: Analyzing trace with hash 305665616, now seen corresponding path program 1 times [2024-11-27 20:01:17,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:01:17,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1104000023] [2024-11-27 20:01:17,503 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:01:17,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:01:17,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:01:17,508 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:01:17,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-27 20:01:17,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:01:17,796 INFO L256 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 20:01:17,799 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:01:17,824 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-27 20:01:17,824 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:01:17,824 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:01:17,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104000023] [2024-11-27 20:01:17,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104000023] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:01:17,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:01:17,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:01:17,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383170961] [2024-11-27 20:01:17,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:01:17,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:01:17,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:01:17,827 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:01:17,827 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:01:17,827 INFO L87 Difference]: Start difference. First operand 156 states and 210 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 20:01:17,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:01:17,877 INFO L93 Difference]: Finished difference Result 293 states and 402 transitions. [2024-11-27 20:01:17,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:01:17,878 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 146 [2024-11-27 20:01:17,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:01:17,880 INFO L225 Difference]: With dead ends: 293 [2024-11-27 20:01:17,880 INFO L226 Difference]: Without dead ends: 157 [2024-11-27 20:01:17,881 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:01:17,882 INFO L435 NwaCegarLoop]: 177 mSDtfsCounter, 0 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:01:17,882 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 519 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:01:17,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-27 20:01:17,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2024-11-27 20:01:17,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 105 states have (on average 1.2380952380952381) internal successors, (130), 107 states have internal predecessors, (130), 38 states have call successors, (38), 11 states have call predecessors, (38), 12 states have return successors, (41), 37 states have call predecessors, (41), 37 states have call successors, (41) [2024-11-27 20:01:17,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 209 transitions. [2024-11-27 20:01:17,906 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 209 transitions. Word has length 146 [2024-11-27 20:01:17,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:01:17,907 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 209 transitions. [2024-11-27 20:01:17,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 20:01:17,907 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 209 transitions. [2024-11-27 20:01:17,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-27 20:01:17,911 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:01:17,911 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:01:17,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-27 20:01:18,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:01:18,112 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:01:18,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:01:18,113 INFO L85 PathProgramCache]: Analyzing trace with hash 837865104, now seen corresponding path program 1 times [2024-11-27 20:01:18,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:01:18,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [374767528] [2024-11-27 20:01:18,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:01:18,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:01:18,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:01:18,115 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:01:18,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-27 20:01:18,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:01:18,432 INFO L256 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 20:01:18,436 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:01:18,460 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-27 20:01:18,461 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:01:18,461 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:01:18,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374767528] [2024-11-27 20:01:18,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374767528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:01:18,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:01:18,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:01:18,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253612227] [2024-11-27 20:01:18,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:01:18,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:01:18,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:01:18,463 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:01:18,463 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:01:18,463 INFO L87 Difference]: Start difference. First operand 156 states and 209 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 20:01:18,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:01:18,508 INFO L93 Difference]: Finished difference Result 290 states and 397 transitions. [2024-11-27 20:01:18,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:01:18,509 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 146 [2024-11-27 20:01:18,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:01:18,511 INFO L225 Difference]: With dead ends: 290 [2024-11-27 20:01:18,511 INFO L226 Difference]: Without dead ends: 154 [2024-11-27 20:01:18,512 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:01:18,513 INFO L435 NwaCegarLoop]: 176 mSDtfsCounter, 0 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:01:18,514 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 519 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:01:18,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-11-27 20:01:18,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 152. [2024-11-27 20:01:18,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 101 states have (on average 1.2277227722772277) internal successors, (124), 103 states have internal predecessors, (124), 38 states have call successors, (38), 11 states have call predecessors, (38), 12 states have return successors, (41), 37 states have call predecessors, (41), 37 states have call successors, (41) [2024-11-27 20:01:18,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 203 transitions. [2024-11-27 20:01:18,528 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 203 transitions. Word has length 146 [2024-11-27 20:01:18,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:01:18,529 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 203 transitions. [2024-11-27 20:01:18,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 20:01:18,529 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 203 transitions. [2024-11-27 20:01:18,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-27 20:01:18,531 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:01:18,531 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:01:18,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-27 20:01:18,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:01:18,735 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:01:18,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:01:18,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1108579596, now seen corresponding path program 1 times [2024-11-27 20:01:18,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:01:18,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2032934471] [2024-11-27 20:01:18,736 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:01:18,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:01:18,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:01:18,738 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:01:18,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-27 20:01:18,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:01:19,001 INFO L256 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-27 20:01:19,007 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:01:19,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2024-11-27 20:01:19,171 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 8 treesize of output 1 [2024-11-27 20:01:21,912 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-11-27 20:01:21,912 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:01:21,912 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:01:21,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032934471] [2024-11-27 20:01:21,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032934471] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:01:21,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:01:21,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-27 20:01:21,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5344143] [2024-11-27 20:01:21,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:01:21,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-27 20:01:21,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:01:21,914 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-27 20:01:21,914 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-27 20:01:21,915 INFO L87 Difference]: Start difference. First operand 152 states and 203 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 6 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-27 20:01:24,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:01:24,974 INFO L93 Difference]: Finished difference Result 379 states and 501 transitions. [2024-11-27 20:01:24,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 20:01:24,975 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 6 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) Word has length 148 [2024-11-27 20:01:24,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:01:24,977 INFO L225 Difference]: With dead ends: 379 [2024-11-27 20:01:24,978 INFO L226 Difference]: Without dead ends: 258 [2024-11-27 20:01:24,979 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 117 SyntacticMatches, 20 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2024-11-27 20:01:24,979 INFO L435 NwaCegarLoop]: 144 mSDtfsCounter, 79 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:01:24,979 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 822 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-27 20:01:24,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-27 20:01:25,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 252. [2024-11-27 20:01:25,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 169 states have (on average 1.2307692307692308) internal successors, (208), 173 states have internal predecessors, (208), 62 states have call successors, (62), 19 states have call predecessors, (62), 20 states have return successors, (67), 59 states have call predecessors, (67), 61 states have call successors, (67) [2024-11-27 20:01:25,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 337 transitions. [2024-11-27 20:01:25,006 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 337 transitions. Word has length 148 [2024-11-27 20:01:25,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:01:25,007 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 337 transitions. [2024-11-27 20:01:25,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 6 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-27 20:01:25,007 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 337 transitions. [2024-11-27 20:01:25,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-27 20:01:25,009 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:01:25,010 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:01:25,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-27 20:01:25,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:01:25,210 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:01:25,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:01:25,211 INFO L85 PathProgramCache]: Analyzing trace with hash -299232970, now seen corresponding path program 1 times [2024-11-27 20:01:25,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:01:25,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [815975255] [2024-11-27 20:01:25,211 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:01:25,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:01:25,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:01:25,213 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:01:25,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-27 20:01:25,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:01:25,477 INFO L256 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-27 20:01:25,483 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:01:25,537 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 13 treesize of output 1 [2024-11-27 20:01:25,542 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 13 treesize of output 1 [2024-11-27 20:01:28,269 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 117 proven. 25 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-27 20:01:28,270 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:01:29,683 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 10 proven. 33 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2024-11-27 20:01:29,683 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:01:29,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815975255] [2024-11-27 20:01:29,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815975255] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:01:29,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:01:29,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10] total 22 [2024-11-27 20:01:29,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848555470] [2024-11-27 20:01:29,684 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 20:01:29,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-27 20:01:29,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:01:29,686 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-27 20:01:29,686 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2024-11-27 20:01:29,686 INFO L87 Difference]: Start difference. First operand 252 states and 337 transitions. Second operand has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 20 states have internal predecessors, (138), 11 states have call successors, (33), 4 states have call predecessors, (33), 6 states have return successors, (32), 11 states have call predecessors, (32), 10 states have call successors, (32) [2024-11-27 20:01:34,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:01:38,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:01:42,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:01:46,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:01:55,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:01:59,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:02:04,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:02:05,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:02:05,816 INFO L93 Difference]: Finished difference Result 565 states and 730 transitions. [2024-11-27 20:02:05,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-27 20:02:05,817 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 20 states have internal predecessors, (138), 11 states have call successors, (33), 4 states have call predecessors, (33), 6 states have return successors, (32), 11 states have call predecessors, (32), 10 states have call successors, (32) Word has length 148 [2024-11-27 20:02:05,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:02:05,820 INFO L225 Difference]: With dead ends: 565 [2024-11-27 20:02:05,821 INFO L226 Difference]: Without dead ends: 395 [2024-11-27 20:02:05,822 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 269 SyntacticMatches, 11 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=211, Invalid=1049, Unknown=0, NotChecked=0, Total=1260 [2024-11-27 20:02:05,822 INFO L435 NwaCegarLoop]: 176 mSDtfsCounter, 155 mSDsluCounter, 1495 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 69 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 1671 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:02:05,822 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 1671 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 953 Invalid, 7 Unknown, 0 Unchecked, 34.6s Time] [2024-11-27 20:02:05,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2024-11-27 20:02:05,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 386. [2024-11-27 20:02:05,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 277 states have (on average 1.2310469314079422) internal successors, (341), 284 states have internal predecessors, (341), 73 states have call successors, (73), 31 states have call predecessors, (73), 35 states have return successors, (84), 70 states have call predecessors, (84), 71 states have call successors, (84) [2024-11-27 20:02:05,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 498 transitions. [2024-11-27 20:02:05,884 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 498 transitions. Word has length 148 [2024-11-27 20:02:05,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:02:05,885 INFO L471 AbstractCegarLoop]: Abstraction has 386 states and 498 transitions. [2024-11-27 20:02:05,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 20 states have internal predecessors, (138), 11 states have call successors, (33), 4 states have call predecessors, (33), 6 states have return successors, (32), 11 states have call predecessors, (32), 10 states have call successors, (32) [2024-11-27 20:02:05,886 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 498 transitions. [2024-11-27 20:02:05,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-27 20:02:05,888 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:02:05,888 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:02:05,902 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-27 20:02:06,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:02:06,089 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:02:06,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:02:06,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1501606606, now seen corresponding path program 1 times [2024-11-27 20:02:06,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:02:06,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [38443116] [2024-11-27 20:02:06,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:02:06,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:02:06,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:02:06,094 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:02:06,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-27 20:02:06,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:02:06,363 INFO L256 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-27 20:02:06,368 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:02:06,491 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 13 treesize of output 1 [2024-11-27 20:02:10,688 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 114 proven. 28 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-27 20:02:10,688 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:02:15,221 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-11-27 20:02:15,221 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 30 treesize of output 25 [2024-11-27 20:02:15,587 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 10 proven. 33 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2024-11-27 20:02:15,588 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:02:15,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38443116] [2024-11-27 20:02:15,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38443116] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:02:15,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:02:15,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12] total 26 [2024-11-27 20:02:15,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409880771] [2024-11-27 20:02:15,588 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 20:02:15,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-27 20:02:15,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:02:15,591 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-27 20:02:15,592 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2024-11-27 20:02:15,592 INFO L87 Difference]: Start difference. First operand 386 states and 498 transitions. Second operand has 26 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 24 states have internal predecessors, (135), 11 states have call successors, (33), 4 states have call predecessors, (33), 6 states have return successors, (32), 11 states have call predecessors, (32), 10 states have call successors, (32) [2024-11-27 20:02:19,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:02:23,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:02:28,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:02:37,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:02:41,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:02:44,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:02:44,321 INFO L93 Difference]: Finished difference Result 708 states and 905 transitions. [2024-11-27 20:02:44,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-27 20:02:44,322 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 24 states have internal predecessors, (135), 11 states have call successors, (33), 4 states have call predecessors, (33), 6 states have return successors, (32), 11 states have call predecessors, (32), 10 states have call successors, (32) Word has length 148 [2024-11-27 20:02:44,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:02:44,325 INFO L225 Difference]: With dead ends: 708 [2024-11-27 20:02:44,325 INFO L226 Difference]: Without dead ends: 475 [2024-11-27 20:02:44,327 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 267 SyntacticMatches, 11 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=342, Invalid=1820, Unknown=0, NotChecked=0, Total=2162 [2024-11-27 20:02:44,327 INFO L435 NwaCegarLoop]: 170 mSDtfsCounter, 256 mSDsluCounter, 1592 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 119 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 1762 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:02:44,328 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 1762 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1006 Invalid, 5 Unknown, 0 Unchecked, 26.1s Time] [2024-11-27 20:02:44,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2024-11-27 20:02:44,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 447. [2024-11-27 20:02:44,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 325 states have (on average 1.236923076923077) internal successors, (402), 334 states have internal predecessors, (402), 80 states have call successors, (80), 35 states have call predecessors, (80), 41 states have return successors, (94), 77 states have call predecessors, (94), 77 states have call successors, (94) [2024-11-27 20:02:44,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 576 transitions. [2024-11-27 20:02:44,397 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 576 transitions. Word has length 148 [2024-11-27 20:02:44,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:02:44,398 INFO L471 AbstractCegarLoop]: Abstraction has 447 states and 576 transitions. [2024-11-27 20:02:44,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 24 states have internal predecessors, (135), 11 states have call successors, (33), 4 states have call predecessors, (33), 6 states have return successors, (32), 11 states have call predecessors, (32), 10 states have call successors, (32) [2024-11-27 20:02:44,398 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 576 transitions. [2024-11-27 20:02:44,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-27 20:02:44,400 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:02:44,401 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:02:44,414 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-27 20:02:44,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:02:44,601 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:02:44,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:02:44,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1243441168, now seen corresponding path program 1 times [2024-11-27 20:02:44,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:02:44,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [976584731] [2024-11-27 20:02:44,603 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:02:44,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:02:44,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:02:44,605 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:02:44,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-27 20:02:44,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:02:44,881 INFO L256 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-27 20:02:44,884 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:02:48,450 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 110 proven. 34 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-27 20:02:48,450 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:02:49,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-11-27 20:02:49,987 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:02:49,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 20 [2024-11-27 20:02:50,992 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 10 proven. 35 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-11-27 20:02:50,992 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:02:50,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976584731] [2024-11-27 20:02:50,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976584731] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:02:50,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:02:50,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 27 [2024-11-27 20:02:50,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066901757] [2024-11-27 20:02:50,993 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 20:02:50,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-27 20:02:50,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:02:50,994 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-27 20:02:50,994 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2024-11-27 20:02:50,995 INFO L87 Difference]: Start difference. First operand 447 states and 576 transitions. Second operand has 27 states, 27 states have (on average 4.962962962962963) internal successors, (134), 25 states have internal predecessors, (134), 11 states have call successors, (26), 3 states have call predecessors, (26), 6 states have return successors, (26), 11 states have call predecessors, (26), 10 states have call successors, (26) [2024-11-27 20:02:55,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:02:59,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:03:13,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:03:13,351 INFO L93 Difference]: Finished difference Result 1234 states and 1598 transitions. [2024-11-27 20:03:13,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-27 20:03:13,352 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.962962962962963) internal successors, (134), 25 states have internal predecessors, (134), 11 states have call successors, (26), 3 states have call predecessors, (26), 6 states have return successors, (26), 11 states have call predecessors, (26), 10 states have call successors, (26) Word has length 148 [2024-11-27 20:03:13,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:03:13,357 INFO L225 Difference]: With dead ends: 1234 [2024-11-27 20:03:13,358 INFO L226 Difference]: Without dead ends: 798 [2024-11-27 20:03:13,360 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 274 SyntacticMatches, 10 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=422, Invalid=2440, Unknown=0, NotChecked=0, Total=2862 [2024-11-27 20:03:13,361 INFO L435 NwaCegarLoop]: 182 mSDtfsCounter, 342 mSDsluCounter, 2899 mSDsCounter, 0 mSdLazyCounter, 1991 mSolverCounterSat, 145 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 3081 SdHoareTripleChecker+Invalid, 2138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1991 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:03:13,361 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 3081 Invalid, 2138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1991 Invalid, 2 Unknown, 0 Unchecked, 19.1s Time] [2024-11-27 20:03:13,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2024-11-27 20:03:13,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 677. [2024-11-27 20:03:13,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 489 states have (on average 1.2351738241308794) internal successors, (604), 504 states have internal predecessors, (604), 125 states have call successors, (125), 52 states have call predecessors, (125), 62 states have return successors, (152), 120 states have call predecessors, (152), 121 states have call successors, (152) [2024-11-27 20:03:13,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 881 transitions. [2024-11-27 20:03:13,491 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 881 transitions. Word has length 148 [2024-11-27 20:03:13,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:03:13,491 INFO L471 AbstractCegarLoop]: Abstraction has 677 states and 881 transitions. [2024-11-27 20:03:13,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.962962962962963) internal successors, (134), 25 states have internal predecessors, (134), 11 states have call successors, (26), 3 states have call predecessors, (26), 6 states have return successors, (26), 11 states have call predecessors, (26), 10 states have call successors, (26) [2024-11-27 20:03:13,492 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 881 transitions. [2024-11-27 20:03:13,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-27 20:03:13,494 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:03:13,494 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:03:13,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-27 20:03:13,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:03:13,694 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:03:13,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:03:13,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1693516336, now seen corresponding path program 1 times [2024-11-27 20:03:13,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:03:13,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [728790418] [2024-11-27 20:03:13,695 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:03:13,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:03:13,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:03:13,697 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:03:13,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25073f22-44cb-4869-b445-e13c54c414cf/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-27 20:03:13,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:03:13,974 INFO L256 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-27 20:03:13,978 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:03:14,351 INFO L349 Elim1Store]: treesize reduction 50, result has 41.2 percent of original size [2024-11-27 20:03:14,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 60 treesize of output 104 [2024-11-27 20:03:14,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2024-11-27 20:03:14,422 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 20:03:14,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 1 [2024-11-27 20:03:14,492 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 20:03:14,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 9 [2024-11-27 20:03:14,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2024-11-27 20:03:14,525 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base|) (_ bv24 64)))) (and (not (= (_ bv0 64) .cse0)) (or (= |c_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base| .cse0) (exists ((v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse1 (select |c_#memory_$Pointer$#2.base| .cse0))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse0 v_DerPreprocessor_1) |c_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base| (store .cse1 (_ bv24 64) .cse0)) .cse0) .cse1)))) (= (_ bv0 64) |c_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.offset|))) is different from true [2024-11-27 20:03:15,297 WARN L873 $PredicateComparison]: unable to prove that (and (or (exists ((|v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_38| (_ BitVec 64))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_38|) (_ bv24 64)))) (and (exists ((v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 (select |c_#memory_$Pointer$#2.base| .cse1))) (= .cse0 (select (store (store |c_#memory_$Pointer$#2.base| .cse1 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_38| (store .cse0 (_ bv24 64) .cse1)) .cse1)))) (not (= .cse1 (_ bv0 64)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_38| (_ BitVec 64))) (let ((.cse2 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_38|) (_ bv24 64)))) (and (= .cse2 |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_38|) (not (= .cse2 (_ bv0 64))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_39| (_ BitVec 64))) (let ((.cse3 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_39|) (_ bv24 64)))) (and (not (= (_ bv0 64) .cse3)) (exists ((v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse4 (select |c_#memory_$Pointer$#2.base| .cse3))) (= .cse4 (select (store (store |c_#memory_$Pointer$#2.base| .cse3 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_39| (store .cse4 (_ bv24 64) .cse3)) .cse3))))))) (exists ((|v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_39| (_ BitVec 64))) (let ((.cse5 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_39|) (_ bv24 64)))) (and (not (= (_ bv0 64) .cse5)) (= |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_39| .cse5)))))) is different from true [2024-11-27 20:03:16,018 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse6 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base|) (_ bv24 64)))) (and (or (exists ((|v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_38| (_ BitVec 64))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_38|) (_ bv24 64)))) (and (exists ((v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 (select |c_#memory_$Pointer$#2.base| .cse1))) (= .cse0 (select (store (store |c_#memory_$Pointer$#2.base| .cse1 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_38| (store .cse0 (_ bv24 64) .cse1)) .cse1)))) (not (= .cse1 (_ bv0 64)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_38| (_ BitVec 64))) (let ((.cse2 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_38|) (_ bv24 64)))) (and (= .cse2 |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_38|) (not (= .cse2 (_ bv0 64))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_39| (_ BitVec 64))) (let ((.cse3 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_39|) (_ bv24 64)))) (and (not (= (_ bv0 64) .cse3)) (exists ((v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse4 (select |c_#memory_$Pointer$#2.base| .cse3))) (= .cse4 (select (store (store |c_#memory_$Pointer$#2.base| .cse3 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_39| (store .cse4 (_ bv24 64) .cse3)) .cse3))))))) (exists ((|v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_39| (_ BitVec 64))) (let ((.cse5 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_39|) (_ bv24 64)))) (and (not (= (_ bv0 64) .cse5)) (= |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_39| .cse5))))) (not (= (_ bv0 64) .cse6)) (or (exists ((v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse7 (select |c_#memory_$Pointer$#2.base| .cse6))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse6 v_DerPreprocessor_1) |c_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base| (store .cse7 (_ bv24 64) .cse6)) .cse6) .cse7))) (= |c_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base| .cse6)) (= (_ bv0 64) |c_ULTIMATE.start_aws_linked_list_pop_back_~list#1.offset|))) is different from true [2024-11-27 20:03:16,131 WARN L873 $PredicateComparison]: unable to prove that (and (or (exists ((|v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_38| (_ BitVec 64))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_38|) (_ bv24 64)))) (and (exists ((v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 (select |c_#memory_$Pointer$#2.base| .cse1))) (= .cse0 (select (store (store |c_#memory_$Pointer$#2.base| .cse1 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_38| (store .cse0 (_ bv24 64) .cse1)) .cse1)))) (not (= .cse1 (_ bv0 64)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_38| (_ BitVec 64))) (let ((.cse2 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_38|) (_ bv24 64)))) (and (= .cse2 |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_38|) (not (= .cse2 (_ bv0 64))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_39| (_ BitVec 64))) (let ((.cse3 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_39|) (_ bv24 64)))) (and (not (= (_ bv0 64) .cse3)) (exists ((v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse4 (select |c_#memory_$Pointer$#2.base| .cse3))) (= .cse4 (select (store (store |c_#memory_$Pointer$#2.base| .cse3 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_39| (store .cse4 (_ bv24 64) .cse3)) .cse3))))))) (exists ((|v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_39| (_ BitVec 64))) (let ((.cse5 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_39|) (_ bv24 64)))) (and (not (= (_ bv0 64) .cse5)) (= |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_39| .cse5))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base_BEFORE_CALL_34| (_ BitVec 64))) (let ((.cse6 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base_BEFORE_CALL_34|) (_ bv24 64)))) (and (exists ((v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse7 (select |c_#memory_$Pointer$#2.base| .cse6))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse6 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base_BEFORE_CALL_34| (store .cse7 (_ bv24 64) .cse6)) .cse6) .cse7))) (not (= (_ bv0 64) .cse6))))) (exists ((|v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base_BEFORE_CALL_34| (_ BitVec 64))) (let ((.cse8 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base_BEFORE_CALL_34|) (_ bv24 64)))) (and (= |v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base_BEFORE_CALL_34| .cse8) (not (= (_ bv0 64) .cse8))))))) is different from true [2024-11-27 20:03:17,355 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse6 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base|) (_ bv24 64)))) (and (or (exists ((|v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_38| (_ BitVec 64))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_38|) (_ bv24 64)))) (and (exists ((v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 (select |c_#memory_$Pointer$#2.base| .cse1))) (= .cse0 (select (store (store |c_#memory_$Pointer$#2.base| .cse1 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_38| (store .cse0 (_ bv24 64) .cse1)) .cse1)))) (not (= .cse1 (_ bv0 64)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_38| (_ BitVec 64))) (let ((.cse2 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_38|) (_ bv24 64)))) (and (= .cse2 |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_38|) (not (= .cse2 (_ bv0 64))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_39| (_ BitVec 64))) (let ((.cse3 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_39|) (_ bv24 64)))) (and (not (= (_ bv0 64) .cse3)) (exists ((v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse4 (select |c_#memory_$Pointer$#2.base| .cse3))) (= .cse4 (select (store (store |c_#memory_$Pointer$#2.base| .cse3 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_39| (store .cse4 (_ bv24 64) .cse3)) .cse3))))))) (exists ((|v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_39| (_ BitVec 64))) (let ((.cse5 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_39|) (_ bv24 64)))) (and (not (= (_ bv0 64) .cse5)) (= |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_39| .cse5))))) (not (= (_ bv0 64) .cse6)) (or (exists ((v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse7 (select |c_#memory_$Pointer$#2.base| .cse6))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse6 v_DerPreprocessor_1) |c_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base| (store .cse7 (_ bv24 64) .cse6)) .cse6) .cse7))) (= |c_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base| .cse6)) (= (_ bv0 64) |c_ULTIMATE.start_aws_linked_list_pop_back_~list#1.offset|) (or (exists ((|v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base_BEFORE_CALL_34| (_ BitVec 64))) (let ((.cse8 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base_BEFORE_CALL_34|) (_ bv24 64)))) (and (exists ((v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse9 (select |c_#memory_$Pointer$#2.base| .cse8))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse8 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base_BEFORE_CALL_34| (store .cse9 (_ bv24 64) .cse8)) .cse8) .cse9))) (not (= (_ bv0 64) .cse8))))) (exists ((|v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base_BEFORE_CALL_34| (_ BitVec 64))) (let ((.cse10 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base_BEFORE_CALL_34|) (_ bv24 64)))) (and (= |v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base_BEFORE_CALL_34| .cse10) (not (= (_ bv0 64) .cse10)))))))) is different from true [2024-11-27 20:03:17,547 WARN L873 $PredicateComparison]: unable to prove that (and (or (exists ((|v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_38| (_ BitVec 64))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_38|) (_ bv24 64)))) (and (exists ((v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 (select |c_#memory_$Pointer$#2.base| .cse1))) (= .cse0 (select (store (store |c_#memory_$Pointer$#2.base| .cse1 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_38| (store .cse0 (_ bv24 64) .cse1)) .cse1)))) (not (= .cse1 (_ bv0 64)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_38| (_ BitVec 64))) (let ((.cse2 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_38|) (_ bv24 64)))) (and (= .cse2 |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_38|) (not (= .cse2 (_ bv0 64))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base_BEFORE_CALL_35| (_ BitVec 64))) (let ((.cse3 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base_BEFORE_CALL_35|) (_ bv24 64)))) (and (not (= (_ bv0 64) .cse3)) (= |v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base_BEFORE_CALL_35| .cse3)))) (exists ((|v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base_BEFORE_CALL_35| (_ BitVec 64))) (let ((.cse4 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base_BEFORE_CALL_35|) (_ bv24 64)))) (and (exists ((v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse5 (select |c_#memory_$Pointer$#2.base| .cse4))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse4 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base_BEFORE_CALL_35| (store .cse5 (_ bv24 64) .cse4)) .cse4) .cse5))) (not (= (_ bv0 64) .cse4)))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_39| (_ BitVec 64))) (let ((.cse6 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_39|) (_ bv24 64)))) (and (not (= (_ bv0 64) .cse6)) (exists ((v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse7 (select |c_#memory_$Pointer$#2.base| .cse6))) (= .cse7 (select (store (store |c_#memory_$Pointer$#2.base| .cse6 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_39| (store .cse7 (_ bv24 64) .cse6)) .cse6))))))) (exists ((|v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_39| (_ BitVec 64))) (let ((.cse8 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_39|) (_ bv24 64)))) (and (not (= (_ bv0 64) .cse8)) (= |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_39| .cse8))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base_BEFORE_CALL_34| (_ BitVec 64))) (let ((.cse9 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base_BEFORE_CALL_34|) (_ bv24 64)))) (and (exists ((v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse10 (select |c_#memory_$Pointer$#2.base| .cse9))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse9 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base_BEFORE_CALL_34| (store .cse10 (_ bv24 64) .cse9)) .cse9) .cse10))) (not (= (_ bv0 64) .cse9))))) (exists ((|v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base_BEFORE_CALL_34| (_ BitVec 64))) (let ((.cse11 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base_BEFORE_CALL_34|) (_ bv24 64)))) (and (= |v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base_BEFORE_CALL_34| .cse11) (not (= (_ bv0 64) .cse11))))))) is different from true [2024-11-27 20:03:18,252 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse9 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base|) (_ bv24 64)))) (and (or (exists ((|v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_38| (_ BitVec 64))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_38|) (_ bv24 64)))) (and (exists ((v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 (select |c_#memory_$Pointer$#2.base| .cse1))) (= .cse0 (select (store (store |c_#memory_$Pointer$#2.base| .cse1 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_38| (store .cse0 (_ bv24 64) .cse1)) .cse1)))) (not (= .cse1 (_ bv0 64)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_38| (_ BitVec 64))) (let ((.cse2 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_38|) (_ bv24 64)))) (and (= .cse2 |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_38|) (not (= .cse2 (_ bv0 64))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base_BEFORE_CALL_35| (_ BitVec 64))) (let ((.cse3 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base_BEFORE_CALL_35|) (_ bv24 64)))) (and (not (= (_ bv0 64) .cse3)) (= |v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base_BEFORE_CALL_35| .cse3)))) (exists ((|v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base_BEFORE_CALL_35| (_ BitVec 64))) (let ((.cse4 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base_BEFORE_CALL_35|) (_ bv24 64)))) (and (exists ((v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse5 (select |c_#memory_$Pointer$#2.base| .cse4))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse4 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base_BEFORE_CALL_35| (store .cse5 (_ bv24 64) .cse4)) .cse4) .cse5))) (not (= (_ bv0 64) .cse4)))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_39| (_ BitVec 64))) (let ((.cse6 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_39|) (_ bv24 64)))) (and (not (= (_ bv0 64) .cse6)) (exists ((v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse7 (select |c_#memory_$Pointer$#2.base| .cse6))) (= .cse7 (select (store (store |c_#memory_$Pointer$#2.base| .cse6 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_39| (store .cse7 (_ bv24 64) .cse6)) .cse6))))))) (exists ((|v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_39| (_ BitVec 64))) (let ((.cse8 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_39|) (_ bv24 64)))) (and (not (= (_ bv0 64) .cse8)) (= |v_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base_BEFORE_CALL_39| .cse8))))) (not (= (_ bv0 64) .cse9)) (or (exists ((v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse10 (select |c_#memory_$Pointer$#2.base| .cse9))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse9 v_DerPreprocessor_1) |c_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base| (store .cse10 (_ bv24 64) .cse9)) .cse9) .cse10))) (= |c_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base| .cse9)) (= (_ bv0 64) |c_ULTIMATE.start_aws_linked_list_pop_back_~list#1.offset|) (or (exists ((|v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base_BEFORE_CALL_34| (_ BitVec 64))) (let ((.cse11 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base_BEFORE_CALL_34|) (_ bv24 64)))) (and (exists ((v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse12 (select |c_#memory_$Pointer$#2.base| .cse11))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse11 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base_BEFORE_CALL_34| (store .cse12 (_ bv24 64) .cse11)) .cse11) .cse12))) (not (= (_ bv0 64) .cse11))))) (exists ((|v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base_BEFORE_CALL_34| (_ BitVec 64))) (let ((.cse13 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base_BEFORE_CALL_34|) (_ bv24 64)))) (and (= |v_ULTIMATE.start_aws_linked_list_pop_back_~list#1.base_BEFORE_CALL_34| .cse13) (not (= (_ bv0 64) .cse13)))))))) is different from true