./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_remove_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_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/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_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_remove_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/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_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/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 f1ed2bbae9bfc9fe23e20625a052e41a5dc8bd90714a305d96277dd3b876e5be --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:15:13,601 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:15:13,720 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-27 20:15:13,726 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:15:13,726 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:15:13,753 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:15:13,754 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:15:13,754 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:15:13,757 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:15:13,758 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:15:13,758 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:15:13,758 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:15:13,758 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:15:13,758 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:15:13,759 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:15:13,759 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:15:13,759 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:15:13,759 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:15:13,759 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:15:13,759 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:15:13,760 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:15:13,760 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:15:13,760 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:15:13,760 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:15:13,760 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:15:13,762 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:15:13,762 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:15:13,763 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:15:13,763 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:15:13,763 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:15:13,763 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:15:13,763 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:15:13,763 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:15:13,763 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:15:13,763 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:15:13,764 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:15:13,764 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:15:13,764 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:15:13,764 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:15:13,764 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:15:13,764 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:15:13,764 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:15:13,764 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:15:13,764 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:15:13,764 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:15:13,765 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_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/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 -> f1ed2bbae9bfc9fe23e20625a052e41a5dc8bd90714a305d96277dd3b876e5be [2024-11-27 20:15:14,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:15:14,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:15:14,182 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:15:14,183 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:15:14,184 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:15:14,185 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/aws-c-common/aws_linked_list_remove_harness.i [2024-11-27 20:15:18,037 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/data/a337edba2/bec75c1f405d44beac8d434857b56174/FLAGab062f122 [2024-11-27 20:15:18,752 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:15:18,753 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/sv-benchmarks/c/aws-c-common/aws_linked_list_remove_harness.i [2024-11-27 20:15:18,810 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/data/a337edba2/bec75c1f405d44beac8d434857b56174/FLAGab062f122 [2024-11-27 20:15:19,151 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/data/a337edba2/bec75c1f405d44beac8d434857b56174 [2024-11-27 20:15:19,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:15:19,156 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:15:19,158 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:15:19,158 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:15:19,164 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:15:19,165 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:15:19" (1/1) ... [2024-11-27 20:15:19,166 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@586c6c0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:19, skipping insertion in model container [2024-11-27 20:15:19,166 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:15:19" (1/1) ... [2024-11-27 20:15:19,267 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:15:19,623 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_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/sv-benchmarks/c/aws-c-common/aws_linked_list_remove_harness.i[4496,4509] [2024-11-27 20:15:19,631 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_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/sv-benchmarks/c/aws-c-common/aws_linked_list_remove_harness.i[4556,4569] [2024-11-27 20:15:20,655 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:15:20,656 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:15:20,656 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:15:20,657 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:15:20,659 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:15:20,685 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:15:20,686 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:15:20,690 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:15:20,694 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:15:20,696 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:15:20,698 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:15:20,699 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:15:20,700 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:15:21,491 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_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/sv-benchmarks/c/aws-c-common/aws_linked_list_remove_harness.i[150649,150662] [2024-11-27 20:15:21,496 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:15:21,531 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:15:21,548 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_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/sv-benchmarks/c/aws-c-common/aws_linked_list_remove_harness.i[4496,4509] [2024-11-27 20:15:21,549 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_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/sv-benchmarks/c/aws-c-common/aws_linked_list_remove_harness.i[4556,4569] [2024-11-27 20:15:21,662 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:15:21,662 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:15:21,663 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:15:21,663 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:15:21,664 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:15:21,676 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:15:21,677 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:15:21,678 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:15:21,678 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:15:21,680 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:15:21,681 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:15:21,681 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:15:21,682 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:15:21,916 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_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/sv-benchmarks/c/aws-c-common/aws_linked_list_remove_harness.i[150649,150662] [2024-11-27 20:15:21,919 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:15:22,118 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:15:22,119 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:22 WrapperNode [2024-11-27 20:15:22,119 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:15:22,120 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:15:22,121 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:15:22,121 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:15:22,127 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:22" (1/1) ... [2024-11-27 20:15:22,210 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:22" (1/1) ... [2024-11-27 20:15:22,244 INFO L138 Inliner]: procedures = 668, calls = 1048, calls flagged for inlining = 50, calls inlined = 4, statements flattened = 86 [2024-11-27 20:15:22,245 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:15:22,246 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:15:22,249 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:15:22,249 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:15:22,260 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:22" (1/1) ... [2024-11-27 20:15:22,260 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:22" (1/1) ... [2024-11-27 20:15:22,264 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:22" (1/1) ... [2024-11-27 20:15:22,294 INFO L175 MemorySlicer]: Split 30 memory accesses to 3 slices as follows [2, 5, 23]. 77 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 7 writes are split as follows [0, 0, 7]. [2024-11-27 20:15:22,298 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:22" (1/1) ... [2024-11-27 20:15:22,299 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:22" (1/1) ... [2024-11-27 20:15:22,329 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:22" (1/1) ... [2024-11-27 20:15:22,335 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:22" (1/1) ... [2024-11-27 20:15:22,343 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:22" (1/1) ... [2024-11-27 20:15:22,351 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:22" (1/1) ... [2024-11-27 20:15:22,353 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:22" (1/1) ... [2024-11-27 20:15:22,365 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:15:22,369 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:15:22,369 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:15:22,370 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:15:22,371 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:22" (1/1) ... [2024-11-27 20:15:22,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:15:22,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:15:22,420 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:15:22,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:15:22,462 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2024-11-27 20:15:22,462 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2024-11-27 20:15:22,462 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_remove [2024-11-27 20:15:22,462 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_remove [2024-11-27 20:15:22,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-27 20:15:22,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-27 20:15:22,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-27 20:15:22,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-27 20:15:22,466 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-27 20:15:22,466 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-27 20:15:22,467 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2024-11-27 20:15:22,467 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2024-11-27 20:15:22,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:15:22,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-27 20:15:22,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-27 20:15:22,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-27 20:15:22,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:15:22,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:15:22,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-27 20:15:22,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-27 20:15:22,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-27 20:15:22,470 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-27 20:15:22,470 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-27 20:15:22,470 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-27 20:15:22,471 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-27 20:15:22,471 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-27 20:15:22,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-27 20:15:22,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-27 20:15:22,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-27 20:15:22,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-27 20:15:22,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-27 20:15:22,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-27 20:15:22,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-27 20:15:22,472 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2024-11-27 20:15:22,472 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2024-11-27 20:15:22,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:15:22,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 20:15:22,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-27 20:15:22,848 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:15:22,850 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:15:23,305 INFO L? ?]: Removed 48 outVars from TransFormulas that were not future-live. [2024-11-27 20:15:23,305 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:15:23,321 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:15:23,321 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 20:15:23,321 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:15:23 BoogieIcfgContainer [2024-11-27 20:15:23,322 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:15:23,324 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:15:23,324 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:15:23,331 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:15:23,331 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:15:19" (1/3) ... [2024-11-27 20:15:23,332 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fc4309b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:15:23, skipping insertion in model container [2024-11-27 20:15:23,332 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:22" (2/3) ... [2024-11-27 20:15:23,333 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fc4309b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:15:23, skipping insertion in model container [2024-11-27 20:15:23,333 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:15:23" (3/3) ... [2024-11-27 20:15:23,334 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_linked_list_remove_harness.i [2024-11-27 20:15:23,359 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:15:23,361 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_linked_list_remove_harness.i that has 10 procedures, 82 locations, 1 initial locations, 5 loop locations, and 1 error locations. [2024-11-27 20:15:23,447 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:15:23,465 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;@3e9d4ec5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:15:23,466 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 20:15:23,472 INFO L276 IsEmpty]: Start isEmpty. Operand has 74 states, 49 states have (on average 1.2653061224489797) internal successors, (62), 50 states have internal predecessors, (62), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-27 20:15:23,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-27 20:15:23,484 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:15:23,485 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-27 20:15:23,487 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:15:23,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:23,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1261586903, now seen corresponding path program 1 times [2024-11-27 20:15:23,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:23,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640502780] [2024-11-27 20:15:23,507 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:23,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:23,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:24,138 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-27 20:15:24,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:24,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640502780] [2024-11-27 20:15:24,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640502780] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:15:24,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34125920] [2024-11-27 20:15:24,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:24,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:24,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:15:24,157 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:15:24,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:15:24,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:24,557 INFO L256 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-27 20:15:24,567 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:15:24,594 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-27 20:15:24,595 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:15:24,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34125920] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:15:24,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:15:24,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-27 20:15:24,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181944385] [2024-11-27 20:15:24,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:24,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 20:15:24,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:24,634 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 20:15:24,635 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:15:24,639 INFO L87 Difference]: Start difference. First operand has 74 states, 49 states have (on average 1.2653061224489797) internal successors, (62), 50 states have internal predecessors, (62), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-27 20:15:24,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:15:24,690 INFO L93 Difference]: Finished difference Result 142 states and 195 transitions. [2024-11-27 20:15:24,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 20:15:24,693 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 48 [2024-11-27 20:15:24,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:15:24,704 INFO L225 Difference]: With dead ends: 142 [2024-11-27 20:15:24,704 INFO L226 Difference]: Without dead ends: 69 [2024-11-27 20:15:24,711 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 49 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 20:15:24,716 INFO L435 NwaCegarLoop]: 91 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, 91 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 20:15:24,717 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:15:24,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-27 20:15:24,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-11-27 20:15:24,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 44 states have (on average 1.2045454545454546) internal successors, (53), 45 states have internal predecessors, (53), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-27 20:15:24,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 86 transitions. [2024-11-27 20:15:24,766 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 86 transitions. Word has length 48 [2024-11-27 20:15:24,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:15:24,768 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 86 transitions. [2024-11-27 20:15:24,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-27 20:15:24,769 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 86 transitions. [2024-11-27 20:15:24,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-27 20:15:24,771 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:15:24,771 INFO L218 NwaCegarLoop]: trace histogram [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, 1] [2024-11-27 20:15:24,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-27 20:15:24,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-27 20:15:24,972 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:15:24,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:24,974 INFO L85 PathProgramCache]: Analyzing trace with hash -924444086, now seen corresponding path program 1 times [2024-11-27 20:15:24,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:24,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958661637] [2024-11-27 20:15:24,974 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:24,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:25,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:25,833 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 20:15:25,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:25,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958661637] [2024-11-27 20:15:25,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958661637] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:15:25,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:15:25,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 20:15:25,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872678850] [2024-11-27 20:15:25,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:25,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:15:25,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:25,839 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:15:25,839 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:15:25,840 INFO L87 Difference]: Start difference. First operand 69 states and 86 transitions. Second operand has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-27 20:15:26,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:15:26,067 INFO L93 Difference]: Finished difference Result 139 states and 173 transitions. [2024-11-27 20:15:26,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 20:15:26,068 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 54 [2024-11-27 20:15:26,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:15:26,074 INFO L225 Difference]: With dead ends: 139 [2024-11-27 20:15:26,076 INFO L226 Difference]: Without dead ends: 78 [2024-11-27 20:15:26,078 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:15:26,079 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 26 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:15:26,079 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 416 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 20:15:26,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-27 20:15:26,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 74. [2024-11-27 20:15:26,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 48 states have (on average 1.2083333333333333) internal successors, (58), 50 states have internal predecessors, (58), 17 states have call successors, (17), 7 states have call predecessors, (17), 8 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) [2024-11-27 20:15:26,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 92 transitions. [2024-11-27 20:15:26,114 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 92 transitions. Word has length 54 [2024-11-27 20:15:26,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:15:26,114 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 92 transitions. [2024-11-27 20:15:26,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-27 20:15:26,116 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 92 transitions. [2024-11-27 20:15:26,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-27 20:15:26,119 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:15:26,119 INFO L218 NwaCegarLoop]: trace histogram [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, 1] [2024-11-27 20:15:26,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:15:26,119 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:15:26,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:26,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1319539212, now seen corresponding path program 1 times [2024-11-27 20:15:26,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:26,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396524019] [2024-11-27 20:15:26,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:26,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:26,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:26,948 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 20:15:26,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:26,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396524019] [2024-11-27 20:15:26,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396524019] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:15:26,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:15:26,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:15:26,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303124398] [2024-11-27 20:15:26,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:26,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:15:26,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:26,950 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:15:26,953 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:15:26,953 INFO L87 Difference]: Start difference. First operand 74 states and 92 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-27 20:15:27,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:15:27,064 INFO L93 Difference]: Finished difference Result 84 states and 102 transitions. [2024-11-27 20:15:27,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:15:27,065 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 54 [2024-11-27 20:15:27,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:15:27,067 INFO L225 Difference]: With dead ends: 84 [2024-11-27 20:15:27,069 INFO L226 Difference]: Without dead ends: 82 [2024-11-27 20:15:27,069 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:15:27,072 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 3 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:15:27,072 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 404 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:15:27,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-27 20:15:27,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2024-11-27 20:15:27,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 52 states have (on average 1.1923076923076923) internal successors, (62), 55 states have internal predecessors, (62), 18 states have call successors, (18), 8 states have call predecessors, (18), 10 states have return successors, (19), 17 states have call predecessors, (19), 17 states have call successors, (19) [2024-11-27 20:15:27,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 99 transitions. [2024-11-27 20:15:27,099 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 99 transitions. Word has length 54 [2024-11-27 20:15:27,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:15:27,100 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 99 transitions. [2024-11-27 20:15:27,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-27 20:15:27,100 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 99 transitions. [2024-11-27 20:15:27,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-27 20:15:27,104 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:15:27,104 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1] [2024-11-27 20:15:27,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 20:15:27,105 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:15:27,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:27,105 INFO L85 PathProgramCache]: Analyzing trace with hash 772011091, now seen corresponding path program 1 times [2024-11-27 20:15:27,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:27,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881311644] [2024-11-27 20:15:27,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:27,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:27,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:27,640 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 20:15:27,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:27,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881311644] [2024-11-27 20:15:27,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881311644] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:15:27,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:15:27,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:15:27,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920561573] [2024-11-27 20:15:27,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:27,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:15:27,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:27,642 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:15:27,642 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:15:27,643 INFO L87 Difference]: Start difference. First operand 81 states and 99 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-27 20:15:27,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:15:27,695 INFO L93 Difference]: Finished difference Result 145 states and 177 transitions. [2024-11-27 20:15:27,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:15:27,697 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 55 [2024-11-27 20:15:27,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:15:27,698 INFO L225 Difference]: With dead ends: 145 [2024-11-27 20:15:27,698 INFO L226 Difference]: Without dead ends: 82 [2024-11-27 20:15:27,699 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 20:15:27,703 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 0 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:15:27,703 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 250 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:15:27,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-27 20:15:27,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-11-27 20:15:27,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 53 states have (on average 1.1886792452830188) internal successors, (63), 56 states have internal predecessors, (63), 18 states have call successors, (18), 8 states have call predecessors, (18), 10 states have return successors, (19), 17 states have call predecessors, (19), 17 states have call successors, (19) [2024-11-27 20:15:27,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 100 transitions. [2024-11-27 20:15:27,727 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 100 transitions. Word has length 55 [2024-11-27 20:15:27,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:15:27,728 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 100 transitions. [2024-11-27 20:15:27,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-27 20:15:27,728 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 100 transitions. [2024-11-27 20:15:27,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-27 20:15:27,729 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:15:27,730 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1] [2024-11-27 20:15:27,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 20:15:27,730 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:15:27,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:27,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1056874079, now seen corresponding path program 1 times [2024-11-27 20:15:27,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:27,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770006449] [2024-11-27 20:15:27,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:27,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:27,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:28,316 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 20:15:28,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:28,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770006449] [2024-11-27 20:15:28,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770006449] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:15:28,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544859547] [2024-11-27 20:15:28,317 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:28,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:28,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:15:28,324 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:15:28,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:15:28,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:28,690 INFO L256 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-27 20:15:28,699 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:15:28,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-27 20:15:29,545 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 20:15:29,545 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:15:30,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-27 20:15:30,455 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 16 treesize of output 14 [2024-11-27 20:15:30,609 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 20:15:30,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544859547] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:15:30,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:15:30,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 16, 10] total 26 [2024-11-27 20:15:30,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085307752] [2024-11-27 20:15:30,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:15:30,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-27 20:15:30,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:30,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-27 20:15:30,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=582, Unknown=0, NotChecked=0, Total=650 [2024-11-27 20:15:30,614 INFO L87 Difference]: Start difference. First operand 82 states and 100 transitions. Second operand has 26 states, 24 states have (on average 2.7083333333333335) internal successors, (65), 23 states have internal predecessors, (65), 7 states have call successors, (19), 5 states have call predecessors, (19), 7 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-27 20:15:32,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:15:32,929 INFO L93 Difference]: Finished difference Result 176 states and 213 transitions. [2024-11-27 20:15:32,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-27 20:15:32,930 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 2.7083333333333335) internal successors, (65), 23 states have internal predecessors, (65), 7 states have call successors, (19), 5 states have call predecessors, (19), 7 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 56 [2024-11-27 20:15:32,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:15:32,932 INFO L225 Difference]: With dead ends: 176 [2024-11-27 20:15:32,932 INFO L226 Difference]: Without dead ends: 106 [2024-11-27 20:15:32,934 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=204, Invalid=1776, Unknown=0, NotChecked=0, Total=1980 [2024-11-27 20:15:32,935 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 133 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 1238 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:15:32,935 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 1238 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-27 20:15:32,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-27 20:15:32,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 95. [2024-11-27 20:15:32,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 65 states have (on average 1.2) internal successors, (78), 67 states have internal predecessors, (78), 18 states have call successors, (18), 10 states have call predecessors, (18), 11 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2024-11-27 20:15:32,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 114 transitions. [2024-11-27 20:15:32,956 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 114 transitions. Word has length 56 [2024-11-27 20:15:32,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:15:32,956 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 114 transitions. [2024-11-27 20:15:32,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 2.7083333333333335) internal successors, (65), 23 states have internal predecessors, (65), 7 states have call successors, (19), 5 states have call predecessors, (19), 7 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-27 20:15:32,957 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 114 transitions. [2024-11-27 20:15:32,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-27 20:15:32,958 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:15:32,958 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-27 20:15:32,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 20:15:33,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:33,163 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:15:33,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:33,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1953375935, now seen corresponding path program 1 times [2024-11-27 20:15:33,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:33,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665568010] [2024-11-27 20:15:33,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:33,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:33,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:33,809 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-27 20:15:33,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:33,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665568010] [2024-11-27 20:15:33,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665568010] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:15:33,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703674411] [2024-11-27 20:15:33,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:33,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:33,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:15:33,813 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:15:33,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:15:34,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:34,140 INFO L256 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-27 20:15:34,145 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:15:34,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-27 20:15:34,335 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 21 treesize of output 20 [2024-11-27 20:15:35,031 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 20:15:35,032 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:15:36,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-27 20:15:36,101 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 27 treesize of output 23 [2024-11-27 20:15:36,211 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 20:15:36,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703674411] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:15:36,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:15:36,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 18, 12] total 31 [2024-11-27 20:15:36,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475650883] [2024-11-27 20:15:36,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:15:36,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-27 20:15:36,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:36,216 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-27 20:15:36,217 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=842, Unknown=0, NotChecked=0, Total=930 [2024-11-27 20:15:36,217 INFO L87 Difference]: Start difference. First operand 95 states and 114 transitions. Second operand has 31 states, 29 states have (on average 2.586206896551724) internal successors, (75), 28 states have internal predecessors, (75), 7 states have call successors, (19), 5 states have call predecessors, (19), 7 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-27 20:15:38,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:15:38,849 INFO L93 Difference]: Finished difference Result 168 states and 204 transitions. [2024-11-27 20:15:38,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-27 20:15:38,850 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 2.586206896551724) internal successors, (75), 28 states have internal predecessors, (75), 7 states have call successors, (19), 5 states have call predecessors, (19), 7 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 60 [2024-11-27 20:15:38,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:15:38,852 INFO L225 Difference]: With dead ends: 168 [2024-11-27 20:15:38,852 INFO L226 Difference]: Without dead ends: 105 [2024-11-27 20:15:38,854 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=243, Invalid=2409, Unknown=0, NotChecked=0, Total=2652 [2024-11-27 20:15:38,855 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 145 mSDsluCounter, 1178 mSDsCounter, 0 mSdLazyCounter, 832 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1249 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:15:38,856 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 1249 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 832 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-27 20:15:38,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-27 20:15:38,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 99. [2024-11-27 20:15:38,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 69 states have (on average 1.2028985507246377) internal successors, (83), 71 states have internal predecessors, (83), 18 states have call successors, (18), 10 states have call predecessors, (18), 11 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2024-11-27 20:15:38,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 119 transitions. [2024-11-27 20:15:38,875 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 119 transitions. Word has length 60 [2024-11-27 20:15:38,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:15:38,876 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 119 transitions. [2024-11-27 20:15:38,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 2.586206896551724) internal successors, (75), 28 states have internal predecessors, (75), 7 states have call successors, (19), 5 states have call predecessors, (19), 7 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-27 20:15:38,876 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 119 transitions. [2024-11-27 20:15:38,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-27 20:15:38,882 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:15:38,882 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1] [2024-11-27 20:15:38,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 20:15:39,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-27 20:15:39,083 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:15:39,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:39,084 INFO L85 PathProgramCache]: Analyzing trace with hash -2078442297, now seen corresponding path program 1 times [2024-11-27 20:15:39,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:39,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406566854] [2024-11-27 20:15:39,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:39,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:39,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:39,740 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 20:15:39,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:39,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406566854] [2024-11-27 20:15:39,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406566854] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:15:39,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465842740] [2024-11-27 20:15:39,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:39,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:39,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:15:39,744 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:15:39,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 20:15:40,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:40,041 INFO L256 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-27 20:15:40,046 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:15:40,151 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-27 20:15:40,151 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:15:40,310 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-27 20:15:40,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465842740] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 20:15:40,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:15:40,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 6] total 12 [2024-11-27 20:15:40,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569867242] [2024-11-27 20:15:40,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:40,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:15:40,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:40,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:15:40,315 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-27 20:15:40,315 INFO L87 Difference]: Start difference. First operand 99 states and 119 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-27 20:15:40,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:15:40,386 INFO L93 Difference]: Finished difference Result 145 states and 174 transitions. [2024-11-27 20:15:40,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:15:40,387 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 65 [2024-11-27 20:15:40,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:15:40,388 INFO L225 Difference]: With dead ends: 145 [2024-11-27 20:15:40,388 INFO L226 Difference]: Without dead ends: 99 [2024-11-27 20:15:40,389 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-27 20:15:40,390 INFO L435 NwaCegarLoop]: 82 mSDtfsCounter, 4 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:15:40,390 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 163 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:15:40,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-27 20:15:40,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2024-11-27 20:15:40,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 69 states have (on average 1.1884057971014492) internal successors, (82), 71 states have internal predecessors, (82), 18 states have call successors, (18), 10 states have call predecessors, (18), 11 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2024-11-27 20:15:40,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 118 transitions. [2024-11-27 20:15:40,431 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 118 transitions. Word has length 65 [2024-11-27 20:15:40,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:15:40,435 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 118 transitions. [2024-11-27 20:15:40,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-27 20:15:40,436 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 118 transitions. [2024-11-27 20:15:40,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-27 20:15:40,437 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:15:40,437 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-27 20:15:40,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-27 20:15:40,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-27 20:15:40,638 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:15:40,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:40,639 INFO L85 PathProgramCache]: Analyzing trace with hash -223156575, now seen corresponding path program 2 times [2024-11-27 20:15:40,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:40,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997615311] [2024-11-27 20:15:40,640 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:15:40,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:40,757 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:15:40,758 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:15:41,209 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-27 20:15:41,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:41,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997615311] [2024-11-27 20:15:41,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997615311] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:15:41,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865534850] [2024-11-27 20:15:41,210 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:15:41,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:41,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:15:41,213 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:15:41,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 20:15:41,607 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:15:41,608 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:15:41,612 INFO L256 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-27 20:15:41,620 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:15:41,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-27 20:15:41,830 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 21 treesize of output 20 [2024-11-27 20:15:41,886 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:15:41,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 32 [2024-11-27 20:15:42,021 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-27 20:15:42,021 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:15:44,088 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 16 treesize of output 14 [2024-11-27 20:15:44,094 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 18 treesize of output 14 [2024-11-27 20:15:44,221 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 20:15:44,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865534850] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:15:44,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:15:44,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 14, 17] total 33 [2024-11-27 20:15:44,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354814239] [2024-11-27 20:15:44,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:15:44,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-27 20:15:44,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:44,223 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-27 20:15:44,224 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=935, Unknown=0, NotChecked=0, Total=1056 [2024-11-27 20:15:44,224 INFO L87 Difference]: Start difference. First operand 99 states and 118 transitions. Second operand has 33 states, 30 states have (on average 2.566666666666667) internal successors, (77), 30 states have internal predecessors, (77), 7 states have call successors, (19), 4 states have call predecessors, (19), 7 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-27 20:16:10,930 WARN L286 SmtUtils]: Spent 24.21s on a formula simplification. DAG size of input: 90 DAG size of output: 90 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-27 20:16:11,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:16:11,526 INFO L93 Difference]: Finished difference Result 182 states and 220 transitions. [2024-11-27 20:16:11,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-27 20:16:11,527 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 30 states have (on average 2.566666666666667) internal successors, (77), 30 states have internal predecessors, (77), 7 states have call successors, (19), 4 states have call predecessors, (19), 7 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) Word has length 64 [2024-11-27 20:16:11,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:16:11,529 INFO L225 Difference]: With dead ends: 182 [2024-11-27 20:16:11,529 INFO L226 Difference]: Without dead ends: 118 [2024-11-27 20:16:11,531 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 26.9s TimeCoverageRelationStatistics Valid=307, Invalid=2999, Unknown=0, NotChecked=0, Total=3306 [2024-11-27 20:16:11,532 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 137 mSDsluCounter, 1057 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:16:11,533 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 1111 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1019 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-27 20:16:11,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-27 20:16:11,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 103. [2024-11-27 20:16:11,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 73 states have (on average 1.2054794520547945) internal successors, (88), 75 states have internal predecessors, (88), 18 states have call successors, (18), 10 states have call predecessors, (18), 11 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2024-11-27 20:16:11,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 124 transitions. [2024-11-27 20:16:11,570 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 124 transitions. Word has length 64 [2024-11-27 20:16:11,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:16:11,570 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 124 transitions. [2024-11-27 20:16:11,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 30 states have (on average 2.566666666666667) internal successors, (77), 30 states have internal predecessors, (77), 7 states have call successors, (19), 4 states have call predecessors, (19), 7 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-27 20:16:11,571 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 124 transitions. [2024-11-27 20:16:11,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-27 20:16:11,573 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:16:11,573 INFO L218 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1] [2024-11-27 20:16:11,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-27 20:16:11,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:16:11,774 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:16:11,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:16:11,774 INFO L85 PathProgramCache]: Analyzing trace with hash 848974119, now seen corresponding path program 1 times [2024-11-27 20:16:11,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:16:11,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892139089] [2024-11-27 20:16:11,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:16:11,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:16:11,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:16:12,372 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-27 20:16:12,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:16:12,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892139089] [2024-11-27 20:16:12,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892139089] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:16:12,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926888769] [2024-11-27 20:16:12,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:16:12,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:16:12,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:16:12,378 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:16:12,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 20:16:12,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:16:12,708 INFO L256 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-27 20:16:12,710 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:16:12,876 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-27 20:16:12,876 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:16:13,093 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-27 20:16:13,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926888769] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:16:13,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:16:13,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 5] total 16 [2024-11-27 20:16:13,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066448922] [2024-11-27 20:16:13,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:16:13,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-27 20:16:13,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:16:13,096 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-27 20:16:13,096 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2024-11-27 20:16:13,096 INFO L87 Difference]: Start difference. First operand 103 states and 124 transitions. Second operand has 16 states, 16 states have (on average 4.5) internal successors, (72), 16 states have internal predecessors, (72), 2 states have call successors, (12), 2 states have call predecessors, (12), 6 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 20:16:13,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:16:13,489 INFO L93 Difference]: Finished difference Result 180 states and 218 transitions. [2024-11-27 20:16:13,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-27 20:16:13,490 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.5) internal successors, (72), 16 states have internal predecessors, (72), 2 states have call successors, (12), 2 states have call predecessors, (12), 6 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 69 [2024-11-27 20:16:13,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:16:13,491 INFO L225 Difference]: With dead ends: 180 [2024-11-27 20:16:13,492 INFO L226 Difference]: Without dead ends: 107 [2024-11-27 20:16:13,492 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2024-11-27 20:16:13,493 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 15 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:16:13,493 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 620 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 20:16:13,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-27 20:16:13,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2024-11-27 20:16:13,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 75 states have (on average 1.1733333333333333) internal successors, (88), 77 states have internal predecessors, (88), 18 states have call successors, (18), 10 states have call predecessors, (18), 11 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2024-11-27 20:16:13,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 124 transitions. [2024-11-27 20:16:13,517 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 124 transitions. Word has length 69 [2024-11-27 20:16:13,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:16:13,517 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 124 transitions. [2024-11-27 20:16:13,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.5) internal successors, (72), 16 states have internal predecessors, (72), 2 states have call successors, (12), 2 states have call predecessors, (12), 6 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 20:16:13,518 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 124 transitions. [2024-11-27 20:16:13,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-27 20:16:13,519 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:16:13,519 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 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 20:16:13,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-27 20:16:13,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:16:13,720 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:16:13,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:16:13,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1101604787, now seen corresponding path program 3 times [2024-11-27 20:16:13,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:16:13,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173521280] [2024-11-27 20:16:13,721 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:16:13,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:16:14,060 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-27 20:16:14,060 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:16:14,523 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:16:14,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:16:14,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173521280] [2024-11-27 20:16:14,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173521280] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:16:14,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328565706] [2024-11-27 20:16:14,523 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:16:14,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:16:14,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:16:14,526 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:16:14,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 20:16:15,919 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-27 20:16:15,919 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:16:15,924 INFO L256 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 89 conjuncts are in the unsatisfiable core [2024-11-27 20:16:15,929 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:16:16,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-27 20:16:16,231 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 21 treesize of output 20 [2024-11-27 20:16:16,296 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:16:16,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 32 [2024-11-27 20:16:16,383 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:16:16,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 39 treesize of output 44 [2024-11-27 20:16:16,485 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:16:16,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 48 treesize of output 56 [2024-11-27 20:16:16,692 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-27 20:16:16,692 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:16:19,302 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 16 treesize of output 14 [2024-11-27 20:16:19,306 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 18 treesize of output 14 [2024-11-27 20:16:19,423 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 20:16:19,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328565706] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:16:19,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:16:19,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 16, 20] total 40 [2024-11-27 20:16:19,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209137604] [2024-11-27 20:16:19,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:16:19,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-27 20:16:19,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:16:19,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-27 20:16:19,427 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1391, Unknown=0, NotChecked=0, Total=1560 [2024-11-27 20:16:19,428 INFO L87 Difference]: Start difference. First operand 105 states and 124 transitions. Second operand has 40 states, 37 states have (on average 2.324324324324324) internal successors, (86), 37 states have internal predecessors, (86), 7 states have call successors, (19), 4 states have call predecessors, (19), 7 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-27 20:17:19,881 WARN L286 SmtUtils]: Spent 56.48s on a formula simplification. DAG size of input: 109 DAG size of output: 109 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-27 20:17:20,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:17:20,861 INFO L93 Difference]: Finished difference Result 198 states and 235 transitions. [2024-11-27 20:17:20,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-27 20:17:20,862 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 37 states have (on average 2.324324324324324) internal successors, (86), 37 states have internal predecessors, (86), 7 states have call successors, (19), 4 states have call predecessors, (19), 7 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) Word has length 69 [2024-11-27 20:17:20,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:17:20,864 INFO L225 Difference]: With dead ends: 198 [2024-11-27 20:17:20,864 INFO L226 Difference]: Without dead ends: 130 [2024-11-27 20:17:20,866 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 60.6s TimeCoverageRelationStatistics Valid=394, Invalid=4162, Unknown=0, NotChecked=0, Total=4556 [2024-11-27 20:17:20,866 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 131 mSDsluCounter, 1391 mSDsCounter, 0 mSdLazyCounter, 1347 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 1454 SdHoareTripleChecker+Invalid, 1416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:17:20,867 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 1454 Invalid, 1416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1347 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-27 20:17:20,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-27 20:17:20,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 108. [2024-11-27 20:17:20,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 78 states have (on average 1.1794871794871795) internal successors, (92), 80 states have internal predecessors, (92), 18 states have call successors, (18), 10 states have call predecessors, (18), 11 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2024-11-27 20:17:20,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 128 transitions. [2024-11-27 20:17:20,903 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 128 transitions. Word has length 69 [2024-11-27 20:17:20,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:17:20,905 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 128 transitions. [2024-11-27 20:17:20,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 37 states have (on average 2.324324324324324) internal successors, (86), 37 states have internal predecessors, (86), 7 states have call successors, (19), 4 states have call predecessors, (19), 7 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-27 20:17:20,905 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 128 transitions. [2024-11-27 20:17:20,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-27 20:17:20,906 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:17:20,906 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 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 20:17:20,922 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-27 20:17:21,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:17:21,107 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:17:21,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:17:21,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1490582509, now seen corresponding path program 4 times [2024-11-27 20:17:21,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:17:21,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563199624] [2024-11-27 20:17:21,108 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:17:21,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:17:21,289 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:17:21,289 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:17:21,826 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-27 20:17:21,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:17:21,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563199624] [2024-11-27 20:17:21,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563199624] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:17:21,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767107681] [2024-11-27 20:17:21,827 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:17:21,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:17:21,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:17:21,832 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:17:21,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 20:17:22,340 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:17:22,341 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:17:22,346 INFO L256 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-27 20:17:22,355 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:17:22,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-27 20:17:22,607 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 21 treesize of output 20 [2024-11-27 20:17:22,668 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:17:22,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 32 [2024-11-27 20:17:22,734 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:17:22,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 39 treesize of output 44 [2024-11-27 20:17:22,852 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:17:22,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 48 treesize of output 56 [2024-11-27 20:17:22,946 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:17:22,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 57 treesize of output 68 [2024-11-27 20:17:25,220 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 6 proven. 51 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 20:17:25,220 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:17:28,184 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 46 treesize of output 44 [2024-11-27 20:17:28,189 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 67 treesize of output 63 [2024-11-27 20:17:28,336 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 15 proven. 36 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 20:17:28,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767107681] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:17:28,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:17:28,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 25, 20] total 50 [2024-11-27 20:17:28,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977197824] [2024-11-27 20:17:28,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:17:28,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-27 20:17:28,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:17:28,339 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-27 20:17:28,340 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=2251, Unknown=0, NotChecked=0, Total=2450 [2024-11-27 20:17:28,341 INFO L87 Difference]: Start difference. First operand 108 states and 128 transitions. Second operand has 50 states, 48 states have (on average 2.1875) internal successors, (105), 47 states have internal predecessors, (105), 7 states have call successors, (19), 5 states have call predecessors, (19), 7 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-27 20:17:33,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:17:33,229 INFO L93 Difference]: Finished difference Result 194 states and 232 transitions. [2024-11-27 20:17:33,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-27 20:17:33,230 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 48 states have (on average 2.1875) internal successors, (105), 47 states have internal predecessors, (105), 7 states have call successors, (19), 5 states have call predecessors, (19), 7 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 73 [2024-11-27 20:17:33,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:17:33,232 INFO L225 Difference]: With dead ends: 194 [2024-11-27 20:17:33,232 INFO L226 Difference]: Without dead ends: 122 [2024-11-27 20:17:33,234 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1158 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=444, Invalid=5562, Unknown=0, NotChecked=0, Total=6006 [2024-11-27 20:17:33,235 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 171 mSDsluCounter, 1817 mSDsCounter, 0 mSdLazyCounter, 1613 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 1891 SdHoareTripleChecker+Invalid, 1713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:17:33,235 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 1891 Invalid, 1713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1613 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-27 20:17:33,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-27 20:17:33,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 112. [2024-11-27 20:17:33,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 82 states have (on average 1.1829268292682926) internal successors, (97), 84 states have internal predecessors, (97), 18 states have call successors, (18), 10 states have call predecessors, (18), 11 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2024-11-27 20:17:33,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 133 transitions. [2024-11-27 20:17:33,262 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 133 transitions. Word has length 73 [2024-11-27 20:17:33,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:17:33,263 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 133 transitions. [2024-11-27 20:17:33,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 48 states have (on average 2.1875) internal successors, (105), 47 states have internal predecessors, (105), 7 states have call successors, (19), 5 states have call predecessors, (19), 7 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-27 20:17:33,263 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 133 transitions. [2024-11-27 20:17:33,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-27 20:17:33,264 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:17:33,264 INFO L218 NwaCegarLoop]: trace histogram [7, 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 20:17:33,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-27 20:17:33,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-27 20:17:33,469 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:17:33,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:17:33,469 INFO L85 PathProgramCache]: Analyzing trace with hash 113537066, now seen corresponding path program 1 times [2024-11-27 20:17:33,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:17:33,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627645492] [2024-11-27 20:17:33,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:17:33,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:17:33,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:17:34,284 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-27 20:17:34,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:17:34,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627645492] [2024-11-27 20:17:34,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627645492] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:17:34,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357963592] [2024-11-27 20:17:34,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:17:34,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:17:34,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:17:34,290 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:17:34,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 20:17:34,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:17:34,827 INFO L256 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-27 20:17:34,832 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:17:35,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-27 20:17:35,124 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 21 treesize of output 20 [2024-11-27 20:17:35,188 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:17:35,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 32 [2024-11-27 20:17:35,292 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:17:35,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 39 treesize of output 44 [2024-11-27 20:17:35,395 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:17:35,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 48 treesize of output 56 [2024-11-27 20:17:35,494 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:17:35,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 57 treesize of output 68 [2024-11-27 20:17:35,635 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:17:35,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 66 treesize of output 80 [2024-11-27 20:17:37,304 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 37 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-27 20:17:37,305 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:17:40,281 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 52 treesize of output 50 [2024-11-27 20:17:40,288 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 88 treesize of output 84 [2024-11-27 20:17:40,534 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 22 proven. 17 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 20:17:40,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357963592] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:17:40,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:17:40,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 24, 18] total 48 [2024-11-27 20:17:40,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505850408] [2024-11-27 20:17:40,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:17:40,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-27 20:17:40,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:17:40,539 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-27 20:17:40,541 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=2034, Unknown=0, NotChecked=0, Total=2256 [2024-11-27 20:17:40,542 INFO L87 Difference]: Start difference. First operand 112 states and 133 transitions. Second operand has 48 states, 46 states have (on average 2.260869565217391) internal successors, (104), 45 states have internal predecessors, (104), 7 states have call successors, (21), 5 states have call predecessors, (21), 8 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2024-11-27 20:17:46,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:17:46,115 INFO L93 Difference]: Finished difference Result 194 states and 232 transitions. [2024-11-27 20:17:46,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-27 20:17:46,116 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 46 states have (on average 2.260869565217391) internal successors, (104), 45 states have internal predecessors, (104), 7 states have call successors, (21), 5 states have call predecessors, (21), 8 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 76 [2024-11-27 20:17:46,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:17:46,117 INFO L225 Difference]: With dead ends: 194 [2024-11-27 20:17:46,117 INFO L226 Difference]: Without dead ends: 119 [2024-11-27 20:17:46,122 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 874 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=470, Invalid=5080, Unknown=0, NotChecked=0, Total=5550 [2024-11-27 20:17:46,122 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 148 mSDsluCounter, 1439 mSDsCounter, 0 mSdLazyCounter, 1229 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 1510 SdHoareTripleChecker+Invalid, 1309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:17:46,123 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 1510 Invalid, 1309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1229 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-27 20:17:46,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-27 20:17:46,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 113. [2024-11-27 20:17:46,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 83 states have (on average 1.1686746987951808) internal successors, (97), 85 states have internal predecessors, (97), 18 states have call successors, (18), 10 states have call predecessors, (18), 11 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2024-11-27 20:17:46,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 133 transitions. [2024-11-27 20:17:46,167 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 133 transitions. Word has length 76 [2024-11-27 20:17:46,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:17:46,168 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 133 transitions. [2024-11-27 20:17:46,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 46 states have (on average 2.260869565217391) internal successors, (104), 45 states have internal predecessors, (104), 7 states have call successors, (21), 5 states have call predecessors, (21), 8 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2024-11-27 20:17:46,168 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 133 transitions. [2024-11-27 20:17:46,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-27 20:17:46,169 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:17:46,170 INFO L218 NwaCegarLoop]: trace histogram [8, 6, 6, 5, 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 20:17:46,183 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-27 20:17:46,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:17:46,370 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:17:46,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:17:46,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1250156159, now seen corresponding path program 5 times [2024-11-27 20:17:46,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:17:46,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925662135] [2024-11-27 20:17:46,371 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:17:46,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:17:46,671 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-27 20:17:46,672 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:17:47,839 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-27 20:17:47,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:17:47,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925662135] [2024-11-27 20:17:47,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925662135] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:17:47,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49071391] [2024-11-27 20:17:47,841 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:17:47,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:17:47,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:17:47,843 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:17:47,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 20:17:51,201 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-27 20:17:51,202 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:17:51,209 INFO L256 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-11-27 20:17:51,214 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:17:51,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-27 20:17:51,462 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 21 treesize of output 20 [2024-11-27 20:17:51,518 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:17:51,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 32 [2024-11-27 20:17:51,588 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:17:51,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 39 treesize of output 44 [2024-11-27 20:17:51,664 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:17:51,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 48 treesize of output 56 [2024-11-27 20:17:51,758 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:17:51,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 57 treesize of output 68 [2024-11-27 20:17:51,875 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:17:51,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 66 treesize of output 80 [2024-11-27 20:17:52,055 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:17:52,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 75 treesize of output 92 [2024-11-27 20:17:55,018 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 81 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 20:17:55,019 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:17:59,945 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 58 treesize of output 56 [2024-11-27 20:17:59,951 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 89 treesize of output 85 [2024-11-27 20:18:00,174 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 18 proven. 63 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 20:18:00,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49071391] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:18:00,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:18:00,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 28, 22] total 57 [2024-11-27 20:18:00,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964466383] [2024-11-27 20:18:00,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:18:00,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-27 20:18:00,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:18:00,177 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-27 20:18:00,177 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=2929, Unknown=0, NotChecked=0, Total=3192 [2024-11-27 20:18:00,178 INFO L87 Difference]: Start difference. First operand 113 states and 133 transitions. Second operand has 57 states, 55 states have (on average 2.1272727272727274) internal successors, (117), 54 states have internal predecessors, (117), 7 states have call successors, (19), 5 states have call predecessors, (19), 7 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-27 20:18:07,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:18:07,363 INFO L93 Difference]: Finished difference Result 200 states and 238 transitions. [2024-11-27 20:18:07,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-27 20:18:07,364 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 55 states have (on average 2.1272727272727274) internal successors, (117), 54 states have internal predecessors, (117), 7 states have call successors, (19), 5 states have call predecessors, (19), 7 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 78 [2024-11-27 20:18:07,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:18:07,366 INFO L225 Difference]: With dead ends: 200 [2024-11-27 20:18:07,366 INFO L226 Difference]: Without dead ends: 125 [2024-11-27 20:18:07,368 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1282 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=540, Invalid=7116, Unknown=0, NotChecked=0, Total=7656 [2024-11-27 20:18:07,370 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 164 mSDsluCounter, 1796 mSDsCounter, 0 mSdLazyCounter, 1865 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 1946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-27 20:18:07,371 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 1870 Invalid, 1946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1865 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-27 20:18:07,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-11-27 20:18:07,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 117. [2024-11-27 20:18:07,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 87 states have (on average 1.1724137931034482) internal successors, (102), 89 states have internal predecessors, (102), 18 states have call successors, (18), 10 states have call predecessors, (18), 11 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2024-11-27 20:18:07,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 138 transitions. [2024-11-27 20:18:07,425 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 138 transitions. Word has length 78 [2024-11-27 20:18:07,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:18:07,426 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 138 transitions. [2024-11-27 20:18:07,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 55 states have (on average 2.1272727272727274) internal successors, (117), 54 states have internal predecessors, (117), 7 states have call successors, (19), 5 states have call predecessors, (19), 7 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-27 20:18:07,426 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 138 transitions. [2024-11-27 20:18:07,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-27 20:18:07,427 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:18:07,427 INFO L218 NwaCegarLoop]: trace histogram [9, 4, 4, 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, 1] [2024-11-27 20:18:07,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-27 20:18:07,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-27 20:18:07,628 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:18:07,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:18:07,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1794755012, now seen corresponding path program 2 times [2024-11-27 20:18:07,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:18:07,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327661092] [2024-11-27 20:18:07,629 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:18:07,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:18:07,731 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:18:07,731 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:18:08,393 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-27 20:18:08,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:18:08,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327661092] [2024-11-27 20:18:08,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327661092] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:18:08,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:18:08,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:18:08,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116544572] [2024-11-27 20:18:08,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:18:08,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:18:08,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:18:08,397 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:18:08,397 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:18:08,398 INFO L87 Difference]: Start difference. First operand 117 states and 138 transitions. Second operand has 6 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-27 20:18:08,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:18:08,548 INFO L93 Difference]: Finished difference Result 158 states and 189 transitions. [2024-11-27 20:18:08,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:18:08,549 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 81 [2024-11-27 20:18:08,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:18:08,551 INFO L225 Difference]: With dead ends: 158 [2024-11-27 20:18:08,551 INFO L226 Difference]: Without dead ends: 117 [2024-11-27 20:18:08,551 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 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 20:18:08,552 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 0 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:18:08,552 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 368 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:18:08,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-27 20:18:08,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2024-11-27 20:18:08,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 87 states have (on average 1.160919540229885) internal successors, (101), 89 states have internal predecessors, (101), 18 states have call successors, (18), 10 states have call predecessors, (18), 11 states have return successors, (17), 17 states have call predecessors, (17), 16 states have call successors, (17) [2024-11-27 20:18:08,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 136 transitions. [2024-11-27 20:18:08,615 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 136 transitions. Word has length 81 [2024-11-27 20:18:08,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:18:08,615 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 136 transitions. [2024-11-27 20:18:08,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-27 20:18:08,615 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 136 transitions. [2024-11-27 20:18:08,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-27 20:18:08,616 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:18:08,616 INFO L218 NwaCegarLoop]: trace histogram [9, 4, 4, 4, 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, 1, 1] [2024-11-27 20:18:08,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-27 20:18:08,617 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:18:08,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:18:08,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1286777991, now seen corresponding path program 2 times [2024-11-27 20:18:08,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:18:08,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116169895] [2024-11-27 20:18:08,619 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:18:08,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:18:08,748 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:18:08,748 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:18:09,461 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-27 20:18:09,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:18:09,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116169895] [2024-11-27 20:18:09,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116169895] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:18:09,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074732579] [2024-11-27 20:18:09,462 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:18:09,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:18:09,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:18:09,465 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:18:09,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-27 20:18:09,923 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:18:09,923 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:18:09,927 INFO L256 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-27 20:18:09,929 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:18:10,298 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-27 20:18:10,298 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:18:10,764 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-27 20:18:10,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074732579] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:18:10,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:18:10,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 8] total 30 [2024-11-27 20:18:10,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641499734] [2024-11-27 20:18:10,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:18:10,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-27 20:18:10,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:18:10,767 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-27 20:18:10,767 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=751, Unknown=0, NotChecked=0, Total=870 [2024-11-27 20:18:10,767 INFO L87 Difference]: Start difference. First operand 117 states and 136 transitions. Second operand has 30 states, 30 states have (on average 3.2666666666666666) internal successors, (98), 30 states have internal predecessors, (98), 2 states have call successors, (12), 2 states have call predecessors, (12), 6 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 20:18:11,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:18:11,997 INFO L93 Difference]: Finished difference Result 216 states and 256 transitions. [2024-11-27 20:18:11,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-27 20:18:11,997 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.2666666666666666) internal successors, (98), 30 states have internal predecessors, (98), 2 states have call successors, (12), 2 states have call predecessors, (12), 6 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 83 [2024-11-27 20:18:11,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:18:11,999 INFO L225 Difference]: With dead ends: 216 [2024-11-27 20:18:12,000 INFO L226 Difference]: Without dead ends: 134 [2024-11-27 20:18:12,001 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=255, Invalid=1725, Unknown=0, NotChecked=0, Total=1980 [2024-11-27 20:18:12,002 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 35 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:18:12,002 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 860 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 20:18:12,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-27 20:18:12,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 128. [2024-11-27 20:18:12,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 98 states have (on average 1.153061224489796) internal successors, (113), 100 states have internal predecessors, (113), 18 states have call successors, (18), 10 states have call predecessors, (18), 11 states have return successors, (17), 17 states have call predecessors, (17), 16 states have call successors, (17) [2024-11-27 20:18:12,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 148 transitions. [2024-11-27 20:18:12,071 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 148 transitions. Word has length 83 [2024-11-27 20:18:12,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:18:12,072 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 148 transitions. [2024-11-27 20:18:12,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.2666666666666666) internal successors, (98), 30 states have internal predecessors, (98), 2 states have call successors, (12), 2 states have call predecessors, (12), 6 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 20:18:12,072 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 148 transitions. [2024-11-27 20:18:12,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-27 20:18:12,074 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:18:12,074 INFO L218 NwaCegarLoop]: trace histogram [10, 7, 7, 6, 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 20:18:12,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-27 20:18:12,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:18:12,275 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:18:12,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:18:12,276 INFO L85 PathProgramCache]: Analyzing trace with hash -2054197037, now seen corresponding path program 6 times [2024-11-27 20:18:12,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:18:12,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030177173] [2024-11-27 20:18:12,276 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:18:12,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:18:12,585 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-27 20:18:12,585 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:18:13,331 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-27 20:18:13,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:18:13,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030177173] [2024-11-27 20:18:13,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030177173] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:18:13,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867160827] [2024-11-27 20:18:13,333 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:18:13,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:18:13,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:18:13,335 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:18:13,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-27 20:18:19,106 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-27 20:18:19,106 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:18:19,113 INFO L256 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 110 conjuncts are in the unsatisfiable core [2024-11-27 20:18:19,119 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:18:19,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-27 20:18:19,390 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 21 treesize of output 20 [2024-11-27 20:18:19,461 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:18:19,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 32 [2024-11-27 20:18:19,528 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:18:19,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 39 treesize of output 44 [2024-11-27 20:18:19,603 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:18:19,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 48 treesize of output 56 [2024-11-27 20:18:19,700 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:18:19,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 57 treesize of output 68 [2024-11-27 20:18:19,803 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:18:19,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 66 treesize of output 80 [2024-11-27 20:18:19,923 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:18:19,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 75 treesize of output 92 [2024-11-27 20:18:20,061 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:18:20,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 84 treesize of output 104 [2024-11-27 20:18:20,204 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:18:20,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 93 treesize of output 116 [2024-11-27 20:18:24,478 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 6 proven. 118 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 20:18:24,478 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:18:34,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 68 [2024-11-27 20:18:34,288 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 111 treesize of output 107 [2024-11-27 20:18:34,511 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 45 proven. 73 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 20:18:34,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867160827] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:18:34,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:18:34,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 32, 27] total 68 [2024-11-27 20:18:34,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216161516] [2024-11-27 20:18:34,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:18:34,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-11-27 20:18:34,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:18:34,514 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-11-27 20:18:34,515 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=396, Invalid=4160, Unknown=0, NotChecked=0, Total=4556 [2024-11-27 20:18:34,516 INFO L87 Difference]: Start difference. First operand 128 states and 148 transitions. Second operand has 68 states, 65 states have (on average 1.9846153846153847) internal successors, (129), 64 states have internal predecessors, (129), 8 states have call successors, (19), 5 states have call predecessors, (19), 7 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-27 20:18:44,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:18:44,421 INFO L93 Difference]: Finished difference Result 223 states and 259 transitions. [2024-11-27 20:18:44,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-27 20:18:44,422 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 65 states have (on average 1.9846153846153847) internal successors, (129), 64 states have internal predecessors, (129), 8 states have call successors, (19), 5 states have call predecessors, (19), 7 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) Word has length 83 [2024-11-27 20:18:44,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:18:44,423 INFO L225 Difference]: With dead ends: 223 [2024-11-27 20:18:44,424 INFO L226 Difference]: Without dead ends: 135 [2024-11-27 20:18:44,427 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2359 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=803, Invalid=10539, Unknown=0, NotChecked=0, Total=11342 [2024-11-27 20:18:44,427 INFO L435 NwaCegarLoop]: 75 mSDtfsCounter, 166 mSDsluCounter, 1879 mSDsCounter, 0 mSdLazyCounter, 2213 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 1954 SdHoareTripleChecker+Invalid, 2293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-27 20:18:44,428 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 1954 Invalid, 2293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2213 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-27 20:18:44,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-27 20:18:44,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 129. [2024-11-27 20:18:44,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 99 states have (on average 1.1414141414141414) internal successors, (113), 101 states have internal predecessors, (113), 18 states have call successors, (18), 10 states have call predecessors, (18), 11 states have return successors, (17), 17 states have call predecessors, (17), 16 states have call successors, (17) [2024-11-27 20:18:44,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 148 transitions. [2024-11-27 20:18:44,476 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 148 transitions. Word has length 83 [2024-11-27 20:18:44,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:18:44,477 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 148 transitions. [2024-11-27 20:18:44,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 65 states have (on average 1.9846153846153847) internal successors, (129), 64 states have internal predecessors, (129), 8 states have call successors, (19), 5 states have call predecessors, (19), 7 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-27 20:18:44,477 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 148 transitions. [2024-11-27 20:18:44,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-27 20:18:44,479 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:18:44,479 INFO L218 NwaCegarLoop]: trace histogram [11, 8, 8, 7, 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 20:18:44,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-27 20:18:44,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-27 20:18:44,680 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:18:44,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:18:44,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1638561651, now seen corresponding path program 7 times [2024-11-27 20:18:44,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:18:44,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681724932] [2024-11-27 20:18:44,680 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:18:44,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:18:44,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:18:45,775 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-27 20:18:45,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:18:45,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681724932] [2024-11-27 20:18:45,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681724932] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:18:45,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478132523] [2024-11-27 20:18:45,776 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:18:45,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:18:45,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:18:45,778 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:18:45,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-27 20:18:46,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:18:46,625 INFO L256 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 103 conjuncts are in the unsatisfiable core [2024-11-27 20:18:46,631 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:18:46,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-27 20:18:46,909 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 21 treesize of output 20 [2024-11-27 20:18:46,971 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:18:46,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 32 [2024-11-27 20:18:47,051 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:18:47,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 39 treesize of output 44 [2024-11-27 20:18:47,138 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:18:47,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 48 treesize of output 56 [2024-11-27 20:18:47,243 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:18:47,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 57 treesize of output 68 [2024-11-27 20:18:47,366 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:18:47,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 66 treesize of output 80 [2024-11-27 20:18:47,502 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:18:47,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 75 treesize of output 92 [2024-11-27 20:18:47,669 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:18:47,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 84 treesize of output 104 [2024-11-27 20:18:47,864 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:18:47,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 93 treesize of output 116 [2024-11-27 20:18:48,059 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:18:48,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 102 treesize of output 128 [2024-11-27 20:18:48,518 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 6 proven. 66 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-27 20:18:48,518 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:18:57,747 WARN L286 SmtUtils]: Spent 6.70s on a formula simplification. DAG size of input: 137 DAG size of output: 133 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-27 20:19:07,756 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 28 treesize of output 26 [2024-11-27 20:19:07,762 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 36 treesize of output 32 [2024-11-27 20:19:07,964 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 148 refuted. 2 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 20:19:07,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478132523] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:19:07,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:19:07,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 22, 28] total 60 [2024-11-27 20:19:07,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626994670] [2024-11-27 20:19:07,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:19:07,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-27 20:19:07,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:19:07,966 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-27 20:19:07,967 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=441, Invalid=3097, Unknown=2, NotChecked=0, Total=3540 [2024-11-27 20:19:07,967 INFO L87 Difference]: Start difference. First operand 129 states and 148 transitions. Second operand has 60 states, 58 states have (on average 2.0) internal successors, (116), 58 states have internal predecessors, (116), 6 states have call successors, (19), 4 states have call predecessors, (19), 7 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-27 20:19:20,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:19:20,875 INFO L93 Difference]: Finished difference Result 225 states and 260 transitions. [2024-11-27 20:19:20,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-27 20:19:20,875 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 58 states have (on average 2.0) internal successors, (116), 58 states have internal predecessors, (116), 6 states have call successors, (19), 4 states have call predecessors, (19), 7 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 87 [2024-11-27 20:19:20,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:19:20,877 INFO L225 Difference]: With dead ends: 225 [2024-11-27 20:19:20,877 INFO L226 Difference]: Without dead ends: 137 [2024-11-27 20:19:20,878 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1056 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=823, Invalid=7731, Unknown=2, NotChecked=0, Total=8556 [2024-11-27 20:19:20,879 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 134 mSDsluCounter, 1786 mSDsCounter, 0 mSdLazyCounter, 2355 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 1844 SdHoareTripleChecker+Invalid, 2409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:19:20,880 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 1844 Invalid, 2409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2355 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2024-11-27 20:19:20,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-27 20:19:20,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 130. [2024-11-27 20:19:20,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 100 states have (on average 1.13) internal successors, (113), 102 states have internal predecessors, (113), 18 states have call successors, (18), 10 states have call predecessors, (18), 11 states have return successors, (17), 17 states have call predecessors, (17), 16 states have call successors, (17) [2024-11-27 20:19:20,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 148 transitions. [2024-11-27 20:19:20,922 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 148 transitions. Word has length 87 [2024-11-27 20:19:20,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:19:20,922 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 148 transitions. [2024-11-27 20:19:20,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 58 states have (on average 2.0) internal successors, (116), 58 states have internal predecessors, (116), 6 states have call successors, (19), 4 states have call predecessors, (19), 7 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-27 20:19:20,922 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 148 transitions. [2024-11-27 20:19:20,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-27 20:19:20,923 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:19:20,923 INFO L218 NwaCegarLoop]: trace histogram [12, 9, 9, 8, 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 20:19:20,935 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-27 20:19:21,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-27 20:19:21,124 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:19:21,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:19:21,124 INFO L85 PathProgramCache]: Analyzing trace with hash 831562707, now seen corresponding path program 8 times [2024-11-27 20:19:21,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:19:21,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499112861] [2024-11-27 20:19:21,125 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:19:21,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:19:21,224 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:19:21,224 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:19:22,177 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-27 20:19:22,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:19:22,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499112861] [2024-11-27 20:19:22,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499112861] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:19:22,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846160930] [2024-11-27 20:19:22,178 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:19:22,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:19:22,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:19:22,180 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:19:22,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-27 20:19:23,424 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:19:23,424 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:19:23,430 INFO L256 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 128 conjuncts are in the unsatisfiable core [2024-11-27 20:19:23,436 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:19:23,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-27 20:19:23,768 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 21 treesize of output 20 [2024-11-27 20:19:23,826 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:19:23,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 32 [2024-11-27 20:19:23,903 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:19:23,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 39 treesize of output 44 [2024-11-27 20:19:23,986 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:19:23,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 48 treesize of output 56 [2024-11-27 20:19:24,116 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:19:24,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 57 treesize of output 68 [2024-11-27 20:19:24,233 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:19:24,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 66 treesize of output 80 [2024-11-27 20:19:24,362 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:19:24,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 75 treesize of output 92 [2024-11-27 20:19:24,525 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:19:24,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 84 treesize of output 104 [2024-11-27 20:19:24,723 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:19:24,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 93 treesize of output 116 [2024-11-27 20:19:24,920 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:19:24,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 102 treesize of output 128 [2024-11-27 20:19:25,142 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:19:25,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 111 treesize of output 140 [2024-11-27 20:19:25,637 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 6 proven. 78 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-11-27 20:19:25,638 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:19:39,075 WARN L286 SmtUtils]: Spent 9.65s on a formula simplification. DAG size of input: 148 DAG size of output: 144 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-27 20:19:53,856 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 40 treesize of output 38 [2024-11-27 20:19:53,863 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 54 treesize of output 50 [2024-11-27 20:19:54,130 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 183 refuted. 3 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 20:19:54,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846160930] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:19:54,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:19:54,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 23, 32] total 66 [2024-11-27 20:19:54,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726885373] [2024-11-27 20:19:54,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:19:54,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-11-27 20:19:54,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:19:54,132 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-11-27 20:19:54,133 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=536, Invalid=3751, Unknown=3, NotChecked=0, Total=4290 [2024-11-27 20:19:54,133 INFO L87 Difference]: Start difference. First operand 130 states and 148 transitions. Second operand has 66 states, 63 states have (on average 1.9365079365079365) internal successors, (122), 63 states have internal predecessors, (122), 7 states have call successors, (19), 4 states have call predecessors, (19), 7 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-27 20:22:12,319 WARN L286 SmtUtils]: Spent 2.09m on a formula simplification. DAG size of input: 204 DAG size of output: 204 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-27 20:22:16,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:22:16,571 INFO L93 Difference]: Finished difference Result 231 states and 264 transitions. [2024-11-27 20:22:16,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-27 20:22:16,572 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 63 states have (on average 1.9365079365079365) internal successors, (122), 63 states have internal predecessors, (122), 7 states have call successors, (19), 4 states have call predecessors, (19), 7 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) Word has length 91 [2024-11-27 20:22:16,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:22:16,573 INFO L225 Difference]: With dead ends: 231 [2024-11-27 20:22:16,573 INFO L226 Difference]: Without dead ends: 138 [2024-11-27 20:22:16,575 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2082 ImplicationChecksByTransitivity, 150.6s TimeCoverageRelationStatistics Valid=1010, Invalid=10117, Unknown=3, NotChecked=0, Total=11130 [2024-11-27 20:22:16,576 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 162 mSDsluCounter, 1824 mSDsCounter, 0 mSdLazyCounter, 2717 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 1878 SdHoareTripleChecker+Invalid, 2790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 2717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:22:16,577 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 1878 Invalid, 2790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 2717 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2024-11-27 20:22:16,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-27 20:22:16,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 131. [2024-11-27 20:22:16,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 101 states have (on average 1.118811881188119) internal successors, (113), 103 states have internal predecessors, (113), 18 states have call successors, (18), 10 states have call predecessors, (18), 11 states have return successors, (17), 17 states have call predecessors, (17), 16 states have call successors, (17) [2024-11-27 20:22:16,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 148 transitions. [2024-11-27 20:22:16,636 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 148 transitions. Word has length 91 [2024-11-27 20:22:16,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:22:16,636 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 148 transitions. [2024-11-27 20:22:16,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 63 states have (on average 1.9365079365079365) internal successors, (122), 63 states have internal predecessors, (122), 7 states have call successors, (19), 4 states have call predecessors, (19), 7 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-27 20:22:16,636 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 148 transitions. [2024-11-27 20:22:16,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-27 20:22:16,637 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:22:16,638 INFO L218 NwaCegarLoop]: trace histogram [13, 10, 10, 9, 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 20:22:16,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-27 20:22:16,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-27 20:22:16,838 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:22:16,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:22:16,839 INFO L85 PathProgramCache]: Analyzing trace with hash -285126029, now seen corresponding path program 9 times [2024-11-27 20:22:16,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:22:16,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834112076] [2024-11-27 20:22:16,839 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:22:16,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:22:17,197 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-27 20:22:17,197 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:22:18,291 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-11-27 20:22:18,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:22:18,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834112076] [2024-11-27 20:22:18,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834112076] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:22:18,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001748428] [2024-11-27 20:22:18,292 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:22:18,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:22:18,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:22:18,295 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:22:18,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02873fb-5478-4ac0-a509-6e6ffdaca2f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-27 20:22:32,600 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-27 20:22:32,601 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:22:32,611 INFO L256 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 160 conjuncts are in the unsatisfiable core [2024-11-27 20:22:32,621 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:22:32,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:22:32,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:22:32,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 82 [2024-11-27 20:22:32,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:22:32,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:22:32,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 53 [2024-11-27 20:22:32,719 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 14 treesize of output 12 [2024-11-27 20:22:32,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:22:32,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 63 treesize of output 34 [2024-11-27 20:22:32,761 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 99 [2024-11-27 20:22:32,776 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 23 treesize of output 11 [2024-11-27 20:22:32,826 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 11 [2024-11-27 20:22:32,836 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 15 treesize of output 7 [2024-11-27 20:22:32,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:22:32,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 113 [2024-11-27 20:22:32,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:22:32,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 79 [2024-11-27 20:22:32,923 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 8 treesize of output 7 [2024-11-27 20:22:32,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:22:32,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 116 [2024-11-27 20:22:33,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:22:33,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 12 [2024-11-27 20:22:33,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:22:33,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:22:33,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:22:33,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 172 [2024-11-27 20:22:33,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 63 [2024-11-27 20:22:33,217 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 8 treesize of output 1 [2024-11-27 20:22:33,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:22:33,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 85 [2024-11-27 20:22:33,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:22:33,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 53 [2024-11-27 20:22:33,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 35 treesize of output 40 [2024-11-27 20:22:33,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 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 76 treesize of output 67 [2024-11-27 20:22:33,421 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 20:22:33,422 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 19 treesize of output 5 [2024-11-27 20:22:33,434 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 115 treesize of output 101 [2024-11-27 20:22:33,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:22:33,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 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 44 treesize of output 37 [2024-11-27 20:22:33,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 50 [2024-11-27 20:22:33,574 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 8 treesize of output 1 [2024-11-27 20:22:33,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 71 [2024-11-27 20:22:33,611 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 79 treesize of output 87 [2024-11-27 20:22:33,624 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 24 treesize of output 23 [2024-11-27 20:22:56,081 WARN L286 SmtUtils]: Spent 5.33s on a formula simplification that was a NOOP. DAG size: 344 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-27 20:27:59,883 WARN L286 SmtUtils]: Spent 4.36m on a formula simplification. DAG size of input: 2070 DAG size of output: 2066 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-27 20:27:59,884 INFO L349 Elim1Store]: treesize reduction 8, result has 99.8 percent of original size [2024-11-27 20:27:59,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 32 select indices, 32 select index equivalence classes, 0 disjoint index pairs (out of 496 index pairs), introduced 48 new quantified variables, introduced 496 case distinctions, treesize of input 7543 treesize of output 9937 [2024-11-27 20:28:04,505 INFO L224 Elim1Store]: Index analysis took 2464 ms