./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_begin_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_begin_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC --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 157f0d22bcc200e95b6696425fc806db58856d3eb89fc5de304f6d82594c0bb3 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:03:47,112 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:03:47,243 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-24 01:03:47,251 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:03:47,251 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:03:47,292 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:03:47,294 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:03:47,294 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:03:47,295 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:03:47,295 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:03:47,296 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:03:47,296 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:03:47,297 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:03:47,297 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:03:47,298 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:03:47,298 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:03:47,299 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:03:47,299 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:03:47,299 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:03:47,299 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:03:47,299 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:03:47,299 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:03:47,300 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:03:47,300 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:03:47,300 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:03:47,300 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:03:47,300 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:03:47,300 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:03:47,301 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:03:47,301 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:03:47,301 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:03:47,302 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:03:47,302 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:03:47,302 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:03:47,303 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:03:47,303 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:03:47,303 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:03:47,303 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:03:47,303 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:03:47,303 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:03:47,303 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:03:47,304 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:03:47,304 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:03:47,304 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:03:47,304 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:03:47,304 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_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC 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 -> 157f0d22bcc200e95b6696425fc806db58856d3eb89fc5de304f6d82594c0bb3 [2024-11-24 01:03:47,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:03:47,721 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:03:47,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:03:47,728 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:03:47,728 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:03:47,730 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/aws-c-common/aws_linked_list_begin_harness.i [2024-11-24 01:03:51,008 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/data/6f2f2011a/bed2e2090bd0428f958392191f15f57d/FLAG099a8916f [2024-11-24 01:03:51,670 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:03:51,674 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/sv-benchmarks/c/aws-c-common/aws_linked_list_begin_harness.i [2024-11-24 01:03:51,722 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/data/6f2f2011a/bed2e2090bd0428f958392191f15f57d/FLAG099a8916f [2024-11-24 01:03:51,751 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/data/6f2f2011a/bed2e2090bd0428f958392191f15f57d [2024-11-24 01:03:51,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:03:51,756 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:03:51,758 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:03:51,759 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:03:51,765 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:03:51,766 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:03:51" (1/1) ... [2024-11-24 01:03:51,767 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7665f988 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:03:51, skipping insertion in model container [2024-11-24 01:03:51,767 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:03:51" (1/1) ... [2024-11-24 01:03:51,873 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:03:52,221 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_3432c95c-b68d-4c0a-a938-4d5598fec21e/sv-benchmarks/c/aws-c-common/aws_linked_list_begin_harness.i[4495,4508] [2024-11-24 01:03:52,230 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_3432c95c-b68d-4c0a-a938-4d5598fec21e/sv-benchmarks/c/aws-c-common/aws_linked_list_begin_harness.i[4555,4568] [2024-11-24 01:03:53,418 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:03:53,420 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:03:53,420 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:03:53,422 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:03:53,423 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:03:53,447 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:03:53,448 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:03:53,451 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:03:53,455 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:03:53,458 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:03:53,460 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:03:53,461 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:03:53,461 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:03:54,264 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_3432c95c-b68d-4c0a-a938-4d5598fec21e/sv-benchmarks/c/aws-c-common/aws_linked_list_begin_harness.i[150472,150485] [2024-11-24 01:03:54,265 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:03:54,297 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:03:54,323 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_3432c95c-b68d-4c0a-a938-4d5598fec21e/sv-benchmarks/c/aws-c-common/aws_linked_list_begin_harness.i[4495,4508] [2024-11-24 01:03:54,324 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_3432c95c-b68d-4c0a-a938-4d5598fec21e/sv-benchmarks/c/aws-c-common/aws_linked_list_begin_harness.i[4555,4568] [2024-11-24 01:03:54,433 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:03:54,433 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:03:54,434 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:03:54,434 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:03:54,435 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:03:54,493 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:03:54,493 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:03:54,495 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:03:54,496 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:03:54,498 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:03:54,499 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:03:54,501 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:03:54,502 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:03:54,627 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_3432c95c-b68d-4c0a-a938-4d5598fec21e/sv-benchmarks/c/aws-c-common/aws_linked_list_begin_harness.i[150472,150485] [2024-11-24 01:03:54,628 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:03:54,867 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:03:54,868 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:03:54 WrapperNode [2024-11-24 01:03:54,868 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:03:54,869 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:03:54,870 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:03:54,870 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:03:54,877 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:03:54" (1/1) ... [2024-11-24 01:03:54,940 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:03:54" (1/1) ... [2024-11-24 01:03:54,976 INFO L138 Inliner]: procedures = 668, calls = 1039, calls flagged for inlining = 53, calls inlined = 6, statements flattened = 141 [2024-11-24 01:03:54,977 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:03:54,978 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:03:54,978 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:03:54,978 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:03:54,992 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:03:54" (1/1) ... [2024-11-24 01:03:54,993 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:03:54" (1/1) ... [2024-11-24 01:03:54,998 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:03:54" (1/1) ... [2024-11-24 01:03:55,026 INFO L175 MemorySlicer]: Split 24 memory accesses to 3 slices as follows [2, 5, 17]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 6 writes are split as follows [0, 0, 6]. [2024-11-24 01:03:55,026 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:03:54" (1/1) ... [2024-11-24 01:03:55,026 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:03:54" (1/1) ... [2024-11-24 01:03:55,043 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:03:54" (1/1) ... [2024-11-24 01:03:55,044 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:03:54" (1/1) ... [2024-11-24 01:03:55,048 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:03:54" (1/1) ... [2024-11-24 01:03:55,053 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:03:54" (1/1) ... [2024-11-24 01:03:55,055 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:03:54" (1/1) ... [2024-11-24 01:03:55,060 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:03:55,061 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:03:55,061 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:03:55,061 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:03:55,062 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:03:54" (1/1) ... [2024-11-24 01:03:55,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:03:55,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:03:55,113 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:03:55,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:03:55,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-24 01:03:55,152 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-24 01:03:55,152 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-24 01:03:55,154 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2024-11-24 01:03:55,154 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2024-11-24 01:03:55,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-24 01:03:55,154 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2024-11-24 01:03:55,154 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2024-11-24 01:03:55,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:03:55,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-24 01:03:55,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-24 01:03:55,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-24 01:03:55,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:03:55,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:03:55,155 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 01:03:55,155 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 01:03:55,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-24 01:03:55,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-24 01:03:55,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-24 01:03:55,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-24 01:03:55,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-24 01:03:55,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-24 01:03:55,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-24 01:03:55,159 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-24 01:03:55,159 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-24 01:03:55,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:03:55,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 01:03:55,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-24 01:03:55,490 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:03:55,493 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:03:55,918 INFO L? ?]: Removed 56 outVars from TransFormulas that were not future-live. [2024-11-24 01:03:55,918 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:03:55,931 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:03:55,931 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-24 01:03:55,932 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:03:55 BoogieIcfgContainer [2024-11-24 01:03:55,932 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:03:55,935 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:03:55,935 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:03:55,942 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:03:55,942 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:03:51" (1/3) ... [2024-11-24 01:03:55,943 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c3f407b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:03:55, skipping insertion in model container [2024-11-24 01:03:55,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:03:54" (2/3) ... [2024-11-24 01:03:55,944 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c3f407b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:03:55, skipping insertion in model container [2024-11-24 01:03:55,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:03:55" (3/3) ... [2024-11-24 01:03:55,945 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_linked_list_begin_harness.i [2024-11-24 01:03:55,965 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:03:55,968 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_linked_list_begin_harness.i that has 6 procedures, 69 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-24 01:03:56,045 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:03:56,063 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;@326eff83, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:03:56,064 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 01:03:56,071 INFO L276 IsEmpty]: Start isEmpty. Operand has 69 states, 49 states have (on average 1.346938775510204) internal successors, (66), 50 states have internal predecessors, (66), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-24 01:03:56,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-24 01:03:56,084 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:03:56,086 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:03:56,086 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:03:56,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:03:56,097 INFO L85 PathProgramCache]: Analyzing trace with hash 324213296, now seen corresponding path program 1 times [2024-11-24 01:03:56,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:03:56,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373771283] [2024-11-24 01:03:56,108 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:03:56,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:03:56,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:03:56,745 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-24 01:03:56,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:03:56,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373771283] [2024-11-24 01:03:56,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373771283] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:03:56,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103252193] [2024-11-24 01:03:56,754 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:03:56,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:03:56,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:03:56,763 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:03:56,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:03:57,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:03:57,139 INFO L256 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-24 01:03:57,148 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:03:57,170 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-24 01:03:57,175 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:03:57,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103252193] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:03:57,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:03:57,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-24 01:03:57,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327215567] [2024-11-24 01:03:57,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:03:57,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 01:03:57,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:03:57,212 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 01:03:57,213 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:03:57,216 INFO L87 Difference]: Start difference. First operand has 69 states, 49 states have (on average 1.346938775510204) internal successors, (66), 50 states have internal predecessors, (66), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-24 01:03:57,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:03:57,260 INFO L93 Difference]: Finished difference Result 130 states and 186 transitions. [2024-11-24 01:03:57,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 01:03:57,262 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2024-11-24 01:03:57,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:03:57,272 INFO L225 Difference]: With dead ends: 130 [2024-11-24 01:03:57,273 INFO L226 Difference]: Without dead ends: 64 [2024-11-24 01:03:57,279 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:03:57,284 INFO L435 NwaCegarLoop]: 88 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, 88 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 [2024-11-24 01:03:57,286 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:03:57,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-24 01:03:57,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-11-24 01:03:57,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 45 states have (on average 1.288888888888889) internal successors, (58), 46 states have internal predecessors, (58), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-24 01:03:57,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 83 transitions. [2024-11-24 01:03:57,347 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 83 transitions. Word has length 68 [2024-11-24 01:03:57,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:03:57,348 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 83 transitions. [2024-11-24 01:03:57,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-24 01:03:57,348 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 83 transitions. [2024-11-24 01:03:57,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-24 01:03:57,353 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:03:57,355 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:03:57,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-24 01:03:57,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-24 01:03:57,556 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:03:57,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:03:57,558 INFO L85 PathProgramCache]: Analyzing trace with hash -962094674, now seen corresponding path program 1 times [2024-11-24 01:03:57,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:03:57,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391328722] [2024-11-24 01:03:57,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:03:57,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:03:57,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:03:58,678 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-24 01:03:58,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:03:58,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391328722] [2024-11-24 01:03:58,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391328722] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:03:58,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464735533] [2024-11-24 01:03:58,680 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:03:58,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:03:58,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:03:58,683 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:03:58,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 01:03:58,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:03:58,986 INFO L256 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-24 01:03:58,997 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:03:59,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2024-11-24 01:03:59,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2024-11-24 01:03:59,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:03:59,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:03:59,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 35 [2024-11-24 01:03:59,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:03:59,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:03:59,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:03:59,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 25 [2024-11-24 01:04:02,405 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-24 01:04:02,407 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:04:02,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464735533] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:04:02,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:04:02,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2024-11-24 01:04:02,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862370126] [2024-11-24 01:04:02,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:04:02,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 01:04:02,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:04:02,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 01:04:02,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-24 01:04:02,411 INFO L87 Difference]: Start difference. First operand 64 states and 83 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-24 01:04:03,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:04:03,543 INFO L93 Difference]: Finished difference Result 174 states and 234 transitions. [2024-11-24 01:04:03,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 01:04:03,544 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 68 [2024-11-24 01:04:03,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:04:03,547 INFO L225 Difference]: With dead ends: 174 [2024-11-24 01:04:03,548 INFO L226 Difference]: Without dead ends: 122 [2024-11-24 01:04:03,549 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 53 SyntacticMatches, 8 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-11-24 01:04:03,550 INFO L435 NwaCegarLoop]: 61 mSDtfsCounter, 54 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-24 01:04:03,550 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 446 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-24 01:04:03,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-24 01:04:03,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 117. [2024-11-24 01:04:03,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 83 states have (on average 1.3132530120481927) internal successors, (109), 85 states have internal predecessors, (109), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-24 01:04:03,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 155 transitions. [2024-11-24 01:04:03,579 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 155 transitions. Word has length 68 [2024-11-24 01:04:03,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:04:03,580 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 155 transitions. [2024-11-24 01:04:03,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-24 01:04:03,580 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 155 transitions. [2024-11-24 01:04:03,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-24 01:04:03,582 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:04:03,583 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:04:03,595 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 01:04:03,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-24 01:04:03,785 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:04:03,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:04:03,786 INFO L85 PathProgramCache]: Analyzing trace with hash 536177768, now seen corresponding path program 1 times [2024-11-24 01:04:03,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:04:03,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276942619] [2024-11-24 01:04:03,786 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:04:03,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:04:03,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:04:04,356 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-24 01:04:04,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:04:04,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276942619] [2024-11-24 01:04:04,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276942619] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:04:04,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167411089] [2024-11-24 01:04:04,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:04:04,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:04:04,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:04:04,360 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:04:04,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 01:04:04,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:04:04,574 INFO L256 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-24 01:04:04,580 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:04:04,768 INFO L349 Elim1Store]: treesize reduction 66, result has 39.4 percent of original size [2024-11-24 01:04:04,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 76 treesize of output 128 [2024-11-24 01:04:04,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2024-11-24 01:04:04,817 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-24 01:04:04,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2024-11-24 01:04:04,904 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-24 01:04:04,906 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 41 treesize of output 13 [2024-11-24 01:04:04,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-24 01:04:09,047 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7|) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset_BEFORE_CALL_7| Int)) (= |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7| (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7|) (+ |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset_BEFORE_CALL_7| 24)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7|) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset_BEFORE_CALL_7| Int)) (let ((.cse2 (+ |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset_BEFORE_CALL_7| 24))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7|) .cse2))) (and (<= |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7| .cse0) (exists ((v_DerPreprocessor_1 (Array Int Int))) (let ((.cse1 (select |c_#memory_$Pointer$#2.base| .cse0))) (= .cse1 (select (store (store |c_#memory_$Pointer$#2.base| .cse0 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7| (store .cse1 .cse2 .cse0)) .cse0))))))))))) is different from true [2024-11-24 01:04:09,612 WARN L873 $PredicateComparison]: unable to prove that (and (or (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7|) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset_BEFORE_CALL_7| Int)) (= |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7| (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7|) (+ |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset_BEFORE_CALL_7| 24)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7|) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset_BEFORE_CALL_7| Int)) (let ((.cse2 (+ |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset_BEFORE_CALL_7| 24))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7|) .cse2))) (and (<= |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7| .cse0) (exists ((v_DerPreprocessor_1 (Array Int Int))) (let ((.cse1 (select |c_#memory_$Pointer$#2.base| .cse0))) (= .cse1 (select (store (store |c_#memory_$Pointer$#2.base| .cse0 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7| (store .cse1 .cse2 .cse0)) .cse0))))))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_8| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_8|) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset_BEFORE_CALL_8| Int)) (= |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_8| (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_8|) (+ |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset_BEFORE_CALL_8| 24)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_8| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset_BEFORE_CALL_8| Int)) (let ((.cse5 (+ |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset_BEFORE_CALL_8| 24))) (let ((.cse3 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_8|) .cse5))) (and (<= |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_8| .cse3) (exists ((v_DerPreprocessor_1 (Array Int Int))) (let ((.cse4 (select |c_#memory_$Pointer$#2.base| .cse3))) (= .cse4 (select (store (store |c_#memory_$Pointer$#2.base| .cse3 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_8| (store .cse4 .cse5 .cse3)) .cse3)))))))) (<= 2 |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_8|))))) is different from true [2024-11-24 01:04:09,879 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse8 (+ |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset| 24))) (let ((.cse3 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base|) .cse8))) (and (or (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7|) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset_BEFORE_CALL_7| Int)) (= |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7| (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7|) (+ |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset_BEFORE_CALL_7| 24)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7|) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset_BEFORE_CALL_7| Int)) (let ((.cse2 (+ |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset_BEFORE_CALL_7| 24))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7|) .cse2))) (and (<= |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7| .cse0) (exists ((v_DerPreprocessor_1 (Array Int Int))) (let ((.cse1 (select |c_#memory_$Pointer$#2.base| .cse0))) (= .cse1 (select (store (store |c_#memory_$Pointer$#2.base| .cse0 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7| (store .cse1 .cse2 .cse0)) .cse0))))))))))) (<= 2 |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base|) (<= |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base| .cse3) (or (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_8| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_8|) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset_BEFORE_CALL_8| Int)) (= |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_8| (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_8|) (+ |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset_BEFORE_CALL_8| 24)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_8| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset_BEFORE_CALL_8| Int)) (let ((.cse6 (+ |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset_BEFORE_CALL_8| 24))) (let ((.cse4 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_8|) .cse6))) (and (<= |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_8| .cse4) (exists ((v_DerPreprocessor_1 (Array Int Int))) (let ((.cse5 (select |c_#memory_$Pointer$#2.base| .cse4))) (= .cse5 (select (store (store |c_#memory_$Pointer$#2.base| .cse4 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_8| (store .cse5 .cse6 .cse4)) .cse4)))))))) (<= 2 |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_8|)))) (or (= |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base| .cse3) (exists ((v_DerPreprocessor_1 (Array Int Int))) (let ((.cse7 (select |c_#memory_$Pointer$#2.base| .cse3))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse3 v_DerPreprocessor_1) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base| (store .cse7 .cse8 .cse3)) .cse3) .cse7))))))) is different from true [2024-11-24 01:04:14,271 WARN L873 $PredicateComparison]: unable to prove that (and (or (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7|) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset_BEFORE_CALL_7| Int)) (= |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7| (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7|) (+ |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset_BEFORE_CALL_7| 24)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7|) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset_BEFORE_CALL_7| Int)) (let ((.cse2 (+ |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset_BEFORE_CALL_7| 24))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7|) .cse2))) (and (<= |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7| .cse0) (exists ((v_DerPreprocessor_1 (Array Int Int))) (let ((.cse1 (select |c_#memory_$Pointer$#2.base| .cse0))) (= .cse1 (select (store (store |c_#memory_$Pointer$#2.base| .cse0 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7| (store .cse1 .cse2 .cse0)) .cse0))))))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_4| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_begin_~list#1.offset_BEFORE_CALL_4| Int)) (= (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_4|) (+ |v_ULTIMATE.start_aws_linked_list_begin_~list#1.offset_BEFORE_CALL_4| 24)) |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_4|)) (<= 2 |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_4|))) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_4| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_4|) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_~list#1.offset_BEFORE_CALL_4| Int)) (let ((.cse5 (+ |v_ULTIMATE.start_aws_linked_list_begin_~list#1.offset_BEFORE_CALL_4| 24))) (let ((.cse3 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_4|) .cse5))) (and (<= |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_4| .cse3) (exists ((v_DerPreprocessor_1 (Array Int Int))) (let ((.cse4 (select |c_#memory_$Pointer$#2.base| .cse3))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse3 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_4| (store .cse4 .cse5 .cse3)) .cse3) .cse4)))))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_8| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_8|) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset_BEFORE_CALL_8| Int)) (= |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_8| (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_8|) (+ |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset_BEFORE_CALL_8| 24)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_8| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset_BEFORE_CALL_8| Int)) (let ((.cse8 (+ |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset_BEFORE_CALL_8| 24))) (let ((.cse6 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_8|) .cse8))) (and (<= |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_8| .cse6) (exists ((v_DerPreprocessor_1 (Array Int Int))) (let ((.cse7 (select |c_#memory_$Pointer$#2.base| .cse6))) (= .cse7 (select (store (store |c_#memory_$Pointer$#2.base| .cse6 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_8| (store .cse7 .cse8 .cse6)) .cse6)))))))) (<= 2 |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_8|))))) is different from true [2024-11-24 01:04:18,020 WARN L873 $PredicateComparison]: unable to prove that (and (or (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7|) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset_BEFORE_CALL_7| Int)) (= |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7| (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7|) (+ |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset_BEFORE_CALL_7| 24)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7|) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset_BEFORE_CALL_7| Int)) (let ((.cse2 (+ |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset_BEFORE_CALL_7| 24))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7|) .cse2))) (and (<= |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7| .cse0) (exists ((v_DerPreprocessor_1 (Array Int Int))) (let ((.cse1 (select |c_#memory_$Pointer$#2.base| .cse0))) (= .cse1 (select (store (store |c_#memory_$Pointer$#2.base| .cse0 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7| (store .cse1 .cse2 .cse0)) .cse0))))))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_4| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_begin_~list#1.offset_BEFORE_CALL_4| Int)) (= (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_4|) (+ |v_ULTIMATE.start_aws_linked_list_begin_~list#1.offset_BEFORE_CALL_4| 24)) |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_4|)) (<= 2 |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_4|))) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_4| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_4|) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_~list#1.offset_BEFORE_CALL_4| Int)) (let ((.cse5 (+ |v_ULTIMATE.start_aws_linked_list_begin_~list#1.offset_BEFORE_CALL_4| 24))) (let ((.cse3 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_4|) .cse5))) (and (<= |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_4| .cse3) (exists ((v_DerPreprocessor_1 (Array Int Int))) (let ((.cse4 (select |c_#memory_$Pointer$#2.base| .cse3))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse3 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_4| (store .cse4 .cse5 .cse3)) .cse3) .cse4)))))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_5| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_begin_~list#1.offset_BEFORE_CALL_5| Int)) (= (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_5|) (+ |v_ULTIMATE.start_aws_linked_list_begin_~list#1.offset_BEFORE_CALL_5| 24)) |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_5|)) (<= 2 |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_5|))) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_5| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_5|) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_~list#1.offset_BEFORE_CALL_5| Int)) (let ((.cse8 (+ |v_ULTIMATE.start_aws_linked_list_begin_~list#1.offset_BEFORE_CALL_5| 24))) (let ((.cse6 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_5|) .cse8))) (and (<= |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_5| .cse6) (exists ((v_DerPreprocessor_1 (Array Int Int))) (let ((.cse7 (select |c_#memory_$Pointer$#2.base| .cse6))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse6 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_5| (store .cse7 .cse8 .cse6)) .cse6) .cse7)))))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_8| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_8|) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset_BEFORE_CALL_8| Int)) (= |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_8| (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_8|) (+ |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset_BEFORE_CALL_8| 24)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_8| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset_BEFORE_CALL_8| Int)) (let ((.cse11 (+ |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset_BEFORE_CALL_8| 24))) (let ((.cse9 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_8|) .cse11))) (and (<= |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_8| .cse9) (exists ((v_DerPreprocessor_1 (Array Int Int))) (let ((.cse10 (select |c_#memory_$Pointer$#2.base| .cse9))) (= .cse10 (select (store (store |c_#memory_$Pointer$#2.base| .cse9 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_8| (store .cse10 .cse11 .cse9)) .cse9)))))))) (<= 2 |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_8|))))) is different from true [2024-11-24 01:04:23,646 WARN L873 $PredicateComparison]: unable to prove that (and (or (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7|) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset_BEFORE_CALL_7| Int)) (= |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7| (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7|) (+ |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset_BEFORE_CALL_7| 24)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7|) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset_BEFORE_CALL_7| Int)) (let ((.cse2 (+ |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset_BEFORE_CALL_7| 24))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7|) .cse2))) (and (<= |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7| .cse0) (exists ((v_DerPreprocessor_1 (Array Int Int))) (let ((.cse1 (select |c_#memory_$Pointer$#2.base| .cse0))) (= .cse1 (select (store (store |c_#memory_$Pointer$#2.base| .cse0 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_7| (store .cse1 .cse2 .cse0)) .cse0))))))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_4| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_begin_~list#1.offset_BEFORE_CALL_4| Int)) (= (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_4|) (+ |v_ULTIMATE.start_aws_linked_list_begin_~list#1.offset_BEFORE_CALL_4| 24)) |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_4|)) (<= 2 |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_4|))) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_4| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_4|) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_~list#1.offset_BEFORE_CALL_4| Int)) (let ((.cse5 (+ |v_ULTIMATE.start_aws_linked_list_begin_~list#1.offset_BEFORE_CALL_4| 24))) (let ((.cse3 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_4|) .cse5))) (and (<= |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_4| .cse3) (exists ((v_DerPreprocessor_1 (Array Int Int))) (let ((.cse4 (select |c_#memory_$Pointer$#2.base| .cse3))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse3 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_4| (store .cse4 .cse5 .cse3)) .cse3) .cse4)))))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_5| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_begin_~list#1.offset_BEFORE_CALL_5| Int)) (= (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_5|) (+ |v_ULTIMATE.start_aws_linked_list_begin_~list#1.offset_BEFORE_CALL_5| 24)) |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_5|)) (<= 2 |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_5|))) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_5| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_5|) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_~list#1.offset_BEFORE_CALL_5| Int)) (let ((.cse8 (+ |v_ULTIMATE.start_aws_linked_list_begin_~list#1.offset_BEFORE_CALL_5| 24))) (let ((.cse6 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_5|) .cse8))) (and (<= |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_5| .cse6) (exists ((v_DerPreprocessor_1 (Array Int Int))) (let ((.cse7 (select |c_#memory_$Pointer$#2.base| .cse6))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse6 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_5| (store .cse7 .cse8 .cse6)) .cse6) .cse7)))))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_6| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_begin_~list#1.offset_BEFORE_CALL_6| Int)) (let ((.cse11 (+ |v_ULTIMATE.start_aws_linked_list_begin_~list#1.offset_BEFORE_CALL_6| 24))) (let ((.cse9 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_6|) .cse11))) (and (<= |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_6| .cse9) (exists ((v_DerPreprocessor_1 (Array Int Int))) (let ((.cse10 (select |c_#memory_$Pointer$#2.base| .cse9))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse9 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_6| (store .cse10 .cse11 .cse9)) .cse9) .cse10))))))) (<= 2 |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_6|))) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_6| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_begin_~list#1.offset_BEFORE_CALL_6| Int)) (= |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_6| (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_6|) (+ |v_ULTIMATE.start_aws_linked_list_begin_~list#1.offset_BEFORE_CALL_6| 24)))) (<= 2 |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_6|)))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_8| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_8|) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset_BEFORE_CALL_8| Int)) (= |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_8| (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_8|) (+ |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset_BEFORE_CALL_8| 24)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_8| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset_BEFORE_CALL_8| Int)) (let ((.cse14 (+ |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset_BEFORE_CALL_8| 24))) (let ((.cse12 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_8|) .cse14))) (and (<= |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_8| .cse12) (exists ((v_DerPreprocessor_1 (Array Int Int))) (let ((.cse13 (select |c_#memory_$Pointer$#2.base| .cse12))) (= .cse13 (select (store (store |c_#memory_$Pointer$#2.base| .cse12 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_8| (store .cse13 .cse14 .cse12)) .cse12)))))))) (<= 2 |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_8|))))) is different from true [2024-11-24 01:04:26,686 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 37 not checked. [2024-11-24 01:04:26,687 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:04:27,434 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:04:27,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 318 treesize of output 310 [2024-11-24 01:04:27,447 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 162 treesize of output 146 [2024-11-24 01:04:27,525 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 129 treesize of output 117 [2024-11-24 01:04:28,067 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-24 01:04:28,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167411089] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-24 01:04:28,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-24 01:04:28,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [6, 20] total 33 [2024-11-24 01:04:28,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413690070] [2024-11-24 01:04:28,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:04:28,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:04:28,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:04:28,069 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:04:28,070 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=609, Unknown=28, NotChecked=330, Total=1056 [2024-11-24 01:04:28,070 INFO L87 Difference]: Start difference. First operand 117 states and 155 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-24 01:04:29,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:04:29,334 INFO L93 Difference]: Finished difference Result 197 states and 277 transitions. [2024-11-24 01:04:29,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:04:29,335 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 68 [2024-11-24 01:04:29,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:04:29,338 INFO L225 Difference]: With dead ends: 197 [2024-11-24 01:04:29,338 INFO L226 Difference]: Without dead ends: 136 [2024-11-24 01:04:29,341 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 19.5s TimeCoverageRelationStatistics Valid=135, Invalid=1048, Unknown=31, NotChecked=426, Total=1640 [2024-11-24 01:04:29,343 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 156 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:04:29,344 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 421 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 01:04:29,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-24 01:04:29,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 119. [2024-11-24 01:04:29,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 85 states have (on average 1.3058823529411765) internal successors, (111), 87 states have internal predecessors, (111), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-24 01:04:29,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 157 transitions. [2024-11-24 01:04:29,390 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 157 transitions. Word has length 68 [2024-11-24 01:04:29,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:04:29,390 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 157 transitions. [2024-11-24 01:04:29,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-24 01:04:29,390 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 157 transitions. [2024-11-24 01:04:29,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-24 01:04:29,392 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:04:29,396 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:04:29,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-24 01:04:29,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:04:29,597 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:04:29,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:04:29,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1561950370, now seen corresponding path program 1 times [2024-11-24 01:04:29,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:04:29,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933580956] [2024-11-24 01:04:29,598 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:04:29,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:04:29,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:04:30,174 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-24 01:04:30,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:04:30,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933580956] [2024-11-24 01:04:30,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933580956] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:04:30,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476508725] [2024-11-24 01:04:30,175 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:04:30,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:04:30,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:04:30,180 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:04:30,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 01:04:30,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:04:30,413 INFO L256 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-24 01:04:30,424 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:04:30,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2024-11-24 01:04:30,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2024-11-24 01:04:30,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:04:30,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:04:30,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 35 [2024-11-24 01:04:30,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:04:30,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:04:30,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:04:30,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 25 [2024-11-24 01:04:32,615 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-24 01:04:32,616 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:04:32,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476508725] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:04:32,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:04:32,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2024-11-24 01:04:32,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228608096] [2024-11-24 01:04:32,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:04:32,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:04:32,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:04:32,617 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:04:32,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-11-24 01:04:32,617 INFO L87 Difference]: Start difference. First operand 119 states and 157 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-24 01:04:34,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:04:34,023 INFO L93 Difference]: Finished difference Result 194 states and 264 transitions. [2024-11-24 01:04:34,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-24 01:04:34,024 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 68 [2024-11-24 01:04:34,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:04:34,026 INFO L225 Difference]: With dead ends: 194 [2024-11-24 01:04:34,026 INFO L226 Difference]: Without dead ends: 126 [2024-11-24 01:04:34,027 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 52 SyntacticMatches, 8 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2024-11-24 01:04:34,028 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 67 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:04:34,028 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 595 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-24 01:04:34,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-24 01:04:34,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 121. [2024-11-24 01:04:34,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 87 states have (on average 1.2988505747126438) internal successors, (113), 89 states have internal predecessors, (113), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-24 01:04:34,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 159 transitions. [2024-11-24 01:04:34,050 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 159 transitions. Word has length 68 [2024-11-24 01:04:34,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:04:34,051 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 159 transitions. [2024-11-24 01:04:34,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-24 01:04:34,051 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 159 transitions. [2024-11-24 01:04:34,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-24 01:04:34,053 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:04:34,054 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:04:34,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-24 01:04:34,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:04:34,258 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:04:34,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:04:34,259 INFO L85 PathProgramCache]: Analyzing trace with hash -513057188, now seen corresponding path program 1 times [2024-11-24 01:04:34,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:04:34,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736332015] [2024-11-24 01:04:34,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:04:34,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:04:34,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:04:35,211 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-24 01:04:35,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:04:35,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736332015] [2024-11-24 01:04:35,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736332015] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:04:35,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501076948] [2024-11-24 01:04:35,211 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:04:35,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:04:35,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:04:35,215 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:04:35,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 01:04:35,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:04:35,462 INFO L256 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-24 01:04:35,466 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:04:35,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-24 01:04:37,022 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-24 01:04:37,023 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:04:37,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501076948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:04:37,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:04:37,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [9] total 19 [2024-11-24 01:04:37,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946198352] [2024-11-24 01:04:37,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:04:37,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 01:04:37,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:04:37,024 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 01:04:37,025 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2024-11-24 01:04:37,025 INFO L87 Difference]: Start difference. First operand 121 states and 159 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-24 01:04:41,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:04:45,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:04:49,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:04:53,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:04:57,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:04:58,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:04:58,133 INFO L93 Difference]: Finished difference Result 202 states and 273 transitions. [2024-11-24 01:04:58,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-24 01:04:58,137 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 68 [2024-11-24 01:04:58,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:04:58,140 INFO L225 Difference]: With dead ends: 202 [2024-11-24 01:04:58,140 INFO L226 Difference]: Without dead ends: 128 [2024-11-24 01:04:58,141 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 52 SyntacticMatches, 8 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=127, Invalid=685, Unknown=0, NotChecked=0, Total=812 [2024-11-24 01:04:58,142 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 238 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 64 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.7s IncrementalHoareTripleChecker+Time [2024-11-24 01:04:58,143 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 391 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 272 Invalid, 5 Unknown, 0 Unchecked, 20.7s Time] [2024-11-24 01:04:58,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-24 01:04:58,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 123. [2024-11-24 01:04:58,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 89 states have (on average 1.2921348314606742) internal successors, (115), 91 states have internal predecessors, (115), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-24 01:04:58,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 161 transitions. [2024-11-24 01:04:58,167 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 161 transitions. Word has length 68 [2024-11-24 01:04:58,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:04:58,168 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 161 transitions. [2024-11-24 01:04:58,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-24 01:04:58,168 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 161 transitions. [2024-11-24 01:04:58,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-24 01:04:58,170 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:04:58,170 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:04:58,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-24 01:04:58,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:04:58,372 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:04:58,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:04:58,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1730495082, now seen corresponding path program 1 times [2024-11-24 01:04:58,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:04:58,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121348172] [2024-11-24 01:04:58,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:04:58,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:04:58,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:04:58,706 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-24 01:04:58,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:04:58,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121348172] [2024-11-24 01:04:58,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121348172] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:04:58,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365143938] [2024-11-24 01:04:58,707 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:04:58,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:04:58,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:04:58,712 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:04:58,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 01:04:58,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:04:58,884 INFO L256 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 01:04:58,886 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:04:58,986 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-24 01:04:58,987 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:04:58,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365143938] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:04:58,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:04:58,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-24 01:04:58,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058385501] [2024-11-24 01:04:58,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:04:58,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:04:58,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:04:58,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:04:58,989 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:04:58,989 INFO L87 Difference]: Start difference. First operand 123 states and 161 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-24 01:04:59,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:04:59,173 INFO L93 Difference]: Finished difference Result 258 states and 349 transitions. [2024-11-24 01:04:59,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:04:59,174 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2024-11-24 01:04:59,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:04:59,176 INFO L225 Difference]: With dead ends: 258 [2024-11-24 01:04:59,176 INFO L226 Difference]: Without dead ends: 153 [2024-11-24 01:04:59,177 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:04:59,178 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 111 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:04:59,178 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 217 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:04:59,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-11-24 01:04:59,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2024-11-24 01:04:59,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 115 states have (on average 1.3304347826086957) internal successors, (153), 119 states have internal predecessors, (153), 26 states have call successors, (26), 9 states have call predecessors, (26), 11 states have return successors, (28), 24 states have call predecessors, (28), 24 states have call successors, (28) [2024-11-24 01:04:59,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 207 transitions. [2024-11-24 01:04:59,206 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 207 transitions. Word has length 68 [2024-11-24 01:04:59,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:04:59,206 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 207 transitions. [2024-11-24 01:04:59,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-24 01:04:59,206 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 207 transitions. [2024-11-24 01:04:59,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-24 01:04:59,209 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:04:59,209 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:04:59,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-24 01:04:59,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:04:59,410 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:04:59,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:04:59,411 INFO L85 PathProgramCache]: Analyzing trace with hash -46341782, now seen corresponding path program 1 times [2024-11-24 01:04:59,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:04:59,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951761249] [2024-11-24 01:04:59,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:04:59,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:04:59,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:04:59,834 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-24 01:04:59,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:04:59,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951761249] [2024-11-24 01:04:59,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951761249] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:04:59,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052458025] [2024-11-24 01:04:59,835 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:04:59,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:04:59,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:04:59,838 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:04:59,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 01:05:00,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:05:00,094 INFO L256 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-24 01:05:00,098 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:05:00,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2024-11-24 01:05:00,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2024-11-24 01:05:00,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:05:00,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:05:00,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 40 [2024-11-24 01:05:00,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:05:00,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 20 [2024-11-24 01:05:00,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:05:00,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2024-11-24 01:05:00,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:05:00,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-24 01:05:00,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:05:00,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:05:00,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 42 [2024-11-24 01:05:00,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 25 [2024-11-24 01:05:00,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:05:00,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:05:00,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 35 [2024-11-24 01:05:00,459 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 24 treesize of output 13 [2024-11-24 01:05:01,665 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 01:05:01,666 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:05:02,158 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 24)) (.cse2 (+ |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset| 16))) (and (forall ((|ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| Int) (v_ArrVal_517 (Array Int Int))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_517))) (store .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 |ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset|))) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base|) .cse2) 0)) (forall ((v_ArrVal_519 (Array Int Int))) (= (select (select (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_519))) (store .cse3 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse3 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|))) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base|) .cse2) 0)))) is different from false [2024-11-24 01:05:02,225 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 24)) (.cse2 (+ |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset| 16))) (and (forall ((|v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_17| Int)) (or (< |c_#StackHeapBarrier| (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_17| 1)) (forall ((v_ArrVal_519 (Array Int Int)) (v_ArrVal_515 Int)) (= (select (select (let ((.cse0 (store (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_515)) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_17| v_ArrVal_519))) (store .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_17|))) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base|) .cse2) 0)))) (forall ((|v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_17| Int)) (or (< |c_#StackHeapBarrier| (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_17| 1)) (forall ((v_ArrVal_511 Int) (v_ArrVal_517 (Array Int Int)) (v_subst_1 Int)) (= (select (select (let ((.cse3 (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store (select |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_511)) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_17| v_ArrVal_517))) (store .cse3 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse3 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_subst_1))) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base|) .cse2) 0)))))) is different from false [2024-11-24 01:05:02,278 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-24 01:05:02,279 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-24 01:05:02,417 INFO L349 Elim1Store]: treesize reduction 86, result has 45.2 percent of original size [2024-11-24 01:05:02,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 297 treesize of output 284 [2024-11-24 01:05:02,437 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-24 01:05:02,438 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-24 01:05:02,561 INFO L349 Elim1Store]: treesize reduction 86, result has 45.2 percent of original size [2024-11-24 01:05:02,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 201 treesize of output 230 [2024-11-24 01:05:02,590 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:05:02,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 260 treesize of output 258 [2024-11-24 01:05:02,610 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 217 treesize of output 205 [2024-11-24 01:05:02,639 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:05:02,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 296 treesize of output 296 [2024-11-24 01:05:02,660 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 263 treesize of output 251 [2024-11-24 01:05:02,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-11-24 01:05:03,808 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:05:03,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 86 treesize of output 88 [2024-11-24 01:05:03,892 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:05:03,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 33 [2024-11-24 01:05:03,990 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 25 trivial. 1 not checked. [2024-11-24 01:05:03,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052458025] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:05:03,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:05:03,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11, 10] total 23 [2024-11-24 01:05:03,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62905961] [2024-11-24 01:05:03,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:05:03,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-24 01:05:03,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:05:03,995 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-24 01:05:03,995 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=364, Unknown=2, NotChecked=78, Total=506 [2024-11-24 01:05:03,996 INFO L87 Difference]: Start difference. First operand 153 states and 207 transitions. Second operand has 23 states, 20 states have (on average 4.9) internal successors, (98), 22 states have internal predecessors, (98), 9 states have call successors, (20), 3 states have call predecessors, (20), 7 states have return successors, (19), 7 states have call predecessors, (19), 9 states have call successors, (19) [2024-11-24 01:05:05,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:05:05,786 INFO L93 Difference]: Finished difference Result 239 states and 329 transitions. [2024-11-24 01:05:05,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-24 01:05:05,786 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 4.9) internal successors, (98), 22 states have internal predecessors, (98), 9 states have call successors, (20), 3 states have call predecessors, (20), 7 states have return successors, (19), 7 states have call predecessors, (19), 9 states have call successors, (19) Word has length 70 [2024-11-24 01:05:05,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:05:05,788 INFO L225 Difference]: With dead ends: 239 [2024-11-24 01:05:05,788 INFO L226 Difference]: Without dead ends: 168 [2024-11-24 01:05:05,789 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 120 SyntacticMatches, 5 SemanticMatches, 32 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=131, Invalid=867, Unknown=2, NotChecked=122, Total=1122 [2024-11-24 01:05:05,790 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 69 mSDsluCounter, 1268 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 1379 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 277 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:05:05,790 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 1379 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 845 Invalid, 0 Unknown, 277 Unchecked, 1.3s Time] [2024-11-24 01:05:05,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-24 01:05:05,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 161. [2024-11-24 01:05:05,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 121 states have (on average 1.3140495867768596) internal successors, (159), 126 states have internal predecessors, (159), 26 states have call successors, (26), 10 states have call predecessors, (26), 13 states have return successors, (31), 24 states have call predecessors, (31), 24 states have call successors, (31) [2024-11-24 01:05:05,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 216 transitions. [2024-11-24 01:05:05,821 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 216 transitions. Word has length 70 [2024-11-24 01:05:05,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:05:05,822 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 216 transitions. [2024-11-24 01:05:05,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 4.9) internal successors, (98), 22 states have internal predecessors, (98), 9 states have call successors, (20), 3 states have call predecessors, (20), 7 states have return successors, (19), 7 states have call predecessors, (19), 9 states have call successors, (19) [2024-11-24 01:05:05,822 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 216 transitions. [2024-11-24 01:05:05,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-24 01:05:05,823 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:05:05,823 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:05:05,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-24 01:05:06,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-24 01:05:06,024 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:05:06,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:05:06,024 INFO L85 PathProgramCache]: Analyzing trace with hash -2039781894, now seen corresponding path program 1 times [2024-11-24 01:05:06,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:05:06,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827786193] [2024-11-24 01:05:06,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:05:06,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:05:06,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:05:06,278 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-24 01:05:06,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:05:06,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827786193] [2024-11-24 01:05:06,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827786193] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:05:06,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186262885] [2024-11-24 01:05:06,279 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:05:06,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:05:06,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:05:06,282 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:05:06,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 01:05:06,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:05:06,494 INFO L256 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-24 01:05:06,496 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:05:06,616 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-24 01:05:06,617 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:05:06,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186262885] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:05:06,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:05:06,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-24 01:05:06,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836941882] [2024-11-24 01:05:06,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:05:06,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:05:06,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:05:06,619 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:05:06,619 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:05:06,620 INFO L87 Difference]: Start difference. First operand 161 states and 216 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-24 01:05:06,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:05:06,919 INFO L93 Difference]: Finished difference Result 324 states and 440 transitions. [2024-11-24 01:05:06,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 01:05:06,920 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2024-11-24 01:05:06,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:05:06,922 INFO L225 Difference]: With dead ends: 324 [2024-11-24 01:05:06,922 INFO L226 Difference]: Without dead ends: 185 [2024-11-24 01:05:06,923 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-11-24 01:05:06,926 INFO L435 NwaCegarLoop]: 60 mSDtfsCounter, 95 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:05:06,927 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 258 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:05:06,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-11-24 01:05:06,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 161. [2024-11-24 01:05:06,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 121 states have (on average 1.3140495867768596) internal successors, (159), 126 states have internal predecessors, (159), 26 states have call successors, (26), 10 states have call predecessors, (26), 13 states have return successors, (31), 24 states have call predecessors, (31), 24 states have call successors, (31) [2024-11-24 01:05:06,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 216 transitions. [2024-11-24 01:05:06,966 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 216 transitions. Word has length 70 [2024-11-24 01:05:06,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:05:06,966 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 216 transitions. [2024-11-24 01:05:06,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-24 01:05:06,966 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 216 transitions. [2024-11-24 01:05:06,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-24 01:05:06,968 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:05:06,968 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:05:06,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-24 01:05:07,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:05:07,172 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:05:07,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:05:07,173 INFO L85 PathProgramCache]: Analyzing trace with hash 733534024, now seen corresponding path program 1 times [2024-11-24 01:05:07,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:05:07,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054728012] [2024-11-24 01:05:07,173 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:05:07,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:05:07,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:05:07,447 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-24 01:05:07,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:05:07,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054728012] [2024-11-24 01:05:07,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054728012] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:05:07,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644542423] [2024-11-24 01:05:07,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:05:07,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:05:07,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:05:07,451 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:05:07,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-24 01:05:07,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:05:07,693 INFO L256 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-24 01:05:07,695 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:05:07,839 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-24 01:05:07,839 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:05:07,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644542423] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:05:07,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:05:07,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2024-11-24 01:05:07,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38189097] [2024-11-24 01:05:07,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:05:07,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 01:05:07,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:05:07,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 01:05:07,840 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-11-24 01:05:07,841 INFO L87 Difference]: Start difference. First operand 161 states and 216 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-24 01:05:08,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:05:08,223 INFO L93 Difference]: Finished difference Result 350 states and 482 transitions. [2024-11-24 01:05:08,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 01:05:08,224 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2024-11-24 01:05:08,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:05:08,226 INFO L225 Difference]: With dead ends: 350 [2024-11-24 01:05:08,226 INFO L226 Difference]: Without dead ends: 211 [2024-11-24 01:05:08,227 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2024-11-24 01:05:08,228 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 110 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:05:08,228 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 302 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:05:08,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-11-24 01:05:08,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 163. [2024-11-24 01:05:08,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 123 states have (on average 1.3252032520325203) internal successors, (163), 128 states have internal predecessors, (163), 26 states have call successors, (26), 10 states have call predecessors, (26), 13 states have return successors, (31), 24 states have call predecessors, (31), 24 states have call successors, (31) [2024-11-24 01:05:08,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 220 transitions. [2024-11-24 01:05:08,262 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 220 transitions. Word has length 72 [2024-11-24 01:05:08,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:05:08,262 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 220 transitions. [2024-11-24 01:05:08,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-24 01:05:08,263 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 220 transitions. [2024-11-24 01:05:08,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-24 01:05:08,264 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:05:08,264 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:05:08,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-24 01:05:08,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-24 01:05:08,468 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:05:08,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:05:08,469 INFO L85 PathProgramCache]: Analyzing trace with hash -281593581, now seen corresponding path program 1 times [2024-11-24 01:05:08,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:05:08,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606509816] [2024-11-24 01:05:08,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:05:08,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:05:08,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:05:08,737 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-24 01:05:08,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:05:08,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606509816] [2024-11-24 01:05:08,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606509816] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:05:08,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738189500] [2024-11-24 01:05:08,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:05:08,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:05:08,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:05:08,740 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:05:08,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-24 01:05:08,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:05:08,954 INFO L256 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-24 01:05:08,956 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:05:08,980 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-24 01:05:08,980 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:05:08,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738189500] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:05:08,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:05:08,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-24 01:05:08,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044655181] [2024-11-24 01:05:08,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:05:08,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:05:08,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:05:08,982 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:05:08,982 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:05:08,982 INFO L87 Difference]: Start difference. First operand 163 states and 220 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-24 01:05:09,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:05:09,048 INFO L93 Difference]: Finished difference Result 322 states and 458 transitions. [2024-11-24 01:05:09,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:05:09,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 73 [2024-11-24 01:05:09,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:05:09,051 INFO L225 Difference]: With dead ends: 322 [2024-11-24 01:05:09,052 INFO L226 Difference]: Without dead ends: 181 [2024-11-24 01:05:09,054 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:05:09,055 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 2 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:05:09,055 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 154 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:05:09,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-24 01:05:09,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 169. [2024-11-24 01:05:09,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 129 states have (on average 1.3255813953488371) internal successors, (171), 134 states have internal predecessors, (171), 26 states have call successors, (26), 10 states have call predecessors, (26), 13 states have return successors, (31), 24 states have call predecessors, (31), 24 states have call successors, (31) [2024-11-24 01:05:09,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 228 transitions. [2024-11-24 01:05:09,109 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 228 transitions. Word has length 73 [2024-11-24 01:05:09,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:05:09,109 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 228 transitions. [2024-11-24 01:05:09,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-24 01:05:09,110 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 228 transitions. [2024-11-24 01:05:09,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-24 01:05:09,111 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:05:09,111 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:05:09,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-24 01:05:09,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-24 01:05:09,316 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:05:09,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:05:09,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1966799637, now seen corresponding path program 1 times [2024-11-24 01:05:09,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:05:09,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353573312] [2024-11-24 01:05:09,317 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:05:09,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:05:09,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:05:09,678 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-24 01:05:09,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:05:09,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353573312] [2024-11-24 01:05:09,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353573312] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:05:09,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983545108] [2024-11-24 01:05:09,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:05:09,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:05:09,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:05:09,682 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:05:09,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-24 01:05:09,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:05:09,923 INFO L256 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-24 01:05:09,926 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:05:10,079 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-24 01:05:10,080 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:05:10,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983545108] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:05:10,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:05:10,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2024-11-24 01:05:10,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665164192] [2024-11-24 01:05:10,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:05:10,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:05:10,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:05:10,082 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:05:10,082 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-11-24 01:05:10,082 INFO L87 Difference]: Start difference. First operand 169 states and 228 transitions. Second operand has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-24 01:05:10,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:05:10,310 INFO L93 Difference]: Finished difference Result 318 states and 427 transitions. [2024-11-24 01:05:10,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 01:05:10,311 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 81 [2024-11-24 01:05:10,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:05:10,313 INFO L225 Difference]: With dead ends: 318 [2024-11-24 01:05:10,313 INFO L226 Difference]: Without dead ends: 135 [2024-11-24 01:05:10,314 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2024-11-24 01:05:10,315 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 116 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:05:10,316 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 283 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:05:10,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-24 01:05:10,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2024-11-24 01:05:10,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 97 states have (on average 1.2268041237113403) internal successors, (119), 102 states have internal predecessors, (119), 24 states have call successors, (24), 10 states have call predecessors, (24), 13 states have return successors, (29), 22 states have call predecessors, (29), 22 states have call successors, (29) [2024-11-24 01:05:10,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 172 transitions. [2024-11-24 01:05:10,348 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 172 transitions. Word has length 81 [2024-11-24 01:05:10,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:05:10,349 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 172 transitions. [2024-11-24 01:05:10,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-24 01:05:10,349 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 172 transitions. [2024-11-24 01:05:10,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-24 01:05:10,350 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:05:10,350 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:05:10,364 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-24 01:05:10,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-24 01:05:10,551 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:05:10,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:05:10,551 INFO L85 PathProgramCache]: Analyzing trace with hash 193167077, now seen corresponding path program 1 times [2024-11-24 01:05:10,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:05:10,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283577469] [2024-11-24 01:05:10,552 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:05:10,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:05:10,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:05:10,888 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-24 01:05:10,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:05:10,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283577469] [2024-11-24 01:05:10,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283577469] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:05:10,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884697626] [2024-11-24 01:05:10,889 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:05:10,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:05:10,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:05:10,892 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:05:10,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-24 01:05:11,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:05:11,174 INFO L256 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-11-24 01:05:11,180 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:05:11,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-24 01:05:11,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:05:11,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-24 01:05:11,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-24 01:05:11,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:05:11,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-24 01:05:11,502 INFO L349 Elim1Store]: treesize reduction 38, result has 22.4 percent of original size [2024-11-24 01:05:11,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 99 treesize of output 105 [2024-11-24 01:05:11,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:05:11,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:05:11,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 25 [2024-11-24 01:05:11,519 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 18 treesize of output 11 [2024-11-24 01:05:11,531 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 60 treesize of output 50 [2024-11-24 01:05:11,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:05:11,545 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 55 treesize of output 20 [2024-11-24 01:05:12,987 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-24 01:05:12,987 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:05:14,001 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:05:14,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 165 treesize of output 126 [2024-11-24 01:05:14,014 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:05:14,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 161 treesize of output 154 [2024-11-24 01:05:14,049 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:05:14,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 853 treesize of output 743 [2024-11-24 01:05:14,070 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 553 treesize of output 537 [2024-11-24 01:05:14,123 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:05:14,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 668 treesize of output 682 [2024-11-24 01:05:14,146 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 675 treesize of output 667 [2024-11-24 01:05:14,186 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:05:14,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 709 treesize of output 685 [2024-11-24 01:05:14,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2024-11-24 01:05:15,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-24 01:05:15,136 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:05:15,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 281 treesize of output 281 [2024-11-24 01:05:15,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:05:15,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-24 01:05:15,914 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 24 treesize of output 20 [2024-11-24 01:05:15,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:05:15,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-11-24 01:05:15,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-11-24 01:05:15,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:05:15,984 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 12 treesize of output 10 [2024-11-24 01:05:16,128 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:05:16,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 192 treesize of output 164 [2024-11-24 01:05:16,980 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-24 01:05:16,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884697626] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:05:16,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:05:16,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 15, 14] total 31 [2024-11-24 01:05:16,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388668341] [2024-11-24 01:05:16,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:05:16,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-24 01:05:16,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:05:16,983 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-24 01:05:16,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=821, Unknown=2, NotChecked=0, Total=930 [2024-11-24 01:05:16,984 INFO L87 Difference]: Start difference. First operand 135 states and 172 transitions. Second operand has 31 states, 30 states have (on average 3.8) internal successors, (114), 30 states have internal predecessors, (114), 10 states have call successors, (24), 3 states have call predecessors, (24), 6 states have return successors, (23), 10 states have call predecessors, (23), 10 states have call successors, (23) [2024-11-24 01:05:20,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:05:20,584 INFO L93 Difference]: Finished difference Result 317 states and 434 transitions. [2024-11-24 01:05:20,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-24 01:05:20,585 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 3.8) internal successors, (114), 30 states have internal predecessors, (114), 10 states have call successors, (24), 3 states have call predecessors, (24), 6 states have return successors, (23), 10 states have call predecessors, (23), 10 states have call successors, (23) Word has length 83 [2024-11-24 01:05:20,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:05:20,587 INFO L225 Difference]: With dead ends: 317 [2024-11-24 01:05:20,587 INFO L226 Difference]: Without dead ends: 220 [2024-11-24 01:05:20,589 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 136 SyntacticMatches, 8 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=325, Invalid=2325, Unknown=2, NotChecked=0, Total=2652 [2024-11-24 01:05:20,590 INFO L435 NwaCegarLoop]: 96 mSDtfsCounter, 151 mSDsluCounter, 1709 mSDsCounter, 0 mSdLazyCounter, 1349 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 1805 SdHoareTripleChecker+Invalid, 1406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:05:20,590 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 1805 Invalid, 1406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1349 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-24 01:05:20,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-11-24 01:05:20,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 139. [2024-11-24 01:05:20,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 101 states have (on average 1.2277227722772277) internal successors, (124), 106 states have internal predecessors, (124), 24 states have call successors, (24), 10 states have call predecessors, (24), 13 states have return successors, (28), 22 states have call predecessors, (28), 22 states have call successors, (28) [2024-11-24 01:05:20,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 176 transitions. [2024-11-24 01:05:20,627 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 176 transitions. Word has length 83 [2024-11-24 01:05:20,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:05:20,629 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 176 transitions. [2024-11-24 01:05:20,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 3.8) internal successors, (114), 30 states have internal predecessors, (114), 10 states have call successors, (24), 3 states have call predecessors, (24), 6 states have return successors, (23), 10 states have call predecessors, (23), 10 states have call successors, (23) [2024-11-24 01:05:20,629 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 176 transitions. [2024-11-24 01:05:20,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-24 01:05:20,631 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:05:20,632 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:05:20,643 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-24 01:05:20,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:05:20,836 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:05:20,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:05:20,837 INFO L85 PathProgramCache]: Analyzing trace with hash -2017520511, now seen corresponding path program 1 times [2024-11-24 01:05:20,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:05:20,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514796816] [2024-11-24 01:05:20,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:05:20,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:05:20,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:05:21,271 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-24 01:05:21,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:05:21,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514796816] [2024-11-24 01:05:21,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514796816] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:05:21,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358782132] [2024-11-24 01:05:21,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:05:21,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:05:21,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:05:21,275 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:05:21,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-24 01:05:21,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:05:21,530 INFO L256 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-24 01:05:21,533 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:05:21,690 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-24 01:05:21,690 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:05:21,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358782132] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:05:21,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:05:21,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2024-11-24 01:05:21,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934399540] [2024-11-24 01:05:21,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:05:21,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 01:05:21,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:05:21,693 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 01:05:21,693 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2024-11-24 01:05:21,693 INFO L87 Difference]: Start difference. First operand 139 states and 176 transitions. Second operand has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 8 states have internal predecessors, (65), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-24 01:05:21,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:05:21,995 INFO L93 Difference]: Finished difference Result 260 states and 326 transitions. [2024-11-24 01:05:21,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 01:05:21,995 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 8 states have internal predecessors, (65), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 85 [2024-11-24 01:05:21,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:05:21,997 INFO L225 Difference]: With dead ends: 260 [2024-11-24 01:05:21,997 INFO L226 Difference]: Without dead ends: 143 [2024-11-24 01:05:21,998 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2024-11-24 01:05:21,999 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 92 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:05:21,999 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 303 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:05:22,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-24 01:05:22,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 139. [2024-11-24 01:05:22,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 101 states have (on average 1.2079207920792079) internal successors, (122), 106 states have internal predecessors, (122), 24 states have call successors, (24), 10 states have call predecessors, (24), 13 states have return successors, (28), 22 states have call predecessors, (28), 22 states have call successors, (28) [2024-11-24 01:05:22,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 174 transitions. [2024-11-24 01:05:22,028 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 174 transitions. Word has length 85 [2024-11-24 01:05:22,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:05:22,028 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 174 transitions. [2024-11-24 01:05:22,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 8 states have internal predecessors, (65), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-24 01:05:22,029 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 174 transitions. [2024-11-24 01:05:22,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-24 01:05:22,030 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:05:22,030 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:05:22,041 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-24 01:05:22,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-24 01:05:22,231 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:05:22,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:05:22,231 INFO L85 PathProgramCache]: Analyzing trace with hash -372383345, now seen corresponding path program 1 times [2024-11-24 01:05:22,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:05:22,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961352358] [2024-11-24 01:05:22,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:05:22,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:05:22,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:05:22,612 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-24 01:05:22,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:05:22,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961352358] [2024-11-24 01:05:22,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961352358] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:05:22,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666520970] [2024-11-24 01:05:22,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:05:22,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:05:22,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:05:22,615 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:05:22,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-24 01:05:22,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:05:22,888 INFO L256 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-24 01:05:22,890 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:05:23,064 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-24 01:05:23,065 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:05:23,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666520970] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:05:23,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:05:23,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2024-11-24 01:05:23,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693328110] [2024-11-24 01:05:23,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:05:23,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 01:05:23,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:05:23,066 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 01:05:23,066 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2024-11-24 01:05:23,068 INFO L87 Difference]: Start difference. First operand 139 states and 174 transitions. Second operand has 9 states, 8 states have (on average 8.375) internal successors, (67), 9 states have internal predecessors, (67), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-24 01:05:23,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:05:23,531 INFO L93 Difference]: Finished difference Result 260 states and 324 transitions. [2024-11-24 01:05:23,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 01:05:23,532 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.375) internal successors, (67), 9 states have internal predecessors, (67), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 87 [2024-11-24 01:05:23,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:05:23,533 INFO L225 Difference]: With dead ends: 260 [2024-11-24 01:05:23,534 INFO L226 Difference]: Without dead ends: 141 [2024-11-24 01:05:23,535 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2024-11-24 01:05:23,535 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 108 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:05:23,536 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 336 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 01:05:23,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-24 01:05:23,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 131. [2024-11-24 01:05:23,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 95 states have (on average 1.2) internal successors, (114), 98 states have internal predecessors, (114), 24 states have call successors, (24), 10 states have call predecessors, (24), 11 states have return successors, (24), 22 states have call predecessors, (24), 22 states have call successors, (24) [2024-11-24 01:05:23,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 162 transitions. [2024-11-24 01:05:23,564 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 162 transitions. Word has length 87 [2024-11-24 01:05:23,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:05:23,565 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 162 transitions. [2024-11-24 01:05:23,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.375) internal successors, (67), 9 states have internal predecessors, (67), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-24 01:05:23,565 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 162 transitions. [2024-11-24 01:05:23,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-24 01:05:23,566 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:05:23,566 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:05:23,578 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-24 01:05:23,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-24 01:05:23,767 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:05:23,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:05:23,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1259385538, now seen corresponding path program 1 times [2024-11-24 01:05:23,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:05:23,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402626193] [2024-11-24 01:05:23,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:05:23,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:05:23,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:05:24,275 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-24 01:05:24,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:05:24,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402626193] [2024-11-24 01:05:24,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402626193] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:05:24,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371663821] [2024-11-24 01:05:24,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:05:24,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:05:24,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:05:24,280 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:05:24,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-24 01:05:24,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:05:24,601 INFO L256 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-24 01:05:24,606 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:05:24,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2024-11-24 01:05:24,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2024-11-24 01:05:24,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:05:24,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:05:24,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 40 [2024-11-24 01:05:24,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:05:24,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2024-11-24 01:05:24,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:05:24,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-24 01:05:24,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:05:24,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 20 [2024-11-24 01:05:24,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:05:24,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:05:24,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 35 [2024-11-24 01:05:24,899 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 24 treesize of output 13 [2024-11-24 01:05:24,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:05:24,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:05:24,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 42 [2024-11-24 01:05:24,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 25 [2024-11-24 01:05:26,522 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 01:05:26,522 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:05:26,909 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 24)) (.cse2 (+ |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset| 8))) (and (forall ((v_ArrVal_1197 (Array Int Int))) (= 0 (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_1197))) (store .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|))) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base|) .cse2))) (forall ((|ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| Int) (v_ArrVal_1199 (Array Int Int))) (= (select (select (let ((.cse3 (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_1199))) (store .cse3 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse3 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 |ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset|))) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base|) .cse2) 0)))) is different from false [2024-11-24 01:05:26,947 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 24)) (.cse2 (+ |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset| 8))) (and (forall ((|v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_29| Int)) (or (< |c_#StackHeapBarrier| (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_29| 1)) (forall ((v_ArrVal_1199 (Array Int Int)) (v_subst_3 Int) (v_ArrVal_1191 Int)) (= (select (select (let ((.cse0 (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store (select |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_1191)) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_29| v_ArrVal_1199))) (store .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_subst_3))) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base|) .cse2) 0)))) (forall ((|v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_29| Int)) (or (forall ((v_ArrVal_1194 Int) (v_ArrVal_1197 (Array Int Int))) (= (select (select (let ((.cse3 (store (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_1194)) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_29| v_ArrVal_1197))) (store .cse3 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse3 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_29|))) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base|) .cse2) 0)) (< |c_#StackHeapBarrier| (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_29| 1)))))) is different from false [2024-11-24 01:05:26,973 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-24 01:05:26,974 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-24 01:05:27,057 INFO L349 Elim1Store]: treesize reduction 88, result has 44.7 percent of original size [2024-11-24 01:05:27,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 297 treesize of output 284 [2024-11-24 01:05:27,069 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-24 01:05:27,070 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-24 01:05:27,152 INFO L349 Elim1Store]: treesize reduction 88, result has 44.7 percent of original size [2024-11-24 01:05:27,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 201 treesize of output 230 [2024-11-24 01:05:27,170 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:05:27,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 260 treesize of output 258 [2024-11-24 01:05:27,183 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 217 treesize of output 205 [2024-11-24 01:05:27,202 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:05:27,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 296 treesize of output 296 [2024-11-24 01:05:27,214 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 263 treesize of output 251 [2024-11-24 01:05:27,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-11-24 01:05:28,085 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:05:28,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 95 treesize of output 97 [2024-11-24 01:05:28,136 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:05:28,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 38 [2024-11-24 01:05:28,200 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 1 not checked. [2024-11-24 01:05:28,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371663821] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:05:28,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:05:28,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 11] total 26 [2024-11-24 01:05:28,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919332684] [2024-11-24 01:05:28,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:05:28,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-24 01:05:28,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:05:28,202 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-24 01:05:28,203 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=486, Unknown=2, NotChecked=90, Total=650 [2024-11-24 01:05:28,203 INFO L87 Difference]: Start difference. First operand 131 states and 162 transitions. Second operand has 26 states, 25 states have (on average 4.52) internal successors, (113), 25 states have internal predecessors, (113), 10 states have call successors, (24), 3 states have call predecessors, (24), 6 states have return successors, (23), 10 states have call predecessors, (23), 10 states have call successors, (23) [2024-11-24 01:05:30,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:05:30,240 INFO L93 Difference]: Finished difference Result 263 states and 339 transitions. [2024-11-24 01:05:30,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-24 01:05:30,242 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 4.52) internal successors, (113), 25 states have internal predecessors, (113), 10 states have call successors, (24), 3 states have call predecessors, (24), 6 states have return successors, (23), 10 states have call predecessors, (23), 10 states have call successors, (23) Word has length 96 [2024-11-24 01:05:30,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:05:30,244 INFO L225 Difference]: With dead ends: 263 [2024-11-24 01:05:30,244 INFO L226 Difference]: Without dead ends: 140 [2024-11-24 01:05:30,245 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 168 SyntacticMatches, 9 SemanticMatches, 43 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=223, Invalid=1589, Unknown=2, NotChecked=166, Total=1980 [2024-11-24 01:05:30,248 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 111 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 1197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 317 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:05:30,249 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 1098 Invalid, 1197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 831 Invalid, 0 Unknown, 317 Unchecked, 1.1s Time] [2024-11-24 01:05:30,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-24 01:05:30,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 137. [2024-11-24 01:05:30,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 99 states have (on average 1.1818181818181819) internal successors, (117), 104 states have internal predecessors, (117), 24 states have call successors, (24), 10 states have call predecessors, (24), 13 states have return successors, (30), 22 states have call predecessors, (30), 22 states have call successors, (30) [2024-11-24 01:05:30,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 171 transitions. [2024-11-24 01:05:30,298 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 171 transitions. Word has length 96 [2024-11-24 01:05:30,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:05:30,299 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 171 transitions. [2024-11-24 01:05:30,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 4.52) internal successors, (113), 25 states have internal predecessors, (113), 10 states have call successors, (24), 3 states have call predecessors, (24), 6 states have return successors, (23), 10 states have call predecessors, (23), 10 states have call successors, (23) [2024-11-24 01:05:30,299 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 171 transitions. [2024-11-24 01:05:30,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-24 01:05:30,301 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:05:30,302 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:05:30,315 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-24 01:05:30,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:05:30,503 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:05:30,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:05:30,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1297922164, now seen corresponding path program 1 times [2024-11-24 01:05:30,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:05:30,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490653418] [2024-11-24 01:05:30,503 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:05:30,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:05:30,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:05:30,630 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-24 01:05:30,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:05:30,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490653418] [2024-11-24 01:05:30,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490653418] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:05:30,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:05:30,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:05:30,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182812107] [2024-11-24 01:05:30,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:05:30,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:05:30,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:05:30,632 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:05:30,632 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:05:30,633 INFO L87 Difference]: Start difference. First operand 137 states and 171 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-24 01:05:30,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:05:30,679 INFO L93 Difference]: Finished difference Result 199 states and 258 transitions. [2024-11-24 01:05:30,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:05:30,679 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 98 [2024-11-24 01:05:30,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:05:30,681 INFO L225 Difference]: With dead ends: 199 [2024-11-24 01:05:30,681 INFO L226 Difference]: Without dead ends: 137 [2024-11-24 01:05:30,681 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 [2024-11-24 01:05:30,682 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 1 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:05:30,682 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 229 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:05:30,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-24 01:05:30,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2024-11-24 01:05:30,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 99 states have (on average 1.1717171717171717) internal successors, (116), 104 states have internal predecessors, (116), 24 states have call successors, (24), 10 states have call predecessors, (24), 13 states have return successors, (30), 22 states have call predecessors, (30), 22 states have call successors, (30) [2024-11-24 01:05:30,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 170 transitions. [2024-11-24 01:05:30,715 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 170 transitions. Word has length 98 [2024-11-24 01:05:30,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:05:30,715 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 170 transitions. [2024-11-24 01:05:30,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-24 01:05:30,715 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 170 transitions. [2024-11-24 01:05:30,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-24 01:05:30,717 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:05:30,717 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:05:30,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-24 01:05:30,717 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:05:30,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:05:30,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1690949174, now seen corresponding path program 1 times [2024-11-24 01:05:30,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:05:30,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143777783] [2024-11-24 01:05:30,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:05:30,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:05:30,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:05:31,724 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-24 01:05:31,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:05:31,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143777783] [2024-11-24 01:05:31,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143777783] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:05:31,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362065082] [2024-11-24 01:05:31,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:05:31,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:05:31,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:05:31,727 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:05:31,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-24 01:05:32,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:05:32,034 INFO L256 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-24 01:05:32,036 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:05:32,232 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-24 01:05:32,233 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:05:32,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362065082] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:05:32,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:05:32,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [14] total 21 [2024-11-24 01:05:32,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684719098] [2024-11-24 01:05:32,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:05:32,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 01:05:32,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:05:32,234 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 01:05:32,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2024-11-24 01:05:32,235 INFO L87 Difference]: Start difference. First operand 137 states and 170 transitions. Second operand has 9 states, 8 states have (on average 9.125) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-24 01:05:32,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:05:32,323 INFO L93 Difference]: Finished difference Result 252 states and 312 transitions. [2024-11-24 01:05:32,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 01:05:32,324 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.125) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 98 [2024-11-24 01:05:32,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:05:32,325 INFO L225 Difference]: With dead ends: 252 [2024-11-24 01:05:32,325 INFO L226 Difference]: Without dead ends: 137 [2024-11-24 01:05:32,326 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2024-11-24 01:05:32,326 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 0 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:05:32,326 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 574 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:05:32,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-24 01:05:32,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 135. [2024-11-24 01:05:32,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 98 states have (on average 1.1734693877551021) internal successors, (115), 102 states have internal predecessors, (115), 24 states have call successors, (24), 10 states have call predecessors, (24), 12 states have return successors, (26), 22 states have call predecessors, (26), 22 states have call successors, (26) [2024-11-24 01:05:32,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 165 transitions. [2024-11-24 01:05:32,351 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 165 transitions. Word has length 98 [2024-11-24 01:05:32,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:05:32,352 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 165 transitions. [2024-11-24 01:05:32,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.125) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-24 01:05:32,352 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 165 transitions. [2024-11-24 01:05:32,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-24 01:05:32,353 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:05:32,353 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:05:32,363 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-24 01:05:32,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-24 01:05:32,558 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:05:32,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:05:32,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1927977348, now seen corresponding path program 1 times [2024-11-24 01:05:32,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:05:32,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446323992] [2024-11-24 01:05:32,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:05:32,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:05:32,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:05:33,099 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-24 01:05:33,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:05:33,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446323992] [2024-11-24 01:05:33,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446323992] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:05:33,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770819631] [2024-11-24 01:05:33,100 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:05:33,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:05:33,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:05:33,102 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:05:33,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-24 01:05:33,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:05:33,421 INFO L256 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-24 01:05:33,425 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:05:33,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-24 01:05:33,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-24 01:05:37,720 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((|v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_1| Int) (|v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_1| Int)) (not (= 0 (select (select |c_#memory_$Pointer$#2.offset| |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_1|) |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_1|)))) (exists ((|v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_1| Int) (|v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_1| Int)) (not (= (select (select |c_#memory_$Pointer$#2.base| |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_1|) |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_1|) 0)))) is different from true [2024-11-24 01:05:38,371 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 50 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-24 01:05:38,371 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:05:38,964 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-24 01:05:38,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770819631] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:05:38,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:05:38,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 16, 11] total 30 [2024-11-24 01:05:38,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390315285] [2024-11-24 01:05:38,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:05:38,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-24 01:05:38,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:05:38,965 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-24 01:05:38,966 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=722, Unknown=1, NotChecked=54, Total=870 [2024-11-24 01:05:38,966 INFO L87 Difference]: Start difference. First operand 135 states and 165 transitions. Second operand has 30 states, 29 states have (on average 4.275862068965517) internal successors, (124), 30 states have internal predecessors, (124), 9 states have call successors, (23), 4 states have call predecessors, (23), 7 states have return successors, (23), 8 states have call predecessors, (23), 9 states have call successors, (23) [2024-11-24 01:05:42,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:05:47,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:05:51,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:05:53,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:05:53,499 INFO L93 Difference]: Finished difference Result 441 states and 582 transitions. [2024-11-24 01:05:53,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-24 01:05:53,500 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 4.275862068965517) internal successors, (124), 30 states have internal predecessors, (124), 9 states have call successors, (23), 4 states have call predecessors, (23), 7 states have return successors, (23), 8 states have call predecessors, (23), 9 states have call successors, (23) Word has length 100 [2024-11-24 01:05:53,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:05:53,502 INFO L225 Difference]: With dead ends: 441 [2024-11-24 01:05:53,503 INFO L226 Difference]: Without dead ends: 321 [2024-11-24 01:05:53,505 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 187 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=393, Invalid=2690, Unknown=1, NotChecked=108, Total=3192 [2024-11-24 01:05:53,505 INFO L435 NwaCegarLoop]: 98 mSDtfsCounter, 185 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 1441 mSolverCounterSat, 84 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 1428 SdHoareTripleChecker+Invalid, 2054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1441 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 526 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:05:53,506 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 1428 Invalid, 2054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1441 Invalid, 3 Unknown, 526 Unchecked, 13.5s Time] [2024-11-24 01:05:53,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2024-11-24 01:05:53,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 276. [2024-11-24 01:05:53,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 208 states have (on average 1.1971153846153846) internal successors, (249), 216 states have internal predecessors, (249), 43 states have call successors, (43), 18 states have call predecessors, (43), 24 states have return successors, (60), 41 states have call predecessors, (60), 40 states have call successors, (60) [2024-11-24 01:05:53,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 352 transitions. [2024-11-24 01:05:53,592 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 352 transitions. Word has length 100 [2024-11-24 01:05:53,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:05:53,593 INFO L471 AbstractCegarLoop]: Abstraction has 276 states and 352 transitions. [2024-11-24 01:05:53,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 4.275862068965517) internal successors, (124), 30 states have internal predecessors, (124), 9 states have call successors, (23), 4 states have call predecessors, (23), 7 states have return successors, (23), 8 states have call predecessors, (23), 9 states have call successors, (23) [2024-11-24 01:05:53,593 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 352 transitions. [2024-11-24 01:05:53,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-24 01:05:53,596 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:05:53,597 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:05:53,609 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-24 01:05:53,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-24 01:05:53,797 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:05:53,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:05:53,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1124779772, now seen corresponding path program 1 times [2024-11-24 01:05:53,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:05:53,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668825816] [2024-11-24 01:05:53,798 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:05:53,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:05:53,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:05:53,939 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-24 01:05:53,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:05:53,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668825816] [2024-11-24 01:05:53,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668825816] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:05:53,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881030397] [2024-11-24 01:05:53,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:05:53,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:05:53,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:05:53,943 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:05:53,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-24 01:05:54,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:05:54,275 INFO L256 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:05:54,277 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:05:54,283 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-24 01:05:54,283 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:05:54,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881030397] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:05:54,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:05:54,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2024-11-24 01:05:54,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661550266] [2024-11-24 01:05:54,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:05:54,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:05:54,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:05:54,284 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:05:54,284 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:05:54,284 INFO L87 Difference]: Start difference. First operand 276 states and 352 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 01:05:54,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:05:54,373 INFO L93 Difference]: Finished difference Result 387 states and 488 transitions. [2024-11-24 01:05:54,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:05:54,374 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 100 [2024-11-24 01:05:54,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:05:54,376 INFO L225 Difference]: With dead ends: 387 [2024-11-24 01:05:54,376 INFO L226 Difference]: Without dead ends: 212 [2024-11-24 01:05:54,378 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:05:54,379 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 1 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:05:54,379 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 229 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:05:54,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-11-24 01:05:54,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 207. [2024-11-24 01:05:54,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 159 states have (on average 1.1572327044025157) internal successors, (184), 163 states have internal predecessors, (184), 30 states have call successors, (30), 15 states have call predecessors, (30), 17 states have return successors, (33), 28 states have call predecessors, (33), 28 states have call successors, (33) [2024-11-24 01:05:54,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 247 transitions. [2024-11-24 01:05:54,454 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 247 transitions. Word has length 100 [2024-11-24 01:05:54,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:05:54,454 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 247 transitions. [2024-11-24 01:05:54,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 01:05:54,455 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 247 transitions. [2024-11-24 01:05:54,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-24 01:05:54,457 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:05:54,457 INFO L218 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:05:54,468 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-24 01:05:54,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:05:54,662 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:05:54,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:05:54,663 INFO L85 PathProgramCache]: Analyzing trace with hash -948954101, now seen corresponding path program 1 times [2024-11-24 01:05:54,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:05:54,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511882585] [2024-11-24 01:05:54,663 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:05:54,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:05:54,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:05:58,426 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 16 proven. 54 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-24 01:05:58,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:05:58,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511882585] [2024-11-24 01:05:58,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511882585] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:05:58,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246658594] [2024-11-24 01:05:58,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:05:58,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:05:58,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:05:58,429 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:05:58,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-24 01:05:58,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:05:58,807 INFO L256 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 126 conjuncts are in the unsatisfiable core [2024-11-24 01:05:58,813 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:05:58,968 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 9 treesize of output 12 [2024-11-24 01:05:58,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-24 01:05:58,980 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 9 treesize of output 8 [2024-11-24 01:05:58,983 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 7 [2024-11-24 01:06:03,221 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 80 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-24 01:06:03,222 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:06:07,002 INFO L349 Elim1Store]: treesize reduction 58, result has 65.1 percent of original size [2024-11-24 01:06:07,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 7032 treesize of output 6652 [2024-11-24 01:06:07,452 INFO L349 Elim1Store]: treesize reduction 79, result has 62.6 percent of original size [2024-11-24 01:06:07,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 32486 treesize of output 30249 [2024-11-24 01:06:07,859 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:06:07,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 4676 treesize of output 4572 [2024-11-24 01:06:08,312 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:06:08,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5217 treesize of output 4993 [2024-11-24 01:06:16,905 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-11-24 01:06:17,108 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:06:17,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 54 [2024-11-24 01:06:17,144 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-24 01:06:17,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2024-11-24 01:06:17,160 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-11-24 01:06:17,196 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-24 01:06:17,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 120 treesize of output 108 [2024-11-24 01:06:17,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-24 01:06:17,312 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 24 treesize of output 22 [2024-11-24 01:06:17,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2024-11-24 01:06:17,711 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 53 proven. 20 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-24 01:06:17,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246658594] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:06:17,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:06:17,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27, 25] total 72 [2024-11-24 01:06:17,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452850728] [2024-11-24 01:06:17,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:06:17,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-11-24 01:06:17,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:06:17,713 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-11-24 01:06:17,716 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=4797, Unknown=0, NotChecked=0, Total=5112 [2024-11-24 01:06:17,717 INFO L87 Difference]: Start difference. First operand 207 states and 247 transitions. Second operand has 72 states, 68 states have (on average 3.2058823529411766) internal successors, (218), 63 states have internal predecessors, (218), 22 states have call successors, (30), 5 states have call predecessors, (30), 15 states have return successors, (29), 19 states have call predecessors, (29), 20 states have call successors, (29) [2024-11-24 01:06:28,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:06:28,694 INFO L93 Difference]: Finished difference Result 645 states and 840 transitions. [2024-11-24 01:06:28,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-11-24 01:06:28,694 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 68 states have (on average 3.2058823529411766) internal successors, (218), 63 states have internal predecessors, (218), 22 states have call successors, (30), 5 states have call predecessors, (30), 15 states have return successors, (29), 19 states have call predecessors, (29), 20 states have call successors, (29) Word has length 113 [2024-11-24 01:06:28,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:06:28,698 INFO L225 Difference]: With dead ends: 645 [2024-11-24 01:06:28,698 INFO L226 Difference]: Without dead ends: 538 [2024-11-24 01:06:28,701 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 189 SyntacticMatches, 7 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2989 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=1255, Invalid=11855, Unknown=0, NotChecked=0, Total=13110 [2024-11-24 01:06:28,702 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 423 mSDsluCounter, 2619 mSDsCounter, 0 mSdLazyCounter, 3391 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 2696 SdHoareTripleChecker+Invalid, 3642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 3391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:06:28,702 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 2696 Invalid, 3642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 3391 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-11-24 01:06:28,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2024-11-24 01:06:28,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 424. [2024-11-24 01:06:28,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 331 states have (on average 1.1782477341389728) internal successors, (390), 338 states have internal predecessors, (390), 57 states have call successors, (57), 24 states have call predecessors, (57), 35 states have return successors, (94), 61 states have call predecessors, (94), 54 states have call successors, (94) [2024-11-24 01:06:28,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 541 transitions. [2024-11-24 01:06:28,836 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 541 transitions. Word has length 113 [2024-11-24 01:06:28,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:06:28,837 INFO L471 AbstractCegarLoop]: Abstraction has 424 states and 541 transitions. [2024-11-24 01:06:28,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 68 states have (on average 3.2058823529411766) internal successors, (218), 63 states have internal predecessors, (218), 22 states have call successors, (30), 5 states have call predecessors, (30), 15 states have return successors, (29), 19 states have call predecessors, (29), 20 states have call successors, (29) [2024-11-24 01:06:28,837 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 541 transitions. [2024-11-24 01:06:28,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-24 01:06:28,839 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:06:28,839 INFO L218 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:06:28,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-24 01:06:29,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:06:29,044 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:06:29,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:06:29,045 INFO L85 PathProgramCache]: Analyzing trace with hash -690788663, now seen corresponding path program 1 times [2024-11-24 01:06:29,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:06:29,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223645816] [2024-11-24 01:06:29,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:06:29,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:06:29,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:06:30,372 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 30 proven. 43 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-24 01:06:30,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:06:30,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223645816] [2024-11-24 01:06:30,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223645816] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:06:30,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418888586] [2024-11-24 01:06:30,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:06:30,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:06:30,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:06:30,376 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:06:30,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-24 01:06:30,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:06:30,860 INFO L256 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 81 conjuncts are in the unsatisfiable core [2024-11-24 01:06:30,868 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:06:31,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-24 01:06:32,705 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 74 proven. 11 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-24 01:06:32,705 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:06:34,138 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 227 treesize of output 211 [2024-11-24 01:06:34,145 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 51 treesize of output 47 [2024-11-24 01:06:34,152 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 53 treesize of output 45 [2024-11-24 01:06:34,357 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 53 proven. 20 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-24 01:06:34,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418888586] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:06:34,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:06:34,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 22, 20] total 55 [2024-11-24 01:06:34,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567138318] [2024-11-24 01:06:34,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:06:34,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-24 01:06:34,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:06:34,359 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-24 01:06:34,360 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=2773, Unknown=0, NotChecked=0, Total=2970 [2024-11-24 01:06:34,360 INFO L87 Difference]: Start difference. First operand 424 states and 541 transitions. Second operand has 55 states, 53 states have (on average 3.188679245283019) internal successors, (169), 54 states have internal predecessors, (169), 19 states have call successors, (29), 3 states have call predecessors, (29), 11 states have return successors, (28), 17 states have call predecessors, (28), 18 states have call successors, (28) [2024-11-24 01:06:38,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:06:42,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:06:46,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:06:50,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:06:59,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:06:59,840 INFO L93 Difference]: Finished difference Result 1566 states and 2236 transitions. [2024-11-24 01:06:59,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2024-11-24 01:06:59,841 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 53 states have (on average 3.188679245283019) internal successors, (169), 54 states have internal predecessors, (169), 19 states have call successors, (29), 3 states have call predecessors, (29), 11 states have return successors, (28), 17 states have call predecessors, (28), 18 states have call successors, (28) Word has length 113 [2024-11-24 01:06:59,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:06:59,849 INFO L225 Difference]: With dead ends: 1566 [2024-11-24 01:06:59,849 INFO L226 Difference]: Without dead ends: 1007 [2024-11-24 01:06:59,856 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 232 SyntacticMatches, 3 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3922 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=1738, Invalid=14012, Unknown=0, NotChecked=0, Total=15750 [2024-11-24 01:06:59,861 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 605 mSDsluCounter, 2485 mSDsCounter, 0 mSdLazyCounter, 3774 mSolverCounterSat, 256 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 2589 SdHoareTripleChecker+Invalid, 4034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 3774 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:06:59,862 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [605 Valid, 2589 Invalid, 4034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 3774 Invalid, 4 Unknown, 0 Unchecked, 20.1s Time] [2024-11-24 01:06:59,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2024-11-24 01:07:00,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 749. [2024-11-24 01:07:00,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 590 states have (on average 1.2372881355932204) internal successors, (730), 594 states have internal predecessors, (730), 99 states have call successors, (99), 35 states have call predecessors, (99), 59 states have return successors, (187), 119 states have call predecessors, (187), 94 states have call successors, (187) [2024-11-24 01:07:00,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1016 transitions. [2024-11-24 01:07:00,080 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1016 transitions. Word has length 113 [2024-11-24 01:07:00,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:07:00,080 INFO L471 AbstractCegarLoop]: Abstraction has 749 states and 1016 transitions. [2024-11-24 01:07:00,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 53 states have (on average 3.188679245283019) internal successors, (169), 54 states have internal predecessors, (169), 19 states have call successors, (29), 3 states have call predecessors, (29), 11 states have return successors, (28), 17 states have call predecessors, (28), 18 states have call successors, (28) [2024-11-24 01:07:00,080 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1016 transitions. [2024-11-24 01:07:00,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-24 01:07:00,083 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:07:00,083 INFO L218 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:07:00,095 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-24 01:07:00,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:07:00,284 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:07:00,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:07:00,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1701905913, now seen corresponding path program 1 times [2024-11-24 01:07:00,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:07:00,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776676462] [2024-11-24 01:07:00,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:07:00,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:07:00,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:07:00,627 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 30 proven. 41 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-24 01:07:00,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:07:00,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776676462] [2024-11-24 01:07:00,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776676462] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:07:00,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271426439] [2024-11-24 01:07:00,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:07:00,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:07:00,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:07:00,630 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:07:00,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-24 01:07:00,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:07:00,963 INFO L256 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-24 01:07:00,966 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:07:01,162 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-24 01:07:01,162 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:07:01,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271426439] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:07:01,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:07:01,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 22 [2024-11-24 01:07:01,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292408444] [2024-11-24 01:07:01,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:07:01,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:07:01,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:07:01,164 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:07:01,164 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2024-11-24 01:07:01,164 INFO L87 Difference]: Start difference. First operand 749 states and 1016 transitions. Second operand has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 5 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-24 01:07:01,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:07:01,764 INFO L93 Difference]: Finished difference Result 1647 states and 2292 transitions. [2024-11-24 01:07:01,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-24 01:07:01,765 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 5 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 113 [2024-11-24 01:07:01,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:07:01,774 INFO L225 Difference]: With dead ends: 1647 [2024-11-24 01:07:01,774 INFO L226 Difference]: Without dead ends: 756 [2024-11-24 01:07:01,777 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=881, Unknown=0, NotChecked=0, Total=992 [2024-11-24 01:07:01,780 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 108 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:07:01,781 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 471 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:07:01,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2024-11-24 01:07:01,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 706. [2024-11-24 01:07:01,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 556 states have (on average 1.2158273381294964) internal successors, (676), 567 states have internal predecessors, (676), 92 states have call successors, (92), 34 states have call predecessors, (92), 57 states have return successors, (158), 104 states have call predecessors, (158), 87 states have call successors, (158) [2024-11-24 01:07:01,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 926 transitions. [2024-11-24 01:07:01,998 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 926 transitions. Word has length 113 [2024-11-24 01:07:01,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:07:01,999 INFO L471 AbstractCegarLoop]: Abstraction has 706 states and 926 transitions. [2024-11-24 01:07:01,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 5 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-24 01:07:01,999 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 926 transitions. [2024-11-24 01:07:02,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-24 01:07:02,001 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:07:02,002 INFO L218 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:07:02,013 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-24 01:07:02,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:07:02,202 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:07:02,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:07:02,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1330556572, now seen corresponding path program 1 times [2024-11-24 01:07:02,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:07:02,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314611942] [2024-11-24 01:07:02,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:07:02,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:07:02,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:07:02,658 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2024-11-24 01:07:02,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:07:02,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314611942] [2024-11-24 01:07:02,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314611942] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:07:02,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:07:02,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 01:07:02,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426127710] [2024-11-24 01:07:02,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:07:02,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 01:07:02,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:07:02,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 01:07:02,660 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:07:02,660 INFO L87 Difference]: Start difference. First operand 706 states and 926 transitions. Second operand has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-24 01:07:02,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:07:02,880 INFO L93 Difference]: Finished difference Result 790 states and 1022 transitions. [2024-11-24 01:07:02,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 01:07:02,881 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 116 [2024-11-24 01:07:02,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:07:02,884 INFO L225 Difference]: With dead ends: 790 [2024-11-24 01:07:02,884 INFO L226 Difference]: Without dead ends: 788 [2024-11-24 01:07:02,885 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:07:02,886 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 3 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:07:02,886 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 567 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:07:02,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2024-11-24 01:07:03,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 759. [2024-11-24 01:07:03,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 592 states have (on average 1.2027027027027026) internal successors, (712), 610 states have internal predecessors, (712), 97 states have call successors, (97), 39 states have call predecessors, (97), 69 states have return successors, (176), 109 states have call predecessors, (176), 92 states have call successors, (176) [2024-11-24 01:07:03,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 985 transitions. [2024-11-24 01:07:03,141 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 985 transitions. Word has length 116 [2024-11-24 01:07:03,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:07:03,142 INFO L471 AbstractCegarLoop]: Abstraction has 759 states and 985 transitions. [2024-11-24 01:07:03,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-24 01:07:03,142 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 985 transitions. [2024-11-24 01:07:03,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-24 01:07:03,145 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:07:03,145 INFO L218 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:07:03,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-24 01:07:03,146 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:07:03,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:07:03,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1819387684, now seen corresponding path program 1 times [2024-11-24 01:07:03,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:07:03,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269743911] [2024-11-24 01:07:03,147 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:07:03,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:07:03,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:07:03,451 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-11-24 01:07:03,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:07:03,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269743911] [2024-11-24 01:07:03,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269743911] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:07:03,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:07:03,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 01:07:03,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968312701] [2024-11-24 01:07:03,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:07:03,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:07:03,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:07:03,453 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:07:03,453 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:07:03,453 INFO L87 Difference]: Start difference. First operand 759 states and 985 transitions. Second operand has 6 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-24 01:07:03,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:07:03,729 INFO L93 Difference]: Finished difference Result 781 states and 1006 transitions. [2024-11-24 01:07:03,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:07:03,729 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 122 [2024-11-24 01:07:03,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:07:03,733 INFO L225 Difference]: With dead ends: 781 [2024-11-24 01:07:03,733 INFO L226 Difference]: Without dead ends: 779 [2024-11-24 01:07:03,734 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:07:03,734 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 3 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:07:03,734 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 364 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:07:03,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2024-11-24 01:07:03,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 779. [2024-11-24 01:07:03,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 607 states have (on average 1.1976935749588138) internal successors, (727), 625 states have internal predecessors, (727), 97 states have call successors, (97), 44 states have call predecessors, (97), 74 states have return successors, (176), 109 states have call predecessors, (176), 92 states have call successors, (176) [2024-11-24 01:07:03,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 1000 transitions. [2024-11-24 01:07:03,987 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 1000 transitions. Word has length 122 [2024-11-24 01:07:03,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:07:03,988 INFO L471 AbstractCegarLoop]: Abstraction has 779 states and 1000 transitions. [2024-11-24 01:07:03,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-24 01:07:03,989 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 1000 transitions. [2024-11-24 01:07:03,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-24 01:07:03,992 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:07:03,992 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:07:03,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-24 01:07:03,992 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:07:03,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:07:03,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1458216063, now seen corresponding path program 1 times [2024-11-24 01:07:03,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:07:03,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500874900] [2024-11-24 01:07:03,993 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:07:03,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:07:04,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:07:04,492 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-11-24 01:07:04,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:07:04,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500874900] [2024-11-24 01:07:04,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500874900] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:07:04,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126529695] [2024-11-24 01:07:04,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:07:04,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:07:04,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:07:04,495 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:07:04,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-24 01:07:04,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:07:04,881 INFO L256 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-24 01:07:04,883 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:07:04,977 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-24 01:07:04,977 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:07:04,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126529695] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:07:04,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:07:04,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2024-11-24 01:07:04,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852397153] [2024-11-24 01:07:04,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:07:04,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 01:07:04,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:07:04,978 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 01:07:04,978 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2024-11-24 01:07:04,978 INFO L87 Difference]: Start difference. First operand 779 states and 1000 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-24 01:07:05,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:07:05,224 INFO L93 Difference]: Finished difference Result 1267 states and 1626 transitions. [2024-11-24 01:07:05,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 01:07:05,225 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 125 [2024-11-24 01:07:05,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:07:05,229 INFO L225 Difference]: With dead ends: 1267 [2024-11-24 01:07:05,229 INFO L226 Difference]: Without dead ends: 801 [2024-11-24 01:07:05,231 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2024-11-24 01:07:05,231 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 1 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:07:05,232 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 535 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:07:05,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2024-11-24 01:07:05,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 775. [2024-11-24 01:07:05,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 603 states have (on average 1.1890547263681592) internal successors, (717), 623 states have internal predecessors, (717), 97 states have call successors, (97), 44 states have call predecessors, (97), 74 states have return successors, (176), 107 states have call predecessors, (176), 92 states have call successors, (176) [2024-11-24 01:07:05,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 990 transitions. [2024-11-24 01:07:05,493 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 990 transitions. Word has length 125 [2024-11-24 01:07:05,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:07:05,496 INFO L471 AbstractCegarLoop]: Abstraction has 775 states and 990 transitions. [2024-11-24 01:07:05,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-24 01:07:05,497 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 990 transitions. [2024-11-24 01:07:05,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-24 01:07:05,500 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:07:05,500 INFO L218 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:07:05,514 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-24 01:07:05,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:07:05,703 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:07:05,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:07:05,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1873844276, now seen corresponding path program 1 times [2024-11-24 01:07:05,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:07:05,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764850736] [2024-11-24 01:07:05,705 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:07:05,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:07:05,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:07:07,329 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-24 01:07:07,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:07:07,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764850736] [2024-11-24 01:07:07,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764850736] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:07:07,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100622372] [2024-11-24 01:07:07,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:07:07,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:07:07,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:07:07,331 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:07:07,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-24 01:07:07,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:07:07,723 INFO L256 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-11-24 01:07:07,727 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:07:07,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-24 01:07:07,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-24 01:07:11,977 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((|v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_12| Int) (|v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_13| Int)) (not (= (select (select |c_#memory_$Pointer$#2.base| |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_13|) |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_12|) |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_13|))) (exists ((|v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_12| Int) (|v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_13| Int)) (not (= (+ 16 |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_12|) (select (select |c_#memory_$Pointer$#2.offset| |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_13|) |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_12|))))) is different from true [2024-11-24 01:07:16,096 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_90| Int)) (not (= (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_90|) 0) |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_90|))) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_90| Int)) (not (= (select (select |c_#memory_$Pointer$#2.offset| |v_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base_BEFORE_CALL_90|) 0) 16)))) is different from true [2024-11-24 01:07:20,166 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_53| Int)) (not (= 16 (select (select |c_#memory_$Pointer$#2.offset| |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_53|) 0)))) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_53| Int)) (not (= |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_53| (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_53|) 0))))) is different from true [2024-11-24 01:07:44,709 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 105 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 7 not checked. [2024-11-24 01:07:44,709 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:07:49,794 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-24 01:07:49,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100622372] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:07:49,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:07:49,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19, 14] total 38 [2024-11-24 01:07:49,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193431710] [2024-11-24 01:07:49,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:07:49,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-24 01:07:49,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:07:49,796 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-24 01:07:49,796 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1052, Unknown=10, NotChecked=204, Total=1406 [2024-11-24 01:07:49,797 INFO L87 Difference]: Start difference. First operand 775 states and 990 transitions. Second operand has 38 states, 36 states have (on average 5.333333333333333) internal successors, (192), 36 states have internal predecessors, (192), 16 states have call successors, (30), 5 states have call predecessors, (30), 10 states have return successors, (30), 14 states have call predecessors, (30), 16 states have call successors, (30) [2024-11-24 01:07:53,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:07:57,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:08:01,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:08:05,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:08:09,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:08:13,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:08:18,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:08:22,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:08:26,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:08:30,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:08:34,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:08:38,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:08:42,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:08:46,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:08:50,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:08:54,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:08:58,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:09:02,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:09:06,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:09:10,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:09:14,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:09:18,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:09:22,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:09:26,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:09:30,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:09:34,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:09:46,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:09:50,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:09:58,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:10:02,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:10:06,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:10:10,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:10:14,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:10:34,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:10:42,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:10:46,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:10:51,048 WARN L873 $PredicateComparison]: unable to prove that (and (or (exists ((|v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_12| Int) (|v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_13| Int)) (not (= (select (select |c_#memory_$Pointer$#2.base| |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_13|) |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_12|) |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_13|))) (exists ((|v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_12| Int) (|v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_13| Int)) (not (= (+ 16 |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_12|) (select (select |c_#memory_$Pointer$#2.offset| |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_13|) |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_12|))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_53| Int)) (not (= 16 (select (select |c_#memory_$Pointer$#2.offset| |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_53|) 0)))) (exists ((|v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_53| Int)) (not (= |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_53| (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_begin_~list#1.base_BEFORE_CALL_53|) 0)))))) is different from true [2024-11-24 01:11:07,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:11:23,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:11:27,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:11:31,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:11:35,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:11:39,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:11:43,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:11:47,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:11:51,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:12:07,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:12:11,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:12:35,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:12:39,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:12:43,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:12:47,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:12:51,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:12:55,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:12:59,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:13:03,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:13:07,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:13:23,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:13:27,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:13:31,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:13:35,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:13:51,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:13:56,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:14:00,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:14:04,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:14:08,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:14:12,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:14:16,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:14:20,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:14:24,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:14:28,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:14:32,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:14:36,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:14:40,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:14:44,244 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:14:48,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:14:52,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:14:56,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:15:00,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:15:04,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:15:08,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:15:12,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:15:12,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:15:12,517 INFO L93 Difference]: Finished difference Result 1275 states and 1759 transitions. [2024-11-24 01:15:12,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-24 01:15:12,518 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 5.333333333333333) internal successors, (192), 36 states have internal predecessors, (192), 16 states have call successors, (30), 5 states have call predecessors, (30), 10 states have return successors, (30), 14 states have call predecessors, (30), 16 states have call successors, (30) Word has length 126 [2024-11-24 01:15:12,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:15:12,527 INFO L225 Difference]: With dead ends: 1275 [2024-11-24 01:15:12,527 INFO L226 Difference]: Without dead ends: 938 [2024-11-24 01:15:12,530 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 240 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 157.9s TimeCoverageRelationStatistics Valid=363, Invalid=2266, Unknown=39, NotChecked=412, Total=3080 [2024-11-24 01:15:12,531 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 145 mSDsluCounter, 1308 mSDsCounter, 0 mSdLazyCounter, 1359 mSolverCounterSat, 52 mSolverCounterUnsat, 81 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 325.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 1418 SdHoareTripleChecker+Invalid, 2713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1359 IncrementalHoareTripleChecker+Invalid, 81 IncrementalHoareTripleChecker+Unknown, 1221 IncrementalHoareTripleChecker+Unchecked, 325.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:15:12,531 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 1418 Invalid, 2713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1359 Invalid, 81 Unknown, 1221 Unchecked, 325.6s Time] [2024-11-24 01:15:12,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2024-11-24 01:15:12,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 708. [2024-11-24 01:15:12,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 561 states have (on average 1.1764705882352942) internal successors, (660), 570 states have internal predecessors, (660), 81 states have call successors, (81), 46 states have call predecessors, (81), 65 states have return successors, (140), 91 states have call predecessors, (140), 77 states have call successors, (140) [2024-11-24 01:15:12,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 881 transitions. [2024-11-24 01:15:12,856 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 881 transitions. Word has length 126 [2024-11-24 01:15:12,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:15:12,856 INFO L471 AbstractCegarLoop]: Abstraction has 708 states and 881 transitions. [2024-11-24 01:15:12,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 5.333333333333333) internal successors, (192), 36 states have internal predecessors, (192), 16 states have call successors, (30), 5 states have call predecessors, (30), 10 states have return successors, (30), 14 states have call predecessors, (30), 16 states have call successors, (30) [2024-11-24 01:15:12,857 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 881 transitions. [2024-11-24 01:15:12,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-24 01:15:12,860 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:15:12,860 INFO L218 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:15:12,874 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-24 01:15:13,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-24 01:15:13,061 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:15:13,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:15:13,061 INFO L85 PathProgramCache]: Analyzing trace with hash 218478925, now seen corresponding path program 1 times [2024-11-24 01:15:13,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:15:13,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379787847] [2024-11-24 01:15:13,061 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:15:13,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:15:13,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:15:13,628 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-11-24 01:15:13,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:15:13,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379787847] [2024-11-24 01:15:13,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379787847] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:15:13,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:15:13,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-24 01:15:13,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373784468] [2024-11-24 01:15:13,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:15:13,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 01:15:13,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:15:13,630 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 01:15:13,630 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:15:13,630 INFO L87 Difference]: Start difference. First operand 708 states and 881 transitions. Second operand has 9 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 5 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-24 01:15:13,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:15:13,983 INFO L93 Difference]: Finished difference Result 726 states and 898 transitions. [2024-11-24 01:15:13,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 01:15:13,983 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 5 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 129 [2024-11-24 01:15:13,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:15:13,988 INFO L225 Difference]: With dead ends: 726 [2024-11-24 01:15:13,988 INFO L226 Difference]: Without dead ends: 724 [2024-11-24 01:15:13,989 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-24 01:15:13,990 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 3 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:15:13,990 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 538 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:15:13,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2024-11-24 01:15:14,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 724. [2024-11-24 01:15:14,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 573 states have (on average 1.1727748691099475) internal successors, (672), 582 states have internal predecessors, (672), 81 states have call successors, (81), 50 states have call predecessors, (81), 69 states have return successors, (140), 91 states have call predecessors, (140), 77 states have call successors, (140) [2024-11-24 01:15:14,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 893 transitions. [2024-11-24 01:15:14,267 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 893 transitions. Word has length 129 [2024-11-24 01:15:14,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:15:14,268 INFO L471 AbstractCegarLoop]: Abstraction has 724 states and 893 transitions. [2024-11-24 01:15:14,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 5 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-24 01:15:14,269 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 893 transitions. [2024-11-24 01:15:14,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-24 01:15:14,272 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:15:14,272 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:15:14,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-24 01:15:14,272 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:15:14,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:15:14,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1219106194, now seen corresponding path program 1 times [2024-11-24 01:15:14,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:15:14,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360260568] [2024-11-24 01:15:14,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:15:14,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:15:14,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:15:14,778 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 22 proven. 19 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2024-11-24 01:15:14,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:15:14,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360260568] [2024-11-24 01:15:14,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360260568] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:15:14,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838547216] [2024-11-24 01:15:14,779 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:15:14,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:15:14,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:15:14,782 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:15:14,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-24 01:15:15,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:15:15,230 INFO L256 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-24 01:15:15,233 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:15:15,346 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-24 01:15:15,346 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:15:15,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838547216] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:15:15,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:15:15,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2024-11-24 01:15:15,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806941451] [2024-11-24 01:15:15,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:15:15,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 01:15:15,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:15:15,347 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 01:15:15,347 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2024-11-24 01:15:15,347 INFO L87 Difference]: Start difference. First operand 724 states and 893 transitions. Second operand has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-24 01:15:15,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:15:15,602 INFO L93 Difference]: Finished difference Result 1183 states and 1457 transitions. [2024-11-24 01:15:15,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 01:15:15,603 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 134 [2024-11-24 01:15:15,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:15:15,607 INFO L225 Difference]: With dead ends: 1183 [2024-11-24 01:15:15,608 INFO L226 Difference]: Without dead ends: 735 [2024-11-24 01:15:15,609 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2024-11-24 01:15:15,610 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 1 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:15:15,610 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 527 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:15:15,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2024-11-24 01:15:15,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 716. [2024-11-24 01:15:15,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 568 states have (on average 1.1742957746478873) internal successors, (667), 574 states have internal predecessors, (667), 81 states have call successors, (81), 50 states have call predecessors, (81), 66 states have return successors, (131), 91 states have call predecessors, (131), 77 states have call successors, (131) [2024-11-24 01:15:15,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 879 transitions. [2024-11-24 01:15:15,938 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 879 transitions. Word has length 134 [2024-11-24 01:15:15,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:15:15,939 INFO L471 AbstractCegarLoop]: Abstraction has 716 states and 879 transitions. [2024-11-24 01:15:15,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-24 01:15:15,939 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 879 transitions. [2024-11-24 01:15:15,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-24 01:15:15,943 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:15:15,943 INFO L218 NwaCegarLoop]: trace histogram [7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:15:15,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-24 01:15:16,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-24 01:15:16,144 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:15:16,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:15:16,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1267593539, now seen corresponding path program 2 times [2024-11-24 01:15:16,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:15:16,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063393953] [2024-11-24 01:15:16,145 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:15:16,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:15:16,216 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:15:16,218 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:15:18,574 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 18 proven. 72 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-24 01:15:18,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:15:18,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063393953] [2024-11-24 01:15:18,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063393953] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:15:18,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575747552] [2024-11-24 01:15:18,575 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:15:18,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:15:18,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:15:18,577 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:15:18,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-24 01:15:18,995 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:15:18,995 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:15:18,999 INFO L256 TraceCheckSpWp]: Trace formula consists of 592 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-24 01:15:19,003 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:15:19,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-24 01:15:19,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-24 01:15:21,458 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 64 proven. 4 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-11-24 01:15:21,458 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:15:22,180 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 182 treesize of output 174 [2024-11-24 01:15:22,211 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 164 treesize of output 156 [2024-11-24 01:15:22,388 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-24 01:15:22,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575747552] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:15:22,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:15:22,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 13, 11] total 39 [2024-11-24 01:15:22,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796259792] [2024-11-24 01:15:22,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:15:22,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-24 01:15:22,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:15:22,389 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-24 01:15:22,389 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1354, Unknown=0, NotChecked=0, Total=1482 [2024-11-24 01:15:22,390 INFO L87 Difference]: Start difference. First operand 716 states and 879 transitions. Second operand has 39 states, 37 states have (on average 4.243243243243243) internal successors, (157), 38 states have internal predecessors, (157), 21 states have call successors, (31), 3 states have call predecessors, (31), 6 states have return successors, (30), 18 states have call predecessors, (30), 21 states have call successors, (30) [2024-11-24 01:15:26,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:15:26,449 INFO L93 Difference]: Finished difference Result 995 states and 1298 transitions. [2024-11-24 01:15:26,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-24 01:15:26,450 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 37 states have (on average 4.243243243243243) internal successors, (157), 38 states have internal predecessors, (157), 21 states have call successors, (31), 3 states have call predecessors, (31), 6 states have return successors, (30), 18 states have call predecessors, (30), 21 states have call successors, (30) Word has length 135 [2024-11-24 01:15:26,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:15:26,453 INFO L225 Difference]: With dead ends: 995 [2024-11-24 01:15:26,454 INFO L226 Difference]: Without dead ends: 588 [2024-11-24 01:15:26,456 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 257 SyntacticMatches, 9 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 877 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=467, Invalid=3955, Unknown=0, NotChecked=0, Total=4422 [2024-11-24 01:15:26,456 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 227 mSDsluCounter, 2073 mSDsCounter, 0 mSdLazyCounter, 2120 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 2180 SdHoareTripleChecker+Invalid, 2219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:15:26,456 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 2180 Invalid, 2219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2120 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-24 01:15:26,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2024-11-24 01:15:26,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 460. [2024-11-24 01:15:26,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 365 states have (on average 1.1315068493150684) internal successors, (413), 368 states have internal predecessors, (413), 52 states have call successors, (52), 36 states have call predecessors, (52), 42 states have return successors, (73), 55 states have call predecessors, (73), 49 states have call successors, (73) [2024-11-24 01:15:26,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 538 transitions. [2024-11-24 01:15:26,621 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 538 transitions. Word has length 135 [2024-11-24 01:15:26,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:15:26,621 INFO L471 AbstractCegarLoop]: Abstraction has 460 states and 538 transitions. [2024-11-24 01:15:26,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 37 states have (on average 4.243243243243243) internal successors, (157), 38 states have internal predecessors, (157), 21 states have call successors, (31), 3 states have call predecessors, (31), 6 states have return successors, (30), 18 states have call predecessors, (30), 21 states have call successors, (30) [2024-11-24 01:15:26,621 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 538 transitions. [2024-11-24 01:15:26,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-24 01:15:26,623 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:15:26,623 INFO L218 NwaCegarLoop]: trace histogram [7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:15:26,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-24 01:15:26,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-24 01:15:26,823 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:15:26,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:15:26,824 INFO L85 PathProgramCache]: Analyzing trace with hash 58768769, now seen corresponding path program 2 times [2024-11-24 01:15:26,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:15:26,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803117955] [2024-11-24 01:15:26,824 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:15:26,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:15:26,904 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:15:26,904 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:15:28,121 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 26 proven. 53 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-24 01:15:28,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:15:28,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803117955] [2024-11-24 01:15:28,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803117955] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:15:28,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253170600] [2024-11-24 01:15:28,121 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:15:28,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:15:28,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:15:28,123 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:15:28,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3432c95c-b68d-4c0a-a938-4d5598fec21e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-24 01:15:28,577 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:15:28,577 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:15:28,581 INFO L256 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 106 conjuncts are in the unsatisfiable core [2024-11-24 01:15:28,587 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:15:28,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-24 01:15:28,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:15:28,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-24 01:15:28,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-24 01:15:28,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:15:28,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-24 01:15:28,793 INFO L349 Elim1Store]: treesize reduction 52, result has 22.4 percent of original size [2024-11-24 01:15:28,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 108 treesize of output 65 [2024-11-24 01:15:28,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:15:28,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 35 [2024-11-24 01:15:33,227 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 91 proven. 5 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2024-11-24 01:15:33,228 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:15:35,522 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:15:35,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 715 treesize of output 596 [2024-11-24 01:15:35,531 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:15:35,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 747 treesize of output 628 [2024-11-24 01:15:37,488 INFO L349 Elim1Store]: treesize reduction 271, result has 65.9 percent of original size [2024-11-24 01:15:37,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 24 new quantified variables, introduced 91 case distinctions, treesize of input 190027 treesize of output 153476 [2024-11-24 01:16:45,698 WARN L286 SmtUtils]: Spent 1.10m on a formula simplification. DAG size of input: 2476 DAG size of output: 1112 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-24 01:16:45,699 INFO L349 Elim1Store]: treesize reduction 8118, result has 35.3 percent of original size [2024-11-24 01:16:45,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 35 select indices, 35 select index equivalence classes, 0 disjoint index pairs (out of 595 index pairs), introduced 49 new quantified variables, introduced 595 case distinctions, treesize of input 1662057 treesize of output 1473654 [2024-11-24 01:16:59,330 WARN L286 SmtUtils]: Spent 13.58s on a formula simplification. DAG size of input: 10441 DAG size of output: 3123 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-24 01:17:03,290 INFO L224 Elim1Store]: Index analysis took 528 ms [2024-11-24 01:17:55,055 WARN L286 SmtUtils]: Spent 51.74s on a formula simplification. DAG size of input: 985 DAG size of output: 953 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-24 01:17:55,055 INFO L349 Elim1Store]: treesize reduction 112, result has 96.6 percent of original size [2024-11-24 01:17:55,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 22 select indices, 22 select index equivalence classes, 1 disjoint index pairs (out of 231 index pairs), introduced 30 new quantified variables, introduced 230 case distinctions, treesize of input 98015 treesize of output 93109