./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d7b9ddf837d983b2f2db252b1327ae049806ab568e5bf2d0a60ffd182bd7d0fe --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:11:44,627 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:11:44,696 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-28 04:11:44,701 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:11:44,701 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:11:44,725 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:11:44,726 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:11:44,726 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:11:44,727 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:11:44,727 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:11:44,727 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:11:44,727 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:11:44,727 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:11:44,727 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:11:44,728 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:11:44,728 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:11:44,728 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:11:44,728 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:11:44,728 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:11:44,728 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:11:44,729 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:11:44,729 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:11:44,729 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:11:44,729 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:11:44,729 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:11:44,729 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:11:44,729 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:11:44,730 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:11:44,730 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:11:44,730 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:11:44,730 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:11:44,730 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:11:44,730 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:11:44,730 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:11:44,731 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:11:44,731 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:11:44,731 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:11:44,731 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:11:44,731 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:11:44,731 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:11:44,732 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:11:44,732 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:11:44,732 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:11:44,732 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:11:44,732 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:11:44,732 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_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7b9ddf837d983b2f2db252b1327ae049806ab568e5bf2d0a60ffd182bd7d0fe [2024-11-28 04:11:45,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:11:45,020 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:11:45,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:11:45,024 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:11:45,024 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:11:45,026 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness_negated.i [2024-11-28 04:11:48,069 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/data/2038854b1/3aba5780e5d04cfb9b5f99a50e5219c5/FLAGc090b4f79 [2024-11-28 04:11:48,641 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:11:48,642 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness_negated.i [2024-11-28 04:11:48,683 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/data/2038854b1/3aba5780e5d04cfb9b5f99a50e5219c5/FLAGc090b4f79 [2024-11-28 04:11:48,697 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/data/2038854b1/3aba5780e5d04cfb9b5f99a50e5219c5 [2024-11-28 04:11:48,699 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:11:48,701 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:11:48,702 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:11:48,702 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:11:48,709 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:11:48,710 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:11:48" (1/1) ... [2024-11-28 04:11:48,713 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dcd00a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:11:48, skipping insertion in model container [2024-11-28 04:11:48,714 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:11:48" (1/1) ... [2024-11-28 04:11:48,804 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:11:49,122 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_6c835e4c-4908-4bde-8e08-0861ec95e249/sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness_negated.i[4493,4506] [2024-11-28 04:11:49,129 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_6c835e4c-4908-4bde-8e08-0861ec95e249/sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness_negated.i[4553,4566] [2024-11-28 04:11:50,101 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:11:50,102 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:11:50,102 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:11:50,103 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:11:50,105 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:11:50,124 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:11:50,125 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:11:50,127 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:11:50,128 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:11:50,130 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:11:50,131 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:11:50,132 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:11:50,133 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:11:50,825 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_6c835e4c-4908-4bde-8e08-0861ec95e249/sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness_negated.i[150674,150687] [2024-11-28 04:11:50,826 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:11:50,861 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:11:50,874 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_6c835e4c-4908-4bde-8e08-0861ec95e249/sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness_negated.i[4493,4506] [2024-11-28 04:11:50,875 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_6c835e4c-4908-4bde-8e08-0861ec95e249/sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness_negated.i[4553,4566] [2024-11-28 04:11:50,964 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:11:50,965 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:11:50,965 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:11:50,966 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:11:50,967 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:11:50,977 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:11:50,977 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:11:50,978 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:11:50,979 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:11:50,980 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:11:50,981 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:11:50,981 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:11:50,981 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:11:51,172 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_6c835e4c-4908-4bde-8e08-0861ec95e249/sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness_negated.i[150674,150687] [2024-11-28 04:11:51,173 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:11:51,334 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:11:51,335 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:11:51 WrapperNode [2024-11-28 04:11:51,335 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:11:51,336 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:11:51,336 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:11:51,336 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:11:51,343 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:11:51" (1/1) ... [2024-11-28 04:11:51,396 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:11:51" (1/1) ... [2024-11-28 04:11:51,426 INFO L138 Inliner]: procedures = 668, calls = 1038, calls flagged for inlining = 53, calls inlined = 6, statements flattened = 135 [2024-11-28 04:11:51,426 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:11:51,427 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:11:51,427 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:11:51,427 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:11:51,442 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:11:51" (1/1) ... [2024-11-28 04:11:51,442 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:11:51" (1/1) ... [2024-11-28 04:11:51,450 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:11:51" (1/1) ... [2024-11-28 04:11:51,490 INFO L175 MemorySlicer]: Split 21 memory accesses to 3 slices as follows [2, 5, 14]. 67 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]. [2024-11-28 04:11:51,490 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:11:51" (1/1) ... [2024-11-28 04:11:51,491 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:11:51" (1/1) ... [2024-11-28 04:11:51,513 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:11:51" (1/1) ... [2024-11-28 04:11:51,514 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:11:51" (1/1) ... [2024-11-28 04:11:51,523 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:11:51" (1/1) ... [2024-11-28 04:11:51,527 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:11:51" (1/1) ... [2024-11-28 04:11:51,528 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:11:51" (1/1) ... [2024-11-28 04:11:51,533 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:11:51,534 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:11:51,534 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:11:51,534 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:11:51,535 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:11:51" (1/1) ... [2024-11-28 04:11:51,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:11:51,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:51,580 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:11:51,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:11:51,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 04:11:51,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 04:11:51,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 04:11:51,616 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2024-11-28 04:11:51,616 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2024-11-28 04:11:51,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 04:11:51,617 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2024-11-28 04:11:51,617 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2024-11-28 04:11:51,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:11:51,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 04:11:51,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 04:11:51,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-28 04:11:51,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:11:51,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:11:51,619 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 04:11:51,619 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 04:11:51,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 04:11:51,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 04:11:51,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 04:11:51,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 04:11:51,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 04:11:51,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-28 04:11:51,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-28 04:11:51,620 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-28 04:11:51,621 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-28 04:11:51,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:11:51,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:11:51,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 04:11:51,935 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:11:51,937 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:11:52,302 INFO L? ?]: Removed 54 outVars from TransFormulas that were not future-live. [2024-11-28 04:11:52,302 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:11:52,318 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:11:52,318 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 04:11:52,319 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:11:52 BoogieIcfgContainer [2024-11-28 04:11:52,319 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:11:52,321 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:11:52,322 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:11:52,328 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:11:52,329 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:11:48" (1/3) ... [2024-11-28 04:11:52,330 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@443c7feb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:11:52, skipping insertion in model container [2024-11-28 04:11:52,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:11:51" (2/3) ... [2024-11-28 04:11:52,331 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@443c7feb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:11:52, skipping insertion in model container [2024-11-28 04:11:52,331 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:11:52" (3/3) ... [2024-11-28 04:11:52,332 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_linked_list_end_harness_negated.i [2024-11-28 04:11:52,353 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:11:52,355 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_linked_list_end_harness_negated.i that has 6 procedures, 68 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-28 04:11:52,428 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:11:52,441 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;@370ce1d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:11:52,441 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:11:52,448 INFO L276 IsEmpty]: Start isEmpty. Operand has 68 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 49 states have internal predecessors, (65), 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) [2024-11-28 04:11:52,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-28 04:11:52,458 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:52,459 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] [2024-11-28 04:11:52,460 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:52,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:52,468 INFO L85 PathProgramCache]: Analyzing trace with hash -721077294, now seen corresponding path program 1 times [2024-11-28 04:11:52,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:52,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997378439] [2024-11-28 04:11:52,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:52,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:52,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:52,976 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-28 04:11:52,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:52,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997378439] [2024-11-28 04:11:52,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997378439] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:52,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507249477] [2024-11-28 04:11:52,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:52,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:52,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:52,992 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:53,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:11:53,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:53,350 INFO L256 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 04:11:53,356 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:53,379 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-28 04:11:53,379 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:11:53,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507249477] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:11:53,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:11:53,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 04:11:53,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521009910] [2024-11-28 04:11:53,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:11:53,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:11:53,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:53,415 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:11:53,416 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:11:53,419 INFO L87 Difference]: Start difference. First operand has 68 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 49 states have internal predecessors, (65), 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) [2024-11-28 04:11:53,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:53,445 INFO L93 Difference]: Finished difference Result 128 states and 184 transitions. [2024-11-28 04:11:53,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:11:53,448 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 [2024-11-28 04:11:53,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:53,457 INFO L225 Difference]: With dead ends: 128 [2024-11-28 04:11:53,458 INFO L226 Difference]: Without dead ends: 63 [2024-11-28 04:11:53,463 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 [2024-11-28 04:11:53,468 INFO L435 NwaCegarLoop]: 87 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, 87 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 [2024-11-28 04:11:53,469 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:11:53,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-28 04:11:53,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-11-28 04:11:53,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 45 states have internal predecessors, (57), 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) [2024-11-28 04:11:53,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 82 transitions. [2024-11-28 04:11:53,524 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 82 transitions. Word has length 68 [2024-11-28 04:11:53,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:53,524 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 82 transitions. [2024-11-28 04:11:53,525 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) [2024-11-28 04:11:53,525 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 82 transitions. [2024-11-28 04:11:53,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-28 04:11:53,531 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:53,532 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] [2024-11-28 04:11:53,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 04:11:53,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:53,733 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:53,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:53,734 INFO L85 PathProgramCache]: Analyzing trace with hash -2007385264, now seen corresponding path program 1 times [2024-11-28 04:11:53,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:53,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894788986] [2024-11-28 04:11:53,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:53,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:53,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:54,913 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-28 04:11:54,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:54,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894788986] [2024-11-28 04:11:54,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894788986] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:54,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858840324] [2024-11-28 04:11:54,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:54,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:54,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:54,919 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:54,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:11:55,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:55,208 INFO L256 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-28 04:11:55,218 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:55,371 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 [2024-11-28 04:11:55,394 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 [2024-11-28 04:11:55,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:11:55,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:11:55,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:11:55,583 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 [2024-11-28 04:11:55,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:11:55,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:11:55,609 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 [2024-11-28 04:11:56,735 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-28 04:11:56,738 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:11:56,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858840324] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:11:56,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:11:56,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2024-11-28 04:11:56,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856134905] [2024-11-28 04:11:56,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:11:56,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:11:56,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:56,740 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:11:56,740 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:11:56,741 INFO L87 Difference]: Start difference. First operand 63 states and 82 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 04:12:00,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:12:01,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:12:01,615 INFO L93 Difference]: Finished difference Result 171 states and 231 transitions. [2024-11-28 04:12:01,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:12:01,616 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 68 [2024-11-28 04:12:01,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:12:01,619 INFO L225 Difference]: With dead ends: 171 [2024-11-28 04:12:01,620 INFO L226 Difference]: Without dead ends: 122 [2024-11-28 04:12:01,621 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:12:01,622 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 70 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:12:01,622 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 370 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-28 04:12:01,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-28 04:12:01,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 117. [2024-11-28 04:12:01,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 82 states have (on average 1.329268292682927) internal successors, (109), 85 states have internal predecessors, (109), 24 states have call successors, (24), 9 states have call predecessors, (24), 10 states have return successors, (24), 22 states have call predecessors, (24), 22 states have call successors, (24) [2024-11-28 04:12:01,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 157 transitions. [2024-11-28 04:12:01,651 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 157 transitions. Word has length 68 [2024-11-28 04:12:01,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:12:01,651 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 157 transitions. [2024-11-28 04:12:01,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 04:12:01,652 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 157 transitions. [2024-11-28 04:12:01,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-28 04:12:01,654 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:12:01,654 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 04:12:01,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 04:12:01,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:12:01,855 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:12:01,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:12:01,856 INFO L85 PathProgramCache]: Analyzing trace with hash 238194190, now seen corresponding path program 1 times [2024-11-28 04:12:01,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:12:01,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498448320] [2024-11-28 04:12:01,856 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:12:01,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:12:01,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:12:02,474 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-28 04:12:02,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:12:02,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498448320] [2024-11-28 04:12:02,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498448320] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:12:02,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640878851] [2024-11-28 04:12:02,475 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:12:02,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:12:02,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:12:02,478 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:12:02,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:12:02,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:12:02,731 INFO L256 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-28 04:12:02,737 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:12:02,865 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 [2024-11-28 04:12:02,888 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 [2024-11-28 04:12:03,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:12:03,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:12:03,048 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 [2024-11-28 04:12:03,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:12:03,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:12:03,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:12:03,108 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 [2024-11-28 04:12:06,596 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 04:12:06,596 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:12:06,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640878851] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:12:06,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:12:06,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2024-11-28 04:12:06,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815813752] [2024-11-28 04:12:06,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:12:06,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 04:12:06,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:12:06,599 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 04:12:06,599 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-28 04:12:06,599 INFO L87 Difference]: Start difference. First operand 117 states and 157 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 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) [2024-11-28 04:12:07,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:12:07,898 INFO L93 Difference]: Finished difference Result 171 states and 228 transitions. [2024-11-28 04:12:07,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:12:07,899 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 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 [2024-11-28 04:12:07,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:12:07,901 INFO L225 Difference]: With dead ends: 171 [2024-11-28 04:12:07,901 INFO L226 Difference]: Without dead ends: 120 [2024-11-28 04:12:07,902 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 53 SyntacticMatches, 8 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-11-28 04:12:07,903 INFO L435 NwaCegarLoop]: 62 mSDtfsCounter, 51 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:12:07,904 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 443 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 04:12:07,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-11-28 04:12:07,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 115. [2024-11-28 04:12:07,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 81 states have (on average 1.3209876543209877) internal successors, (107), 83 states have internal predecessors, (107), 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) [2024-11-28 04:12:07,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 153 transitions. [2024-11-28 04:12:07,926 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 153 transitions. Word has length 68 [2024-11-28 04:12:07,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:12:07,927 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 153 transitions. [2024-11-28 04:12:07,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 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) [2024-11-28 04:12:07,927 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 153 transitions. [2024-11-28 04:12:07,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-28 04:12:07,929 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:12:07,929 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] [2024-11-28 04:12:07,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 04:12:08,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:12:08,134 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:12:08,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:12:08,135 INFO L85 PathProgramCache]: Analyzing trace with hash -509112822, now seen corresponding path program 1 times [2024-11-28 04:12:08,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:12:08,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826422162] [2024-11-28 04:12:08,135 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:12:08,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:12:08,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:12:08,651 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-28 04:12:08,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:12:08,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826422162] [2024-11-28 04:12:08,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826422162] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:12:08,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:12:08,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:12:08,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228925189] [2024-11-28 04:12:08,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:12:08,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:12:08,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:12:08,653 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:12:08,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:12:08,653 INFO L87 Difference]: Start difference. First operand 115 states and 153 transitions. Second operand has 6 states, 5 states have (on average 5.8) internal successors, (29), 4 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), 1 states have call successors, (7) [2024-11-28 04:12:08,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:12:08,803 INFO L93 Difference]: Finished difference Result 133 states and 178 transitions. [2024-11-28 04:12:08,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:12:08,804 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 4 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), 1 states have call successors, (7) Word has length 68 [2024-11-28 04:12:08,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:12:08,806 INFO L225 Difference]: With dead ends: 133 [2024-11-28 04:12:08,806 INFO L226 Difference]: Without dead ends: 131 [2024-11-28 04:12:08,807 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:12:08,807 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 3 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:12:08,808 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 387 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:12:08,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-28 04:12:08,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 129. [2024-11-28 04:12:08,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 89 states have (on average 1.2921348314606742) internal successors, (115), 93 states have internal predecessors, (115), 26 states have call successors, (26), 11 states have call predecessors, (26), 13 states have return successors, (32), 24 states have call predecessors, (32), 24 states have call successors, (32) [2024-11-28 04:12:08,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 173 transitions. [2024-11-28 04:12:08,831 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 173 transitions. Word has length 68 [2024-11-28 04:12:08,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:12:08,832 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 173 transitions. [2024-11-28 04:12:08,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 4 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), 1 states have call successors, (7) [2024-11-28 04:12:08,832 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 173 transitions. [2024-11-28 04:12:08,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-28 04:12:08,834 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:12:08,834 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] [2024-11-28 04:12:08,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:12:08,834 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:12:08,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:12:08,835 INFO L85 PathProgramCache]: Analyzing trace with hash 359425096, now seen corresponding path program 1 times [2024-11-28 04:12:08,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:12:08,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996925021] [2024-11-28 04:12:08,835 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:12:08,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:12:08,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:12:09,398 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-28 04:12:09,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:12:09,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996925021] [2024-11-28 04:12:09,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996925021] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:12:09,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836272056] [2024-11-28 04:12:09,399 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:12:09,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:12:09,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:12:09,404 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:12:09,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:12:09,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:12:09,592 INFO L256 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 04:12:09,596 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:12:10,090 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 04:12:10,090 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:12:10,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836272056] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:12:10,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:12:10,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2024-11-28 04:12:10,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042161355] [2024-11-28 04:12:10,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:12:10,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:12:10,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:12:10,091 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:12:10,092 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:12:10,092 INFO L87 Difference]: Start difference. First operand 129 states and 173 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 04:12:10,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:12:10,726 INFO L93 Difference]: Finished difference Result 250 states and 337 transitions. [2024-11-28 04:12:10,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:12:10,727 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2024-11-28 04:12:10,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:12:10,730 INFO L225 Difference]: With dead ends: 250 [2024-11-28 04:12:10,730 INFO L226 Difference]: Without dead ends: 133 [2024-11-28 04:12:10,736 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2024-11-28 04:12:10,737 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 95 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:12:10,737 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 310 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:12:10,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-28 04:12:10,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 129. [2024-11-28 04:12:10,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 89 states have (on average 1.2696629213483146) internal successors, (113), 93 states have internal predecessors, (113), 26 states have call successors, (26), 11 states have call predecessors, (26), 13 states have return successors, (32), 24 states have call predecessors, (32), 24 states have call successors, (32) [2024-11-28 04:12:10,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 171 transitions. [2024-11-28 04:12:10,767 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 171 transitions. Word has length 70 [2024-11-28 04:12:10,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:12:10,767 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 171 transitions. [2024-11-28 04:12:10,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 04:12:10,768 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 171 transitions. [2024-11-28 04:12:10,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-28 04:12:10,769 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:12:10,769 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] [2024-11-28 04:12:10,780 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:12:10,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:12:10,970 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:12:10,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:12:10,970 INFO L85 PathProgramCache]: Analyzing trace with hash -451475402, now seen corresponding path program 1 times [2024-11-28 04:12:10,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:12:10,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945236169] [2024-11-28 04:12:10,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:12:10,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:12:11,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:12:11,634 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-28 04:12:11,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:12:11,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945236169] [2024-11-28 04:12:11,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945236169] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:12:11,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436768636] [2024-11-28 04:12:11,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:12:11,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:12:11,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:12:11,639 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:12:11,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:12:11,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:12:11,863 INFO L256 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 04:12:11,867 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:12:12,532 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 04:12:12,533 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:12:12,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436768636] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:12:12,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:12:12,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2024-11-28 04:12:12,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611892236] [2024-11-28 04:12:12,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:12:12,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:12:12,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:12:12,535 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:12:12,536 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2024-11-28 04:12:12,536 INFO L87 Difference]: Start difference. First operand 129 states and 171 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 04:12:13,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:12:13,422 INFO L93 Difference]: Finished difference Result 262 states and 353 transitions. [2024-11-28 04:12:13,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:12:13,423 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2024-11-28 04:12:13,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:12:13,425 INFO L225 Difference]: With dead ends: 262 [2024-11-28 04:12:13,425 INFO L226 Difference]: Without dead ends: 143 [2024-11-28 04:12:13,427 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2024-11-28 04:12:13,428 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 109 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:12:13,428 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 347 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:12:13,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-28 04:12:13,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 131. [2024-11-28 04:12:13,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 91 states have (on average 1.2637362637362637) internal successors, (115), 95 states have internal predecessors, (115), 26 states have call successors, (26), 11 states have call predecessors, (26), 13 states have return successors, (32), 24 states have call predecessors, (32), 24 states have call successors, (32) [2024-11-28 04:12:13,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 173 transitions. [2024-11-28 04:12:13,457 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 173 transitions. Word has length 72 [2024-11-28 04:12:13,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:12:13,458 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 173 transitions. [2024-11-28 04:12:13,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 04:12:13,458 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 173 transitions. [2024-11-28 04:12:13,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-28 04:12:13,460 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:12:13,460 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] [2024-11-28 04:12:13,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 04:12:13,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:12:13,664 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:12:13,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:12:13,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1867965090, now seen corresponding path program 1 times [2024-11-28 04:12:13,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:12:13,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826906297] [2024-11-28 04:12:13,665 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:12:13,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:12:13,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:12:14,158 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 04:12:14,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:12:14,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826906297] [2024-11-28 04:12:14,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826906297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:12:14,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:12:14,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 04:12:14,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351598272] [2024-11-28 04:12:14,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:12:14,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:12:14,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:12:14,160 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:12:14,160 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:12:14,160 INFO L87 Difference]: Start difference. First operand 131 states and 173 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 04:12:14,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:12:14,569 INFO L93 Difference]: Finished difference Result 264 states and 353 transitions. [2024-11-28 04:12:14,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:12:14,570 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 73 [2024-11-28 04:12:14,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:12:14,572 INFO L225 Difference]: With dead ends: 264 [2024-11-28 04:12:14,572 INFO L226 Difference]: Without dead ends: 143 [2024-11-28 04:12:14,573 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:12:14,574 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 28 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:12:14,574 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 408 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:12:14,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-28 04:12:14,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 133. [2024-11-28 04:12:14,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 93 states have (on average 1.2580645161290323) internal successors, (117), 97 states have internal predecessors, (117), 26 states have call successors, (26), 11 states have call predecessors, (26), 13 states have return successors, (32), 24 states have call predecessors, (32), 24 states have call successors, (32) [2024-11-28 04:12:14,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 175 transitions. [2024-11-28 04:12:14,603 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 175 transitions. Word has length 73 [2024-11-28 04:12:14,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:12:14,604 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 175 transitions. [2024-11-28 04:12:14,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 04:12:14,604 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 175 transitions. [2024-11-28 04:12:14,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-28 04:12:14,605 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:12:14,606 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 04:12:14,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 04:12:14,606 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:12:14,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:12:14,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1253842155, now seen corresponding path program 1 times [2024-11-28 04:12:14,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:12:14,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755330722] [2024-11-28 04:12:14,607 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:12:14,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:12:14,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:12:14,956 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-28 04:12:14,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:12:14,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755330722] [2024-11-28 04:12:14,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755330722] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:12:14,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588717479] [2024-11-28 04:12:14,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:12:14,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:12:14,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:12:14,961 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:12:14,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:12:15,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:12:15,178 INFO L256 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-28 04:12:15,182 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:12:15,561 INFO L349 Elim1Store]: treesize reduction 66, result has 39.4 percent of original size [2024-11-28 04:12:15,561 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 [2024-11-28 04:12:15,590 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 [2024-11-28 04:12:15,620 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:12:15,621 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 [2024-11-28 04:12:15,724 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:12:15,725 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 [2024-11-28 04:12:15,732 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 [2024-11-28 04:12:19,915 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_18| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset_BEFORE_CALL_10| Int)) (let ((.cse2 (+ |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset_BEFORE_CALL_10| 24))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_18|) .cse2))) (and (<= |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_18| .cse0) (exists ((v_DerPreprocessor_1 (Array Int Int))) (let ((.cse1 (select |c_#memory_$Pointer$#2.base| .cse0))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse0 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_18| (store .cse1 .cse2 .cse0)) .cse0) .cse1))))))) (<= 2 |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_18|))) (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_18| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset_BEFORE_CALL_10| Int)) (= (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_18|) (+ |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset_BEFORE_CALL_10| 24)) |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_18|)) (<= 2 |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_18|)))) is different from true [2024-11-28 04:12:24,641 WARN L873 $PredicateComparison]: unable to prove that (and (or (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_18| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset_BEFORE_CALL_10| Int)) (let ((.cse2 (+ |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset_BEFORE_CALL_10| 24))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_18|) .cse2))) (and (<= |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_18| .cse0) (exists ((v_DerPreprocessor_1 (Array Int Int))) (let ((.cse1 (select |c_#memory_$Pointer$#2.base| .cse0))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse0 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_18| (store .cse1 .cse2 .cse0)) .cse0) .cse1))))))) (<= 2 |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_18|))) (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_18| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset_BEFORE_CALL_10| Int)) (= (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_18|) (+ |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset_BEFORE_CALL_10| 24)) |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_18|)) (<= 2 |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_18|)))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_19| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_19|) (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset_BEFORE_CALL_11| Int)) (let ((.cse5 (+ |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset_BEFORE_CALL_11| 24))) (let ((.cse3 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_19|) .cse5))) (and (exists ((v_DerPreprocessor_1 (Array Int Int))) (let ((.cse4 (select |c_#memory_$Pointer$#2.base| .cse3))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse3 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_19| (store .cse4 .cse5 .cse3)) .cse3) .cse4))) (<= |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_19| .cse3))))))) (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_19| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset_BEFORE_CALL_11| Int)) (= (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_19|) (+ |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset_BEFORE_CALL_11| 24)) |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_19|)) (<= 2 |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_19|))))) is different from true [2024-11-28 04:12:32,033 WARN L873 $PredicateComparison]: unable to prove that (and (or (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_18| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset_BEFORE_CALL_10| Int)) (let ((.cse2 (+ |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset_BEFORE_CALL_10| 24))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_18|) .cse2))) (and (<= |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_18| .cse0) (exists ((v_DerPreprocessor_1 (Array Int Int))) (let ((.cse1 (select |c_#memory_$Pointer$#2.base| .cse0))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse0 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_18| (store .cse1 .cse2 .cse0)) .cse0) .cse1))))))) (<= 2 |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_18|))) (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_18| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset_BEFORE_CALL_10| Int)) (= (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_18|) (+ |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset_BEFORE_CALL_10| 24)) |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_18|)) (<= 2 |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_18|)))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_19| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_19|) (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset_BEFORE_CALL_11| Int)) (let ((.cse5 (+ |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset_BEFORE_CALL_11| 24))) (let ((.cse3 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_19|) .cse5))) (and (exists ((v_DerPreprocessor_1 (Array Int Int))) (let ((.cse4 (select |c_#memory_$Pointer$#2.base| .cse3))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse3 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_19| (store .cse4 .cse5 .cse3)) .cse3) .cse4))) (<= |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_19| .cse3))))))) (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_19| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset_BEFORE_CALL_11| Int)) (= (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_19|) (+ |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset_BEFORE_CALL_11| 24)) |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_19|)) (<= 2 |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_19|)))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_10| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_end_~list#1.offset_BEFORE_CALL_4| Int)) (= |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_10| (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_10|) (+ |v_ULTIMATE.start_aws_linked_list_end_~list#1.offset_BEFORE_CALL_4| 24)))) (<= 2 |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_10|))) (exists ((|v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_10| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_10|) (exists ((|v_ULTIMATE.start_aws_linked_list_end_~list#1.offset_BEFORE_CALL_4| Int)) (let ((.cse8 (+ |v_ULTIMATE.start_aws_linked_list_end_~list#1.offset_BEFORE_CALL_4| 24))) (let ((.cse7 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_10|) .cse8))) (and (exists ((v_DerPreprocessor_1 (Array Int Int))) (let ((.cse6 (select |c_#memory_$Pointer$#2.base| .cse7))) (= .cse6 (select (store (store |c_#memory_$Pointer$#2.base| .cse7 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_10| (store .cse6 .cse8 .cse7)) .cse7)))) (<= |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_10| .cse7))))))))) is different from true [2024-11-28 04:12:33,978 WARN L873 $PredicateComparison]: unable to prove that (and (or (exists ((|v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_11| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_end_~list#1.offset_BEFORE_CALL_5| Int)) (let ((.cse2 (+ |v_ULTIMATE.start_aws_linked_list_end_~list#1.offset_BEFORE_CALL_5| 24))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_11|) .cse2))) (and (exists ((v_DerPreprocessor_1 (Array Int Int))) (let ((.cse1 (select |c_#memory_$Pointer$#2.base| .cse0))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse0 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_11| (store .cse1 .cse2 .cse0)) .cse0) .cse1))) (<= |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_11| .cse0))))) (<= 2 |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_11|))) (exists ((|v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_11| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_11|) (exists ((|v_ULTIMATE.start_aws_linked_list_end_~list#1.offset_BEFORE_CALL_5| Int)) (= |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_11| (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_11|) (+ |v_ULTIMATE.start_aws_linked_list_end_~list#1.offset_BEFORE_CALL_5| 24))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_18| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset_BEFORE_CALL_10| Int)) (let ((.cse5 (+ |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset_BEFORE_CALL_10| 24))) (let ((.cse3 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_18|) .cse5))) (and (<= |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_18| .cse3) (exists ((v_DerPreprocessor_1 (Array Int Int))) (let ((.cse4 (select |c_#memory_$Pointer$#2.base| .cse3))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse3 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_18| (store .cse4 .cse5 .cse3)) .cse3) .cse4))))))) (<= 2 |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_18|))) (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_18| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset_BEFORE_CALL_10| Int)) (= (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_18|) (+ |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset_BEFORE_CALL_10| 24)) |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_18|)) (<= 2 |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_18|)))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_19| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_19|) (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset_BEFORE_CALL_11| Int)) (let ((.cse8 (+ |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset_BEFORE_CALL_11| 24))) (let ((.cse6 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_19|) .cse8))) (and (exists ((v_DerPreprocessor_1 (Array Int Int))) (let ((.cse7 (select |c_#memory_$Pointer$#2.base| .cse6))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse6 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_19| (store .cse7 .cse8 .cse6)) .cse6) .cse7))) (<= |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_19| .cse6))))))) (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_19| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset_BEFORE_CALL_11| Int)) (= (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_19|) (+ |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset_BEFORE_CALL_11| 24)) |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_19|)) (<= 2 |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_19|)))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_10| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_end_~list#1.offset_BEFORE_CALL_4| Int)) (= |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_10| (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_10|) (+ |v_ULTIMATE.start_aws_linked_list_end_~list#1.offset_BEFORE_CALL_4| 24)))) (<= 2 |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_10|))) (exists ((|v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_10| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_10|) (exists ((|v_ULTIMATE.start_aws_linked_list_end_~list#1.offset_BEFORE_CALL_4| Int)) (let ((.cse11 (+ |v_ULTIMATE.start_aws_linked_list_end_~list#1.offset_BEFORE_CALL_4| 24))) (let ((.cse10 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_10|) .cse11))) (and (exists ((v_DerPreprocessor_1 (Array Int Int))) (let ((.cse9 (select |c_#memory_$Pointer$#2.base| .cse10))) (= .cse9 (select (store (store |c_#memory_$Pointer$#2.base| .cse10 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_10| (store .cse9 .cse11 .cse10)) .cse10)))) (<= |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_10| .cse10))))))))) is different from true [2024-11-28 04:12:43,565 WARN L873 $PredicateComparison]: unable to prove that (and (or (exists ((|v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_11| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_end_~list#1.offset_BEFORE_CALL_5| Int)) (let ((.cse2 (+ |v_ULTIMATE.start_aws_linked_list_end_~list#1.offset_BEFORE_CALL_5| 24))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_11|) .cse2))) (and (exists ((v_DerPreprocessor_1 (Array Int Int))) (let ((.cse1 (select |c_#memory_$Pointer$#2.base| .cse0))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse0 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_11| (store .cse1 .cse2 .cse0)) .cse0) .cse1))) (<= |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_11| .cse0))))) (<= 2 |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_11|))) (exists ((|v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_11| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_11|) (exists ((|v_ULTIMATE.start_aws_linked_list_end_~list#1.offset_BEFORE_CALL_5| Int)) (= |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_11| (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_11|) (+ |v_ULTIMATE.start_aws_linked_list_end_~list#1.offset_BEFORE_CALL_5| 24))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_12| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_12|) (exists ((|v_ULTIMATE.start_aws_linked_list_end_~list#1.offset_BEFORE_CALL_6| Int)) (= (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_12|) (+ |v_ULTIMATE.start_aws_linked_list_end_~list#1.offset_BEFORE_CALL_6| 24)) |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_12|)))) (exists ((|v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_12| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_end_~list#1.offset_BEFORE_CALL_6| Int)) (let ((.cse5 (+ |v_ULTIMATE.start_aws_linked_list_end_~list#1.offset_BEFORE_CALL_6| 24))) (let ((.cse3 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_12|) .cse5))) (and (exists ((v_DerPreprocessor_1 (Array Int Int))) (let ((.cse4 (select |c_#memory_$Pointer$#2.base| .cse3))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse3 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_12| (store .cse4 .cse5 .cse3)) .cse3) .cse4))) (<= |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_12| .cse3))))) (<= 2 |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_12|)))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_18| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset_BEFORE_CALL_10| Int)) (let ((.cse8 (+ |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset_BEFORE_CALL_10| 24))) (let ((.cse6 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_18|) .cse8))) (and (<= |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_18| .cse6) (exists ((v_DerPreprocessor_1 (Array Int Int))) (let ((.cse7 (select |c_#memory_$Pointer$#2.base| .cse6))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse6 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_18| (store .cse7 .cse8 .cse6)) .cse6) .cse7))))))) (<= 2 |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_18|))) (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_18| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset_BEFORE_CALL_10| Int)) (= (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_18|) (+ |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset_BEFORE_CALL_10| 24)) |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_18|)) (<= 2 |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_18|)))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_19| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_19|) (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset_BEFORE_CALL_11| Int)) (let ((.cse11 (+ |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset_BEFORE_CALL_11| 24))) (let ((.cse9 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_19|) .cse11))) (and (exists ((v_DerPreprocessor_1 (Array Int Int))) (let ((.cse10 (select |c_#memory_$Pointer$#2.base| .cse9))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse9 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_19| (store .cse10 .cse11 .cse9)) .cse9) .cse10))) (<= |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_19| .cse9))))))) (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_19| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset_BEFORE_CALL_11| Int)) (= (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_19|) (+ |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset_BEFORE_CALL_11| 24)) |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_19|)) (<= 2 |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_19|)))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_10| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_end_~list#1.offset_BEFORE_CALL_4| Int)) (= |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_10| (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_10|) (+ |v_ULTIMATE.start_aws_linked_list_end_~list#1.offset_BEFORE_CALL_4| 24)))) (<= 2 |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_10|))) (exists ((|v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_10| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_10|) (exists ((|v_ULTIMATE.start_aws_linked_list_end_~list#1.offset_BEFORE_CALL_4| Int)) (let ((.cse14 (+ |v_ULTIMATE.start_aws_linked_list_end_~list#1.offset_BEFORE_CALL_4| 24))) (let ((.cse13 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_10|) .cse14))) (and (exists ((v_DerPreprocessor_1 (Array Int Int))) (let ((.cse12 (select |c_#memory_$Pointer$#2.base| .cse13))) (= .cse12 (select (store (store |c_#memory_$Pointer$#2.base| .cse13 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_10| (store .cse12 .cse14 .cse13)) .cse13)))) (<= |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_10| .cse13))))))))) is different from true [2024-11-28 04:12:47,607 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 37 not checked. [2024-11-28 04:12:47,608 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:12:48,941 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:12:48,941 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 234 treesize of output 232 [2024-11-28 04:12:48,955 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 [2024-11-28 04:12:49,063 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 [2024-11-28 04:12:50,023 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 04:12:50,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588717479] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 04:12:50,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:12:50,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [6, 20] total 33 [2024-11-28 04:12:50,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037107703] [2024-11-28 04:12:50,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:12:50,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:12:50,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:12:50,028 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:12:50,029 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=660, Unknown=24, NotChecked=280, Total=1056 [2024-11-28 04:12:50,029 INFO L87 Difference]: Start difference. First operand 133 states and 175 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-28 04:12:51,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:12:51,752 INFO L93 Difference]: Finished difference Result 225 states and 308 transitions. [2024-11-28 04:12:51,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 04:12:51,753 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 74 [2024-11-28 04:12:51,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:12:51,755 INFO L225 Difference]: With dead ends: 225 [2024-11-28 04:12:51,755 INFO L226 Difference]: Without dead ends: 152 [2024-11-28 04:12:51,757 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 28.9s TimeCoverageRelationStatistics Valid=138, Invalid=1117, Unknown=25, NotChecked=360, Total=1640 [2024-11-28 04:12:51,757 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 149 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:12:51,758 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 430 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 04:12:51,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-11-28 04:12:51,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 135. [2024-11-28 04:12:51,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 95 states have (on average 1.2526315789473683) internal successors, (119), 99 states have internal predecessors, (119), 26 states have call successors, (26), 11 states have call predecessors, (26), 13 states have return successors, (32), 24 states have call predecessors, (32), 24 states have call successors, (32) [2024-11-28 04:12:51,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 177 transitions. [2024-11-28 04:12:51,786 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 177 transitions. Word has length 74 [2024-11-28 04:12:51,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:12:51,787 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 177 transitions. [2024-11-28 04:12:51,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-28 04:12:51,787 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 177 transitions. [2024-11-28 04:12:51,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-28 04:12:51,788 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:12:51,789 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 04:12:51,799 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 04:12:51,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-28 04:12:51,989 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:12:51,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:12:51,990 INFO L85 PathProgramCache]: Analyzing trace with hash -472869467, now seen corresponding path program 1 times [2024-11-28 04:12:51,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:12:51,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081839428] [2024-11-28 04:12:51,990 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:12:51,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:12:52,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:12:52,394 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-28 04:12:52,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:12:52,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081839428] [2024-11-28 04:12:52,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081839428] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:12:52,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234023803] [2024-11-28 04:12:52,395 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:12:52,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:12:52,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:12:52,398 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:12:52,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:12:52,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:12:52,628 INFO L256 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-28 04:12:52,633 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:12:52,721 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 [2024-11-28 04:12:52,743 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 [2024-11-28 04:12:52,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:12:52,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:12:52,921 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 [2024-11-28 04:12:52,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:12:52,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:12:52,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:12:52,982 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 [2024-11-28 04:12:55,381 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:12:55,381 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:12:55,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234023803] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:12:55,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:12:55,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2024-11-28 04:12:55,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210163938] [2024-11-28 04:12:55,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:12:55,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:12:55,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:12:55,385 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:12:55,385 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:12:55,386 INFO L87 Difference]: Start difference. First operand 135 states and 177 transitions. Second operand has 11 states, 10 states have (on average 5.6) internal successors, (56), 11 states have internal predecessors, (56), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-28 04:12:57,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:12:57,138 INFO L93 Difference]: Finished difference Result 218 states and 289 transitions. [2024-11-28 04:12:57,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:12:57,139 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.6) internal successors, (56), 11 states have internal predecessors, (56), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 74 [2024-11-28 04:12:57,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:12:57,141 INFO L225 Difference]: With dead ends: 218 [2024-11-28 04:12:57,141 INFO L226 Difference]: Without dead ends: 140 [2024-11-28 04:12:57,142 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 62 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2024-11-28 04:12:57,142 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 84 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:12:57,144 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 429 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 04:12:57,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-28 04:12:57,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 137. [2024-11-28 04:12:57,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 97 states have (on average 1.2474226804123711) internal successors, (121), 101 states have internal predecessors, (121), 26 states have call successors, (26), 11 states have call predecessors, (26), 13 states have return successors, (32), 24 states have call predecessors, (32), 24 states have call successors, (32) [2024-11-28 04:12:57,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 179 transitions. [2024-11-28 04:12:57,186 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 179 transitions. Word has length 74 [2024-11-28 04:12:57,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:12:57,186 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 179 transitions. [2024-11-28 04:12:57,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.6) internal successors, (56), 11 states have internal predecessors, (56), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-28 04:12:57,187 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 179 transitions. [2024-11-28 04:12:57,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-28 04:12:57,188 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:12:57,188 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 04:12:57,200 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 04:12:57,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-28 04:12:57,393 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:12:57,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:12:57,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1985361953, now seen corresponding path program 1 times [2024-11-28 04:12:57,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:12:57,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649080590] [2024-11-28 04:12:57,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:12:57,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:12:57,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:12:58,251 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 04:12:58,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:12:58,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649080590] [2024-11-28 04:12:58,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649080590] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:12:58,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968533709] [2024-11-28 04:12:58,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:12:58,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:12:58,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:12:58,256 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:12:58,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:12:58,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:12:58,486 INFO L256 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-28 04:12:58,490 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:12:58,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:12:58,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2024-11-28 04:13:00,130 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-28 04:13:00,130 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:13:00,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968533709] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:13:00,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:13:00,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [9] total 16 [2024-11-28 04:13:00,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731379355] [2024-11-28 04:13:00,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:13:00,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:13:00,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:13:00,131 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:13:00,131 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:13:00,132 INFO L87 Difference]: Start difference. First operand 137 states and 179 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-28 04:13:01,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:13:01,188 INFO L93 Difference]: Finished difference Result 226 states and 298 transitions. [2024-11-28 04:13:01,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 04:13:01,189 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 74 [2024-11-28 04:13:01,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:13:01,190 INFO L225 Difference]: With dead ends: 226 [2024-11-28 04:13:01,190 INFO L226 Difference]: Without dead ends: 142 [2024-11-28 04:13:01,191 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 60 SyntacticMatches, 8 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2024-11-28 04:13:01,192 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 75 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:13:01,192 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 476 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 04:13:01,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-28 04:13:01,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 139. [2024-11-28 04:13:01,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 99 states have (on average 1.2424242424242424) internal successors, (123), 103 states have internal predecessors, (123), 26 states have call successors, (26), 11 states have call predecessors, (26), 13 states have return successors, (32), 24 states have call predecessors, (32), 24 states have call successors, (32) [2024-11-28 04:13:01,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 181 transitions. [2024-11-28 04:13:01,218 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 181 transitions. Word has length 74 [2024-11-28 04:13:01,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:13:01,218 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 181 transitions. [2024-11-28 04:13:01,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-28 04:13:01,218 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 181 transitions. [2024-11-28 04:13:01,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-28 04:13:01,219 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:13:01,220 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 04:13:01,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 04:13:01,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:13:01,424 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:13:01,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:13:01,425 INFO L85 PathProgramCache]: Analyzing trace with hash 503272345, now seen corresponding path program 1 times [2024-11-28 04:13:01,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:13:01,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041057062] [2024-11-28 04:13:01,425 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:13:01,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:13:01,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:13:01,619 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 04:13:01,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:13:01,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041057062] [2024-11-28 04:13:01,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041057062] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:13:01,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727491602] [2024-11-28 04:13:01,620 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:13:01,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:13:01,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:13:01,622 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:13:01,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:13:01,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:13:01,849 INFO L256 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:13:01,851 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:13:02,088 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 04:13:02,089 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:13:02,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727491602] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:13:02,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:13:02,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-28 04:13:02,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339069285] [2024-11-28 04:13:02,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:13:02,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:13:02,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:13:02,091 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:13:02,091 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:13:02,091 INFO L87 Difference]: Start difference. First operand 139 states and 181 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 04:13:02,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:13:02,449 INFO L93 Difference]: Finished difference Result 296 states and 394 transitions. [2024-11-28 04:13:02,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:13:02,450 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 74 [2024-11-28 04:13:02,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:13:02,452 INFO L225 Difference]: With dead ends: 296 [2024-11-28 04:13:02,453 INFO L226 Difference]: Without dead ends: 175 [2024-11-28 04:13:02,455 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:13:02,455 INFO L435 NwaCegarLoop]: 82 mSDtfsCounter, 93 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:13:02,456 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 273 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:13:02,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-11-28 04:13:02,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2024-11-28 04:13:02,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 130 states have (on average 1.2615384615384615) internal successors, (164), 137 states have internal predecessors, (164), 28 states have call successors, (28), 11 states have call predecessors, (28), 16 states have return successors, (38), 26 states have call predecessors, (38), 26 states have call successors, (38) [2024-11-28 04:13:02,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 230 transitions. [2024-11-28 04:13:02,492 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 230 transitions. Word has length 74 [2024-11-28 04:13:02,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:13:02,492 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 230 transitions. [2024-11-28 04:13:02,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 04:13:02,493 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 230 transitions. [2024-11-28 04:13:02,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-28 04:13:02,494 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:13:02,494 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:13:02,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 04:13:02,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:13:02,699 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:13:02,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:13:02,700 INFO L85 PathProgramCache]: Analyzing trace with hash 2145638637, now seen corresponding path program 1 times [2024-11-28 04:13:02,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:13:02,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113210570] [2024-11-28 04:13:02,700 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:13:02,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:13:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:13:03,097 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 04:13:03,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:13:03,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113210570] [2024-11-28 04:13:03,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113210570] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:13:03,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615413458] [2024-11-28 04:13:03,098 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:13:03,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:13:03,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:13:03,100 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:13:03,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 04:13:03,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:13:03,363 INFO L256 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-28 04:13:03,368 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:13:03,480 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 [2024-11-28 04:13:03,500 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 [2024-11-28 04:13:03,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:13:03,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:13:03,652 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 [2024-11-28 04:13:03,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:13:03,665 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 [2024-11-28 04:13:03,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:13:03,686 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 [2024-11-28 04:13:03,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:13:03,697 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 25 treesize of output 18 [2024-11-28 04:13:03,918 INFO L349 Elim1Store]: treesize reduction 42, result has 20.8 percent of original size [2024-11-28 04:13:03,919 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 116 treesize of output 120 [2024-11-28 04:13:03,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:13:03,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:13:03,932 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 100 treesize of output 91 [2024-11-28 04:13:03,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:13:03,954 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 69 treesize of output 26 [2024-11-28 04:13:03,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:13:03,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:13:03,990 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 [2024-11-28 04:13:03,998 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 [2024-11-28 04:13:05,247 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 04:13:05,247 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:13:05,968 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 24)) (.cse2 (+ |c_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset| 16))) (and (forall ((v_ArrVal_786 (Array Int Int))) (= 0 (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_786))) (store .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|))) |c_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base|) .cse2))) (forall ((|ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| Int) (v_ArrVal_784 (Array Int Int))) (= (select (select (let ((.cse3 (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_784))) (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_end_harness_~#list~0#1.base|) .cse2) 0)))) is different from false [2024-11-28 04:13:06,075 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 24)) (.cse2 (+ |c_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset| 16))) (and (forall ((v_ArrVal_782 Int)) (or (< |c_#StackHeapBarrier| (+ v_ArrVal_782 1)) (forall ((v_ArrVal_779 Int) (v_ArrVal_784 (Array Int Int)) (v_subst_1 Int)) (= (select (select (let ((.cse0 (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store (select |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_779)) v_ArrVal_782 v_ArrVal_784))) (store .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_subst_1))) |c_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base|) .cse2) 0)))) (forall ((v_ArrVal_782 Int)) (or (forall ((v_ArrVal_786 (Array Int Int))) (= (select (select (let ((.cse3 (store (store |c_#memory_$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_782)) v_ArrVal_782 v_ArrVal_786))) (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_ArrVal_782))) |c_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base|) .cse2) 0)) (< |c_#StackHeapBarrier| (+ v_ArrVal_782 1)))))) is different from false [2024-11-28 04:13:06,146 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:13:06,148 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:13:06,322 INFO L349 Elim1Store]: treesize reduction 86, result has 45.2 percent of original size [2024-11-28 04:13:06,322 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 [2024-11-28 04:13:06,359 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:13:06,360 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:13:06,628 INFO L349 Elim1Store]: treesize reduction 86, result has 45.2 percent of original size [2024-11-28 04:13:06,629 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 363 treesize of output 350 [2024-11-28 04:13:06,685 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:13:06,685 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 294 [2024-11-28 04:13:06,712 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 253 treesize of output 241 [2024-11-28 04:13:06,759 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:13:06,759 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 348 treesize of output 322 [2024-11-28 04:13:06,789 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 289 treesize of output 277 [2024-11-28 04:13:08,100 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 [2024-11-28 04:13:08,236 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 7 treesize of output 3 [2024-11-28 04:13:08,343 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:13:08,372 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:13:08,373 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 74 treesize of output 80 [2024-11-28 04:13:08,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-28 04:13:08,746 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 25 trivial. 1 not checked. [2024-11-28 04:13:08,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615413458] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:13:08,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:13:08,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 9] total 21 [2024-11-28 04:13:08,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470791687] [2024-11-28 04:13:08,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:13:08,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 04:13:08,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:13:08,749 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 04:13:08,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=292, Unknown=2, NotChecked=70, Total=420 [2024-11-28 04:13:08,749 INFO L87 Difference]: Start difference. First operand 175 states and 230 transitions. Second operand has 21 states, 20 states have (on average 4.5) internal successors, (90), 19 states have internal predecessors, (90), 7 states have call successors, (23), 3 states have call predecessors, (23), 6 states have return successors, (22), 5 states have call predecessors, (22), 7 states have call successors, (22) [2024-11-28 04:13:11,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:13:11,371 INFO L93 Difference]: Finished difference Result 426 states and 572 transitions. [2024-11-28 04:13:11,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 04:13:11,372 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.5) internal successors, (90), 19 states have internal predecessors, (90), 7 states have call successors, (23), 3 states have call predecessors, (23), 6 states have return successors, (22), 5 states have call predecessors, (22), 7 states have call successors, (22) Word has length 76 [2024-11-28 04:13:11,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:13:11,375 INFO L225 Difference]: With dead ends: 426 [2024-11-28 04:13:11,375 INFO L226 Difference]: Without dead ends: 274 [2024-11-28 04:13:11,377 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=134, Invalid=802, Unknown=2, NotChecked=118, Total=1056 [2024-11-28 04:13:11,378 INFO L435 NwaCegarLoop]: 92 mSDtfsCounter, 101 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 321 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:13:11,378 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 952 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 462 Invalid, 0 Unknown, 321 Unchecked, 1.5s Time] [2024-11-28 04:13:11,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2024-11-28 04:13:11,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 257. [2024-11-28 04:13:11,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 191 states have (on average 1.2827225130890052) internal successors, (245), 202 states have internal predecessors, (245), 41 states have call successors, (41), 16 states have call predecessors, (41), 24 states have return successors, (53), 38 states have call predecessors, (53), 38 states have call successors, (53) [2024-11-28 04:13:11,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 339 transitions. [2024-11-28 04:13:11,428 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 339 transitions. Word has length 76 [2024-11-28 04:13:11,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:13:11,429 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 339 transitions. [2024-11-28 04:13:11,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.5) internal successors, (90), 19 states have internal predecessors, (90), 7 states have call successors, (23), 3 states have call predecessors, (23), 6 states have return successors, (22), 5 states have call predecessors, (22), 7 states have call successors, (22) [2024-11-28 04:13:11,429 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 339 transitions. [2024-11-28 04:13:11,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-28 04:13:11,432 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:13:11,432 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:13:11,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 04:13:11,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:13:11,637 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:13:11,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:13:11,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1587789637, now seen corresponding path program 1 times [2024-11-28 04:13:11,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:13:11,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194420033] [2024-11-28 04:13:11,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:13:11,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:13:11,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:13:12,218 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 04:13:12,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:13:12,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194420033] [2024-11-28 04:13:12,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194420033] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:13:12,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162353553] [2024-11-28 04:13:12,219 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:13:12,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:13:12,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:13:12,221 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:13:12,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 04:13:12,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:13:12,513 INFO L256 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 04:13:12,516 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:13:12,726 INFO L349 Elim1Store]: treesize reduction 66, result has 39.4 percent of original size [2024-11-28 04:13:12,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 76 treesize of output 128 [2024-11-28 04:13:12,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2024-11-28 04:13:12,760 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:13:12,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2024-11-28 04:13:12,836 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:13:12,837 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 41 treesize of output 13 [2024-11-28 04:13:12,843 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 [2024-11-28 04:13:12,858 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset| 24))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base|) .cse2))) (and (not (= .cse0 0)) (or (exists ((v_DerPreprocessor_3 (Array Int Int))) (let ((.cse1 (select |c_#memory_$Pointer$#2.base| .cse0))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse0 v_DerPreprocessor_3) |c_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base| (store .cse1 .cse2 .cse0)) .cse0) .cse1))) (= |c_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base| .cse0))))) is different from true [2024-11-28 04:13:12,922 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43| Int) (|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset_BEFORE_CALL_32| Int)) (let ((.cse2 (+ |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset_BEFORE_CALL_32| 24))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43|) .cse2))) (and (not (= .cse0 0)) (exists ((v_DerPreprocessor_3 (Array Int Int))) (let ((.cse1 (select |c_#memory_$Pointer$#2.base| .cse0))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse0 v_DerPreprocessor_3) |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43| (store .cse1 .cse2 .cse0)) .cse0) .cse1))))))) (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43| Int) (|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset_BEFORE_CALL_32| Int)) (let ((.cse3 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43|) (+ |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset_BEFORE_CALL_32| 24)))) (and (not (= .cse3 0)) (= .cse3 |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43|))))) is different from true [2024-11-28 04:13:13,674 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 04:13:13,674 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:13:13,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162353553] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:13:13,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:13:13,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 15 [2024-11-28 04:13:13,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548644731] [2024-11-28 04:13:13,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:13:13,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 04:13:13,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:13:13,676 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 04:13:13,676 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=131, Unknown=3, NotChecked=46, Total=210 [2024-11-28 04:13:13,677 INFO L87 Difference]: Start difference. First operand 257 states and 339 transitions. Second operand has 10 states, 10 states have (on average 5.7) internal successors, (57), 9 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-28 04:13:14,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:13:14,765 INFO L93 Difference]: Finished difference Result 517 states and 686 transitions. [2024-11-28 04:13:14,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 04:13:14,766 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 9 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 89 [2024-11-28 04:13:14,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:13:14,769 INFO L225 Difference]: With dead ends: 517 [2024-11-28 04:13:14,769 INFO L226 Difference]: Without dead ends: 284 [2024-11-28 04:13:14,770 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=46, Invalid=199, Unknown=3, NotChecked=58, Total=306 [2024-11-28 04:13:14,771 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 24 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 269 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:13:14,771 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 485 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 3 Unknown, 269 Unchecked, 0.8s Time] [2024-11-28 04:13:14,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2024-11-28 04:13:14,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2024-11-28 04:13:14,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 216 states have (on average 1.287037037037037) internal successors, (278), 227 states have internal predecessors, (278), 41 states have call successors, (41), 18 states have call predecessors, (41), 26 states have return successors, (53), 38 states have call predecessors, (53), 38 states have call successors, (53) [2024-11-28 04:13:14,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 372 transitions. [2024-11-28 04:13:14,818 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 372 transitions. Word has length 89 [2024-11-28 04:13:14,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:13:14,819 INFO L471 AbstractCegarLoop]: Abstraction has 284 states and 372 transitions. [2024-11-28 04:13:14,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 9 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-28 04:13:14,819 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 372 transitions. [2024-11-28 04:13:14,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-28 04:13:14,821 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:13:14,822 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, 1, 1, 1, 1] [2024-11-28 04:13:14,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-28 04:13:15,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:13:15,022 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:13:15,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:13:15,023 INFO L85 PathProgramCache]: Analyzing trace with hash -98390201, now seen corresponding path program 1 times [2024-11-28 04:13:15,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:13:15,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406421469] [2024-11-28 04:13:15,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:13:15,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:13:15,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:13:15,585 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 04:13:15,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:13:15,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406421469] [2024-11-28 04:13:15,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406421469] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:13:15,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527666326] [2024-11-28 04:13:15,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:13:15,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:13:15,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:13:15,589 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:13:15,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 04:13:15,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:13:15,919 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-28 04:13:15,926 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:13:16,077 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 [2024-11-28 04:13:16,117 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 [2024-11-28 04:13:16,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:13:16,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:13:16,303 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 [2024-11-28 04:13:16,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:13:16,316 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 [2024-11-28 04:13:16,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:13:16,334 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 [2024-11-28 04:13:16,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:13:16,355 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 [2024-11-28 04:13:16,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:13:16,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:13:16,540 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 [2024-11-28 04:13:16,551 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 [2024-11-28 04:13:16,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:13:16,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:13:16,573 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 41 treesize of output 36 [2024-11-28 04:13:16,581 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 25 treesize of output 34 [2024-11-28 04:13:19,595 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-28 04:13:19,595 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:13:20,331 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 24)) (.cse2 (+ |c_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset| 16))) (and (forall ((v_ArrVal_1000 (Array Int Int))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_1000))) (store .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset|))) |c_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base|) .cse2) 0)) (forall ((v_ArrVal_1002 (Array Int Int))) (= (select (select (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_1002))) (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_end_harness_~#list~0#1.base|) .cse2) 0)))) is different from false [2024-11-28 04:13:20,406 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 24)) (.cse2 (+ |c_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset| 16))) (and (forall ((|v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_25| Int)) (or (forall ((v_ArrVal_1000 (Array Int Int)) (v_ArrVal_998 Int)) (= (select (select (let ((.cse0 (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store (select |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_998)) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_25| v_ArrVal_1000))) (store .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 0))) |c_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base|) .cse2) 0)) (< |c_#StackHeapBarrier| (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_25| 1)))) (forall ((|v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_25| Int)) (or (< |c_#StackHeapBarrier| (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_25| 1)) (forall ((v_ArrVal_1002 (Array Int Int)) (v_ArrVal_997 Int)) (= (select (select (let ((.cse3 (store (store |c_#memory_$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_997)) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_25| v_ArrVal_1002))) (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_25|))) |c_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base|) .cse2) 0)))))) is different from false [2024-11-28 04:13:20,461 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:13:20,463 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:13:20,708 INFO L349 Elim1Store]: treesize reduction 86, result has 45.2 percent of original size [2024-11-28 04:13:20,708 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 [2024-11-28 04:13:20,734 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:13:20,735 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:13:20,917 INFO L349 Elim1Store]: treesize reduction 86, result has 45.2 percent of original size [2024-11-28 04:13:20,917 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 [2024-11-28 04:13:20,949 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:13:20,949 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 250 treesize of output 250 [2024-11-28 04:13:20,975 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 [2024-11-28 04:13:21,009 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:13:21,010 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 306 treesize of output 304 [2024-11-28 04:13:21,029 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 255 treesize of output 243 [2024-11-28 04:13:22,308 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 7 treesize of output 3 [2024-11-28 04:13:22,453 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:13:22,454 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 92 [2024-11-28 04:13:22,643 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:13:22,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 89 [2024-11-28 04:13:22,816 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 1 not checked. [2024-11-28 04:13:22,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527666326] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:13:22,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:13:22,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 10] total 24 [2024-11-28 04:13:22,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57363678] [2024-11-28 04:13:22,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:13:22,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 04:13:22,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:13:22,819 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 04:13:22,819 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=404, Unknown=2, NotChecked=82, Total=552 [2024-11-28 04:13:22,820 INFO L87 Difference]: Start difference. First operand 284 states and 372 transitions. Second operand has 24 states, 23 states have (on average 5.304347826086956) internal successors, (122), 23 states have internal predecessors, (122), 10 states have call successors, (26), 3 states have call predecessors, (26), 7 states have return successors, (25), 10 states have call predecessors, (25), 10 states have call successors, (25) [2024-11-28 04:13:25,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:13:25,795 INFO L93 Difference]: Finished difference Result 541 states and 714 transitions. [2024-11-28 04:13:25,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-28 04:13:25,796 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.304347826086956) internal successors, (122), 23 states have internal predecessors, (122), 10 states have call successors, (26), 3 states have call predecessors, (26), 7 states have return successors, (25), 10 states have call predecessors, (25), 10 states have call successors, (25) Word has length 89 [2024-11-28 04:13:25,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:13:25,799 INFO L225 Difference]: With dead ends: 541 [2024-11-28 04:13:25,799 INFO L226 Difference]: Without dead ends: 312 [2024-11-28 04:13:25,801 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 156 SyntacticMatches, 9 SemanticMatches, 36 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=154, Invalid=1112, Unknown=2, NotChecked=138, Total=1406 [2024-11-28 04:13:25,801 INFO L435 NwaCegarLoop]: 91 mSDtfsCounter, 63 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 293 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:13:25,802 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 1142 Invalid, 964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 613 Invalid, 0 Unknown, 293 Unchecked, 1.7s Time] [2024-11-28 04:13:25,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2024-11-28 04:13:25,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 206. [2024-11-28 04:13:25,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 155 states have (on average 1.2451612903225806) internal successors, (193), 166 states have internal predecessors, (193), 28 states have call successors, (28), 13 states have call predecessors, (28), 22 states have return successors, (43), 26 states have call predecessors, (43), 26 states have call successors, (43) [2024-11-28 04:13:25,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 264 transitions. [2024-11-28 04:13:25,850 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 264 transitions. Word has length 89 [2024-11-28 04:13:25,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:13:25,851 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 264 transitions. [2024-11-28 04:13:25,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.304347826086956) internal successors, (122), 23 states have internal predecessors, (122), 10 states have call successors, (26), 3 states have call predecessors, (26), 7 states have return successors, (25), 10 states have call predecessors, (25), 10 states have call successors, (25) [2024-11-28 04:13:25,851 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 264 transitions. [2024-11-28 04:13:25,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-28 04:13:25,852 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:13:25,853 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, 1, 1, 1, 1, 1, 1] [2024-11-28 04:13:25,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-28 04:13:26,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:13:26,057 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:13:26,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:13:26,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1887805747, now seen corresponding path program 1 times [2024-11-28 04:13:26,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:13:26,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881009677] [2024-11-28 04:13:26,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:13:26,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:13:26,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:13:26,677 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 04:13:26,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:13:26,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881009677] [2024-11-28 04:13:26,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881009677] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:13:26,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071715756] [2024-11-28 04:13:26,678 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:13:26,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:13:26,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:13:26,681 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:13:26,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 04:13:27,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:13:27,006 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-28 04:13:27,011 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:13:27,321 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 [2024-11-28 04:13:27,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:13:27,333 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 [2024-11-28 04:13:27,352 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 [2024-11-28 04:13:27,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:13:27,364 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 [2024-11-28 04:13:27,559 INFO L349 Elim1Store]: treesize reduction 38, result has 22.4 percent of original size [2024-11-28 04:13:27,559 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 [2024-11-28 04:13:27,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:13:27,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:13:27,578 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 [2024-11-28 04:13:27,590 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 72 treesize of output 58 [2024-11-28 04:13:27,618 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 [2024-11-28 04:13:49,735 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2024-11-28 04:13:49,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 13 [2024-11-28 04:13:50,208 WARN L873 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_54| Int) (v_DerPreprocessor_10 (Array Int Int)) (v_DerPreprocessor_9 (Array Int Int))) (let ((.cse1 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_54|))) (let ((.cse0 (select .cse1 24))) (let ((.cse2 (select (store (store |c_#memory_$Pointer$#2.base| .cse0 v_DerPreprocessor_9) |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_54| v_DerPreprocessor_10) .cse0))) (and (<= (+ .cse0 2) |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_54|) (= (select .cse1 0) .cse0) (= (select |c_#memory_$Pointer$#2.base| .cse0) .cse2) (= v_DerPreprocessor_10 (store .cse2 24 .cse0))))))) (exists ((|v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_28| Int) (v_DerPreprocessor_11 (Array Int Int)) (v_DerPreprocessor_12 (Array Int Int))) (let ((.cse5 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_28|))) (let ((.cse3 (select .cse5 24))) (let ((.cse4 (select (store (store |c_#memory_$Pointer$#2.base| .cse3 v_DerPreprocessor_11) |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_28| v_DerPreprocessor_12) .cse3))) (and (= (select |c_#memory_$Pointer$#2.base| .cse3) .cse4) (<= (+ 2 .cse3) |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_28|) (= v_DerPreprocessor_12 (store .cse4 24 .cse3)) (= (select .cse5 0) .cse3)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_55| Int) (v_DerPreprocessor_7 (Array Int Int)) (v_DerPreprocessor_8 (Array Int Int))) (let ((.cse6 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_55|))) (let ((.cse7 (select .cse6 24))) (let ((.cse8 (select (store (store |c_#memory_$Pointer$#2.base| .cse7 v_DerPreprocessor_7) |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_55| v_DerPreprocessor_8) .cse7))) (and (= (select .cse6 0) .cse7) (= (select |c_#memory_$Pointer$#2.base| .cse7) .cse8) (= (store .cse8 24 .cse7) v_DerPreprocessor_8) (<= (+ 2 .cse7) |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_55|)))))) (exists ((v_DerPreprocessor_5 (Array Int Int)) (v_DerPreprocessor_6 (Array Int Int)) (|v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_29| Int)) (let ((.cse12 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_29|))) (let ((.cse10 (select .cse12 24))) (let ((.cse11 (select .cse12 0)) (.cse9 (select (store (store |c_#memory_$Pointer$#2.base| .cse10 v_DerPreprocessor_5) |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_29| v_DerPreprocessor_6) .cse10))) (and (= .cse9 (select |c_#memory_$Pointer$#2.base| .cse10)) (not (= .cse11 0)) (<= (+ .cse10 2) |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_29|) (= .cse10 .cse11) (= (store .cse9 24 .cse10) v_DerPreprocessor_6))))))) is different from true [2024-11-28 04:13:51,159 WARN L873 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_54| Int) (v_DerPreprocessor_10 (Array Int Int)) (v_DerPreprocessor_9 (Array Int Int))) (let ((.cse1 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_54|))) (let ((.cse0 (select .cse1 24))) (let ((.cse2 (select (store (store |c_#memory_$Pointer$#2.base| .cse0 v_DerPreprocessor_9) |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_54| v_DerPreprocessor_10) .cse0))) (and (<= (+ .cse0 2) |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_54|) (= (select .cse1 0) .cse0) (= (select |c_#memory_$Pointer$#2.base| .cse0) .cse2) (= v_DerPreprocessor_10 (store .cse2 24 .cse0))))))) (exists ((|v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_28| Int) (v_DerPreprocessor_11 (Array Int Int)) (v_DerPreprocessor_12 (Array Int Int))) (let ((.cse5 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_28|))) (let ((.cse3 (select .cse5 24))) (let ((.cse4 (select (store (store |c_#memory_$Pointer$#2.base| .cse3 v_DerPreprocessor_11) |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_28| v_DerPreprocessor_12) .cse3))) (and (= (select |c_#memory_$Pointer$#2.base| .cse3) .cse4) (<= (+ 2 .cse3) |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_28|) (= v_DerPreprocessor_12 (store .cse4 24 .cse3)) (= (select .cse5 0) .cse3)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_55| Int) (v_DerPreprocessor_7 (Array Int Int)) (v_DerPreprocessor_8 (Array Int Int))) (let ((.cse6 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_55|))) (let ((.cse7 (select .cse6 24))) (let ((.cse8 (select (store (store |c_#memory_$Pointer$#2.base| .cse7 v_DerPreprocessor_7) |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_55| v_DerPreprocessor_8) .cse7))) (and (= (select .cse6 0) .cse7) (= (select |c_#memory_$Pointer$#2.base| .cse7) .cse8) (= (store .cse8 24 .cse7) v_DerPreprocessor_8) (<= (+ 2 .cse7) |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_55|)))))) (exists ((v_DerPreprocessor_5 (Array Int Int)) (v_DerPreprocessor_6 (Array Int Int)) (|v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_29| Int)) (let ((.cse12 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_29|))) (let ((.cse10 (select .cse12 24))) (let ((.cse11 (select .cse12 0)) (.cse9 (select (store (store |c_#memory_$Pointer$#2.base| .cse10 v_DerPreprocessor_5) |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_29| v_DerPreprocessor_6) .cse10))) (and (= .cse9 (select |c_#memory_$Pointer$#2.base| .cse10)) (not (= .cse11 0)) (<= (+ .cse10 2) |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_29|) (= .cse10 .cse11) (= (store .cse9 24 .cse10) v_DerPreprocessor_6)))))) (exists ((v_DerPreprocessor_13 (Array Int Int)) (|v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_30| Int) (v_DerPreprocessor_14 (Array Int Int))) (let ((.cse16 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_30|))) (let ((.cse13 (select .cse16 24))) (let ((.cse15 (select .cse16 0)) (.cse14 (select (store (store |c_#memory_$Pointer$#2.base| .cse13 v_DerPreprocessor_13) |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_30| v_DerPreprocessor_14) .cse13))) (and (= (select |c_#memory_$Pointer$#2.base| .cse13) .cse14) (= .cse13 .cse15) (not (= .cse15 0)) (<= (+ .cse13 2) |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_30|) (= (store .cse14 24 .cse13) v_DerPreprocessor_14))))))) is different from true [2024-11-28 04:13:54,160 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 8 proven. 21 refuted. 11 times theorem prover too weak. 3 trivial. 6 not checked. [2024-11-28 04:13:54,160 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:13:57,165 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:13:57,165 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 [2024-11-28 04:13:57,179 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:13:57,179 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 [2024-11-28 04:13:57,229 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:13:57,230 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 1073 treesize of output 927 [2024-11-28 04:13:57,310 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:13:57,310 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 674 treesize of output 688 [2024-11-28 04:13:57,336 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 681 treesize of output 673 [2024-11-28 04:13:57,369 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 691 treesize of output 675 [2024-11-28 04:13:57,416 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:13:57,416 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 717 treesize of output 693 [2024-11-28 04:13:58,060 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 [2024-11-28 04:13:58,178 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 [2024-11-28 04:13:58,384 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:13:58,385 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 164 treesize of output 166 [2024-11-28 04:13:58,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:13:58,853 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 [2024-11-28 04:13:59,201 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 [2024-11-28 04:13:59,405 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 [2024-11-28 04:13:59,465 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:13:59,465 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 229 treesize of output 199 [2024-11-28 04:14:00,885 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 04:14:00,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071715756] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:14:00,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:14:00,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 25, 16] total 45 [2024-11-28 04:14:00,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586999726] [2024-11-28 04:14:00,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:14:00,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-28 04:14:00,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:14:00,888 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-28 04:14:00,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1607, Unknown=67, NotChecked=166, Total=1980 [2024-11-28 04:14:00,889 INFO L87 Difference]: Start difference. First operand 206 states and 264 transitions. Second operand has 45 states, 41 states have (on average 3.7560975609756095) internal successors, (154), 40 states have internal predecessors, (154), 15 states have call successors, (27), 8 states have call predecessors, (27), 10 states have return successors, (26), 13 states have call predecessors, (26), 15 states have call successors, (26) [2024-11-28 04:15:16,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:15:16,282 INFO L93 Difference]: Finished difference Result 917 states and 1289 transitions. [2024-11-28 04:15:16,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2024-11-28 04:15:16,283 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 41 states have (on average 3.7560975609756095) internal successors, (154), 40 states have internal predecessors, (154), 15 states have call successors, (27), 8 states have call predecessors, (27), 10 states have return successors, (26), 13 states have call predecessors, (26), 15 states have call successors, (26) Word has length 91 [2024-11-28 04:15:16,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:15:16,288 INFO L225 Difference]: With dead ends: 917 [2024-11-28 04:15:16,288 INFO L226 Difference]: Without dead ends: 621 [2024-11-28 04:15:16,293 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 164 SyntacticMatches, 2 SemanticMatches, 119 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 3577 ImplicationChecksByTransitivity, 81.9s TimeCoverageRelationStatistics Valid=1329, Invalid=12337, Unknown=384, NotChecked=470, Total=14520 [2024-11-28 04:15:16,294 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 323 mSDsluCounter, 2420 mSDsCounter, 0 mSdLazyCounter, 3044 mSolverCounterSat, 73 mSolverCounterUnsat, 801 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 2544 SdHoareTripleChecker+Invalid, 5071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 3044 IncrementalHoareTripleChecker+Invalid, 801 IncrementalHoareTripleChecker+Unknown, 1153 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:15:16,294 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 2544 Invalid, 5071 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [73 Valid, 3044 Invalid, 801 Unknown, 1153 Unchecked, 16.8s Time] [2024-11-28 04:15:16,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2024-11-28 04:15:16,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 460. [2024-11-28 04:15:16,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 370 states have (on average 1.308108108108108) internal successors, (484), 391 states have internal predecessors, (484), 51 states have call successors, (51), 20 states have call predecessors, (51), 38 states have return successors, (109), 48 states have call predecessors, (109), 49 states have call successors, (109) [2024-11-28 04:15:16,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 644 transitions. [2024-11-28 04:15:16,410 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 644 transitions. Word has length 91 [2024-11-28 04:15:16,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:15:16,411 INFO L471 AbstractCegarLoop]: Abstraction has 460 states and 644 transitions. [2024-11-28 04:15:16,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 41 states have (on average 3.7560975609756095) internal successors, (154), 40 states have internal predecessors, (154), 15 states have call successors, (27), 8 states have call predecessors, (27), 10 states have return successors, (26), 13 states have call predecessors, (26), 15 states have call successors, (26) [2024-11-28 04:15:16,411 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 644 transitions. [2024-11-28 04:15:16,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-28 04:15:16,414 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:15:16,414 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:15:16,425 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 04:15:16,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 04:15:16,615 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:15:16,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:15:16,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1161848717, now seen corresponding path program 1 times [2024-11-28 04:15:16,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:15:16,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540328409] [2024-11-28 04:15:16,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:15:16,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:15:16,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:15:16,738 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-28 04:15:16,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:15:16,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540328409] [2024-11-28 04:15:16,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540328409] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:15:16,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161982047] [2024-11-28 04:15:16,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:15:16,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:15:16,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:15:16,742 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:15:16,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 04:15:17,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:15:17,050 INFO L256 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:15:17,052 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:15:17,065 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 04:15:17,065 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:15:17,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161982047] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:15:17,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:15:17,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-28 04:15:17,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809634106] [2024-11-28 04:15:17,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:15:17,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:15:17,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:15:17,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:15:17,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:15:17,067 INFO L87 Difference]: Start difference. First operand 460 states and 644 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 04:15:17,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:15:17,209 INFO L93 Difference]: Finished difference Result 745 states and 1073 transitions. [2024-11-28 04:15:17,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:15:17,209 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 91 [2024-11-28 04:15:17,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:15:17,212 INFO L225 Difference]: With dead ends: 745 [2024-11-28 04:15:17,213 INFO L226 Difference]: Without dead ends: 432 [2024-11-28 04:15:17,215 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:15:17,216 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 1 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:15:17,216 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 229 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:15:17,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2024-11-28 04:15:17,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 432. [2024-11-28 04:15:17,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 345 states have (on average 1.281159420289855) internal successors, (442), 364 states have internal predecessors, (442), 50 states have call successors, (50), 20 states have call predecessors, (50), 36 states have return successors, (100), 47 states have call predecessors, (100), 48 states have call successors, (100) [2024-11-28 04:15:17,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 592 transitions. [2024-11-28 04:15:17,321 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 592 transitions. Word has length 91 [2024-11-28 04:15:17,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:15:17,322 INFO L471 AbstractCegarLoop]: Abstraction has 432 states and 592 transitions. [2024-11-28 04:15:17,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 04:15:17,322 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 592 transitions. [2024-11-28 04:15:17,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-28 04:15:17,325 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:15:17,325 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, 1, 1, 1, 1, 1, 1] [2024-11-28 04:15:17,337 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 04:15:17,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 04:15:17,526 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:15:17,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:15:17,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1177367435, now seen corresponding path program 1 times [2024-11-28 04:15:17,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:15:17,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833463509] [2024-11-28 04:15:17,526 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:15:17,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:15:17,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:15:17,643 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-28 04:15:17,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:15:17,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833463509] [2024-11-28 04:15:17,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833463509] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:15:17,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362008406] [2024-11-28 04:15:17,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:15:17,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:15:17,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:15:17,646 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:15:17,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 04:15:17,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:15:17,950 INFO L256 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:15:17,952 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:15:17,964 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 04:15:17,964 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:15:17,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362008406] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:15:17,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:15:17,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-28 04:15:17,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132079764] [2024-11-28 04:15:17,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:15:17,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:15:17,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:15:17,966 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:15:17,966 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:15:17,966 INFO L87 Difference]: Start difference. First operand 432 states and 592 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 04:15:18,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:15:18,093 INFO L93 Difference]: Finished difference Result 721 states and 1003 transitions. [2024-11-28 04:15:18,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:15:18,094 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 91 [2024-11-28 04:15:18,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:15:18,097 INFO L225 Difference]: With dead ends: 721 [2024-11-28 04:15:18,097 INFO L226 Difference]: Without dead ends: 358 [2024-11-28 04:15:18,100 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:15:18,101 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 1 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:15:18,101 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 229 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:15:18,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2024-11-28 04:15:18,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 329. [2024-11-28 04:15:18,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 254 states have (on average 1.1929133858267718) internal successors, (303), 267 states have internal predecessors, (303), 44 states have call successors, (44), 20 states have call predecessors, (44), 30 states have return successors, (70), 41 states have call predecessors, (70), 42 states have call successors, (70) [2024-11-28 04:15:18,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 417 transitions. [2024-11-28 04:15:18,189 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 417 transitions. Word has length 91 [2024-11-28 04:15:18,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:15:18,189 INFO L471 AbstractCegarLoop]: Abstraction has 329 states and 417 transitions. [2024-11-28 04:15:18,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 04:15:18,189 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 417 transitions. [2024-11-28 04:15:18,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-28 04:15:18,191 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:15:18,191 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:15:18,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-28 04:15:18,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 04:15:18,395 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:15:18,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:15:18,396 INFO L85 PathProgramCache]: Analyzing trace with hash -592544261, now seen corresponding path program 1 times [2024-11-28 04:15:18,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:15:18,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485418078] [2024-11-28 04:15:18,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:15:18,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:15:18,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:15:20,141 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 04:15:20,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:15:20,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485418078] [2024-11-28 04:15:20,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485418078] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:15:20,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175157605] [2024-11-28 04:15:20,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:15:20,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:15:20,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:15:20,144 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:15:20,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 04:15:20,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:15:20,476 INFO L256 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-11-28 04:15:20,480 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:15:20,850 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 [2024-11-28 04:15:20,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:20,862 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 [2024-11-28 04:15:21,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:21,027 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 [2024-11-28 04:15:21,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:21,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:21,056 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 21 treesize of output 11 [2024-11-28 04:15:21,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:21,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:21,176 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 22 treesize of output 19 [2024-11-28 04:15:21,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 18 [2024-11-28 04:15:22,842 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 44 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:15:22,842 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:15:23,807 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1456 (Array Int Int))) (not (= (+ |c_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset| 16) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_1456))) (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|) (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 24) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset|))) |c_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset|)))) is different from false [2024-11-28 04:15:23,839 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1456 (Array Int Int)) (v_ArrVal_1454 (Array Int Int)) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_38| Int)) (or (not (= (+ |c_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset| 16) (select (select (let ((.cse0 (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_1454) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_38| v_ArrVal_1456))) (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|) (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 24) 0))) |c_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset|))) (< |c_#StackHeapBarrier| (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_38| 1)))) is different from false [2024-11-28 04:15:23,871 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:15:23,872 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 48 treesize of output 41 [2024-11-28 04:15:23,925 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:15:23,926 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 9423 treesize of output 9205 [2024-11-28 04:15:23,965 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 706 treesize of output 690 [2024-11-28 04:15:23,998 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 810 treesize of output 778 [2024-11-28 04:15:24,445 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 [2024-11-28 04:15:24,752 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:15:24,753 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 107 treesize of output 109 [2024-11-28 04:15:24,920 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 [2024-11-28 04:15:24,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2024-11-28 04:15:25,453 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 25 trivial. 4 not checked. [2024-11-28 04:15:25,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175157605] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:15:25,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:15:25,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 13] total 36 [2024-11-28 04:15:25,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390737995] [2024-11-28 04:15:25,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:15:25,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-28 04:15:25,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:15:25,455 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-28 04:15:25,455 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1019, Unknown=2, NotChecked=130, Total=1260 [2024-11-28 04:15:25,455 INFO L87 Difference]: Start difference. First operand 329 states and 417 transitions. Second operand has 36 states, 33 states have (on average 4.606060606060606) internal successors, (152), 36 states have internal predecessors, (152), 13 states have call successors, (25), 3 states have call predecessors, (25), 6 states have return successors, (24), 10 states have call predecessors, (24), 13 states have call successors, (24) [2024-11-28 04:15:28,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:15:28,894 INFO L93 Difference]: Finished difference Result 532 states and 691 transitions. [2024-11-28 04:15:28,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 04:15:28,895 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 33 states have (on average 4.606060606060606) internal successors, (152), 36 states have internal predecessors, (152), 13 states have call successors, (25), 3 states have call predecessors, (25), 6 states have return successors, (24), 10 states have call predecessors, (24), 13 states have call successors, (24) Word has length 94 [2024-11-28 04:15:28,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:15:28,899 INFO L225 Difference]: With dead ends: 532 [2024-11-28 04:15:28,899 INFO L226 Difference]: Without dead ends: 372 [2024-11-28 04:15:28,901 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 166 SyntacticMatches, 6 SemanticMatches, 44 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=197, Invalid=1701, Unknown=2, NotChecked=170, Total=2070 [2024-11-28 04:15:28,902 INFO L435 NwaCegarLoop]: 98 mSDtfsCounter, 117 mSDsluCounter, 1556 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 1654 SdHoareTripleChecker+Invalid, 1571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 304 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:15:28,902 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 1654 Invalid, 1571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1201 Invalid, 0 Unknown, 304 Unchecked, 2.4s Time] [2024-11-28 04:15:28,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2024-11-28 04:15:28,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 332. [2024-11-28 04:15:28,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 257 states have (on average 1.1906614785992218) internal successors, (306), 270 states have internal predecessors, (306), 44 states have call successors, (44), 20 states have call predecessors, (44), 30 states have return successors, (70), 41 states have call predecessors, (70), 42 states have call successors, (70) [2024-11-28 04:15:28,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 420 transitions. [2024-11-28 04:15:28,996 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 420 transitions. Word has length 94 [2024-11-28 04:15:28,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:15:28,997 INFO L471 AbstractCegarLoop]: Abstraction has 332 states and 420 transitions. [2024-11-28 04:15:28,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 33 states have (on average 4.606060606060606) internal successors, (152), 36 states have internal predecessors, (152), 13 states have call successors, (25), 3 states have call predecessors, (25), 6 states have return successors, (24), 10 states have call predecessors, (24), 13 states have call successors, (24) [2024-11-28 04:15:28,997 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 420 transitions. [2024-11-28 04:15:28,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-28 04:15:28,999 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:15:28,999 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, 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] [2024-11-28 04:15:29,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 04:15:29,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 04:15:29,203 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:15:29,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:15:29,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1448777397, now seen corresponding path program 2 times [2024-11-28 04:15:29,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:15:29,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003692164] [2024-11-28 04:15:29,204 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:15:29,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:15:29,259 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:15:29,259 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:15:29,921 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-28 04:15:29,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:15:29,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003692164] [2024-11-28 04:15:29,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003692164] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:15:29,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62849516] [2024-11-28 04:15:29,922 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:15:29,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:15:29,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:15:29,925 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:15:29,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 04:15:30,267 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:15:30,267 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:15:30,271 INFO L256 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-11-28 04:15:30,277 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:15:30,537 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 [2024-11-28 04:15:30,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:30,546 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 [2024-11-28 04:15:30,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:30,688 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 [2024-11-28 04:15:30,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:30,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:30,725 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 21 treesize of output 11 [2024-11-28 04:15:30,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:30,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:30,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 23 [2024-11-28 04:15:30,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:30,844 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 [2024-11-28 04:15:30,849 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 [2024-11-28 04:15:32,642 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 48 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 04:15:32,642 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:15:33,304 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-28 04:15:33,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62849516] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:15:33,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:15:33,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 19, 8] total 28 [2024-11-28 04:15:33,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64415114] [2024-11-28 04:15:33,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:15:33,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-28 04:15:33,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:15:33,306 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-28 04:15:33,306 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=667, Unknown=0, NotChecked=0, Total=756 [2024-11-28 04:15:33,306 INFO L87 Difference]: Start difference. First operand 332 states and 420 transitions. Second operand has 28 states, 27 states have (on average 4.7407407407407405) internal successors, (128), 26 states have internal predecessors, (128), 7 states have call successors, (20), 3 states have call predecessors, (20), 5 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) [2024-11-28 04:15:37,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:15:37,494 INFO L93 Difference]: Finished difference Result 660 states and 880 transitions. [2024-11-28 04:15:37,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-28 04:15:37,494 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 4.7407407407407405) internal successors, (128), 26 states have internal predecessors, (128), 7 states have call successors, (20), 3 states have call predecessors, (20), 5 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) Word has length 104 [2024-11-28 04:15:37,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:15:37,498 INFO L225 Difference]: With dead ends: 660 [2024-11-28 04:15:37,499 INFO L226 Difference]: Without dead ends: 415 [2024-11-28 04:15:37,501 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 198 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=225, Invalid=1755, Unknown=0, NotChecked=0, Total=1980 [2024-11-28 04:15:37,502 INFO L435 NwaCegarLoop]: 93 mSDtfsCounter, 97 mSDsluCounter, 1102 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 1195 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:15:37,502 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 1195 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-28 04:15:37,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2024-11-28 04:15:37,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 347. [2024-11-28 04:15:37,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 269 states have (on average 1.1895910780669146) internal successors, (320), 282 states have internal predecessors, (320), 44 states have call successors, (44), 20 states have call predecessors, (44), 33 states have return successors, (80), 44 states have call predecessors, (80), 42 states have call successors, (80) [2024-11-28 04:15:37,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 444 transitions. [2024-11-28 04:15:37,611 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 444 transitions. Word has length 104 [2024-11-28 04:15:37,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:15:37,612 INFO L471 AbstractCegarLoop]: Abstraction has 347 states and 444 transitions. [2024-11-28 04:15:37,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 4.7407407407407405) internal successors, (128), 26 states have internal predecessors, (128), 7 states have call successors, (20), 3 states have call predecessors, (20), 5 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) [2024-11-28 04:15:37,612 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 444 transitions. [2024-11-28 04:15:37,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-28 04:15:37,614 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:15:37,615 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:15:37,626 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-28 04:15:37,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:15:37,819 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:15:37,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:15:37,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1816830601, now seen corresponding path program 1 times [2024-11-28 04:15:37,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:15:37,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696404215] [2024-11-28 04:15:37,820 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:15:37,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:15:37,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:15:38,204 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-28 04:15:38,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:15:38,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696404215] [2024-11-28 04:15:38,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696404215] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:15:38,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635743978] [2024-11-28 04:15:38,205 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:15:38,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:15:38,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:15:38,208 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:15:38,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 04:15:38,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:15:38,595 INFO L256 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 110 conjuncts are in the unsatisfiable core [2024-11-28 04:15:38,601 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:15:38,889 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 [2024-11-28 04:15:38,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:38,901 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 [2024-11-28 04:15:38,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 04:15:38,952 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 [2024-11-28 04:15:38,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:38,964 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 [2024-11-28 04:15:39,126 INFO L349 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2024-11-28 04:15:39,126 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 32 [2024-11-28 04:15:39,156 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-28 04:15:39,156 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 53 [2024-11-28 04:15:39,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:39,200 INFO L349 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2024-11-28 04:15:39,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 67 treesize of output 58 [2024-11-28 04:15:39,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:15:39,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:39,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:39,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 11 [2024-11-28 04:15:39,512 INFO L349 Elim1Store]: treesize reduction 121, result has 11.7 percent of original size [2024-11-28 04:15:39,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 172 treesize of output 136 [2024-11-28 04:15:39,551 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 237 treesize of output 215 [2024-11-28 04:15:39,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:39,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:15:39,571 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 40 treesize of output 37 [2024-11-28 04:15:39,621 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 [2024-11-28 04:15:45,016 INFO L349 Elim1Store]: treesize reduction 432, result has 0.2 percent of original size [2024-11-28 04:15:45,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 14 new quantified variables, introduced 45 case distinctions, treesize of input 3456 treesize of output 2614 [2024-11-28 04:15:45,072 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 43 proven. 13 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 04:15:45,073 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:15:46,186 WARN L851 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| Int) (v_ArrVal_1753 (Array Int Int)) (v_ArrVal_1751 (Array Int Int))) (not (= (let ((.cse2 (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 24))) (select (let ((.cse0 (let ((.cse1 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_1753))) (store .cse1 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse1 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse2 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|))))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset|))) (select (select (let ((.cse3 (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_1751))) (store .cse3 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse3 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse2 |ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset|))) |c_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset|))) 0))) is different from false [2024-11-28 04:15:46,462 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:15:46,462 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 142 treesize of output 135 [2024-11-28 04:15:46,494 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:15:46,494 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 126 treesize of output 103 [2024-11-28 04:15:47,460 INFO L349 Elim1Store]: treesize reduction 220, result has 54.3 percent of original size [2024-11-28 04:15:47,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 11 new quantified variables, introduced 36 case distinctions, treesize of input 63007 treesize of output 56572 [2024-11-28 04:15:49,724 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:15:49,727 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 250454 treesize of output 245136 [2024-11-28 04:15:51,522 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 26169 treesize of output 25841 [2024-11-28 04:15:52,063 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 27081 treesize of output 26853 [2024-11-28 04:15:52,889 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:15:52,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 29543 treesize of output 28496 [2024-11-28 04:15:54,564 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:15:54,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 36105 treesize of output 35306 [2024-11-28 04:15:58,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 10 [2024-11-28 04:19:32,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101 [2024-11-28 04:19:32,502 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-28 04:19:32,503 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-11-28 04:19:32,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-28 04:19:32,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:19:32,704 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:275) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:499) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:484) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:590) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:245) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:318) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:728) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:234) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:395) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:267) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:325) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:181) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:428) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:314) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:275) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 69 more [2024-11-28 04:19:32,711 INFO L158 Benchmark]: Toolchain (without parser) took 464010.66ms. Allocated memory was 117.4MB in the beginning and 2.2GB in the end (delta: 2.1GB). Free memory was 86.1MB in the beginning and 2.1GB in the end (delta: -2.0GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2024-11-28 04:19:32,711 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 117.4MB. Free memory is still 74.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:19:32,712 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2633.41ms. Allocated memory is still 117.4MB. Free memory was 86.0MB in the beginning and 60.3MB in the end (delta: 25.6MB). Peak memory consumption was 72.1MB. Max. memory is 16.1GB. [2024-11-28 04:19:32,712 INFO L158 Benchmark]: Boogie Procedure Inliner took 90.12ms. Allocated memory is still 117.4MB. Free memory was 60.3MB in the beginning and 55.2MB in the end (delta: 5.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:19:32,712 INFO L158 Benchmark]: Boogie Preprocessor took 106.23ms. Allocated memory is still 117.4MB. Free memory was 55.2MB in the beginning and 51.3MB in the end (delta: 3.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:19:32,713 INFO L158 Benchmark]: RCFGBuilder took 785.31ms. Allocated memory is still 117.4MB. Free memory was 51.3MB in the beginning and 67.1MB in the end (delta: -15.8MB). Peak memory consumption was 28.5MB. Max. memory is 16.1GB. [2024-11-28 04:19:32,713 INFO L158 Benchmark]: TraceAbstraction took 460388.96ms. Allocated memory was 117.4MB in the beginning and 2.2GB in the end (delta: 2.1GB). Free memory was 66.4MB in the beginning and 2.1GB in the end (delta: -2.0GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2024-11-28 04:19:32,715 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 117.4MB. Free memory is still 74.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2633.41ms. Allocated memory is still 117.4MB. Free memory was 86.0MB in the beginning and 60.3MB in the end (delta: 25.6MB). Peak memory consumption was 72.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 90.12ms. Allocated memory is still 117.4MB. Free memory was 60.3MB in the beginning and 55.2MB in the end (delta: 5.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 106.23ms. Allocated memory is still 117.4MB. Free memory was 55.2MB in the beginning and 51.3MB in the end (delta: 3.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 785.31ms. Allocated memory is still 117.4MB. Free memory was 51.3MB in the beginning and 67.1MB in the end (delta: -15.8MB). Peak memory consumption was 28.5MB. Max. memory is 16.1GB. * TraceAbstraction took 460388.96ms. Allocated memory was 117.4MB in the beginning and 2.2GB in the end (delta: 2.1GB). Free memory was 66.4MB in the beginning and 2.1GB in the end (delta: -2.0GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d7b9ddf837d983b2f2db252b1327ae049806ab568e5bf2d0a60ffd182bd7d0fe --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:19:35,719 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:19:35,844 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-28 04:19:35,851 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:19:35,851 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:19:35,900 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:19:35,902 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:19:35,902 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:19:35,903 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:19:35,904 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:19:35,904 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:19:35,905 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:19:35,906 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:19:35,906 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:19:35,906 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:19:35,906 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:19:35,906 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:19:35,907 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:19:35,907 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:19:35,907 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:19:35,907 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:19:35,908 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 04:19:35,908 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-28 04:19:35,908 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-28 04:19:35,908 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:19:35,908 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:19:35,908 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:19:35,909 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:19:35,909 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:19:35,909 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:19:35,909 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:19:35,909 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:19:35,909 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:19:35,910 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:19:35,910 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:19:35,911 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:19:35,911 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:19:35,911 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:19:35,911 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:19:35,911 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:19:35,911 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:19:35,912 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-28 04:19:35,913 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-28 04:19:35,913 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:19:35,913 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:19:35,913 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:19:35,913 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:19:35,913 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_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7b9ddf837d983b2f2db252b1327ae049806ab568e5bf2d0a60ffd182bd7d0fe [2024-11-28 04:19:36,383 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:19:36,395 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:19:36,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:19:36,402 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:19:36,404 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:19:36,406 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness_negated.i [2024-11-28 04:19:39,601 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/data/6781f83a5/c5d2cad27c0e42d58b9775ab64a2bc70/FLAGacb8d7e86 [2024-11-28 04:19:40,244 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:19:40,245 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness_negated.i [2024-11-28 04:19:40,305 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/data/6781f83a5/c5d2cad27c0e42d58b9775ab64a2bc70/FLAGacb8d7e86 [2024-11-28 04:19:40,677 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/data/6781f83a5/c5d2cad27c0e42d58b9775ab64a2bc70 [2024-11-28 04:19:40,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:19:40,682 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:19:40,684 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:19:40,684 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:19:40,690 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:19:40,691 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:19:40" (1/1) ... [2024-11-28 04:19:40,692 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@398a7211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:19:40, skipping insertion in model container [2024-11-28 04:19:40,692 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:19:40" (1/1) ... [2024-11-28 04:19:40,808 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:19:41,151 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_6c835e4c-4908-4bde-8e08-0861ec95e249/sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness_negated.i[4493,4506] [2024-11-28 04:19:41,160 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_6c835e4c-4908-4bde-8e08-0861ec95e249/sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness_negated.i[4553,4566] [2024-11-28 04:19:41,996 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:19:42,164 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:19:42,165 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:19:42,167 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:19:42,197 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:19:42,202 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:42,203 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:42,205 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:42,206 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:19:42,208 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:42,209 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:42,217 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:19:42,219 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:19:42,222 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:19:42,223 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:19:42,243 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:42,246 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:19:42,246 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:42,247 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:19:42,253 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:42,254 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:19:42,254 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:42,254 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:19:42,256 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:42,260 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:19:42,260 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:42,261 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:19:42,262 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:42,264 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:42,858 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:19:42,859 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:19:42,860 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:19:42,860 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:19:43,068 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:19:43,093 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_6c835e4c-4908-4bde-8e08-0861ec95e249/sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness_negated.i[150674,150687] [2024-11-28 04:19:43,094 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:19:43,121 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-28 04:19:43,183 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:19:43,193 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_6c835e4c-4908-4bde-8e08-0861ec95e249/sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness_negated.i[4493,4506] [2024-11-28 04:19:43,193 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_6c835e4c-4908-4bde-8e08-0861ec95e249/sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness_negated.i[4553,4566] [2024-11-28 04:19:43,237 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:19:43,264 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:19:43,265 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:19:43,265 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:19:43,275 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:19:43,276 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:43,277 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:43,278 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:43,279 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:19:43,280 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:43,281 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:43,284 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:19:43,284 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:19:43,290 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:19:43,292 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:19:43,303 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:43,304 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:19:43,304 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:43,304 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:19:43,307 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:43,307 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:19:43,308 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:43,309 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:19:43,311 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:43,312 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:19:43,313 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:43,313 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:19:43,315 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:43,315 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:43,413 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:19:43,414 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:19:43,416 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:19:43,416 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:19:43,477 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:19:43,490 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_6c835e4c-4908-4bde-8e08-0861ec95e249/sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness_negated.i[150674,150687] [2024-11-28 04:19:43,491 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:19:43,498 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:19:43,517 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_6c835e4c-4908-4bde-8e08-0861ec95e249/sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness_negated.i[4493,4506] [2024-11-28 04:19:43,517 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_6c835e4c-4908-4bde-8e08-0861ec95e249/sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness_negated.i[4553,4566] [2024-11-28 04:19:43,588 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:43,589 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:43,589 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:43,590 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:43,591 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:43,599 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:43,600 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:43,601 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:43,602 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:43,603 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:43,603 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:43,604 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:43,604 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:19:43,728 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_6c835e4c-4908-4bde-8e08-0861ec95e249/sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness_negated.i[150674,150687] [2024-11-28 04:19:43,728 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:19:43,979 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:19:43,980 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:19:43 WrapperNode [2024-11-28 04:19:43,981 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:19:43,983 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:19:43,983 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:19:43,983 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:19:43,994 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:19:43" (1/1) ... [2024-11-28 04:19:44,082 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:19:43" (1/1) ... [2024-11-28 04:19:44,139 INFO L138 Inliner]: procedures = 687, calls = 1038, calls flagged for inlining = 53, calls inlined = 6, statements flattened = 136 [2024-11-28 04:19:44,140 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:19:44,141 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:19:44,141 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:19:44,142 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:19:44,152 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:19:43" (1/1) ... [2024-11-28 04:19:44,152 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:19:43" (1/1) ... [2024-11-28 04:19:44,157 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:19:43" (1/1) ... [2024-11-28 04:19:44,189 INFO L175 MemorySlicer]: Split 21 memory accesses to 3 slices as follows [2, 5, 14]. 67 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]. [2024-11-28 04:19:44,189 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:19:43" (1/1) ... [2024-11-28 04:19:44,190 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:19:43" (1/1) ... [2024-11-28 04:19:44,218 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:19:43" (1/1) ... [2024-11-28 04:19:44,219 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:19:43" (1/1) ... [2024-11-28 04:19:44,226 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:19:43" (1/1) ... [2024-11-28 04:19:44,234 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:19:43" (1/1) ... [2024-11-28 04:19:44,240 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:19:43" (1/1) ... [2024-11-28 04:19:44,249 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:19:44,253 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:19:44,253 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:19:44,253 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:19:44,254 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:19:43" (1/1) ... [2024-11-28 04:19:44,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:19:44,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:19:44,292 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:19:44,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:19:44,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 04:19:44,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-28 04:19:44,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-28 04:19:44,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-28 04:19:44,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 04:19:44,335 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 04:19:44,335 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2024-11-28 04:19:44,335 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2024-11-28 04:19:44,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 04:19:44,336 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2024-11-28 04:19:44,336 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2024-11-28 04:19:44,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:19:44,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 04:19:44,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 04:19:44,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-28 04:19:44,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:19:44,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:19:44,336 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 04:19:44,336 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 04:19:44,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 04:19:44,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 04:19:44,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 04:19:44,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 04:19:44,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 04:19:44,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-28 04:19:44,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-28 04:19:44,337 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-28 04:19:44,337 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-28 04:19:44,637 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:19:44,639 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:19:45,039 INFO L? ?]: Removed 54 outVars from TransFormulas that were not future-live. [2024-11-28 04:19:45,039 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:19:45,049 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:19:45,049 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 04:19:45,050 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:19:45 BoogieIcfgContainer [2024-11-28 04:19:45,050 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:19:45,052 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:19:45,052 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:19:45,057 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:19:45,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:19:40" (1/3) ... [2024-11-28 04:19:45,058 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21fbe001 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:19:45, skipping insertion in model container [2024-11-28 04:19:45,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:19:43" (2/3) ... [2024-11-28 04:19:45,058 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21fbe001 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:19:45, skipping insertion in model container [2024-11-28 04:19:45,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:19:45" (3/3) ... [2024-11-28 04:19:45,060 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_linked_list_end_harness_negated.i [2024-11-28 04:19:45,076 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:19:45,078 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_linked_list_end_harness_negated.i that has 6 procedures, 68 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-28 04:19:45,137 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:19:45,153 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;@1f78a186, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:19:45,154 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:19:45,159 INFO L276 IsEmpty]: Start isEmpty. Operand has 68 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 49 states have internal predecessors, (65), 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) [2024-11-28 04:19:45,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-28 04:19:45,173 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:19:45,174 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] [2024-11-28 04:19:45,175 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:19:45,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:19:45,182 INFO L85 PathProgramCache]: Analyzing trace with hash -721077294, now seen corresponding path program 1 times [2024-11-28 04:19:45,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:19:45,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1474635151] [2024-11-28 04:19:45,207 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:19:45,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:19:45,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:19:45,218 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:19:45,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:19:45,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:19:45,521 INFO L256 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 04:19:45,527 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:19:45,564 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-28 04:19:45,564 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:19:45,565 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:19:45,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474635151] [2024-11-28 04:19:45,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474635151] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:19:45,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:19:45,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:19:45,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343659510] [2024-11-28 04:19:45,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:19:45,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:19:45,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:19:45,595 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:19:45,596 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:19:45,598 INFO L87 Difference]: Start difference. First operand has 68 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 49 states have internal predecessors, (65), 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) [2024-11-28 04:19:45,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:19:45,630 INFO L93 Difference]: Finished difference Result 128 states and 184 transitions. [2024-11-28 04:19:45,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:19:45,633 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 [2024-11-28 04:19:45,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:19:45,642 INFO L225 Difference]: With dead ends: 128 [2024-11-28 04:19:45,642 INFO L226 Difference]: Without dead ends: 63 [2024-11-28 04:19:45,650 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:19:45,655 INFO L435 NwaCegarLoop]: 87 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, 87 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 [2024-11-28 04:19:45,658 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:19:45,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-28 04:19:45,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-11-28 04:19:45,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 45 states have internal predecessors, (57), 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) [2024-11-28 04:19:45,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 82 transitions. [2024-11-28 04:19:45,700 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 82 transitions. Word has length 68 [2024-11-28 04:19:45,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:19:45,701 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 82 transitions. [2024-11-28 04:19:45,701 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) [2024-11-28 04:19:45,701 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 82 transitions. [2024-11-28 04:19:45,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-28 04:19:45,705 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:19:45,705 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] [2024-11-28 04:19:45,720 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:19:45,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:19:45,906 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:19:45,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:19:45,906 INFO L85 PathProgramCache]: Analyzing trace with hash -2007385264, now seen corresponding path program 1 times [2024-11-28 04:19:45,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:19:45,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2090759982] [2024-11-28 04:19:45,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:19:45,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:19:45,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:19:45,911 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:19:45,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:19:46,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:19:46,160 INFO L256 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:19:46,163 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:19:46,272 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 04:19:46,273 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:19:46,273 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:19:46,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090759982] [2024-11-28 04:19:46,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090759982] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:19:46,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:19:46,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:19:46,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381399366] [2024-11-28 04:19:46,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:19:46,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:19:46,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:19:46,275 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:19:46,275 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:19:46,276 INFO L87 Difference]: Start difference. First operand 63 states and 82 transitions. Second operand has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 04:19:46,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:19:46,371 INFO L93 Difference]: Finished difference Result 114 states and 152 transitions. [2024-11-28 04:19:46,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:19:46,372 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 68 [2024-11-28 04:19:46,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:19:46,374 INFO L225 Difference]: With dead ends: 114 [2024-11-28 04:19:46,375 INFO L226 Difference]: Without dead ends: 65 [2024-11-28 04:19:46,375 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:19:46,376 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 0 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:19:46,377 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 377 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:19:46,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-28 04:19:46,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2024-11-28 04:19:46,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 45 states have (on average 1.288888888888889) internal successors, (58), 47 states have internal predecessors, (58), 13 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2024-11-28 04:19:46,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 86 transitions. [2024-11-28 04:19:46,388 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 86 transitions. Word has length 68 [2024-11-28 04:19:46,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:19:46,389 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 86 transitions. [2024-11-28 04:19:46,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 04:19:46,389 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 86 transitions. [2024-11-28 04:19:46,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-28 04:19:46,391 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:19:46,391 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 04:19:46,404 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:19:46,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:19:46,592 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:19:46,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:19:46,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1838850572, now seen corresponding path program 1 times [2024-11-28 04:19:46,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:19:46,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2053335464] [2024-11-28 04:19:46,593 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:19:46,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:19:46,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:19:46,595 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:19:46,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:19:46,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:19:46,813 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:19:46,816 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:19:46,949 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-28 04:19:46,949 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:19:46,950 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:19:46,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053335464] [2024-11-28 04:19:46,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053335464] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:19:46,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:19:46,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:19:46,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292424050] [2024-11-28 04:19:46,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:19:46,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:19:46,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:19:46,952 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:19:46,952 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:19:46,952 INFO L87 Difference]: Start difference. First operand 65 states and 86 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 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) [2024-11-28 04:19:47,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:19:47,193 INFO L93 Difference]: Finished difference Result 121 states and 163 transitions. [2024-11-28 04:19:47,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:19:47,194 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 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 [2024-11-28 04:19:47,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:19:47,196 INFO L225 Difference]: With dead ends: 121 [2024-11-28 04:19:47,198 INFO L226 Difference]: Without dead ends: 70 [2024-11-28 04:19:47,199 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:19:47,200 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 20 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:19:47,201 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 300 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:19:47,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-28 04:19:47,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2024-11-28 04:19:47,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 47 states have (on average 1.2765957446808511) internal successors, (60), 50 states have internal predecessors, (60), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (17), 12 states have call predecessors, (17), 12 states have call successors, (17) [2024-11-28 04:19:47,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 90 transitions. [2024-11-28 04:19:47,216 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 90 transitions. Word has length 70 [2024-11-28 04:19:47,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:19:47,216 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 90 transitions. [2024-11-28 04:19:47,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 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) [2024-11-28 04:19:47,217 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 90 transitions. [2024-11-28 04:19:47,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-28 04:19:47,219 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:19:47,219 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 04:19:47,233 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 04:19:47,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:19:47,423 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:19:47,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:19:47,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1174848582, now seen corresponding path program 1 times [2024-11-28 04:19:47,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:19:47,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1913671404] [2024-11-28 04:19:47,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:19:47,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:19:47,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:19:47,428 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:19:47,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:19:47,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:19:47,680 INFO L256 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:19:47,683 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:19:47,893 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-28 04:19:47,893 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:19:47,893 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:19:47,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913671404] [2024-11-28 04:19:47,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913671404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:19:47,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:19:47,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:19:47,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823801626] [2024-11-28 04:19:47,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:19:47,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:19:47,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:19:47,897 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:19:47,897 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:19:47,897 INFO L87 Difference]: Start difference. First operand 68 states and 90 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 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) [2024-11-28 04:19:48,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:19:48,252 INFO L93 Difference]: Finished difference Result 133 states and 181 transitions. [2024-11-28 04:19:48,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:19:48,254 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 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 [2024-11-28 04:19:48,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:19:48,256 INFO L225 Difference]: With dead ends: 133 [2024-11-28 04:19:48,256 INFO L226 Difference]: Without dead ends: 79 [2024-11-28 04:19:48,257 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:19:48,261 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 29 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:19:48,262 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 354 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:19:48,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-28 04:19:48,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 70. [2024-11-28 04:19:48,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 49 states have (on average 1.2857142857142858) internal successors, (63), 52 states have internal predecessors, (63), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (17), 12 states have call predecessors, (17), 12 states have call successors, (17) [2024-11-28 04:19:48,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 93 transitions. [2024-11-28 04:19:48,289 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 93 transitions. Word has length 72 [2024-11-28 04:19:48,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:19:48,289 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 93 transitions. [2024-11-28 04:19:48,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 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) [2024-11-28 04:19:48,290 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 93 transitions. [2024-11-28 04:19:48,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-28 04:19:48,292 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:19:48,292 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:19:48,306 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:19:48,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:19:48,496 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:19:48,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:19:48,497 INFO L85 PathProgramCache]: Analyzing trace with hash -156048888, now seen corresponding path program 1 times [2024-11-28 04:19:48,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:19:48,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [549814395] [2024-11-28 04:19:48,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:19:48,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:19:48,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:19:48,501 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:19:48,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:19:48,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:19:48,758 INFO L256 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 04:19:48,761 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:19:48,796 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-28 04:19:48,796 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:19:48,797 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:19:48,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549814395] [2024-11-28 04:19:48,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549814395] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:19:48,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:19:48,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:19:48,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031865993] [2024-11-28 04:19:48,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:19:48,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:19:48,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:19:48,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:19:48,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:19:48,800 INFO L87 Difference]: Start difference. First operand 70 states and 93 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) [2024-11-28 04:19:48,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:19:48,858 INFO L93 Difference]: Finished difference Result 130 states and 180 transitions. [2024-11-28 04:19:48,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:19:48,859 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 [2024-11-28 04:19:48,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:19:48,864 INFO L225 Difference]: With dead ends: 130 [2024-11-28 04:19:48,864 INFO L226 Difference]: Without dead ends: 74 [2024-11-28 04:19:48,866 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:19:48,867 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 2 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 152 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 [2024-11-28 04:19:48,867 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 152 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:19:48,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-28 04:19:48,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 71. [2024-11-28 04:19:48,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 50 states have (on average 1.28) internal successors, (64), 53 states have internal predecessors, (64), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (17), 12 states have call predecessors, (17), 12 states have call successors, (17) [2024-11-28 04:19:48,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 94 transitions. [2024-11-28 04:19:48,883 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 94 transitions. Word has length 73 [2024-11-28 04:19:48,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:19:48,883 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 94 transitions. [2024-11-28 04:19:48,884 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) [2024-11-28 04:19:48,884 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 94 transitions. [2024-11-28 04:19:48,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-28 04:19:48,886 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:19:48,886 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:19:48,901 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 04:19:49,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:19:49,087 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:19:49,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:19:49,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1235015210, now seen corresponding path program 1 times [2024-11-28 04:19:49,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:19:49,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [262772977] [2024-11-28 04:19:49,089 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:19:49,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:19:49,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:19:49,094 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:19:49,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:19:49,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:19:49,350 INFO L256 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:19:49,353 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:19:49,419 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-28 04:19:49,419 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:19:49,420 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:19:49,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262772977] [2024-11-28 04:19:49,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262772977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:19:49,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:19:49,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:19:49,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100314383] [2024-11-28 04:19:49,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:19:49,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:19:49,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:19:49,422 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:19:49,422 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:19:49,422 INFO L87 Difference]: Start difference. First operand 71 states and 94 transitions. Second operand has 6 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 04:19:49,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:19:49,499 INFO L93 Difference]: Finished difference Result 121 states and 161 transitions. [2024-11-28 04:19:49,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:19:49,500 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 81 [2024-11-28 04:19:49,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:19:49,502 INFO L225 Difference]: With dead ends: 121 [2024-11-28 04:19:49,502 INFO L226 Difference]: Without dead ends: 71 [2024-11-28 04:19:49,502 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:19:49,503 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 0 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:19:49,504 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 376 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:19:49,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-28 04:19:49,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-11-28 04:19:49,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 50 states have (on average 1.28) internal successors, (64), 53 states have internal predecessors, (64), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (16), 12 states have call predecessors, (16), 12 states have call successors, (16) [2024-11-28 04:19:49,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 93 transitions. [2024-11-28 04:19:49,518 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 93 transitions. Word has length 81 [2024-11-28 04:19:49,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:19:49,519 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 93 transitions. [2024-11-28 04:19:49,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 04:19:49,519 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 93 transitions. [2024-11-28 04:19:49,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-28 04:19:49,521 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:19:49,521 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:19:49,536 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 04:19:49,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:19:49,725 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:19:49,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:19:49,726 INFO L85 PathProgramCache]: Analyzing trace with hash 508806118, now seen corresponding path program 1 times [2024-11-28 04:19:49,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:19:49,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1541248212] [2024-11-28 04:19:49,726 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:19:49,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:19:49,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:19:49,728 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:19:49,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:19:49,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:19:49,958 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:19:49,962 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:19:50,090 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:19:50,090 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:19:50,090 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:19:50,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541248212] [2024-11-28 04:19:50,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541248212] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:19:50,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:19:50,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:19:50,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922755685] [2024-11-28 04:19:50,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:19:50,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:19:50,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:19:50,092 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:19:50,092 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:19:50,093 INFO L87 Difference]: Start difference. First operand 71 states and 93 transitions. Second operand has 7 states, 6 states have (on average 10.5) internal successors, (63), 7 states have internal predecessors, (63), 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) [2024-11-28 04:19:50,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:19:50,291 INFO L93 Difference]: Finished difference Result 130 states and 169 transitions. [2024-11-28 04:19:50,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:19:50,292 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 7 states have internal predecessors, (63), 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 83 [2024-11-28 04:19:50,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:19:50,294 INFO L225 Difference]: With dead ends: 130 [2024-11-28 04:19:50,294 INFO L226 Difference]: Without dead ends: 73 [2024-11-28 04:19:50,294 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:19:50,295 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 23 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:19:50,295 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 364 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:19:50,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-28 04:19:50,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2024-11-28 04:19:50,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 50 states have (on average 1.26) internal successors, (63), 53 states have internal predecessors, (63), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (16), 12 states have call predecessors, (16), 12 states have call successors, (16) [2024-11-28 04:19:50,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 92 transitions. [2024-11-28 04:19:50,316 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 92 transitions. Word has length 83 [2024-11-28 04:19:50,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:19:50,317 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 92 transitions. [2024-11-28 04:19:50,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 7 states have internal predecessors, (63), 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) [2024-11-28 04:19:50,317 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 92 transitions. [2024-11-28 04:19:50,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-28 04:19:50,319 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:19:50,319 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:19:50,332 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 04:19:50,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:19:50,520 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:19:50,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:19:50,521 INFO L85 PathProgramCache]: Analyzing trace with hash -718693100, now seen corresponding path program 1 times [2024-11-28 04:19:50,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:19:50,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1332155234] [2024-11-28 04:19:50,521 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:19:50,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:19:50,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:19:50,523 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:19:50,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:19:50,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:19:50,742 INFO L256 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 04:19:50,745 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:19:50,904 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:19:50,904 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:19:50,904 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:19:50,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332155234] [2024-11-28 04:19:50,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332155234] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:19:50,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:19:50,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 04:19:50,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889531286] [2024-11-28 04:19:50,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:19:50,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:19:50,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:19:50,905 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:19:50,905 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:19:50,906 INFO L87 Difference]: Start difference. First operand 71 states and 92 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) [2024-11-28 04:19:51,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:19:51,197 INFO L93 Difference]: Finished difference Result 130 states and 168 transitions. [2024-11-28 04:19:51,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:19:51,198 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 [2024-11-28 04:19:51,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:19:51,200 INFO L225 Difference]: With dead ends: 130 [2024-11-28 04:19:51,200 INFO L226 Difference]: Without dead ends: 72 [2024-11-28 04:19:51,200 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:19:51,201 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 32 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:19:51,201 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 410 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:19:51,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-28 04:19:51,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 67. [2024-11-28 04:19:51,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 47 states have (on average 1.2553191489361701) internal successors, (59), 49 states have internal predecessors, (59), 13 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2024-11-28 04:19:51,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 86 transitions. [2024-11-28 04:19:51,221 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 86 transitions. Word has length 85 [2024-11-28 04:19:51,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:19:51,222 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 86 transitions. [2024-11-28 04:19:51,222 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) [2024-11-28 04:19:51,222 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 86 transitions. [2024-11-28 04:19:51,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-28 04:19:51,223 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:19:51,223 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:19:51,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 04:19:51,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:19:51,424 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:19:51,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:19:51,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1827158020, now seen corresponding path program 2 times [2024-11-28 04:19:51,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:19:51,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [113433583] [2024-11-28 04:19:51,425 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:19:51,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:19:51,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:19:51,427 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:19:51,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:19:51,598 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:19:51,598 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:19:51,603 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:19:51,606 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:19:51,656 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-28 04:19:51,657 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:19:51,657 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:19:51,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113433583] [2024-11-28 04:19:51,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113433583] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:19:51,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:19:51,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:19:51,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216954887] [2024-11-28 04:19:51,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:19:51,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:19:51,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:19:51,658 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:19:51,658 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:19:51,659 INFO L87 Difference]: Start difference. First operand 67 states and 86 transitions. Second operand has 6 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2024-11-28 04:19:51,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:19:51,712 INFO L93 Difference]: Finished difference Result 75 states and 94 transitions. [2024-11-28 04:19:51,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:19:51,713 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 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 94 [2024-11-28 04:19:51,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:19:51,714 INFO L225 Difference]: With dead ends: 75 [2024-11-28 04:19:51,714 INFO L226 Difference]: Without dead ends: 73 [2024-11-28 04:19:51,714 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:19:51,715 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 3 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:19:51,715 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 382 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:19:51,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-28 04:19:51,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2024-11-28 04:19:51,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 50 states have (on average 1.24) internal successors, (62), 52 states have internal predecessors, (62), 14 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15) [2024-11-28 04:19:51,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 91 transitions. [2024-11-28 04:19:51,723 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 91 transitions. Word has length 94 [2024-11-28 04:19:51,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:19:51,724 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 91 transitions. [2024-11-28 04:19:51,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2024-11-28 04:19:51,724 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 91 transitions. [2024-11-28 04:19:51,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-28 04:19:51,725 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:19:51,725 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:19:51,737 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 04:19:51,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:19:51,926 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:19:51,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:19:51,926 INFO L85 PathProgramCache]: Analyzing trace with hash 200270693, now seen corresponding path program 1 times [2024-11-28 04:19:51,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:19:51,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1871905677] [2024-11-28 04:19:51,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:19:51,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:19:51,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:19:51,929 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:19:51,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 04:19:52,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:19:52,161 INFO L256 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:19:52,164 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:19:52,240 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-28 04:19:52,242 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:19:52,242 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:19:52,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871905677] [2024-11-28 04:19:52,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871905677] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:19:52,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:19:52,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:19:52,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039696492] [2024-11-28 04:19:52,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:19:52,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:19:52,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:19:52,245 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:19:52,245 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:19:52,245 INFO L87 Difference]: Start difference. First operand 72 states and 91 transitions. Second operand has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 04:19:52,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:19:52,328 INFO L93 Difference]: Finished difference Result 133 states and 171 transitions. [2024-11-28 04:19:52,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:19:52,329 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 100 [2024-11-28 04:19:52,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:19:52,330 INFO L225 Difference]: With dead ends: 133 [2024-11-28 04:19:52,330 INFO L226 Difference]: Without dead ends: 75 [2024-11-28 04:19:52,330 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:19:52,331 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 0 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:19:52,331 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 441 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:19:52,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-28 04:19:52,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-11-28 04:19:52,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 52 states have (on average 1.2307692307692308) internal successors, (64), 55 states have internal predecessors, (64), 14 states have call successors, (14), 6 states have call predecessors, (14), 8 states have return successors, (18), 13 states have call predecessors, (18), 13 states have call successors, (18) [2024-11-28 04:19:52,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 96 transitions. [2024-11-28 04:19:52,345 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 96 transitions. Word has length 100 [2024-11-28 04:19:52,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:19:52,346 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 96 transitions. [2024-11-28 04:19:52,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 04:19:52,346 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 96 transitions. [2024-11-28 04:19:52,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-28 04:19:52,347 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:19:52,347 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:19:52,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-28 04:19:52,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:19:52,552 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:19:52,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:19:52,554 INFO L85 PathProgramCache]: Analyzing trace with hash -780001673, now seen corresponding path program 1 times [2024-11-28 04:19:52,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:19:52,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [230653562] [2024-11-28 04:19:52,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:19:52,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:19:52,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:19:52,557 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:19:52,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 04:19:52,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:19:52,788 INFO L256 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:19:52,790 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:19:52,857 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-28 04:19:52,858 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:19:52,858 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:19:52,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230653562] [2024-11-28 04:19:52,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230653562] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:19:52,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:19:52,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:19:52,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220917326] [2024-11-28 04:19:52,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:19:52,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:19:52,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:19:52,859 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:19:52,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:19:52,860 INFO L87 Difference]: Start difference. First operand 75 states and 96 transitions. Second operand has 7 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-28 04:19:52,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:19:52,935 INFO L93 Difference]: Finished difference Result 129 states and 166 transitions. [2024-11-28 04:19:52,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:19:52,936 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 102 [2024-11-28 04:19:52,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:19:52,937 INFO L225 Difference]: With dead ends: 129 [2024-11-28 04:19:52,937 INFO L226 Difference]: Without dead ends: 75 [2024-11-28 04:19:52,938 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:19:52,939 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 0 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:19:52,939 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 440 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:19:52,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-28 04:19:52,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-11-28 04:19:52,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 52 states have (on average 1.2307692307692308) internal successors, (64), 55 states have internal predecessors, (64), 14 states have call successors, (14), 6 states have call predecessors, (14), 8 states have return successors, (17), 13 states have call predecessors, (17), 13 states have call successors, (17) [2024-11-28 04:19:52,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 95 transitions. [2024-11-28 04:19:52,947 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 95 transitions. Word has length 102 [2024-11-28 04:19:52,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:19:52,948 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 95 transitions. [2024-11-28 04:19:52,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-28 04:19:52,948 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 95 transitions. [2024-11-28 04:19:52,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-28 04:19:52,949 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:19:52,949 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:19:52,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 04:19:53,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:19:53,150 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:19:53,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:19:53,151 INFO L85 PathProgramCache]: Analyzing trace with hash 705327397, now seen corresponding path program 1 times [2024-11-28 04:19:53,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:19:53,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1866342616] [2024-11-28 04:19:53,151 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:19:53,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:19:53,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:19:53,153 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:19:53,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 04:19:53,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:19:53,395 INFO L256 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 04:19:53,399 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:19:53,471 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 [2024-11-28 04:19:53,476 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 [2024-11-28 04:19:58,086 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1| (_ BitVec 64)) (|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1| (_ BitVec 64))) (not (= (select (select |c_#memory_$Pointer$#2.base| |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1|) |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1|) (_ bv0 64)))) (exists ((|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1| (_ BitVec 64)) (|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1| (_ BitVec 64))) (not (= (_ bv0 64) (select (select |c_#memory_$Pointer$#2.offset| |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1|) |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1|))))) is different from true [2024-11-28 04:19:58,570 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 04:19:58,571 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:19:59,219 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 29 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-28 04:19:59,219 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:19:59,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866342616] [2024-11-28 04:19:59,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866342616] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:19:59,220 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:19:59,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 17 [2024-11-28 04:19:59,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78534169] [2024-11-28 04:19:59,220 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:19:59,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 04:19:59,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:19:59,221 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 04:19:59,222 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=199, Unknown=1, NotChecked=28, Total=272 [2024-11-28 04:19:59,222 INFO L87 Difference]: Start difference. First operand 75 states and 95 transitions. Second operand has 17 states, 17 states have (on average 6.588235294117647) internal successors, (112), 17 states have internal predecessors, (112), 5 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2024-11-28 04:20:01,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:20:01,345 INFO L93 Difference]: Finished difference Result 178 states and 241 transitions. [2024-11-28 04:20:01,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 04:20:01,346 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.588235294117647) internal successors, (112), 17 states have internal predecessors, (112), 5 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) Word has length 104 [2024-11-28 04:20:01,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:20:01,348 INFO L225 Difference]: With dead ends: 178 [2024-11-28 04:20:01,348 INFO L226 Difference]: Without dead ends: 117 [2024-11-28 04:20:01,349 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 194 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=76, Invalid=347, Unknown=1, NotChecked=38, Total=462 [2024-11-28 04:20:01,350 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 55 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 9 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 268 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:20:01,350 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 664 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 339 Invalid, 5 Unknown, 268 Unchecked, 1.7s Time] [2024-11-28 04:20:01,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-28 04:20:01,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 93. [2024-11-28 04:20:01,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 68 states have (on average 1.2647058823529411) internal successors, (86), 71 states have internal predecessors, (86), 15 states have call successors, (15), 7 states have call predecessors, (15), 9 states have return successors, (19), 14 states have call predecessors, (19), 14 states have call successors, (19) [2024-11-28 04:20:01,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 120 transitions. [2024-11-28 04:20:01,366 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 120 transitions. Word has length 104 [2024-11-28 04:20:01,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:20:01,367 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 120 transitions. [2024-11-28 04:20:01,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.588235294117647) internal successors, (112), 17 states have internal predecessors, (112), 5 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2024-11-28 04:20:01,367 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 120 transitions. [2024-11-28 04:20:01,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-28 04:20:01,368 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:20:01,369 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, 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] [2024-11-28 04:20:01,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-28 04:20:01,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:20:01,570 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:20:01,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:20:01,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1092577637, now seen corresponding path program 1 times [2024-11-28 04:20:01,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:20:01,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1192469433] [2024-11-28 04:20:01,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:20:01,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:20:01,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:20:01,572 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:20:01,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 04:20:01,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:20:01,795 INFO L256 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:20:01,798 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:20:01,814 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-28 04:20:01,814 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:20:01,814 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:20:01,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192469433] [2024-11-28 04:20:01,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192469433] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:20:01,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:20:01,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:20:01,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370951760] [2024-11-28 04:20:01,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:20:01,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:20:01,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:20:01,816 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:20:01,816 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:20:01,817 INFO L87 Difference]: Start difference. First operand 93 states and 120 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 04:20:01,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:20:01,855 INFO L93 Difference]: Finished difference Result 173 states and 232 transitions. [2024-11-28 04:20:01,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:20:01,856 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 104 [2024-11-28 04:20:01,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:20:01,858 INFO L225 Difference]: With dead ends: 173 [2024-11-28 04:20:01,858 INFO L226 Difference]: Without dead ends: 94 [2024-11-28 04:20:01,859 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:20:01,860 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:20:01,860 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 231 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:20:01,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-28 04:20:01,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2024-11-28 04:20:01,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 68 states have (on average 1.25) internal successors, (85), 71 states have internal predecessors, (85), 15 states have call successors, (15), 7 states have call predecessors, (15), 9 states have return successors, (19), 14 states have call predecessors, (19), 14 states have call successors, (19) [2024-11-28 04:20:01,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 119 transitions. [2024-11-28 04:20:01,877 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 119 transitions. Word has length 104 [2024-11-28 04:20:01,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:20:01,878 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 119 transitions. [2024-11-28 04:20:01,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 04:20:01,878 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 119 transitions. [2024-11-28 04:20:01,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-28 04:20:01,881 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:20:01,882 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, 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] [2024-11-28 04:20:01,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 04:20:02,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:20:02,086 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:20:02,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:20:02,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1651150427, now seen corresponding path program 1 times [2024-11-28 04:20:02,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:20:02,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [560332757] [2024-11-28 04:20:02,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:20:02,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:20:02,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:20:02,090 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:20:02,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 04:20:02,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:20:02,373 INFO L256 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:20:02,376 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:20:02,399 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-28 04:20:02,400 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:20:02,401 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:20:02,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560332757] [2024-11-28 04:20:02,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560332757] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:20:02,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:20:02,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:20:02,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966388321] [2024-11-28 04:20:02,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:20:02,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:20:02,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:20:02,403 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:20:02,403 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:20:02,403 INFO L87 Difference]: Start difference. First operand 93 states and 119 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 04:20:02,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:20:02,444 INFO L93 Difference]: Finished difference Result 172 states and 231 transitions. [2024-11-28 04:20:02,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:20:02,445 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 104 [2024-11-28 04:20:02,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:20:02,448 INFO L225 Difference]: With dead ends: 172 [2024-11-28 04:20:02,448 INFO L226 Difference]: Without dead ends: 93 [2024-11-28 04:20:02,449 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:20:02,452 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:20:02,452 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 232 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:20:02,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-28 04:20:02,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 90. [2024-11-28 04:20:02,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 65 states have (on average 1.2307692307692308) internal successors, (80), 68 states have internal predecessors, (80), 15 states have call successors, (15), 7 states have call predecessors, (15), 9 states have return successors, (19), 14 states have call predecessors, (19), 14 states have call successors, (19) [2024-11-28 04:20:02,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 114 transitions. [2024-11-28 04:20:02,469 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 114 transitions. Word has length 104 [2024-11-28 04:20:02,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:20:02,470 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 114 transitions. [2024-11-28 04:20:02,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 04:20:02,470 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 114 transitions. [2024-11-28 04:20:02,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-28 04:20:02,473 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:20:02,473 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:20:02,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 04:20:02,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:20:02,674 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:20:02,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:20:02,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1665438949, now seen corresponding path program 1 times [2024-11-28 04:20:02,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:20:02,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [281312962] [2024-11-28 04:20:02,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:20:02,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:20:02,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:20:02,677 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:20:02,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 04:20:02,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:20:02,922 INFO L256 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 04:20:02,927 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:20:03,045 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 [2024-11-28 04:20:03,054 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 [2024-11-28 04:20:05,296 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 35 proven. 25 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 04:20:05,297 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:20:06,846 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-28 04:20:06,846 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:20:06,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281312962] [2024-11-28 04:20:06,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281312962] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:20:06,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:20:06,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 21 [2024-11-28 04:20:06,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003562097] [2024-11-28 04:20:06,847 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:20:06,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 04:20:06,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:20:06,849 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 04:20:06,849 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2024-11-28 04:20:06,850 INFO L87 Difference]: Start difference. First operand 90 states and 114 transitions. Second operand has 21 states, 21 states have (on average 6.285714285714286) internal successors, (132), 19 states have internal predecessors, (132), 10 states have call successors, (21), 4 states have call predecessors, (21), 7 states have return successors, (20), 9 states have call predecessors, (20), 10 states have call successors, (20) [2024-11-28 04:20:11,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:20:15,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:20:19,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:20:24,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:20:27,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:20:27,544 INFO L93 Difference]: Finished difference Result 211 states and 262 transitions. [2024-11-28 04:20:27,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 04:20:27,545 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.285714285714286) internal successors, (132), 19 states have internal predecessors, (132), 10 states have call successors, (21), 4 states have call predecessors, (21), 7 states have return successors, (20), 9 states have call predecessors, (20), 10 states have call successors, (20) Word has length 106 [2024-11-28 04:20:27,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:20:27,546 INFO L225 Difference]: With dead ends: 211 [2024-11-28 04:20:27,546 INFO L226 Difference]: Without dead ends: 134 [2024-11-28 04:20:27,547 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 188 SyntacticMatches, 7 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=146, Invalid=666, Unknown=0, NotChecked=0, Total=812 [2024-11-28 04:20:27,548 INFO L435 NwaCegarLoop]: 85 mSDtfsCounter, 101 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 44 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:20:27,549 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 772 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 447 Invalid, 4 Unknown, 0 Unchecked, 19.8s Time] [2024-11-28 04:20:27,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-28 04:20:27,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 131. [2024-11-28 04:20:27,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 100 states have (on average 1.21) internal successors, (121), 103 states have internal predecessors, (121), 17 states have call successors, (17), 11 states have call predecessors, (17), 13 states have return successors, (22), 16 states have call predecessors, (22), 16 states have call successors, (22) [2024-11-28 04:20:27,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 160 transitions. [2024-11-28 04:20:27,572 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 160 transitions. Word has length 106 [2024-11-28 04:20:27,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:20:27,572 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 160 transitions. [2024-11-28 04:20:27,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.285714285714286) internal successors, (132), 19 states have internal predecessors, (132), 10 states have call successors, (21), 4 states have call predecessors, (21), 7 states have return successors, (20), 9 states have call predecessors, (20), 10 states have call successors, (20) [2024-11-28 04:20:27,573 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 160 transitions. [2024-11-28 04:20:27,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-28 04:20:27,574 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:20:27,575 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:20:27,591 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 04:20:27,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:20:27,776 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:20:27,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:20:27,776 INFO L85 PathProgramCache]: Analyzing trace with hash 654321699, now seen corresponding path program 1 times [2024-11-28 04:20:27,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:20:27,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [392885521] [2024-11-28 04:20:27,777 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:20:27,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:20:27,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:20:27,779 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:20:27,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 04:20:28,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:20:28,045 INFO L256 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 04:20:28,050 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:20:28,334 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 11 treesize of output 7 [2024-11-28 04:20:28,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:20:28,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2024-11-28 04:20:30,868 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-28 04:20:30,868 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:20:30,868 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:20:30,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392885521] [2024-11-28 04:20:30,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392885521] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:20:30,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:20:30,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 04:20:30,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372879530] [2024-11-28 04:20:30,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:20:30,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:20:30,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:20:30,870 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:20:30,870 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:20:30,870 INFO L87 Difference]: Start difference. First operand 131 states and 160 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 5 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-28 04:20:33,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:20:33,140 INFO L93 Difference]: Finished difference Result 317 states and 390 transitions. [2024-11-28 04:20:33,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 04:20:33,141 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 5 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 106 [2024-11-28 04:20:33,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:20:33,144 INFO L225 Difference]: With dead ends: 317 [2024-11-28 04:20:33,144 INFO L226 Difference]: Without dead ends: 249 [2024-11-28 04:20:33,145 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 88 SyntacticMatches, 8 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:20:33,146 INFO L435 NwaCegarLoop]: 61 mSDtfsCounter, 47 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:20:33,146 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 398 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-28 04:20:33,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2024-11-28 04:20:33,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 246. [2024-11-28 04:20:33,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 189 states have (on average 1.216931216931217) internal successors, (230), 195 states have internal predecessors, (230), 32 states have call successors, (32), 20 states have call predecessors, (32), 24 states have return successors, (42), 30 states have call predecessors, (42), 30 states have call successors, (42) [2024-11-28 04:20:33,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 304 transitions. [2024-11-28 04:20:33,200 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 304 transitions. Word has length 106 [2024-11-28 04:20:33,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:20:33,204 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 304 transitions. [2024-11-28 04:20:33,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 5 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-28 04:20:33,204 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 304 transitions. [2024-11-28 04:20:33,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-28 04:20:33,209 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:20:33,210 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:20:33,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 04:20:33,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:20:33,411 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:20:33,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:20:33,411 INFO L85 PathProgramCache]: Analyzing trace with hash -366746655, now seen corresponding path program 1 times [2024-11-28 04:20:33,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:20:33,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1538902061] [2024-11-28 04:20:33,413 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:20:33,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:20:33,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:20:33,415 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:20:33,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 04:20:33,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:20:33,700 INFO L256 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-28 04:20:33,705 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:20:33,812 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 [2024-11-28 04:20:33,818 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 [2024-11-28 04:20:37,603 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 32 proven. 28 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 04:20:37,603 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:20:39,981 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-28 04:20:39,981 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:20:39,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538902061] [2024-11-28 04:20:39,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538902061] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:20:39,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:20:39,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 25 [2024-11-28 04:20:39,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473910041] [2024-11-28 04:20:39,982 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:20:39,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-28 04:20:39,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:20:39,983 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-28 04:20:39,983 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2024-11-28 04:20:39,984 INFO L87 Difference]: Start difference. First operand 246 states and 304 transitions. Second operand has 25 states, 25 states have (on average 5.16) internal successors, (129), 23 states have internal predecessors, (129), 10 states have call successors, (21), 4 states have call predecessors, (21), 7 states have return successors, (20), 9 states have call predecessors, (20), 10 states have call successors, (20) [2024-11-28 04:20:44,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:20:48,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:20:52,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:20:55,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:20:55,835 INFO L93 Difference]: Finished difference Result 374 states and 464 transitions. [2024-11-28 04:20:55,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 04:20:55,836 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.16) internal successors, (129), 23 states have internal predecessors, (129), 10 states have call successors, (21), 4 states have call predecessors, (21), 7 states have return successors, (20), 9 states have call predecessors, (20), 10 states have call successors, (20) Word has length 106 [2024-11-28 04:20:55,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:20:55,839 INFO L225 Difference]: With dead ends: 374 [2024-11-28 04:20:55,839 INFO L226 Difference]: Without dead ends: 246 [2024-11-28 04:20:55,840 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 182 SyntacticMatches, 7 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=183, Invalid=873, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 04:20:55,841 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 102 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 46 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:20:55,842 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 708 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 435 Invalid, 3 Unknown, 0 Unchecked, 14.7s Time] [2024-11-28 04:20:55,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2024-11-28 04:20:55,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2024-11-28 04:20:55,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 189 states have (on average 1.2063492063492063) internal successors, (228), 195 states have internal predecessors, (228), 32 states have call successors, (32), 20 states have call predecessors, (32), 24 states have return successors, (42), 30 states have call predecessors, (42), 30 states have call successors, (42) [2024-11-28 04:20:55,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 302 transitions. [2024-11-28 04:20:55,913 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 302 transitions. Word has length 106 [2024-11-28 04:20:55,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:20:55,914 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 302 transitions. [2024-11-28 04:20:55,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.16) internal successors, (129), 23 states have internal predecessors, (129), 10 states have call successors, (21), 4 states have call predecessors, (21), 7 states have return successors, (20), 9 states have call predecessors, (20), 10 states have call successors, (20) [2024-11-28 04:20:55,914 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 302 transitions. [2024-11-28 04:20:55,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-28 04:20:55,919 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:20:55,920 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:20:55,935 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-28 04:20:56,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:20:56,120 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:20:56,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:20:56,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1934075935, now seen corresponding path program 1 times [2024-11-28 04:20:56,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:20:56,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1647363548] [2024-11-28 04:20:56,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:20:56,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:20:56,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:20:56,126 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:20:56,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 04:20:56,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:20:56,398 INFO L256 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-28 04:20:56,401 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:20:56,517 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 [2024-11-28 04:20:59,243 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 28 proven. 34 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 04:20:59,244 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:21:01,669 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 122 treesize of output 114 [2024-11-28 04:21:01,878 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 12 proven. 35 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 04:21:01,878 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:21:01,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647363548] [2024-11-28 04:21:01,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647363548] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:21:01,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:21:01,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 29 [2024-11-28 04:21:01,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59840417] [2024-11-28 04:21:01,879 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:21:01,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-28 04:21:01,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:21:01,880 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-28 04:21:01,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=710, Unknown=0, NotChecked=0, Total=812 [2024-11-28 04:21:01,881 INFO L87 Difference]: Start difference. First operand 246 states and 302 transitions. Second operand has 29 states, 29 states have (on average 4.689655172413793) internal successors, (136), 27 states have internal predecessors, (136), 13 states have call successors, (21), 3 states have call predecessors, (21), 7 states have return successors, (20), 11 states have call predecessors, (20), 13 states have call successors, (20) [2024-11-28 04:21:08,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:21:08,948 INFO L93 Difference]: Finished difference Result 618 states and 766 transitions. [2024-11-28 04:21:08,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 04:21:08,949 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.689655172413793) internal successors, (136), 27 states have internal predecessors, (136), 13 states have call successors, (21), 3 states have call predecessors, (21), 7 states have return successors, (20), 11 states have call predecessors, (20), 13 states have call successors, (20) Word has length 106 [2024-11-28 04:21:08,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:21:08,952 INFO L225 Difference]: With dead ends: 618 [2024-11-28 04:21:08,952 INFO L226 Difference]: Without dead ends: 476 [2024-11-28 04:21:08,954 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 186 SyntacticMatches, 6 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=267, Invalid=1539, Unknown=0, NotChecked=0, Total=1806 [2024-11-28 04:21:08,954 INFO L435 NwaCegarLoop]: 82 mSDtfsCounter, 223 mSDsluCounter, 1106 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 1188 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:21:08,954 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 1188 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2024-11-28 04:21:08,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2024-11-28 04:21:09,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 418. [2024-11-28 04:21:09,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 317 states have (on average 1.2082018927444795) internal successors, (383), 331 states have internal predecessors, (383), 56 states have call successors, (56), 32 states have call predecessors, (56), 44 states have return successors, (82), 54 states have call predecessors, (82), 52 states have call successors, (82) [2024-11-28 04:21:09,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 521 transitions. [2024-11-28 04:21:09,066 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 521 transitions. Word has length 106 [2024-11-28 04:21:09,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:21:09,067 INFO L471 AbstractCegarLoop]: Abstraction has 418 states and 521 transitions. [2024-11-28 04:21:09,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.689655172413793) internal successors, (136), 27 states have internal predecessors, (136), 13 states have call successors, (21), 3 states have call predecessors, (21), 7 states have return successors, (20), 11 states have call predecessors, (20), 13 states have call successors, (20) [2024-11-28 04:21:09,067 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 521 transitions. [2024-11-28 04:21:09,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-28 04:21:09,069 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:21:09,069 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:21:09,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 04:21:09,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:21:09,270 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:21:09,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:21:09,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1116427485, now seen corresponding path program 1 times [2024-11-28 04:21:09,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:21:09,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1961121574] [2024-11-28 04:21:09,271 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:21:09,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:21:09,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:21:09,273 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:21:09,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 04:21:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:21:09,513 INFO L256 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:21:09,515 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:21:09,744 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-28 04:21:09,744 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:21:09,744 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:21:09,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961121574] [2024-11-28 04:21:09,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961121574] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:21:09,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:21:09,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:21:09,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863219811] [2024-11-28 04:21:09,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:21:09,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:21:09,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:21:09,746 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:21:09,746 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:21:09,746 INFO L87 Difference]: Start difference. First operand 418 states and 521 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-28 04:21:09,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:21:09,988 INFO L93 Difference]: Finished difference Result 896 states and 1147 transitions. [2024-11-28 04:21:09,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:21:09,989 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 106 [2024-11-28 04:21:09,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:21:09,993 INFO L225 Difference]: With dead ends: 896 [2024-11-28 04:21:09,993 INFO L226 Difference]: Without dead ends: 398 [2024-11-28 04:21:09,996 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:21:09,996 INFO L435 NwaCegarLoop]: 96 mSDtfsCounter, 35 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:21:09,997 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 328 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:21:09,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2024-11-28 04:21:10,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 398. [2024-11-28 04:21:10,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 300 states have (on average 1.1933333333333334) internal successors, (358), 313 states have internal predecessors, (358), 55 states have call successors, (55), 31 states have call predecessors, (55), 42 states have return successors, (79), 53 states have call predecessors, (79), 51 states have call successors, (79) [2024-11-28 04:21:10,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 492 transitions. [2024-11-28 04:21:10,093 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 492 transitions. Word has length 106 [2024-11-28 04:21:10,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:21:10,093 INFO L471 AbstractCegarLoop]: Abstraction has 398 states and 492 transitions. [2024-11-28 04:21:10,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-28 04:21:10,093 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 492 transitions. [2024-11-28 04:21:10,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-28 04:21:10,095 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:21:10,095 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] [2024-11-28 04:21:10,109 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 04:21:10,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:21:10,296 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:21:10,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:21:10,296 INFO L85 PathProgramCache]: Analyzing trace with hash 216757064, now seen corresponding path program 1 times [2024-11-28 04:21:10,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:21:10,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1760217933] [2024-11-28 04:21:10,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:21:10,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:21:10,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:21:10,299 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:21:10,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 04:21:10,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:21:10,557 INFO L256 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:21:10,559 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:21:10,684 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2024-11-28 04:21:10,685 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:21:10,685 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:21:10,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760217933] [2024-11-28 04:21:10,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760217933] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:21:10,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:21:10,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:21:10,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842438668] [2024-11-28 04:21:10,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:21:10,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:21:10,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:21:10,687 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:21:10,687 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:21:10,687 INFO L87 Difference]: Start difference. First operand 398 states and 492 transitions. Second operand has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-11-28 04:21:10,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:21:10,952 INFO L93 Difference]: Finished difference Result 424 states and 521 transitions. [2024-11-28 04:21:10,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:21:10,952 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 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 113 [2024-11-28 04:21:10,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:21:10,955 INFO L225 Difference]: With dead ends: 424 [2024-11-28 04:21:10,955 INFO L226 Difference]: Without dead ends: 422 [2024-11-28 04:21:10,956 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:21:10,958 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 3 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:21:10,958 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 455 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:21:10,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2024-11-28 04:21:11,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 397. [2024-11-28 04:21:11,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 300 states have (on average 1.1933333333333334) internal successors, (358), 310 states have internal predecessors, (358), 56 states have call successors, (56), 32 states have call predecessors, (56), 40 states have return successors, (74), 54 states have call predecessors, (74), 52 states have call successors, (74) [2024-11-28 04:21:11,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 488 transitions. [2024-11-28 04:21:11,039 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 488 transitions. Word has length 113 [2024-11-28 04:21:11,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:21:11,040 INFO L471 AbstractCegarLoop]: Abstraction has 397 states and 488 transitions. [2024-11-28 04:21:11,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-11-28 04:21:11,040 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 488 transitions. [2024-11-28 04:21:11,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-28 04:21:11,041 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:21:11,041 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:21:11,052 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-28 04:21:11,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:21:11,242 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:21:11,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:21:11,243 INFO L85 PathProgramCache]: Analyzing trace with hash 922440543, now seen corresponding path program 1 times [2024-11-28 04:21:11,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:21:11,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2092131237] [2024-11-28 04:21:11,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:21:11,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:21:11,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:21:11,245 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:21:11,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 04:21:11,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:21:11,504 INFO L256 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 04:21:11,508 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:21:11,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 32 [2024-11-28 04:21:11,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-28 04:21:11,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2024-11-28 04:21:11,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:21:11,844 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 11 treesize of output 1 [2024-11-28 04:21:12,028 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43| (_ BitVec 64))) (and (not (= |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43| (_ bv0 64))) (= (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43|) (_ bv24 64)) |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43|))) (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43| (_ BitVec 64))) (let ((.cse1 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43|))) (let ((.cse0 (select .cse1 (_ bv24 64)))) (and (not (= .cse0 (_ bv0 64))) (exists ((v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (= .cse1 (store (select (store (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43| v_DerPreprocessor_1) .cse0 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43|) (_ bv24 64) .cse0)))))))) is different from true [2024-11-28 04:21:14,063 WARN L873 $PredicateComparison]: unable to prove that (and (or (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43| (_ BitVec 64))) (and (not (= |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43| (_ bv0 64))) (= (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43|) (_ bv24 64)) |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43|))) (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43| (_ BitVec 64))) (let ((.cse1 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43|))) (let ((.cse0 (select .cse1 (_ bv24 64)))) (and (not (= .cse0 (_ bv0 64))) (exists ((v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (= .cse1 (store (select (store (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43| v_DerPreprocessor_1) .cse0 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43|) (_ bv24 64) .cse0)))))))) (let ((.cse3 (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base|))) (let ((.cse2 (select .cse3 (_ bv24 64)))) (or (and (not (= (_ bv0 64) |c_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base|)) (= .cse2 |c_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base|)) (and (not (= (_ bv0 64) .cse2)) (exists ((v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (= .cse3 (store (select (store (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base| v_DerPreprocessor_1) .cse2 v_DerPreprocessor_2) |c_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base|) (_ bv24 64) .cse2))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44| (_ BitVec 64))) (let ((.cse4 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44|))) (let ((.cse5 (select .cse4 (_ bv24 64)))) (and (exists ((v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (= .cse4 (store (select (store (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44| v_DerPreprocessor_1) .cse5 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44|) (_ bv24 64) .cse5))) (not (= (_ bv0 64) .cse5)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44| (_ BitVec 64))) (and (= |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44| (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44|) (_ bv24 64))) (not (= |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44| (_ bv0 64)))))) (= (_ bv0 64) |c_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.offset|)) is different from true [2024-11-28 04:21:14,235 WARN L873 $PredicateComparison]: unable to prove that (and (or (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43| (_ BitVec 64))) (and (not (= |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43| (_ bv0 64))) (= (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43|) (_ bv24 64)) |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43|))) (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43| (_ BitVec 64))) (let ((.cse1 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43|))) (let ((.cse0 (select .cse1 (_ bv24 64)))) (and (not (= .cse0 (_ bv0 64))) (exists ((v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (= .cse1 (store (select (store (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43| v_DerPreprocessor_1) .cse0 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43|) (_ bv24 64) .cse0)))))))) (= (_ bv0 64) |c_ULTIMATE.start_aws_linked_list_end_~list#1.offset|) (or (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44| (_ BitVec 64))) (let ((.cse2 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44|))) (let ((.cse3 (select .cse2 (_ bv24 64)))) (and (exists ((v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (= .cse2 (store (select (store (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44| v_DerPreprocessor_1) .cse3 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44|) (_ bv24 64) .cse3))) (not (= (_ bv0 64) .cse3)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44| (_ BitVec 64))) (and (= |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44| (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44|) (_ bv24 64))) (not (= |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44| (_ bv0 64)))))) (let ((.cse5 (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_aws_linked_list_end_~list#1.base|))) (let ((.cse4 (select .cse5 (_ bv24 64)))) (or (and (not (= (_ bv0 64) |c_ULTIMATE.start_aws_linked_list_end_~list#1.base|)) (= .cse4 |c_ULTIMATE.start_aws_linked_list_end_~list#1.base|)) (and (not (= .cse4 (_ bv0 64))) (exists ((v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (= (store (select (store (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_aws_linked_list_end_~list#1.base| v_DerPreprocessor_1) .cse4 v_DerPreprocessor_2) |c_ULTIMATE.start_aws_linked_list_end_~list#1.base|) (_ bv24 64) .cse4) .cse5))))))) is different from true [2024-11-28 04:21:14,361 WARN L873 $PredicateComparison]: unable to prove that (and (or (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43| (_ BitVec 64))) (and (not (= |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43| (_ bv0 64))) (= (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43|) (_ bv24 64)) |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43|))) (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43| (_ BitVec 64))) (let ((.cse1 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43|))) (let ((.cse0 (select .cse1 (_ bv24 64)))) (and (not (= .cse0 (_ bv0 64))) (exists ((v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (= .cse1 (store (select (store (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43| v_DerPreprocessor_1) .cse0 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43|) (_ bv24 64) .cse0)))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_27| (_ BitVec 64))) (and (not (= (_ bv0 64) |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_27|)) (= (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_27|) (_ bv24 64)) |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_27|))) (exists ((|v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_27| (_ BitVec 64))) (let ((.cse3 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_27|))) (let ((.cse2 (select .cse3 (_ bv24 64)))) (and (not (= (_ bv0 64) .cse2)) (exists ((v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (= .cse3 (store (select (store (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_27| v_DerPreprocessor_1) .cse2 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_27|) (_ bv24 64) .cse2)))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44| (_ BitVec 64))) (let ((.cse4 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44|))) (let ((.cse5 (select .cse4 (_ bv24 64)))) (and (exists ((v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (= .cse4 (store (select (store (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44| v_DerPreprocessor_1) .cse5 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44|) (_ bv24 64) .cse5))) (not (= (_ bv0 64) .cse5)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44| (_ BitVec 64))) (and (= |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44| (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44|) (_ bv24 64))) (not (= |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44| (_ bv0 64))))))) is different from true [2024-11-28 04:21:17,358 WARN L873 $PredicateComparison]: unable to prove that (and (or (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43| (_ BitVec 64))) (and (not (= |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43| (_ bv0 64))) (= (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43|) (_ bv24 64)) |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43|))) (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43| (_ BitVec 64))) (let ((.cse1 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43|))) (let ((.cse0 (select .cse1 (_ bv24 64)))) (and (not (= .cse0 (_ bv0 64))) (exists ((v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (= .cse1 (store (select (store (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43| v_DerPreprocessor_1) .cse0 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43|) (_ bv24 64) .cse0)))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_27| (_ BitVec 64))) (and (not (= (_ bv0 64) |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_27|)) (= (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_27|) (_ bv24 64)) |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_27|))) (exists ((|v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_27| (_ BitVec 64))) (let ((.cse3 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_27|))) (let ((.cse2 (select .cse3 (_ bv24 64)))) (and (not (= (_ bv0 64) .cse2)) (exists ((v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (= .cse3 (store (select (store (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_27| v_DerPreprocessor_1) .cse2 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_27|) (_ bv24 64) .cse2)))))))) (= (_ bv0 64) |c_ULTIMATE.start_aws_linked_list_end_~list#1.offset|) (or (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44| (_ BitVec 64))) (let ((.cse4 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44|))) (let ((.cse5 (select .cse4 (_ bv24 64)))) (and (exists ((v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (= .cse4 (store (select (store (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44| v_DerPreprocessor_1) .cse5 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44|) (_ bv24 64) .cse5))) (not (= (_ bv0 64) .cse5)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44| (_ BitVec 64))) (and (= |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44| (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44|) (_ bv24 64))) (not (= |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44| (_ bv0 64)))))) (let ((.cse7 (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_aws_linked_list_end_~list#1.base|))) (let ((.cse6 (select .cse7 (_ bv24 64)))) (or (and (not (= (_ bv0 64) |c_ULTIMATE.start_aws_linked_list_end_~list#1.base|)) (= .cse6 |c_ULTIMATE.start_aws_linked_list_end_~list#1.base|)) (and (not (= .cse6 (_ bv0 64))) (exists ((v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (= (store (select (store (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_aws_linked_list_end_~list#1.base| v_DerPreprocessor_1) .cse6 v_DerPreprocessor_2) |c_ULTIMATE.start_aws_linked_list_end_~list#1.base|) (_ bv24 64) .cse6) .cse7))))))) is different from true [2024-11-28 04:21:20,214 WARN L873 $PredicateComparison]: unable to prove that (and (or (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43| (_ BitVec 64))) (and (not (= |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43| (_ bv0 64))) (= (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43|) (_ bv24 64)) |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43|))) (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43| (_ BitVec 64))) (let ((.cse1 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43|))) (let ((.cse0 (select .cse1 (_ bv24 64)))) (and (not (= .cse0 (_ bv0 64))) (exists ((v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (= .cse1 (store (select (store (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43| v_DerPreprocessor_1) .cse0 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43|) (_ bv24 64) .cse0)))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_27| (_ BitVec 64))) (and (not (= (_ bv0 64) |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_27|)) (= (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_27|) (_ bv24 64)) |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_27|))) (exists ((|v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_27| (_ BitVec 64))) (let ((.cse3 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_27|))) (let ((.cse2 (select .cse3 (_ bv24 64)))) (and (not (= (_ bv0 64) .cse2)) (exists ((v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (= .cse3 (store (select (store (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_27| v_DerPreprocessor_1) .cse2 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_27|) (_ bv24 64) .cse2)))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_29| (_ BitVec 64))) (and (= |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_29| (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_29|) (_ bv24 64))) (not (= (_ bv0 64) |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_29|)))) (exists ((|v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_29| (_ BitVec 64))) (let ((.cse5 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_29|))) (let ((.cse4 (select .cse5 (_ bv24 64)))) (and (exists ((v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (= (store (select (store (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_29| v_DerPreprocessor_1) .cse4 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_29|) (_ bv24 64) .cse4) .cse5)) (not (= (_ bv0 64) .cse4))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_28| (_ BitVec 64))) (and (not (= (_ bv0 64) |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_28|)) (= |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_28| (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_28|) (_ bv24 64))))) (exists ((|v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_28| (_ BitVec 64))) (let ((.cse7 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_28|))) (let ((.cse6 (select .cse7 (_ bv24 64)))) (and (not (= (_ bv0 64) .cse6)) (exists ((v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (= (store (select (store (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_28| v_DerPreprocessor_1) .cse6 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_28|) (_ bv24 64) .cse6) .cse7))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44| (_ BitVec 64))) (let ((.cse8 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44|))) (let ((.cse9 (select .cse8 (_ bv24 64)))) (and (exists ((v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (= .cse8 (store (select (store (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44| v_DerPreprocessor_1) .cse9 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44|) (_ bv24 64) .cse9))) (not (= (_ bv0 64) .cse9)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44| (_ BitVec 64))) (and (= |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44| (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44|) (_ bv24 64))) (not (= |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44| (_ bv0 64))))))) is different from true [2024-11-28 04:21:20,462 WARN L873 $PredicateComparison]: unable to prove that (and (= |c_aws_linked_list_is_valid_#in~list#1.offset| |c_aws_linked_list_is_valid_~list#1.offset|) (or (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43| (_ BitVec 64))) (and (not (= |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43| (_ bv0 64))) (= (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43|) (_ bv24 64)) |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43|))) (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43| (_ BitVec 64))) (let ((.cse1 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43|))) (let ((.cse0 (select .cse1 (_ bv24 64)))) (and (not (= .cse0 (_ bv0 64))) (exists ((v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (= .cse1 (store (select (store (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43| v_DerPreprocessor_1) .cse0 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43|) (_ bv24 64) .cse0)))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_27| (_ BitVec 64))) (and (not (= (_ bv0 64) |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_27|)) (= (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_27|) (_ bv24 64)) |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_27|))) (exists ((|v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_27| (_ BitVec 64))) (let ((.cse3 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_27|))) (let ((.cse2 (select .cse3 (_ bv24 64)))) (and (not (= (_ bv0 64) .cse2)) (exists ((v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (= .cse3 (store (select (store (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_27| v_DerPreprocessor_1) .cse2 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_27|) (_ bv24 64) .cse2)))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_29| (_ BitVec 64))) (and (= |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_29| (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_29|) (_ bv24 64))) (not (= (_ bv0 64) |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_29|)))) (exists ((|v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_29| (_ BitVec 64))) (let ((.cse5 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_29|))) (let ((.cse4 (select .cse5 (_ bv24 64)))) (and (exists ((v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (= (store (select (store (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_29| v_DerPreprocessor_1) .cse4 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_29|) (_ bv24 64) .cse4) .cse5)) (not (= (_ bv0 64) .cse4))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_28| (_ BitVec 64))) (and (not (= (_ bv0 64) |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_28|)) (= |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_28| (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_28|) (_ bv24 64))))) (exists ((|v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_28| (_ BitVec 64))) (let ((.cse7 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_28|))) (let ((.cse6 (select .cse7 (_ bv24 64)))) (and (not (= (_ bv0 64) .cse6)) (exists ((v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (= (store (select (store (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_28| v_DerPreprocessor_1) .cse6 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_28|) (_ bv24 64) .cse6) .cse7))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44| (_ BitVec 64))) (let ((.cse8 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44|))) (let ((.cse9 (select .cse8 (_ bv24 64)))) (and (exists ((v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (= .cse8 (store (select (store (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44| v_DerPreprocessor_1) .cse9 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44|) (_ bv24 64) .cse9))) (not (= (_ bv0 64) .cse9)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44| (_ BitVec 64))) (and (= |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44| (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44|) (_ bv24 64))) (not (= |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44| (_ bv0 64)))))) (= |c_aws_linked_list_is_valid_#in~list#1.base| |c_aws_linked_list_is_valid_~list#1.base|)) is different from true [2024-11-28 04:21:21,710 WARN L873 $PredicateComparison]: unable to prove that (and (or (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43| (_ BitVec 64))) (and (not (= |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43| (_ bv0 64))) (= (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43|) (_ bv24 64)) |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43|))) (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43| (_ BitVec 64))) (let ((.cse1 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43|))) (let ((.cse0 (select .cse1 (_ bv24 64)))) (and (not (= .cse0 (_ bv0 64))) (exists ((v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (= .cse1 (store (select (store (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43| v_DerPreprocessor_1) .cse0 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_43|) (_ bv24 64) .cse0)))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_27| (_ BitVec 64))) (and (not (= (_ bv0 64) |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_27|)) (= (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_27|) (_ bv24 64)) |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_27|))) (exists ((|v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_27| (_ BitVec 64))) (let ((.cse3 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_27|))) (let ((.cse2 (select .cse3 (_ bv24 64)))) (and (not (= (_ bv0 64) .cse2)) (exists ((v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (= .cse3 (store (select (store (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_27| v_DerPreprocessor_1) .cse2 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_27|) (_ bv24 64) .cse2)))))))) (or |c_aws_linked_list_is_valid_#t~short299#1| (= (_ bv0 64) (select (select |c_#memory_$Pointer$#2.base| |c_aws_linked_list_is_valid_#in~list#1.base|) (bvadd (_ bv24 64) |c_aws_linked_list_is_valid_#in~list#1.offset|)))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_29| (_ BitVec 64))) (and (= |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_29| (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_29|) (_ bv24 64))) (not (= (_ bv0 64) |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_29|)))) (exists ((|v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_29| (_ BitVec 64))) (let ((.cse5 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_29|))) (let ((.cse4 (select .cse5 (_ bv24 64)))) (and (exists ((v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (= (store (select (store (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_29| v_DerPreprocessor_1) .cse4 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_29|) (_ bv24 64) .cse4) .cse5)) (not (= (_ bv0 64) .cse4))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_28| (_ BitVec 64))) (and (not (= (_ bv0 64) |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_28|)) (= |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_28| (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_28|) (_ bv24 64))))) (exists ((|v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_28| (_ BitVec 64))) (let ((.cse7 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_28|))) (let ((.cse6 (select .cse7 (_ bv24 64)))) (and (not (= (_ bv0 64) .cse6)) (exists ((v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (= (store (select (store (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_28| v_DerPreprocessor_1) .cse6 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_end_~list#1.base_BEFORE_CALL_28|) (_ bv24 64) .cse6) .cse7))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44| (_ BitVec 64))) (let ((.cse8 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44|))) (let ((.cse9 (select .cse8 (_ bv24 64)))) (and (exists ((v_DerPreprocessor_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_DerPreprocessor_1 (Array (_ BitVec 64) (_ BitVec 64)))) (= .cse8 (store (select (store (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44| v_DerPreprocessor_1) .cse9 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44|) (_ bv24 64) .cse9))) (not (= (_ bv0 64) .cse9)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44| (_ BitVec 64))) (and (= |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44| (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44|) (_ bv24 64))) (not (= |v_ULTIMATE.start_aws_linked_list_end_harness_~#list~0#1.base_BEFORE_CALL_44| (_ bv0 64))))))) is different from true [2024-11-28 04:21:23,805 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 53 not checked. [2024-11-28 04:21:23,805 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:21:27,918 INFO L349 Elim1Store]: treesize reduction 19, result has 62.0 percent of original size [2024-11-28 04:21:27,918 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 198 treesize of output 185 [2024-11-28 04:21:27,949 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 72 treesize of output 68 [2024-11-28 04:21:27,996 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:21:27,996 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 91 treesize of output 93 [2024-11-28 04:21:28,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-11-28 04:21:28,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2024-11-28 04:21:28,690 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-28 04:21:28,691 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:21:28,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092131237] [2024-11-28 04:21:28,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092131237] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 04:21:28,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:21:28,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [19] total 27 [2024-11-28 04:21:28,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653787654] [2024-11-28 04:21:28,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:21:28,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 04:21:28,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:21:28,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 04:21:28,693 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=271, Unknown=27, NotChecked=328, Total=702 [2024-11-28 04:21:28,693 INFO L87 Difference]: Start difference. First operand 397 states and 488 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 5 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-28 04:21:30,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:21:30,738 INFO L93 Difference]: Finished difference Result 532 states and 652 transitions. [2024-11-28 04:21:30,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:21:30,739 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 5 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 108 [2024-11-28 04:21:30,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:21:30,742 INFO L225 Difference]: With dead ends: 532 [2024-11-28 04:21:30,742 INFO L226 Difference]: Without dead ends: 401 [2024-11-28 04:21:30,744 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=92, Invalid=372, Unknown=30, NotChecked=376, Total=870 [2024-11-28 04:21:30,745 INFO L435 NwaCegarLoop]: 93 mSDtfsCounter, 18 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:21:30,746 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 492 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 04:21:30,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2024-11-28 04:21:30,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 206. [2024-11-28 04:21:30,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 155 states have (on average 1.1806451612903226) internal successors, (183), 160 states have internal predecessors, (183), 29 states have call successors, (29), 17 states have call predecessors, (29), 21 states have return successors, (38), 28 states have call predecessors, (38), 27 states have call successors, (38) [2024-11-28 04:21:30,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 250 transitions. [2024-11-28 04:21:30,813 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 250 transitions. Word has length 108 [2024-11-28 04:21:30,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:21:30,814 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 250 transitions. [2024-11-28 04:21:30,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 5 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-28 04:21:30,814 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 250 transitions. [2024-11-28 04:21:30,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-28 04:21:30,815 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:21:30,815 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] [2024-11-28 04:21:30,829 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-28 04:21:31,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:21:31,016 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:21:31,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:21:31,017 INFO L85 PathProgramCache]: Analyzing trace with hash -73683362, now seen corresponding path program 1 times [2024-11-28 04:21:31,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:21:31,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1045197702] [2024-11-28 04:21:31,017 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:21:31,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:21:31,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:21:31,019 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:21:31,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 04:21:31,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:21:31,490 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 04:21:31,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:21:31,865 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2024-11-28 04:21:31,865 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 04:21:31,866 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-28 04:21:31,885 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-28 04:21:32,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:21:32,071 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:21:32,127 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 04:21:32,130 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:21:32 BoogieIcfgContainer [2024-11-28 04:21:32,130 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 04:21:32,131 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 04:21:32,131 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 04:21:32,131 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 04:21:32,132 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:19:45" (3/4) ... [2024-11-28 04:21:32,133 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-28 04:21:32,211 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 58. [2024-11-28 04:21:32,314 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 04:21:32,315 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 04:21:32,315 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 04:21:32,316 INFO L158 Benchmark]: Toolchain (without parser) took 111634.09ms. Allocated memory was 117.4MB in the beginning and 243.3MB in the end (delta: 125.8MB). Free memory was 86.7MB in the beginning and 134.7MB in the end (delta: -48.1MB). Peak memory consumption was 71.3MB. Max. memory is 16.1GB. [2024-11-28 04:21:32,316 INFO L158 Benchmark]: CDTParser took 0.61ms. Allocated memory is still 83.9MB. Free memory is still 64.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:21:32,316 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3298.34ms. Allocated memory is still 117.4MB. Free memory was 86.7MB in the beginning and 37.0MB in the end (delta: 49.6MB). Peak memory consumption was 77.7MB. Max. memory is 16.1GB. [2024-11-28 04:21:32,316 INFO L158 Benchmark]: Boogie Procedure Inliner took 157.22ms. Allocated memory is still 117.4MB. Free memory was 37.0MB in the beginning and 73.0MB in the end (delta: -36.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:21:32,317 INFO L158 Benchmark]: Boogie Preprocessor took 112.01ms. Allocated memory is still 117.4MB. Free memory was 73.0MB in the beginning and 68.5MB in the end (delta: 4.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:21:32,317 INFO L158 Benchmark]: RCFGBuilder took 796.80ms. Allocated memory is still 117.4MB. Free memory was 68.5MB in the beginning and 41.2MB in the end (delta: 27.3MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-28 04:21:32,317 INFO L158 Benchmark]: TraceAbstraction took 107078.58ms. Allocated memory was 117.4MB in the beginning and 243.3MB in the end (delta: 125.8MB). Free memory was 40.4MB in the beginning and 145.3MB in the end (delta: -104.8MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. [2024-11-28 04:21:32,322 INFO L158 Benchmark]: Witness Printer took 184.01ms. Allocated memory is still 243.3MB. Free memory was 145.3MB in the beginning and 134.7MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:21:32,323 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61ms. Allocated memory is still 83.9MB. Free memory is still 64.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3298.34ms. Allocated memory is still 117.4MB. Free memory was 86.7MB in the beginning and 37.0MB in the end (delta: 49.6MB). Peak memory consumption was 77.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 157.22ms. Allocated memory is still 117.4MB. Free memory was 37.0MB in the beginning and 73.0MB in the end (delta: -36.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 112.01ms. Allocated memory is still 117.4MB. Free memory was 73.0MB in the beginning and 68.5MB in the end (delta: 4.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 796.80ms. Allocated memory is still 117.4MB. Free memory was 68.5MB in the beginning and 41.2MB in the end (delta: 27.3MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 107078.58ms. Allocated memory was 117.4MB in the beginning and 243.3MB in the end (delta: 125.8MB). Free memory was 40.4MB in the beginning and 145.3MB in the end (delta: -104.8MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. * Witness Printer took 184.01ms. Allocated memory is still 243.3MB. Free memory was 145.3MB in the beginning and 134.7MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 223]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L6901-L6906] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L6901-L6906] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L6901-L6906] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L6901-L6906] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L6901-L6906] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L6901-L6906] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L7326] static __thread int tl_last_error = 0; VAL [s_can_fail_allocator_static={4:0}, tl_last_error=0] [L7360] CALL aws_linked_list_end_harness() [L7344] struct aws_linked_list list; [L7346] CALL ensure_linked_list_is_allocated(&list, 20) [L6743] CALL, EXPR nondet_uint64_t() VAL [s_can_fail_allocator_static={4:0}, tl_last_error=0] [L266] return __VERIFIER_nondet_ulong(); [L6743] RET, EXPR nondet_uint64_t() VAL [list={5:0}, max_length=20, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L6743] size_t length = nondet_uint64_t(); [L6744] CALL assume_abort_if_not(length <= max_length) VAL [\old(cond)=1, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L6744] RET assume_abort_if_not(length <= max_length) VAL [length=0, list={5:0}, max_length=20, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L6746-L6747] list->head.prev = ((void *)0) [L6749-L6750] list->tail.next = ((void *)0) [L6753] struct aws_linked_list_node *curr = &list->head; [L6755] size_t i = 0; VAL [curr={5:0}, i=0, length=0, list={5:0}, max_length=20, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L6755] COND FALSE !(i < length) VAL [curr={5:0}, list={5:0}, max_length=20, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L6764] curr->next = &list->tail [L6765] list->tail.prev = curr VAL [s_can_fail_allocator_static={4:0}, tl_last_error=0] [L7346] RET ensure_linked_list_is_allocated(&list, 20) [L7349] CALL, EXPR aws_linked_list_is_valid(&list) VAL [s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4694] EXPR list && list->head.next VAL [\old(list)={5:0}, list={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4694] EXPR list && list->head.next [L4694] EXPR list->head.next [L4694] EXPR list && list->head.next VAL [\old(list)={5:0}, list={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4694-L4695] EXPR list && list->head.next && list->head.prev == ((void *)0) VAL [\old(list)={5:0}, list={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4694-L4695] EXPR list && list->head.next && list->head.prev == ((void *)0) [L4694] EXPR list->head.prev [L4694-L4695] EXPR list && list->head.next && list->head.prev == ((void *)0) VAL [\old(list)={5:0}, list={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4694-L4696] EXPR list && list->head.next && list->head.prev == ((void *)0) && list->tail.prev VAL [\old(list)={5:0}, list={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4694-L4696] EXPR list && list->head.next && list->head.prev == ((void *)0) && list->tail.prev [L4696] EXPR list->tail.prev [L4694-L4696] EXPR list && list->head.next && list->head.prev == ((void *)0) && list->tail.prev VAL [\old(list)={5:0}, list={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4694-L4697] list && list->head.next && list->head.prev == ((void *)0) && list->tail.prev && list->tail.next == ((void *)0) VAL [\old(list)={5:0}, list={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4694-L4697] list && list->head.next && list->head.prev == ((void *)0) && list->tail.prev && list->tail.next == ((void *)0) [L4696] EXPR list->tail.next [L4694-L4697] list && list->head.next && list->head.prev == ((void *)0) && list->tail.prev && list->tail.next == ((void *)0) VAL [\old(list)={5:0}, list={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4694-L4697] COND TRUE list && list->head.next && list->head.prev == ((void *)0) && list->tail.prev && list->tail.next == ((void *)0) [L4700] CALL, EXPR aws_linked_list_is_valid_deep(list) [L4734] COND FALSE !(!list) [L4740] const struct aws_linked_list_node *temp = &list->head; [L4743-L4746] _Bool head_reaches_tail = 0 ; VAL [head_reaches_tail=0, list={5:0}, s_can_fail_allocator_static={4:0}, temp={5:0}, tl_last_error=0] [L4750] COND TRUE \read(*temp) VAL [head_reaches_tail=0, list={5:0}, s_can_fail_allocator_static={4:0}, temp={5:0}, tl_last_error=0] [L4751] COND FALSE !(temp == &list->tail) VAL [head_reaches_tail=0, list={5:0}, s_can_fail_allocator_static={4:0}, temp={5:0}, tl_last_error=0] [L4756] CALL, EXPR aws_linked_list_node_next_is_valid(temp) VAL [\old(node)={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4718] EXPR node && node->next VAL [\old(node)={5:0}, node={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4718] EXPR node && node->next [L4718] EXPR node->next [L4718] EXPR node && node->next VAL [\old(node)={5:0}, node={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4718] EXPR node && node->next && node->next->prev == node VAL [\old(node)={5:0}, node={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4718] EXPR node && node->next && node->next->prev == node [L4718] EXPR node->next [L4718] EXPR node->next->prev [L4718] EXPR node && node->next && node->next->prev == node VAL [\old(node)={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4718] return node && node->next && node->next->prev == node; [L4756] RET, EXPR aws_linked_list_node_next_is_valid(temp) VAL [head_reaches_tail=0, list={5:0}, s_can_fail_allocator_static={4:0}, temp={5:0}, tl_last_error=0] [L4756] COND FALSE !(!aws_linked_list_node_next_is_valid(temp)) [L4762] EXPR temp->next [L4762] temp = temp->next [L4750] COND TRUE \read(*temp) VAL [head_reaches_tail=0, list={5:0}, s_can_fail_allocator_static={4:0}, temp={5:16}, tl_last_error=0] [L4751] COND TRUE temp == &list->tail [L4752-L4753] head_reaches_tail = 1 VAL [head_reaches_tail=1, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4764] return head_reaches_tail; VAL [\result=1, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4700] RET, EXPR aws_linked_list_is_valid_deep(list) [L4700] return aws_linked_list_is_valid_deep(list); [L7349] RET, EXPR aws_linked_list_is_valid(&list) VAL [list={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L7349] CALL assume_abort_if_not(aws_linked_list_is_valid(&list)) VAL [\old(cond)=1, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L7349] RET assume_abort_if_not(aws_linked_list_is_valid(&list)) VAL [list={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L7354] CALL aws_linked_list_end(&list) [L4799] CALL, EXPR aws_linked_list_is_valid(list) VAL [s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4694] EXPR list && list->head.next VAL [\old(list)={5:0}, list={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4694] EXPR list && list->head.next [L4694] EXPR list->head.next [L4694] EXPR list && list->head.next VAL [\old(list)={5:0}, list={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4694-L4695] EXPR list && list->head.next && list->head.prev == ((void *)0) VAL [\old(list)={5:0}, list={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4694-L4695] EXPR list && list->head.next && list->head.prev == ((void *)0) [L4694] EXPR list->head.prev [L4694-L4695] EXPR list && list->head.next && list->head.prev == ((void *)0) VAL [\old(list)={5:0}, list={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4694-L4696] EXPR list && list->head.next && list->head.prev == ((void *)0) && list->tail.prev VAL [\old(list)={5:0}, list={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4694-L4696] EXPR list && list->head.next && list->head.prev == ((void *)0) && list->tail.prev [L4696] EXPR list->tail.prev [L4694-L4696] EXPR list && list->head.next && list->head.prev == ((void *)0) && list->tail.prev VAL [\old(list)={5:0}, list={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4694-L4697] list && list->head.next && list->head.prev == ((void *)0) && list->tail.prev && list->tail.next == ((void *)0) VAL [\old(list)={5:0}, list={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4694-L4697] list && list->head.next && list->head.prev == ((void *)0) && list->tail.prev && list->tail.next == ((void *)0) [L4696] EXPR list->tail.next [L4694-L4697] list && list->head.next && list->head.prev == ((void *)0) && list->tail.prev && list->tail.next == ((void *)0) VAL [\old(list)={5:0}, list={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4694-L4697] COND TRUE list && list->head.next && list->head.prev == ((void *)0) && list->tail.prev && list->tail.next == ((void *)0) [L4700] CALL, EXPR aws_linked_list_is_valid_deep(list) [L4734] COND FALSE !(!list) [L4740] const struct aws_linked_list_node *temp = &list->head; [L4743-L4746] _Bool head_reaches_tail = 0 ; VAL [head_reaches_tail=0, list={5:0}, s_can_fail_allocator_static={4:0}, temp={5:0}, tl_last_error=0] [L4750] COND TRUE \read(*temp) VAL [head_reaches_tail=0, list={5:0}, s_can_fail_allocator_static={4:0}, temp={5:0}, tl_last_error=0] [L4751] COND FALSE !(temp == &list->tail) VAL [head_reaches_tail=0, list={5:0}, s_can_fail_allocator_static={4:0}, temp={5:0}, tl_last_error=0] [L4756] CALL, EXPR aws_linked_list_node_next_is_valid(temp) VAL [\old(node)={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4718] EXPR node && node->next VAL [\old(node)={5:0}, node={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4718] EXPR node && node->next [L4718] EXPR node->next [L4718] EXPR node && node->next VAL [\old(node)={5:0}, node={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4718] EXPR node && node->next && node->next->prev == node VAL [\old(node)={5:0}, node={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4718] EXPR node && node->next && node->next->prev == node [L4718] EXPR node->next [L4718] EXPR node->next->prev [L4718] EXPR node && node->next && node->next->prev == node VAL [\old(node)={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4718] return node && node->next && node->next->prev == node; [L4756] RET, EXPR aws_linked_list_node_next_is_valid(temp) VAL [head_reaches_tail=0, list={5:0}, s_can_fail_allocator_static={4:0}, temp={5:0}, tl_last_error=0] [L4756] COND FALSE !(!aws_linked_list_node_next_is_valid(temp)) [L4762] EXPR temp->next [L4762] temp = temp->next [L4750] COND TRUE \read(*temp) VAL [head_reaches_tail=0, list={5:0}, s_can_fail_allocator_static={4:0}, temp={5:16}, tl_last_error=0] [L4751] COND TRUE temp == &list->tail [L4752-L4753] head_reaches_tail = 1 VAL [head_reaches_tail=1, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4764] return head_reaches_tail; VAL [\result=1, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4700] RET, EXPR aws_linked_list_is_valid_deep(list) [L4700] return aws_linked_list_is_valid_deep(list); [L4799] RET, EXPR aws_linked_list_is_valid(list) VAL [list={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4799] CALL assume_abort_if_not((aws_linked_list_is_valid(list))) VAL [\old(cond)=1, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4799] RET assume_abort_if_not((aws_linked_list_is_valid(list))) VAL [list={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4800] const struct aws_linked_list_node *rval = &list->tail; VAL [list={5:0}, rval={5:16}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4801] CALL, EXPR aws_linked_list_is_valid(list) VAL [s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4694] EXPR list && list->head.next VAL [\old(list)={5:0}, list={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4694] EXPR list && list->head.next [L4694] EXPR list->head.next [L4694] EXPR list && list->head.next VAL [\old(list)={5:0}, list={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4694-L4695] EXPR list && list->head.next && list->head.prev == ((void *)0) VAL [\old(list)={5:0}, list={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4694-L4695] EXPR list && list->head.next && list->head.prev == ((void *)0) [L4694] EXPR list->head.prev [L4694-L4695] EXPR list && list->head.next && list->head.prev == ((void *)0) VAL [\old(list)={5:0}, list={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4694-L4696] EXPR list && list->head.next && list->head.prev == ((void *)0) && list->tail.prev VAL [\old(list)={5:0}, list={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4694-L4696] EXPR list && list->head.next && list->head.prev == ((void *)0) && list->tail.prev [L4696] EXPR list->tail.prev [L4694-L4696] EXPR list && list->head.next && list->head.prev == ((void *)0) && list->tail.prev VAL [\old(list)={5:0}, list={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4694-L4697] list && list->head.next && list->head.prev == ((void *)0) && list->tail.prev && list->tail.next == ((void *)0) VAL [\old(list)={5:0}, list={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4694-L4697] list && list->head.next && list->head.prev == ((void *)0) && list->tail.prev && list->tail.next == ((void *)0) [L4696] EXPR list->tail.next [L4694-L4697] list && list->head.next && list->head.prev == ((void *)0) && list->tail.prev && list->tail.next == ((void *)0) VAL [\old(list)={5:0}, list={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4694-L4697] COND TRUE list && list->head.next && list->head.prev == ((void *)0) && list->tail.prev && list->tail.next == ((void *)0) [L4700] CALL, EXPR aws_linked_list_is_valid_deep(list) [L4734] COND FALSE !(!list) [L4740] const struct aws_linked_list_node *temp = &list->head; [L4743-L4746] _Bool head_reaches_tail = 0 ; VAL [head_reaches_tail=0, list={5:0}, s_can_fail_allocator_static={4:0}, temp={5:0}, tl_last_error=0] [L4750] COND TRUE \read(*temp) VAL [head_reaches_tail=0, list={5:0}, s_can_fail_allocator_static={4:0}, temp={5:0}, tl_last_error=0] [L4751] COND FALSE !(temp == &list->tail) VAL [head_reaches_tail=0, list={5:0}, s_can_fail_allocator_static={4:0}, temp={5:0}, tl_last_error=0] [L4756] CALL, EXPR aws_linked_list_node_next_is_valid(temp) VAL [\old(node)={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4718] EXPR node && node->next VAL [\old(node)={5:0}, node={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4718] EXPR node && node->next [L4718] EXPR node->next [L4718] EXPR node && node->next VAL [\old(node)={5:0}, node={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4718] EXPR node && node->next && node->next->prev == node VAL [\old(node)={5:0}, node={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4718] EXPR node && node->next && node->next->prev == node [L4718] EXPR node->next [L4718] EXPR node->next->prev [L4718] EXPR node && node->next && node->next->prev == node VAL [\old(node)={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4718] return node && node->next && node->next->prev == node; [L4756] RET, EXPR aws_linked_list_node_next_is_valid(temp) VAL [head_reaches_tail=0, list={5:0}, s_can_fail_allocator_static={4:0}, temp={5:0}, tl_last_error=0] [L4756] COND FALSE !(!aws_linked_list_node_next_is_valid(temp)) [L4762] EXPR temp->next [L4762] temp = temp->next [L4750] COND TRUE \read(*temp) VAL [head_reaches_tail=0, list={5:0}, s_can_fail_allocator_static={4:0}, temp={5:16}, tl_last_error=0] [L4751] COND TRUE temp == &list->tail [L4752-L4753] head_reaches_tail = 1 VAL [head_reaches_tail=1, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4764] return head_reaches_tail; VAL [\result=1, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4700] RET, EXPR aws_linked_list_is_valid_deep(list) [L4700] return aws_linked_list_is_valid_deep(list); [L4801] RET, EXPR aws_linked_list_is_valid(list) VAL [list={5:0}, rval={5:16}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4801] CALL __VERIFIER_assert(!((aws_linked_list_is_valid(list)))) VAL [\old(cond)=0, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L223] COND TRUE !cond VAL [\old(cond)=0, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L223] reach_error() VAL [\old(cond)=0, s_can_fail_allocator_static={4:0}, tl_last_error=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 107.0s, OverallIterations: 22, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 52.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 12 mSolverCounterUnknown, 769 SdHoareTripleChecker+Valid, 46.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 693 mSDsluCounter, 9151 SdHoareTripleChecker+Invalid, 45.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 268 IncrementalHoareTripleChecker+Unchecked, 7504 mSDsCounter, 247 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3391 IncrementalHoareTripleChecker+Invalid, 3918 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 247 mSolverCounterUnsat, 1647 mSDtfsCounter, 3391 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2533 GetRequests, 2279 SyntacticMatches, 29 SemanticMatches, 225 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 998 ImplicationChecksByTransitivity, 24.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=418occurred in iteration=18, InterpolantAutomatonStates: 183, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 21 MinimizatonAttempts, 334 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 43.1s InterpolantComputationTime, 2075 NumberOfCodeBlocks, 2010 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 2463 ConstructedInterpolants, 314 QuantifiedInterpolants, 21269 SizeOfPredicates, 45 NumberOfNonLiveVariables, 5382 ConjunctsInSsa, 221 ConjunctsInUnsatCore, 26 InterpolantComputations, 17 PerfectInterpolantSequences, 1349/1620 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-28 04:21:32,430 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c835e4c-4908-4bde-8e08-0861ec95e249/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE