./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/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_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/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_f573548e-ca55-4f50-a20e-e03c7a6c50cc/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 7aeda8ef841ef7069da39f878404252c33796f5e53e1f416b530364b2ef30242 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:07:46,512 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:07:46,651 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-28 02:07:46,661 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:07:46,663 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:07:46,713 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:07:46,714 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:07:46,714 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:07:46,715 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:07:46,716 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:07:46,717 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:07:46,717 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:07:46,718 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:07:46,718 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:07:46,718 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:07:46,718 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:07:46,718 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:07:46,718 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:07:46,718 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:07:46,719 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:07:46,719 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:07:46,719 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:07:46,719 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:07:46,719 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:07:46,719 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:07:46,719 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:07:46,719 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:07:46,719 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:07:46,720 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:07:46,720 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:07:46,720 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:07:46,721 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:07:46,722 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:07:46,722 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:07:46,722 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:07:46,722 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:07:46,722 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:07:46,723 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:07:46,723 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:07:46,723 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:07:46,723 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:07:46,723 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:07:46,723 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:07:46,724 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:07:46,724 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:07:46,724 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_f573548e-ca55-4f50-a20e-e03c7a6c50cc/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 -> 7aeda8ef841ef7069da39f878404252c33796f5e53e1f416b530364b2ef30242 [2024-11-28 02:07:47,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:07:47,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:07:47,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:07:47,192 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:07:47,193 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:07:47,197 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i [2024-11-28 02:07:50,894 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/data/015f3c1ba/36ba57f89d234255adc064774e85aed2/FLAG599349862 [2024-11-28 02:07:51,714 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:07:51,715 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i [2024-11-28 02:07:51,749 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/data/015f3c1ba/36ba57f89d234255adc064774e85aed2/FLAG599349862 [2024-11-28 02:07:51,766 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/data/015f3c1ba/36ba57f89d234255adc064774e85aed2 [2024-11-28 02:07:51,770 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:07:51,772 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:07:51,773 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:07:51,774 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:07:51,779 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:07:51,781 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:07:51" (1/1) ... [2024-11-28 02:07:51,782 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fa6b1b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:51, skipping insertion in model container [2024-11-28 02:07:51,783 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:07:51" (1/1) ... [2024-11-28 02:07:51,879 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:07:52,190 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_f573548e-ca55-4f50-a20e-e03c7a6c50cc/sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i[4496,4509] [2024-11-28 02:07:52,199 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_f573548e-ca55-4f50-a20e-e03c7a6c50cc/sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i[4556,4569] [2024-11-28 02:07:53,329 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:07:53,331 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:07:53,331 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:07:53,333 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:07:53,334 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:07:53,362 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:07:53,363 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:07:53,366 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:07:53,367 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:07:53,373 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:07:53,375 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:07:53,379 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:07:53,380 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:07:54,271 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_f573548e-ca55-4f50-a20e-e03c7a6c50cc/sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i[150476,150489] [2024-11-28 02:07:54,273 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:07:54,295 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:07:54,314 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_f573548e-ca55-4f50-a20e-e03c7a6c50cc/sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i[4496,4509] [2024-11-28 02:07:54,314 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_f573548e-ca55-4f50-a20e-e03c7a6c50cc/sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i[4556,4569] [2024-11-28 02:07:54,434 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:07:54,434 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:07:54,435 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:07:54,435 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:07:54,440 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:07:54,500 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:07:54,504 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:07:54,505 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:07:54,506 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:07:54,507 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:07:54,508 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:07:54,508 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:07:54,509 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:07:54,663 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_f573548e-ca55-4f50-a20e-e03c7a6c50cc/sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i[150476,150489] [2024-11-28 02:07:54,663 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:07:54,914 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:07:54,915 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:54 WrapperNode [2024-11-28 02:07:54,916 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:07:54,917 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:07:54,917 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:07:54,918 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:07:54,927 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:54" (1/1) ... [2024-11-28 02:07:55,005 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:54" (1/1) ... [2024-11-28 02:07:55,046 INFO L138 Inliner]: procedures = 668, calls = 1039, calls flagged for inlining = 53, calls inlined = 6, statements flattened = 141 [2024-11-28 02:07:55,047 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:07:55,048 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:07:55,048 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:07:55,048 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:07:55,061 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:54" (1/1) ... [2024-11-28 02:07:55,061 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:54" (1/1) ... [2024-11-28 02:07:55,067 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:54" (1/1) ... [2024-11-28 02:07:55,093 INFO L175 MemorySlicer]: Split 24 memory accesses to 3 slices as follows [2, 5, 17]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 6 writes are split as follows [0, 0, 6]. [2024-11-28 02:07:55,094 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:54" (1/1) ... [2024-11-28 02:07:55,094 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:54" (1/1) ... [2024-11-28 02:07:55,113 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:54" (1/1) ... [2024-11-28 02:07:55,115 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:54" (1/1) ... [2024-11-28 02:07:55,120 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:54" (1/1) ... [2024-11-28 02:07:55,124 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:54" (1/1) ... [2024-11-28 02:07:55,126 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:54" (1/1) ... [2024-11-28 02:07:55,132 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:07:55,133 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:07:55,134 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:07:55,134 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:07:55,135 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:54" (1/1) ... [2024-11-28 02:07:55,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:07:55,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:55,181 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:07:55,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:07:55,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 02:07:55,232 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 02:07:55,233 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 02:07:55,233 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2024-11-28 02:07:55,233 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2024-11-28 02:07:55,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 02:07:55,233 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2024-11-28 02:07:55,233 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2024-11-28 02:07:55,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:07:55,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 02:07:55,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 02:07:55,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-28 02:07:55,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:07:55,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:07:55,234 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 02:07:55,234 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 02:07:55,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 02:07:55,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 02:07:55,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 02:07:55,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 02:07:55,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 02:07:55,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-28 02:07:55,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-28 02:07:55,235 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-28 02:07:55,235 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-28 02:07:55,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:07:55,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:07:55,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 02:07:55,646 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:07:55,649 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:07:56,137 INFO L? ?]: Removed 56 outVars from TransFormulas that were not future-live. [2024-11-28 02:07:56,138 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:07:56,158 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:07:56,160 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 02:07:56,161 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:07:56 BoogieIcfgContainer [2024-11-28 02:07:56,161 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:07:56,166 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:07:56,167 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:07:56,175 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:07:56,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:07:51" (1/3) ... [2024-11-28 02:07:56,176 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9039a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:07:56, skipping insertion in model container [2024-11-28 02:07:56,177 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:54" (2/3) ... [2024-11-28 02:07:56,179 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9039a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:07:56, skipping insertion in model container [2024-11-28 02:07:56,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:07:56" (3/3) ... [2024-11-28 02:07:56,183 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_linked_list_rbegin_harness.i [2024-11-28 02:07:56,206 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:07:56,208 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_linked_list_rbegin_harness.i that has 6 procedures, 69 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-28 02:07:56,289 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:07:56,307 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4775fc42, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:07:56,308 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:07:56,315 INFO L276 IsEmpty]: Start isEmpty. Operand has 69 states, 49 states have (on average 1.346938775510204) internal successors, (66), 50 states have internal predecessors, (66), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-28 02:07:56,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-28 02:07:56,330 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:56,332 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 02:07:56,332 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:07:56,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:56,343 INFO L85 PathProgramCache]: Analyzing trace with hash 324213296, now seen corresponding path program 1 times [2024-11-28 02:07:56,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:56,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145948320] [2024-11-28 02:07:56,356 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:56,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:56,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:57,001 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 02:07:57,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:57,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145948320] [2024-11-28 02:07:57,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145948320] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:07:57,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704940322] [2024-11-28 02:07:57,004 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:57,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:57,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:57,007 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:57,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:07:57,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:57,419 INFO L256 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 02:07:57,430 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:57,462 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 02:07:57,464 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:07:57,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704940322] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:57,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:07:57,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 02:07:57,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505021619] [2024-11-28 02:07:57,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:57,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:07:57,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:57,508 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:07:57,508 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:07:57,512 INFO L87 Difference]: Start difference. First operand has 69 states, 49 states have (on average 1.346938775510204) internal successors, (66), 50 states have internal predecessors, (66), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 02:07:57,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:57,553 INFO L93 Difference]: Finished difference Result 130 states and 186 transitions. [2024-11-28 02:07:57,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:07:57,556 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 02:07:57,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:57,566 INFO L225 Difference]: With dead ends: 130 [2024-11-28 02:07:57,566 INFO L226 Difference]: Without dead ends: 64 [2024-11-28 02:07:57,571 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 02:07:57,575 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:57,577 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:07:57,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-28 02:07:57,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-11-28 02:07:57,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 45 states have (on average 1.288888888888889) internal successors, (58), 46 states have internal predecessors, (58), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-28 02:07:57,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 83 transitions. [2024-11-28 02:07:57,624 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 83 transitions. Word has length 68 [2024-11-28 02:07:57,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:57,625 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 83 transitions. [2024-11-28 02:07:57,625 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 02:07:57,625 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 83 transitions. [2024-11-28 02:07:57,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-28 02:07:57,629 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:57,629 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 02:07:57,639 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:07:57,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:57,830 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:07:57,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:57,831 INFO L85 PathProgramCache]: Analyzing trace with hash -962094674, now seen corresponding path program 1 times [2024-11-28 02:07:57,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:57,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726960511] [2024-11-28 02:07:57,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:57,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:58,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:59,250 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 02:07:59,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:59,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726960511] [2024-11-28 02:07:59,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726960511] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:07:59,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213532651] [2024-11-28 02:07:59,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:59,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:59,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:59,260 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:59,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:07:59,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:59,585 INFO L256 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-28 02:07:59,595 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:59,761 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 02:07:59,799 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 02:07:59,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:07:59,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:08:00,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:08:00,021 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 02:08:00,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:08:00,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:08:00,053 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 02:08:03,284 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 02:08:03,285 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:08:03,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213532651] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:08:03,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:08:03,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2024-11-28 02:08:03,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575430338] [2024-11-28 02:08:03,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:08:03,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:08:03,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:08:03,288 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:08:03,288 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-28 02:08:03,288 INFO L87 Difference]: Start difference. First operand 64 states and 83 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 02:08:04,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:08:04,481 INFO L93 Difference]: Finished difference Result 174 states and 234 transitions. [2024-11-28 02:08:04,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:08:04,482 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 68 [2024-11-28 02:08:04,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:08:04,485 INFO L225 Difference]: With dead ends: 174 [2024-11-28 02:08:04,486 INFO L226 Difference]: Without dead ends: 122 [2024-11-28 02:08:04,487 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 53 SyntacticMatches, 8 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:08:04,488 INFO L435 NwaCegarLoop]: 61 mSDtfsCounter, 54 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:08:04,488 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 446 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 02:08:04,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-28 02:08:04,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 117. [2024-11-28 02:08:04,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 83 states have (on average 1.3132530120481927) internal successors, (109), 85 states have internal predecessors, (109), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-28 02:08:04,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 155 transitions. [2024-11-28 02:08:04,519 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 155 transitions. Word has length 68 [2024-11-28 02:08:04,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:08:04,519 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 155 transitions. [2024-11-28 02:08:04,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 02:08:04,520 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 155 transitions. [2024-11-28 02:08:04,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-28 02:08:04,522 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:08:04,523 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 02:08:04,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:08:04,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:08:04,727 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:08:04,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:08:04,727 INFO L85 PathProgramCache]: Analyzing trace with hash 536177768, now seen corresponding path program 1 times [2024-11-28 02:08:04,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:08:04,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155539283] [2024-11-28 02:08:04,728 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:04,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:08:04,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:05,447 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 02:08:05,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:08:05,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155539283] [2024-11-28 02:08:05,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155539283] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:08:05,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55967658] [2024-11-28 02:08:05,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:05,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:08:05,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:08:05,452 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:08:05,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:08:05,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:05,683 INFO L256 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-28 02:08:05,689 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:08:05,884 INFO L349 Elim1Store]: treesize reduction 66, result has 39.4 percent of original size [2024-11-28 02:08:05,884 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 02:08:05,898 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 02:08:05,931 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:08:05,932 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 02:08:06,011 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:08:06,012 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 02:08:06,018 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 02:08:10,160 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_7| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_7|) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_7| Int)) (let ((.cse2 (+ |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_7| 24))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_7|) .cse2))) (and (<= |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_7| .cse0) (exists ((v_DerPreprocessor_1 (Array Int Int))) (let ((.cse1 (select |c_#memory_$Pointer$#2.base| .cse0))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse0 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_7| (store .cse1 .cse2 .cse0)) .cse0) .cse1))))))))) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_7| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_7|) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_7| Int)) (= |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_7| (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_7|) (+ |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_7| 24))))))) is different from true [2024-11-28 02:08:35,934 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse5 (+ |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset| 24))) (let ((.cse3 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) .cse5))) (and (or (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_7| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_7|) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_7| Int)) (let ((.cse2 (+ |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_7| 24))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_7|) .cse2))) (and (<= |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_7| .cse0) (exists ((v_DerPreprocessor_1 (Array Int Int))) (let ((.cse1 (select |c_#memory_$Pointer$#2.base| .cse0))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse0 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_7| (store .cse1 .cse2 .cse0)) .cse0) .cse1))))))))) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_7| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_7|) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_7| Int)) (= |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_7| (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_7|) (+ |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_7| 24))))))) (or (= |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base| .cse3) (exists ((v_DerPreprocessor_1 (Array Int Int))) (let ((.cse4 (select |c_#memory_$Pointer$#2.base| .cse3))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse3 v_DerPreprocessor_1) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base| (store .cse4 .cse5 .cse3)) .cse3) .cse4)))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_8| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_8| Int)) (let ((.cse8 (+ |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_8| 24))) (let ((.cse7 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_8|) .cse8))) (and (exists ((v_DerPreprocessor_1 (Array Int Int))) (let ((.cse6 (select |c_#memory_$Pointer$#2.base| .cse7))) (= .cse6 (select (store (store |c_#memory_$Pointer$#2.base| .cse7 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_8| (store .cse6 .cse8 .cse7)) .cse7)))) (<= |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_8| .cse7))))) (<= 2 |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_8|))) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_8| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_8| Int)) (= |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_8| (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_8|) (+ |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_8| 24)))) (<= 2 |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_8|)))) (<= 2 |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) (<= |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base| .cse3)))) is different from true [2024-11-28 02:08:36,453 WARN L873 $PredicateComparison]: unable to prove that (and (or (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_7| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_7|) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_7| Int)) (let ((.cse2 (+ |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_7| 24))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_7|) .cse2))) (and (<= |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_7| .cse0) (exists ((v_DerPreprocessor_1 (Array Int Int))) (let ((.cse1 (select |c_#memory_$Pointer$#2.base| .cse0))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse0 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_7| (store .cse1 .cse2 .cse0)) .cse0) .cse1))))))))) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_7| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_7|) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_7| Int)) (= |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_7| (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_7|) (+ |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_7| 24))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_8| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_8| Int)) (let ((.cse5 (+ |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_8| 24))) (let ((.cse4 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_8|) .cse5))) (and (exists ((v_DerPreprocessor_1 (Array Int Int))) (let ((.cse3 (select |c_#memory_$Pointer$#2.base| .cse4))) (= .cse3 (select (store (store |c_#memory_$Pointer$#2.base| .cse4 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_8| (store .cse3 .cse5 .cse4)) .cse4)))) (<= |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_8| .cse4))))) (<= 2 |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_8|))) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_8| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_8| Int)) (= |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_8| (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_8|) (+ |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_8| 24)))) (<= 2 |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_8|)))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_4| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_4| Int)) (= (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_4|) (+ |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_4| 24)) |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_4|)) (<= 2 |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_4|))) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_4| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_4|) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_4| Int)) (let ((.cse8 (+ |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_4| 24))) (let ((.cse6 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_4|) .cse8))) (and (exists ((v_DerPreprocessor_1 (Array Int Int))) (let ((.cse7 (select |c_#memory_$Pointer$#2.base| .cse6))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse6 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_4| (store .cse7 .cse8 .cse6)) .cse6) .cse7))) (<= |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_4| .cse6))))))))) is different from true [2024-11-28 02:08:41,857 WARN L873 $PredicateComparison]: unable to prove that (and (or (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_7| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_7|) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_7| Int)) (let ((.cse2 (+ |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_7| 24))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_7|) .cse2))) (and (<= |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_7| .cse0) (exists ((v_DerPreprocessor_1 (Array Int Int))) (let ((.cse1 (select |c_#memory_$Pointer$#2.base| .cse0))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse0 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_7| (store .cse1 .cse2 .cse0)) .cse0) .cse1))))))))) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_7| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_7|) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_7| Int)) (= |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_7| (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_7|) (+ |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_7| 24))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_5| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_5| Int)) (= (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_5|) (+ |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_5| 24)) |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_5|)) (<= 2 |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_5|))) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_5| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_5|) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_5| Int)) (let ((.cse5 (+ |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_5| 24))) (let ((.cse3 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_5|) .cse5))) (and (<= |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_5| .cse3) (exists ((v_DerPreprocessor_1 (Array Int Int))) (let ((.cse4 (select |c_#memory_$Pointer$#2.base| .cse3))) (= .cse4 (select (store (store |c_#memory_$Pointer$#2.base| .cse3 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_5| (store .cse4 .cse5 .cse3)) .cse3))))))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_8| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_8| Int)) (let ((.cse8 (+ |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_8| 24))) (let ((.cse7 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_8|) .cse8))) (and (exists ((v_DerPreprocessor_1 (Array Int Int))) (let ((.cse6 (select |c_#memory_$Pointer$#2.base| .cse7))) (= .cse6 (select (store (store |c_#memory_$Pointer$#2.base| .cse7 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_8| (store .cse6 .cse8 .cse7)) .cse7)))) (<= |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_8| .cse7))))) (<= 2 |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_8|))) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_8| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_8| Int)) (= |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_8| (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_8|) (+ |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_8| 24)))) (<= 2 |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_8|)))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_4| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_4| Int)) (= (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_4|) (+ |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_4| 24)) |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_4|)) (<= 2 |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_4|))) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_4| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_4|) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_4| Int)) (let ((.cse11 (+ |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_4| 24))) (let ((.cse9 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_4|) .cse11))) (and (exists ((v_DerPreprocessor_1 (Array Int Int))) (let ((.cse10 (select |c_#memory_$Pointer$#2.base| .cse9))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse9 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_4| (store .cse10 .cse11 .cse9)) .cse9) .cse10))) (<= |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_4| .cse9))))))))) is different from true [2024-11-28 02:08:51,047 WARN L873 $PredicateComparison]: unable to prove that (and (or (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_7| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_7|) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_7| Int)) (let ((.cse2 (+ |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_7| 24))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_7|) .cse2))) (and (<= |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_7| .cse0) (exists ((v_DerPreprocessor_1 (Array Int Int))) (let ((.cse1 (select |c_#memory_$Pointer$#2.base| .cse0))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse0 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_7| (store .cse1 .cse2 .cse0)) .cse0) .cse1))))))))) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_7| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_7|) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_7| Int)) (= |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_7| (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_7|) (+ |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_7| 24))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_5| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_5| Int)) (= (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_5|) (+ |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_5| 24)) |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_5|)) (<= 2 |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_5|))) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_5| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_5|) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_5| Int)) (let ((.cse5 (+ |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_5| 24))) (let ((.cse3 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_5|) .cse5))) (and (<= |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_5| .cse3) (exists ((v_DerPreprocessor_1 (Array Int Int))) (let ((.cse4 (select |c_#memory_$Pointer$#2.base| .cse3))) (= .cse4 (select (store (store |c_#memory_$Pointer$#2.base| .cse3 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_5| (store .cse4 .cse5 .cse3)) .cse3))))))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_8| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_8| Int)) (let ((.cse8 (+ |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_8| 24))) (let ((.cse7 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_8|) .cse8))) (and (exists ((v_DerPreprocessor_1 (Array Int Int))) (let ((.cse6 (select |c_#memory_$Pointer$#2.base| .cse7))) (= .cse6 (select (store (store |c_#memory_$Pointer$#2.base| .cse7 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_8| (store .cse6 .cse8 .cse7)) .cse7)))) (<= |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_8| .cse7))))) (<= 2 |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_8|))) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_8| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_8| Int)) (= |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_8| (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_8|) (+ |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_8| 24)))) (<= 2 |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_8|)))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_6| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_6|) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_6| Int)) (let ((.cse11 (+ |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_6| 24))) (let ((.cse9 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_6|) .cse11))) (and (<= |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_6| .cse9) (exists ((v_DerPreprocessor_1 (Array Int Int))) (let ((.cse10 (select |c_#memory_$Pointer$#2.base| .cse9))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse9 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_6| (store .cse10 .cse11 .cse9)) .cse9) .cse10))))))))) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_6| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_6| Int)) (= (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_6|) (+ |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_6| 24)) |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_6|)) (<= 2 |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_6|)))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_4| Int)) (and (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_4| Int)) (= (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_4|) (+ |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_4| 24)) |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_4|)) (<= 2 |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_4|))) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_4| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_4|) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_4| Int)) (let ((.cse14 (+ |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_4| 24))) (let ((.cse12 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_4|) .cse14))) (and (exists ((v_DerPreprocessor_1 (Array Int Int))) (let ((.cse13 (select |c_#memory_$Pointer$#2.base| .cse12))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse12 v_DerPreprocessor_1) |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_4| (store .cse13 .cse14 .cse12)) .cse12) .cse13))) (<= |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_4| .cse12))))))))) is different from true [2024-11-28 02:08:54,407 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 37 not checked. [2024-11-28 02:08:54,408 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:08:55,106 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:08:55,106 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 238 treesize of output 232 [2024-11-28 02:08:55,117 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 02:08:55,190 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 02:09:01,364 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 02:09:01,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55967658] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 02:09:01,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:09:01,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [6, 20] total 33 [2024-11-28 02:09:01,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146905981] [2024-11-28 02:09:01,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:01,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:09:01,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:01,367 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:09:01,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=643, Unknown=37, NotChecked=280, Total=1056 [2024-11-28 02:09:01,368 INFO L87 Difference]: Start difference. First operand 117 states and 155 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 02:09:04,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:04,490 INFO L93 Difference]: Finished difference Result 197 states and 277 transitions. [2024-11-28 02:09:04,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 02:09:04,491 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 68 [2024-11-28 02:09:04,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:04,493 INFO L225 Difference]: With dead ends: 197 [2024-11-28 02:09:04,494 INFO L226 Difference]: Without dead ends: 136 [2024-11-28 02:09:04,496 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 53.0s TimeCoverageRelationStatistics Valid=142, Invalid=1100, Unknown=38, NotChecked=360, Total=1640 [2024-11-28 02:09:04,497 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 156 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:04,497 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 421 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 02:09:04,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-28 02:09:04,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 119. [2024-11-28 02:09:04,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 85 states have (on average 1.3058823529411765) internal successors, (111), 87 states have internal predecessors, (111), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-28 02:09:04,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 157 transitions. [2024-11-28 02:09:04,531 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 157 transitions. Word has length 68 [2024-11-28 02:09:04,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:04,532 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 157 transitions. [2024-11-28 02:09:04,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 02:09:04,532 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 157 transitions. [2024-11-28 02:09:04,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-28 02:09:04,535 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:04,535 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 02:09:04,549 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:09:04,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:04,740 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:04,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:04,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1561950370, now seen corresponding path program 1 times [2024-11-28 02:09:04,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:04,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690524391] [2024-11-28 02:09:04,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:04,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:04,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:05,305 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 02:09:05,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:05,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690524391] [2024-11-28 02:09:05,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690524391] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:09:05,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237566362] [2024-11-28 02:09:05,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:05,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:05,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:09:05,309 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:09:05,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:09:05,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:05,550 INFO L256 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-28 02:09:05,556 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:09:05,622 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 02:09:05,631 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 02:09:05,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:09:05,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:09:05,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:09:05,735 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 02:09:05,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:09:05,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:09:05,758 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 02:09:08,050 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 02:09:08,050 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:09:08,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237566362] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:08,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:09:08,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2024-11-28 02:09:08,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853788755] [2024-11-28 02:09:08,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:08,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:09:08,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:08,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:09:08,053 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:09:08,053 INFO L87 Difference]: Start difference. First operand 119 states and 157 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 02:09:09,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:09,604 INFO L93 Difference]: Finished difference Result 194 states and 264 transitions. [2024-11-28 02:09:09,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 02:09:09,607 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 68 [2024-11-28 02:09:09,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:09,611 INFO L225 Difference]: With dead ends: 194 [2024-11-28 02:09:09,611 INFO L226 Difference]: Without dead ends: 126 [2024-11-28 02:09:09,614 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 52 SyntacticMatches, 8 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2024-11-28 02:09:09,615 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 67 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:09,616 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 595 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 02:09:09,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-28 02:09:09,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 121. [2024-11-28 02:09:09,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 87 states have (on average 1.2988505747126438) internal successors, (113), 89 states have internal predecessors, (113), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-28 02:09:09,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 159 transitions. [2024-11-28 02:09:09,645 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 159 transitions. Word has length 68 [2024-11-28 02:09:09,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:09,645 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 159 transitions. [2024-11-28 02:09:09,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 02:09:09,646 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 159 transitions. [2024-11-28 02:09:09,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-28 02:09:09,648 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:09,648 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 02:09:09,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 02:09:09,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:09,849 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:09,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:09,850 INFO L85 PathProgramCache]: Analyzing trace with hash -513057188, now seen corresponding path program 1 times [2024-11-28 02:09:09,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:09,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684699067] [2024-11-28 02:09:09,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:09,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:09,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:10,772 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 02:09:10,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:10,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684699067] [2024-11-28 02:09:10,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684699067] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:09:10,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392389125] [2024-11-28 02:09:10,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:10,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:10,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:09:10,777 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:09:10,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:09:10,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:10,995 INFO L256 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-28 02:09:10,999 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:09:11,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-28 02:09:12,882 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 02:09:12,882 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:09:12,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392389125] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:12,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:09:12,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [9] total 19 [2024-11-28 02:09:12,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303583056] [2024-11-28 02:09:12,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:12,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 02:09:12,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:12,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 02:09:12,885 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2024-11-28 02:09:12,886 INFO L87 Difference]: Start difference. First operand 121 states and 159 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 02:09:16,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:09:20,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:09:25,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:09:29,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:09:33,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:09:34,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:34,130 INFO L93 Difference]: Finished difference Result 202 states and 273 transitions. [2024-11-28 02:09:34,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 02:09:34,131 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 68 [2024-11-28 02:09:34,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:34,133 INFO L225 Difference]: With dead ends: 202 [2024-11-28 02:09:34,133 INFO L226 Difference]: Without dead ends: 128 [2024-11-28 02:09:34,134 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 52 SyntacticMatches, 8 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=131, Invalid=681, Unknown=0, NotChecked=0, Total=812 [2024-11-28 02:09:34,135 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 238 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 64 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:34,135 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 391 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 272 Invalid, 5 Unknown, 0 Unchecked, 20.9s Time] [2024-11-28 02:09:34,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-28 02:09:34,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 123. [2024-11-28 02:09:34,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 89 states have (on average 1.2921348314606742) internal successors, (115), 91 states have internal predecessors, (115), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-28 02:09:34,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 161 transitions. [2024-11-28 02:09:34,161 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 161 transitions. Word has length 68 [2024-11-28 02:09:34,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:34,162 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 161 transitions. [2024-11-28 02:09:34,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 02:09:34,162 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 161 transitions. [2024-11-28 02:09:34,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-28 02:09:34,164 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:34,165 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 02:09:34,181 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 02:09:34,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:34,369 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:34,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:34,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1730495082, now seen corresponding path program 1 times [2024-11-28 02:09:34,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:34,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891725992] [2024-11-28 02:09:34,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:34,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:34,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:34,575 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 02:09:34,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:34,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891725992] [2024-11-28 02:09:34,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891725992] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:09:34,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657990952] [2024-11-28 02:09:34,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:34,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:34,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:09:34,578 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:09:34,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:09:34,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:34,790 INFO L256 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 02:09:34,792 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:09:34,899 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 02:09:34,900 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:09:34,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657990952] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:34,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:09:34,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-28 02:09:34,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033880582] [2024-11-28 02:09:34,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:34,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:09:34,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:34,904 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:09:34,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:09:34,904 INFO L87 Difference]: Start difference. First operand 123 states and 161 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 02:09:35,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:35,108 INFO L93 Difference]: Finished difference Result 258 states and 349 transitions. [2024-11-28 02:09:35,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:09:35,109 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2024-11-28 02:09:35,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:35,111 INFO L225 Difference]: With dead ends: 258 [2024-11-28 02:09:35,111 INFO L226 Difference]: Without dead ends: 153 [2024-11-28 02:09:35,112 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:09:35,112 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 111 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:35,113 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 217 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:09:35,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-11-28 02:09:35,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2024-11-28 02:09:35,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 115 states have (on average 1.3304347826086957) internal successors, (153), 119 states have internal predecessors, (153), 26 states have call successors, (26), 9 states have call predecessors, (26), 11 states have return successors, (28), 24 states have call predecessors, (28), 24 states have call successors, (28) [2024-11-28 02:09:35,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 207 transitions. [2024-11-28 02:09:35,146 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 207 transitions. Word has length 68 [2024-11-28 02:09:35,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:35,148 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 207 transitions. [2024-11-28 02:09:35,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 02:09:35,149 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 207 transitions. [2024-11-28 02:09:35,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-28 02:09:35,152 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:35,152 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:09:35,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 02:09:35,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-28 02:09:35,357 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:35,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:35,358 INFO L85 PathProgramCache]: Analyzing trace with hash -46341782, now seen corresponding path program 1 times [2024-11-28 02:09:35,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:35,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700117412] [2024-11-28 02:09:35,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:35,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:35,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:35,823 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 02:09:35,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:35,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700117412] [2024-11-28 02:09:35,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700117412] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:09:35,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029296233] [2024-11-28 02:09:35,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:35,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:35,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:09:35,827 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:09:35,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:09:36,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:36,099 INFO L256 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-28 02:09:36,105 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:09:36,178 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 02:09:36,201 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 02:09:36,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:09:36,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:09:36,326 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 02:09:36,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:09:36,336 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 02:09:36,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:09:36,355 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2024-11-28 02:09:36,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:09:36,363 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 02:09:36,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:09:36,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:09:36,454 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 02:09:36,459 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 02:09:36,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:09:36,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:09:36,480 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 02:09:36,489 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 02:09:37,755 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:09:37,756 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:09:38,232 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 24)) (.cse2 (+ 16 |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset|))) (and (forall ((|ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| Int) (v_ArrVal_517 (Array Int Int))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_517))) (store .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 |ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset|))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) .cse2) 0)) (forall ((v_ArrVal_519 (Array Int Int))) (= (select (select (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_519))) (store .cse3 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse3 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) .cse2) 0)))) is different from false [2024-11-28 02:09:38,289 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 24)) (.cse2 (+ 16 |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset|))) (and (forall ((|v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_17| Int)) (or (< |c_#StackHeapBarrier| (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_17| 1)) (forall ((v_ArrVal_519 (Array Int Int)) (v_ArrVal_515 Int)) (= (select (select (let ((.cse0 (store (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_515)) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_17| v_ArrVal_519))) (store .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_17|))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) .cse2) 0)))) (forall ((|v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_17| Int)) (or (< |c_#StackHeapBarrier| (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_17| 1)) (forall ((v_ArrVal_511 Int) (v_ArrVal_517 (Array Int Int)) (v_subst_1 Int)) (= (select (select (let ((.cse3 (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store (select |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_511)) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_17| v_ArrVal_517))) (store .cse3 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse3 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_subst_1))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) .cse2) 0)))))) is different from false [2024-11-28 02:09:38,338 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:09:38,340 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:09:38,466 INFO L349 Elim1Store]: treesize reduction 86, result has 45.2 percent of original size [2024-11-28 02:09:38,466 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 02:09:38,490 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:09:38,493 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:09:38,600 INFO L349 Elim1Store]: treesize reduction 86, result has 45.2 percent of original size [2024-11-28 02:09:38,601 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 02:09:38,630 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:09:38,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 260 treesize of output 258 [2024-11-28 02:09:38,643 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 02:09:38,679 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:09:38,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 296 treesize of output 296 [2024-11-28 02:09:38,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 263 treesize of output 251 [2024-11-28 02:09:38,736 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 02:09:39,593 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:09:39,594 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 114 treesize of output 112 [2024-11-28 02:09:39,720 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:09:39,721 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 71 treesize of output 63 [2024-11-28 02:09:39,826 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 25 trivial. 1 not checked. [2024-11-28 02:09:39,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029296233] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:09:39,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:09:39,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11, 10] total 23 [2024-11-28 02:09:39,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695153576] [2024-11-28 02:09:39,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:09:39,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 02:09:39,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:39,829 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 02:09:39,829 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=364, Unknown=2, NotChecked=78, Total=506 [2024-11-28 02:09:39,830 INFO L87 Difference]: Start difference. First operand 153 states and 207 transitions. Second operand has 23 states, 20 states have (on average 4.9) internal successors, (98), 22 states have internal predecessors, (98), 9 states have call successors, (20), 3 states have call predecessors, (20), 7 states have return successors, (19), 7 states have call predecessors, (19), 9 states have call successors, (19) [2024-11-28 02:09:42,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:42,161 INFO L93 Difference]: Finished difference Result 239 states and 329 transitions. [2024-11-28 02:09:42,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 02:09:42,162 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 4.9) internal successors, (98), 22 states have internal predecessors, (98), 9 states have call successors, (20), 3 states have call predecessors, (20), 7 states have return successors, (19), 7 states have call predecessors, (19), 9 states have call successors, (19) Word has length 70 [2024-11-28 02:09:42,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:42,164 INFO L225 Difference]: With dead ends: 239 [2024-11-28 02:09:42,164 INFO L226 Difference]: Without dead ends: 168 [2024-11-28 02:09:42,165 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 120 SyntacticMatches, 5 SemanticMatches, 32 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=131, Invalid=867, Unknown=2, NotChecked=122, Total=1122 [2024-11-28 02:09:42,166 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 69 mSDsluCounter, 1268 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 1379 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 277 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:42,167 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 1379 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 845 Invalid, 0 Unknown, 277 Unchecked, 1.6s Time] [2024-11-28 02:09:42,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-28 02:09:42,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 161. [2024-11-28 02:09:42,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 121 states have (on average 1.3140495867768596) internal successors, (159), 126 states have internal predecessors, (159), 26 states have call successors, (26), 10 states have call predecessors, (26), 13 states have return successors, (31), 24 states have call predecessors, (31), 24 states have call successors, (31) [2024-11-28 02:09:42,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 216 transitions. [2024-11-28 02:09:42,207 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 216 transitions. Word has length 70 [2024-11-28 02:09:42,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:42,207 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 216 transitions. [2024-11-28 02:09:42,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 4.9) internal successors, (98), 22 states have internal predecessors, (98), 9 states have call successors, (20), 3 states have call predecessors, (20), 7 states have return successors, (19), 7 states have call predecessors, (19), 9 states have call successors, (19) [2024-11-28 02:09:42,208 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 216 transitions. [2024-11-28 02:09:42,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-28 02:09:42,210 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:42,211 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:09:42,224 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 02:09:42,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 02:09:42,412 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:42,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:42,412 INFO L85 PathProgramCache]: Analyzing trace with hash -2039781894, now seen corresponding path program 1 times [2024-11-28 02:09:42,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:42,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927529236] [2024-11-28 02:09:42,413 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:42,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:42,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:42,615 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 02:09:42,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:42,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927529236] [2024-11-28 02:09:42,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927529236] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:09:42,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582142902] [2024-11-28 02:09:42,616 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:42,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:42,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:09:42,618 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:09:42,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 02:09:42,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:42,869 INFO L256 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 02:09:42,872 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:09:42,990 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 02:09:42,991 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:09:42,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582142902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:42,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:09:42,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-11-28 02:09:42,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390802352] [2024-11-28 02:09:42,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:42,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:09:42,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:42,995 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:09:42,995 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:09:42,995 INFO L87 Difference]: Start difference. First operand 161 states and 216 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 02:09:43,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:43,364 INFO L93 Difference]: Finished difference Result 324 states and 440 transitions. [2024-11-28 02:09:43,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:09:43,365 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2024-11-28 02:09:43,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:43,368 INFO L225 Difference]: With dead ends: 324 [2024-11-28 02:09:43,369 INFO L226 Difference]: Without dead ends: 185 [2024-11-28 02:09:43,371 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:09:43,371 INFO L435 NwaCegarLoop]: 60 mSDtfsCounter, 95 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:43,372 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 258 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:09:43,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-11-28 02:09:43,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 161. [2024-11-28 02:09:43,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 121 states have (on average 1.3140495867768596) internal successors, (159), 126 states have internal predecessors, (159), 26 states have call successors, (26), 10 states have call predecessors, (26), 13 states have return successors, (31), 24 states have call predecessors, (31), 24 states have call successors, (31) [2024-11-28 02:09:43,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 216 transitions. [2024-11-28 02:09:43,420 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 216 transitions. Word has length 70 [2024-11-28 02:09:43,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:43,421 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 216 transitions. [2024-11-28 02:09:43,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 02:09:43,421 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 216 transitions. [2024-11-28 02:09:43,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-28 02:09:43,423 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:43,423 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:09:43,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 02:09:43,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:43,624 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:43,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:43,625 INFO L85 PathProgramCache]: Analyzing trace with hash 733534024, now seen corresponding path program 1 times [2024-11-28 02:09:43,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:43,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393213831] [2024-11-28 02:09:43,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:43,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:43,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:43,838 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 02:09:43,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:43,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393213831] [2024-11-28 02:09:43,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393213831] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:09:43,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135618880] [2024-11-28 02:09:43,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:43,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:43,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:09:43,841 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:09:43,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 02:09:44,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:44,101 INFO L256 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:09:44,103 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:09:44,252 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 02:09:44,253 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:09:44,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135618880] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:44,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:09:44,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-28 02:09:44,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793451911] [2024-11-28 02:09:44,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:44,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:09:44,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:44,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:09:44,254 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:09:44,255 INFO L87 Difference]: Start difference. First operand 161 states and 216 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 02:09:44,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:44,672 INFO L93 Difference]: Finished difference Result 350 states and 482 transitions. [2024-11-28 02:09:44,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:09:44,673 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2024-11-28 02:09:44,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:44,676 INFO L225 Difference]: With dead ends: 350 [2024-11-28 02:09:44,676 INFO L226 Difference]: Without dead ends: 211 [2024-11-28 02:09:44,680 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2024-11-28 02:09:44,682 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 110 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:44,683 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 302 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:09:44,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-11-28 02:09:44,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 163. [2024-11-28 02:09:44,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 123 states have (on average 1.3252032520325203) internal successors, (163), 128 states have internal predecessors, (163), 26 states have call successors, (26), 10 states have call predecessors, (26), 13 states have return successors, (31), 24 states have call predecessors, (31), 24 states have call successors, (31) [2024-11-28 02:09:44,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 220 transitions. [2024-11-28 02:09:44,729 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 220 transitions. Word has length 72 [2024-11-28 02:09:44,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:44,730 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 220 transitions. [2024-11-28 02:09:44,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 02:09:44,730 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 220 transitions. [2024-11-28 02:09:44,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-28 02:09:44,732 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:44,732 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:09:44,745 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 02:09:44,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:44,936 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:44,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:44,937 INFO L85 PathProgramCache]: Analyzing trace with hash -281593581, now seen corresponding path program 1 times [2024-11-28 02:09:44,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:44,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639940537] [2024-11-28 02:09:44,937 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:44,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:45,235 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 02:09:45,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:45,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639940537] [2024-11-28 02:09:45,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639940537] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:09:45,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218798674] [2024-11-28 02:09:45,236 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:45,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:45,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:09:45,239 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:09:45,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 02:09:45,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:45,500 INFO L256 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:09:45,502 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:09:45,527 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 02:09:45,529 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:09:45,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218798674] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:45,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:09:45,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-28 02:09:45,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936720669] [2024-11-28 02:09:45,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:45,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:09:45,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:45,533 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:09:45,534 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:09:45,535 INFO L87 Difference]: Start difference. First operand 163 states and 220 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 02:09:45,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:45,599 INFO L93 Difference]: Finished difference Result 322 states and 458 transitions. [2024-11-28 02:09:45,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:09:45,600 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 02:09:45,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:45,603 INFO L225 Difference]: With dead ends: 322 [2024-11-28 02:09:45,603 INFO L226 Difference]: Without dead ends: 181 [2024-11-28 02:09:45,604 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:09:45,605 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 2 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:45,606 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 154 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:09:45,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-28 02:09:45,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 169. [2024-11-28 02:09:45,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 129 states have (on average 1.3255813953488371) internal successors, (171), 134 states have internal predecessors, (171), 26 states have call successors, (26), 10 states have call predecessors, (26), 13 states have return successors, (31), 24 states have call predecessors, (31), 24 states have call successors, (31) [2024-11-28 02:09:45,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 228 transitions. [2024-11-28 02:09:45,642 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 228 transitions. Word has length 73 [2024-11-28 02:09:45,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:45,642 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 228 transitions. [2024-11-28 02:09:45,643 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 02:09:45,643 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 228 transitions. [2024-11-28 02:09:45,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-28 02:09:45,645 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:45,645 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:09:45,662 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 02:09:45,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 02:09:45,846 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:45,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:45,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1966799637, now seen corresponding path program 1 times [2024-11-28 02:09:45,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:45,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372126104] [2024-11-28 02:09:45,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:45,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:45,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:46,123 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 02:09:46,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:46,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372126104] [2024-11-28 02:09:46,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372126104] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:09:46,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654778237] [2024-11-28 02:09:46,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:46,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:46,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:09:46,127 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:09:46,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 02:09:46,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:46,408 INFO L256 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:09:46,412 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:09:46,546 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 02:09:46,547 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:09:46,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654778237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:46,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:09:46,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-11-28 02:09:46,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628841786] [2024-11-28 02:09:46,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:46,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:09:46,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:46,551 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:09:46,551 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:09:46,551 INFO L87 Difference]: Start difference. First operand 169 states and 228 transitions. Second operand has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-28 02:09:46,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:46,784 INFO L93 Difference]: Finished difference Result 318 states and 427 transitions. [2024-11-28 02:09:46,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:09:46,785 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 81 [2024-11-28 02:09:46,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:46,787 INFO L225 Difference]: With dead ends: 318 [2024-11-28 02:09:46,788 INFO L226 Difference]: Without dead ends: 135 [2024-11-28 02:09:46,789 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:09:46,790 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 116 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:46,790 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 283 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:09:46,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-28 02:09:46,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2024-11-28 02:09:46,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 97 states have (on average 1.2268041237113403) internal successors, (119), 102 states have internal predecessors, (119), 24 states have call successors, (24), 10 states have call predecessors, (24), 13 states have return successors, (29), 22 states have call predecessors, (29), 22 states have call successors, (29) [2024-11-28 02:09:46,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 172 transitions. [2024-11-28 02:09:46,827 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 172 transitions. Word has length 81 [2024-11-28 02:09:46,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:46,828 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 172 transitions. [2024-11-28 02:09:46,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-28 02:09:46,829 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 172 transitions. [2024-11-28 02:09:46,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-28 02:09:46,830 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:46,830 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:09:46,843 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 02:09:47,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-28 02:09:47,031 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:47,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:47,031 INFO L85 PathProgramCache]: Analyzing trace with hash 193167077, now seen corresponding path program 1 times [2024-11-28 02:09:47,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:47,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376248196] [2024-11-28 02:09:47,032 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:47,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:47,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:47,661 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 02:09:47,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:47,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376248196] [2024-11-28 02:09:47,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376248196] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:09:47,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169001047] [2024-11-28 02:09:47,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:47,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:47,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:09:47,666 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:09:47,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 02:09:47,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:47,996 INFO L256 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-28 02:09:48,011 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:09:48,266 INFO L349 Elim1Store]: treesize reduction 66, result has 39.4 percent of original size [2024-11-28 02:09:48,266 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 02:09:48,275 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 02:09:48,302 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:09:48,303 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 02:09:48,361 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:09:48,362 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 02:09:48,366 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 02:09:48,383 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset| 24))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) .cse2))) (and (not (= 0 .cse0)) (or (= |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base| .cse0) (exists ((v_DerPreprocessor_3 (Array Int Int))) (let ((.cse1 (select |c_#memory_$Pointer$#2.base| .cse0))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse0 v_DerPreprocessor_3) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base| (store .cse1 .cse2 .cse0)) .cse0) .cse1))))))) is different from true [2024-11-28 02:09:48,423 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_31| Int) (|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44| Int)) (let ((.cse2 (+ |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_31| 24))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44|) .cse2))) (and (exists ((v_DerPreprocessor_3 (Array Int Int))) (let ((.cse1 (select |c_#memory_$Pointer$#2.base| .cse0))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse0 v_DerPreprocessor_3) |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44| (store .cse1 .cse2 .cse0)) .cse0) .cse1))) (not (= .cse0 0)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_31| Int) (|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44| Int)) (let ((.cse3 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44|) (+ |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_31| 24)))) (and (= |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44| .cse3) (not (= .cse3 0)))))) is different from true [2024-11-28 02:09:48,897 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset| 24))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) .cse2))) (and (not (= 0 .cse0)) (or (= |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base| .cse0) (exists ((v_DerPreprocessor_3 (Array Int Int))) (let ((.cse1 (select |c_#memory_$Pointer$#2.base| .cse0))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse0 v_DerPreprocessor_3) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base| (store .cse1 .cse2 .cse0)) .cse0) .cse1)))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_31| Int) (|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44| Int)) (let ((.cse5 (+ |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_31| 24))) (let ((.cse3 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44|) .cse5))) (and (exists ((v_DerPreprocessor_3 (Array Int Int))) (let ((.cse4 (select |c_#memory_$Pointer$#2.base| .cse3))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse3 v_DerPreprocessor_3) |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44| (store .cse4 .cse5 .cse3)) .cse3) .cse4))) (not (= .cse3 0)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_31| Int) (|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44| Int)) (let ((.cse6 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44|) (+ |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_31| 24)))) (and (= |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44| .cse6) (not (= .cse6 0))))))))) is different from true [2024-11-28 02:09:48,944 WARN L873 $PredicateComparison]: unable to prove that (and (or (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_32| Int) (|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_45| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_45|) (+ |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_32| 24)))) (and (not (= .cse0 0)) (= |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_45| .cse0)))) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_32| Int) (|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_45| Int)) (let ((.cse3 (+ |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_32| 24))) (let ((.cse2 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_45|) .cse3))) (and (exists ((v_DerPreprocessor_3 (Array Int Int))) (let ((.cse1 (select |c_#memory_$Pointer$#2.base| .cse2))) (= .cse1 (select (store (store |c_#memory_$Pointer$#2.base| .cse2 v_DerPreprocessor_3) |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_45| (store .cse1 .cse3 .cse2)) .cse2)))) (not (= .cse2 0))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_31| Int) (|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44| Int)) (let ((.cse6 (+ |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_31| 24))) (let ((.cse4 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44|) .cse6))) (and (exists ((v_DerPreprocessor_3 (Array Int Int))) (let ((.cse5 (select |c_#memory_$Pointer$#2.base| .cse4))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse4 v_DerPreprocessor_3) |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44| (store .cse5 .cse6 .cse4)) .cse4) .cse5))) (not (= .cse4 0)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_31| Int) (|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44| Int)) (let ((.cse7 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44|) (+ |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_31| 24)))) (and (= |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44| .cse7) (not (= .cse7 0))))))) is different from true [2024-11-28 02:09:49,130 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse6 (+ |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset| 24))) (let ((.cse4 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) .cse6))) (and (or (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_32| Int) (|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_45| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_45|) (+ |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_32| 24)))) (and (not (= .cse0 0)) (= |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_45| .cse0)))) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_32| Int) (|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_45| Int)) (let ((.cse3 (+ |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_32| 24))) (let ((.cse2 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_45|) .cse3))) (and (exists ((v_DerPreprocessor_3 (Array Int Int))) (let ((.cse1 (select |c_#memory_$Pointer$#2.base| .cse2))) (= .cse1 (select (store (store |c_#memory_$Pointer$#2.base| .cse2 v_DerPreprocessor_3) |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_45| (store .cse1 .cse3 .cse2)) .cse2)))) (not (= .cse2 0))))))) (not (= 0 .cse4)) (or (= |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base| .cse4) (exists ((v_DerPreprocessor_3 (Array Int Int))) (let ((.cse5 (select |c_#memory_$Pointer$#2.base| .cse4))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse4 v_DerPreprocessor_3) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base| (store .cse5 .cse6 .cse4)) .cse4) .cse5)))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_31| Int) (|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44| Int)) (let ((.cse9 (+ |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_31| 24))) (let ((.cse7 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44|) .cse9))) (and (exists ((v_DerPreprocessor_3 (Array Int Int))) (let ((.cse8 (select |c_#memory_$Pointer$#2.base| .cse7))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse7 v_DerPreprocessor_3) |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44| (store .cse8 .cse9 .cse7)) .cse7) .cse8))) (not (= .cse7 0)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_31| Int) (|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44| Int)) (let ((.cse10 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44|) (+ |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_31| 24)))) (and (= |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44| .cse10) (not (= .cse10 0))))))))) is different from true [2024-11-28 02:09:49,391 WARN L873 $PredicateComparison]: unable to prove that (and (or (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_18| Int) (|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_19| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_19|) (+ |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_18| 24)))) (and (not (= .cse0 0)) (= .cse0 |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_19|)))) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_18| Int) (|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_19| Int)) (let ((.cse3 (+ |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_18| 24))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_19|) .cse3))) (and (not (= .cse1 0)) (exists ((v_DerPreprocessor_3 (Array Int Int))) (let ((.cse2 (select |c_#memory_$Pointer$#2.base| .cse1))) (= .cse2 (select (store (store |c_#memory_$Pointer$#2.base| .cse1 v_DerPreprocessor_3) |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_19| (store .cse2 .cse3 .cse1)) .cse1))))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_32| Int) (|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_45| Int)) (let ((.cse4 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_45|) (+ |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_32| 24)))) (and (not (= .cse4 0)) (= |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_45| .cse4)))) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_32| Int) (|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_45| Int)) (let ((.cse7 (+ |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_32| 24))) (let ((.cse6 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_45|) .cse7))) (and (exists ((v_DerPreprocessor_3 (Array Int Int))) (let ((.cse5 (select |c_#memory_$Pointer$#2.base| .cse6))) (= .cse5 (select (store (store |c_#memory_$Pointer$#2.base| .cse6 v_DerPreprocessor_3) |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_45| (store .cse5 .cse7 .cse6)) .cse6)))) (not (= .cse6 0))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_31| Int) (|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44| Int)) (let ((.cse10 (+ |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_31| 24))) (let ((.cse8 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44|) .cse10))) (and (exists ((v_DerPreprocessor_3 (Array Int Int))) (let ((.cse9 (select |c_#memory_$Pointer$#2.base| .cse8))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse8 v_DerPreprocessor_3) |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44| (store .cse9 .cse10 .cse8)) .cse8) .cse9))) (not (= .cse8 0)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_31| Int) (|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44| Int)) (let ((.cse11 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44|) (+ |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_31| 24)))) (and (= |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44| .cse11) (not (= .cse11 0))))))) is different from true [2024-11-28 02:09:50,005 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse10 (+ |c_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset| 24))) (let ((.cse8 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base|) .cse10))) (and (or (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_18| Int) (|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_19| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_19|) (+ |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_18| 24)))) (and (not (= .cse0 0)) (= .cse0 |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_19|)))) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_18| Int) (|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_19| Int)) (let ((.cse3 (+ |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_18| 24))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_19|) .cse3))) (and (not (= .cse1 0)) (exists ((v_DerPreprocessor_3 (Array Int Int))) (let ((.cse2 (select |c_#memory_$Pointer$#2.base| .cse1))) (= .cse2 (select (store (store |c_#memory_$Pointer$#2.base| .cse1 v_DerPreprocessor_3) |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_19| (store .cse2 .cse3 .cse1)) .cse1))))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_32| Int) (|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_45| Int)) (let ((.cse4 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_45|) (+ |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_32| 24)))) (and (not (= .cse4 0)) (= |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_45| .cse4)))) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_32| Int) (|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_45| Int)) (let ((.cse7 (+ |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_32| 24))) (let ((.cse6 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_45|) .cse7))) (and (exists ((v_DerPreprocessor_3 (Array Int Int))) (let ((.cse5 (select |c_#memory_$Pointer$#2.base| .cse6))) (= .cse5 (select (store (store |c_#memory_$Pointer$#2.base| .cse6 v_DerPreprocessor_3) |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_45| (store .cse5 .cse7 .cse6)) .cse6)))) (not (= .cse6 0))))))) (not (= .cse8 0)) (or (exists ((v_DerPreprocessor_3 (Array Int Int))) (let ((.cse9 (select |c_#memory_$Pointer$#2.base| .cse8))) (= .cse9 (select (store (store |c_#memory_$Pointer$#2.base| .cse8 v_DerPreprocessor_3) |c_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base| (store .cse9 .cse10 .cse8)) .cse8)))) (= .cse8 |c_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base|)) (or (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_31| Int) (|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44| Int)) (let ((.cse13 (+ |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_31| 24))) (let ((.cse11 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44|) .cse13))) (and (exists ((v_DerPreprocessor_3 (Array Int Int))) (let ((.cse12 (select |c_#memory_$Pointer$#2.base| .cse11))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse11 v_DerPreprocessor_3) |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44| (store .cse12 .cse13 .cse11)) .cse11) .cse12))) (not (= .cse11 0)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_31| Int) (|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44| Int)) (let ((.cse14 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44|) (+ |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_31| 24)))) (and (= |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44| .cse14) (not (= .cse14 0))))))))) is different from true [2024-11-28 02:09:50,090 WARN L873 $PredicateComparison]: unable to prove that (and (or (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_18| Int) (|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_19| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_19|) (+ |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_18| 24)))) (and (not (= .cse0 0)) (= .cse0 |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_19|)))) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_18| Int) (|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_19| Int)) (let ((.cse3 (+ |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_18| 24))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_19|) .cse3))) (and (not (= .cse1 0)) (exists ((v_DerPreprocessor_3 (Array Int Int))) (let ((.cse2 (select |c_#memory_$Pointer$#2.base| .cse1))) (= .cse2 (select (store (store |c_#memory_$Pointer$#2.base| .cse1 v_DerPreprocessor_3) |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_19| (store .cse2 .cse3 .cse1)) .cse1))))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_32| Int) (|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_45| Int)) (let ((.cse4 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_45|) (+ |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_32| 24)))) (and (not (= .cse4 0)) (= |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_45| .cse4)))) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_32| Int) (|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_45| Int)) (let ((.cse7 (+ |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_32| 24))) (let ((.cse6 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_45|) .cse7))) (and (exists ((v_DerPreprocessor_3 (Array Int Int))) (let ((.cse5 (select |c_#memory_$Pointer$#2.base| .cse6))) (= .cse5 (select (store (store |c_#memory_$Pointer$#2.base| .cse6 v_DerPreprocessor_3) |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_45| (store .cse5 .cse7 .cse6)) .cse6)))) (not (= .cse6 0))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_19| Int) (|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_20| Int)) (let ((.cse8 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_20|) (+ |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_19| 24)))) (and (not (= .cse8 0)) (= .cse8 |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_20|)))) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_19| Int) (|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_20| Int)) (let ((.cse11 (+ |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_19| 24))) (let ((.cse9 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_20|) .cse11))) (and (exists ((v_DerPreprocessor_3 (Array Int Int))) (let ((.cse10 (select |c_#memory_$Pointer$#2.base| .cse9))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse9 v_DerPreprocessor_3) |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_20| (store .cse10 .cse11 .cse9)) .cse9) .cse10))) (not (= .cse9 0))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_31| Int) (|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44| Int)) (let ((.cse14 (+ |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_31| 24))) (let ((.cse12 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44|) .cse14))) (and (exists ((v_DerPreprocessor_3 (Array Int Int))) (let ((.cse13 (select |c_#memory_$Pointer$#2.base| .cse12))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse12 v_DerPreprocessor_3) |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44| (store .cse13 .cse14 .cse12)) .cse12) .cse13))) (not (= .cse12 0)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_31| Int) (|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44| Int)) (let ((.cse15 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44|) (+ |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_31| 24)))) (and (= |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44| .cse15) (not (= .cse15 0))))))) is different from true [2024-11-28 02:09:50,412 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse10 (+ |c_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset| 24))) (let ((.cse8 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base|) .cse10))) (and (or (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_18| Int) (|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_19| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_19|) (+ |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_18| 24)))) (and (not (= .cse0 0)) (= .cse0 |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_19|)))) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_18| Int) (|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_19| Int)) (let ((.cse3 (+ |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_18| 24))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_19|) .cse3))) (and (not (= .cse1 0)) (exists ((v_DerPreprocessor_3 (Array Int Int))) (let ((.cse2 (select |c_#memory_$Pointer$#2.base| .cse1))) (= .cse2 (select (store (store |c_#memory_$Pointer$#2.base| .cse1 v_DerPreprocessor_3) |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_19| (store .cse2 .cse3 .cse1)) .cse1))))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_32| Int) (|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_45| Int)) (let ((.cse4 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_45|) (+ |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_32| 24)))) (and (not (= .cse4 0)) (= |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_45| .cse4)))) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_32| Int) (|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_45| Int)) (let ((.cse7 (+ |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_32| 24))) (let ((.cse6 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_45|) .cse7))) (and (exists ((v_DerPreprocessor_3 (Array Int Int))) (let ((.cse5 (select |c_#memory_$Pointer$#2.base| .cse6))) (= .cse5 (select (store (store |c_#memory_$Pointer$#2.base| .cse6 v_DerPreprocessor_3) |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_45| (store .cse5 .cse7 .cse6)) .cse6)))) (not (= .cse6 0))))))) (not (= .cse8 0)) (or (exists ((v_DerPreprocessor_3 (Array Int Int))) (let ((.cse9 (select |c_#memory_$Pointer$#2.base| .cse8))) (= .cse9 (select (store (store |c_#memory_$Pointer$#2.base| .cse8 v_DerPreprocessor_3) |c_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base| (store .cse9 .cse10 .cse8)) .cse8)))) (= .cse8 |c_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base|)) (or (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_19| Int) (|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_20| Int)) (let ((.cse11 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_20|) (+ |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_19| 24)))) (and (not (= .cse11 0)) (= .cse11 |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_20|)))) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_19| Int) (|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_20| Int)) (let ((.cse14 (+ |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_19| 24))) (let ((.cse12 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_20|) .cse14))) (and (exists ((v_DerPreprocessor_3 (Array Int Int))) (let ((.cse13 (select |c_#memory_$Pointer$#2.base| .cse12))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse12 v_DerPreprocessor_3) |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_20| (store .cse13 .cse14 .cse12)) .cse12) .cse13))) (not (= .cse12 0))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_31| Int) (|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44| Int)) (let ((.cse17 (+ |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_31| 24))) (let ((.cse15 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44|) .cse17))) (and (exists ((v_DerPreprocessor_3 (Array Int Int))) (let ((.cse16 (select |c_#memory_$Pointer$#2.base| .cse15))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse15 v_DerPreprocessor_3) |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44| (store .cse16 .cse17 .cse15)) .cse15) .cse16))) (not (= .cse15 0)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_31| Int) (|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44| Int)) (let ((.cse18 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44|) (+ |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_31| 24)))) (and (= |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44| .cse18) (not (= .cse18 0))))))))) is different from true [2024-11-28 02:09:50,617 WARN L873 $PredicateComparison]: unable to prove that (and (or (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_18| Int) (|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_19| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_19|) (+ |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_18| 24)))) (and (not (= .cse0 0)) (= .cse0 |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_19|)))) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_18| Int) (|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_19| Int)) (let ((.cse3 (+ |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_18| 24))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_19|) .cse3))) (and (not (= .cse1 0)) (exists ((v_DerPreprocessor_3 (Array Int Int))) (let ((.cse2 (select |c_#memory_$Pointer$#2.base| .cse1))) (= .cse2 (select (store (store |c_#memory_$Pointer$#2.base| .cse1 v_DerPreprocessor_3) |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_19| (store .cse2 .cse3 .cse1)) .cse1))))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_32| Int) (|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_45| Int)) (let ((.cse4 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_45|) (+ |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_32| 24)))) (and (not (= .cse4 0)) (= |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_45| .cse4)))) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_32| Int) (|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_45| Int)) (let ((.cse7 (+ |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_32| 24))) (let ((.cse6 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_45|) .cse7))) (and (exists ((v_DerPreprocessor_3 (Array Int Int))) (let ((.cse5 (select |c_#memory_$Pointer$#2.base| .cse6))) (= .cse5 (select (store (store |c_#memory_$Pointer$#2.base| .cse6 v_DerPreprocessor_3) |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_45| (store .cse5 .cse7 .cse6)) .cse6)))) (not (= .cse6 0))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_19| Int) (|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_20| Int)) (let ((.cse8 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_20|) (+ |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_19| 24)))) (and (not (= .cse8 0)) (= .cse8 |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_20|)))) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_19| Int) (|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_20| Int)) (let ((.cse11 (+ |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_19| 24))) (let ((.cse9 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_20|) .cse11))) (and (exists ((v_DerPreprocessor_3 (Array Int Int))) (let ((.cse10 (select |c_#memory_$Pointer$#2.base| .cse9))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse9 v_DerPreprocessor_3) |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_20| (store .cse10 .cse11 .cse9)) .cse9) .cse10))) (not (= .cse9 0))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_31| Int) (|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44| Int)) (let ((.cse14 (+ |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_31| 24))) (let ((.cse12 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44|) .cse14))) (and (exists ((v_DerPreprocessor_3 (Array Int Int))) (let ((.cse13 (select |c_#memory_$Pointer$#2.base| .cse12))) (= (select (store (store |c_#memory_$Pointer$#2.base| .cse12 v_DerPreprocessor_3) |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44| (store .cse13 .cse14 .cse12)) .cse12) .cse13))) (not (= .cse12 0)))))) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_31| Int) (|v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44| Int)) (let ((.cse15 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44|) (+ |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset_BEFORE_CALL_31| 24)))) (and (= |v_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base_BEFORE_CALL_44| .cse15) (not (= .cse15 0)))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_21| Int) (|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_20| Int)) (let ((.cse16 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_21|) (+ |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_20| 24)))) (and (= .cse16 |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_21|) (not (= .cse16 0))))) (exists ((|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_21| Int) (|v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_20| Int)) (let ((.cse19 (+ |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.offset_BEFORE_CALL_20| 24))) (let ((.cse18 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_21|) .cse19))) (and (exists ((v_DerPreprocessor_3 (Array Int Int))) (let ((.cse17 (select |c_#memory_$Pointer$#2.base| .cse18))) (= .cse17 (select (store (store |c_#memory_$Pointer$#2.base| .cse18 v_DerPreprocessor_3) |v_ULTIMATE.start_aws_linked_list_rbegin_~list#1.base_BEFORE_CALL_21| (store .cse17 .cse19 .cse18)) .cse18)))) (not (= .cse18 0)))))))) is different from true [2024-11-28 02:09:52,967 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 37 not checked. [2024-11-28 02:09:52,968 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:09:53,647 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:09:53,648 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 162 treesize of output 163 [2024-11-28 02:09:53,657 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 172 treesize of output 156 [2024-11-28 02:09:53,772 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 02:09:53,780 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 02:09:53,803 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-11-28 02:09:53,815 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 02:09:53,915 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 02:09:53,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169001047] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 02:09:53,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:09:53,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [7, 19] total 30 [2024-11-28 02:09:53,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449845978] [2024-11-28 02:09:53,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:53,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:09:53,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:53,917 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:09:53,918 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=310, Unknown=39, NotChecked=450, Total=870 [2024-11-28 02:09:53,918 INFO L87 Difference]: Start difference. First operand 135 states and 172 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-28 02:09:54,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:54,965 INFO L93 Difference]: Finished difference Result 215 states and 285 transitions. [2024-11-28 02:09:54,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:09:54,966 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 83 [2024-11-28 02:09:54,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:54,968 INFO L225 Difference]: With dead ends: 215 [2024-11-28 02:09:54,968 INFO L226 Difference]: Without dead ends: 138 [2024-11-28 02:09:54,970 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 142 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=87, Invalid=416, Unknown=43, NotChecked=510, Total=1056 [2024-11-28 02:09:54,970 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 62 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:54,971 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 442 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:09:54,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-28 02:09:54,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 137. [2024-11-28 02:09:54,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 99 states have (on average 1.2222222222222223) internal successors, (121), 104 states have internal predecessors, (121), 24 states have call successors, (24), 10 states have call predecessors, (24), 13 states have return successors, (29), 22 states have call predecessors, (29), 22 states have call successors, (29) [2024-11-28 02:09:55,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 174 transitions. [2024-11-28 02:09:55,000 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 174 transitions. Word has length 83 [2024-11-28 02:09:55,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:55,001 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 174 transitions. [2024-11-28 02:09:55,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-28 02:09:55,001 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 174 transitions. [2024-11-28 02:09:55,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-28 02:09:55,003 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:55,003 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 02:09:55,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-28 02:09:55,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-28 02:09:55,204 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:55,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:55,205 INFO L85 PathProgramCache]: Analyzing trace with hash -709333023, now seen corresponding path program 1 times [2024-11-28 02:09:55,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:55,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056018248] [2024-11-28 02:09:55,205 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:55,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:55,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:55,759 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 02:09:55,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:55,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056018248] [2024-11-28 02:09:55,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056018248] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:09:55,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805196678] [2024-11-28 02:09:55,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:55,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:55,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:09:55,764 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:09:55,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 02:09:56,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:56,105 INFO L256 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-28 02:09:56,111 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:09:56,188 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 02:09:56,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2024-11-28 02:09:56,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:09:56,348 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 02:09:56,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:09:56,357 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 02:09:56,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:09:56,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:09:56,372 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 02:09:56,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:09:56,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 20 [2024-11-28 02:09:56,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:09:56,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:09:56,481 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 02:09:56,489 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 02:09:56,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:09:56,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:09:56,513 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 02:09:56,522 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 02:09:58,409 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 02:09:58,409 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:09:58,884 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 24)) (.cse2 (+ 8 |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset|))) (and (forall ((|ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| Int) (v_ArrVal_990 (Array Int Int))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_990))) (store .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 |ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset|))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) .cse2) 0)) (forall ((v_ArrVal_991 (Array Int Int))) (= (select (select (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_991))) (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_rbegin_harness_~#list~0#1.base|) .cse2) 0)))) is different from false [2024-11-28 02:09:58,946 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 24)) (.cse2 (+ 8 |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.offset|))) (and (forall ((|v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_28| Int)) (or (< |c_#StackHeapBarrier| (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_28| 1)) (forall ((v_ArrVal_990 (Array Int Int)) (v_subst_2 Int) (v_ArrVal_986 Int)) (= (select (select (let ((.cse0 (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store (select |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_986)) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_28| v_ArrVal_990))) (store .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_subst_2))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) .cse2) 0)))) (forall ((|v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_28| Int)) (or (< |c_#StackHeapBarrier| (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_28| 1)) (forall ((v_ArrVal_991 (Array Int Int)) (v_ArrVal_985 Int)) (= (select (select (let ((.cse3 (store (store |c_#memory_$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_985)) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_28| v_ArrVal_991))) (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_28|))) |c_ULTIMATE.start_aws_linked_list_rbegin_harness_~#list~0#1.base|) .cse2) 0)))))) is different from false [2024-11-28 02:09:59,010 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:09:59,011 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:09:59,114 INFO L349 Elim1Store]: treesize reduction 88, result has 44.7 percent of original size [2024-11-28 02:09:59,114 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 171 treesize of output 200 [2024-11-28 02:09:59,126 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:09:59,127 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:09:59,232 INFO L349 Elim1Store]: treesize reduction 88, result has 44.7 percent of original size [2024-11-28 02:09:59,232 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 327 treesize of output 314 [2024-11-28 02:09:59,259 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:09:59,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 260 treesize of output 258 [2024-11-28 02:09:59,275 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 02:09:59,307 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:09:59,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 296 treesize of output 296 [2024-11-28 02:09:59,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 263 treesize of output 251 [2024-11-28 02:09:59,368 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 02:10:00,169 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:10:00,170 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 106 treesize of output 108 [2024-11-28 02:10:00,316 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:10:00,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 33 [2024-11-28 02:10:00,398 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 1 not checked. [2024-11-28 02:10:00,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805196678] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:10:00,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:10:00,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 11] total 26 [2024-11-28 02:10:00,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504436854] [2024-11-28 02:10:00,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:10:00,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 02:10:00,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:10:00,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 02:10:00,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=486, Unknown=2, NotChecked=90, Total=650 [2024-11-28 02:10:00,400 INFO L87 Difference]: Start difference. First operand 137 states and 174 transitions. Second operand has 26 states, 25 states have (on average 4.64) internal successors, (116), 25 states have internal predecessors, (116), 10 states have call successors, (24), 3 states have call predecessors, (24), 6 states have return successors, (23), 10 states have call predecessors, (23), 10 states have call successors, (23) [2024-11-28 02:10:03,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:10:03,123 INFO L93 Difference]: Finished difference Result 297 states and 394 transitions. [2024-11-28 02:10:03,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-28 02:10:03,124 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 4.64) internal successors, (116), 25 states have internal predecessors, (116), 10 states have call successors, (24), 3 states have call predecessors, (24), 6 states have return successors, (23), 10 states have call predecessors, (23), 10 states have call successors, (23) Word has length 83 [2024-11-28 02:10:03,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:10:03,126 INFO L225 Difference]: With dead ends: 297 [2024-11-28 02:10:03,126 INFO L226 Difference]: Without dead ends: 154 [2024-11-28 02:10:03,129 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 142 SyntacticMatches, 9 SemanticMatches, 43 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=217, Invalid=1595, Unknown=2, NotChecked=166, Total=1980 [2024-11-28 02:10:03,131 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 117 mSDsluCounter, 1178 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 1268 SdHoareTripleChecker+Invalid, 1264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 323 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:10:03,131 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 1268 Invalid, 1264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 891 Invalid, 0 Unknown, 323 Unchecked, 1.6s Time] [2024-11-28 02:10:03,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-11-28 02:10:03,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 143. [2024-11-28 02:10:03,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 104 states have (on average 1.2115384615384615) internal successors, (126), 110 states have internal predecessors, (126), 24 states have call successors, (24), 10 states have call predecessors, (24), 14 states have return successors, (32), 22 states have call predecessors, (32), 22 states have call successors, (32) [2024-11-28 02:10:03,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 182 transitions. [2024-11-28 02:10:03,176 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 182 transitions. Word has length 83 [2024-11-28 02:10:03,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:10:03,176 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 182 transitions. [2024-11-28 02:10:03,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 4.64) internal successors, (116), 25 states have internal predecessors, (116), 10 states have call successors, (24), 3 states have call predecessors, (24), 6 states have return successors, (23), 10 states have call predecessors, (23), 10 states have call successors, (23) [2024-11-28 02:10:03,177 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 182 transitions. [2024-11-28 02:10:03,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-28 02:10:03,178 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:10:03,178 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 02:10:03,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-28 02:10:03,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 02:10:03,379 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:10:03,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:10:03,380 INFO L85 PathProgramCache]: Analyzing trace with hash 424560491, now seen corresponding path program 1 times [2024-11-28 02:10:03,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:10:03,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239474714] [2024-11-28 02:10:03,380 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:10:03,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:10:03,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:10:03,979 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 02:10:03,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:10:03,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239474714] [2024-11-28 02:10:03,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239474714] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:10:03,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541648167] [2024-11-28 02:10:03,980 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:10:03,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:10:03,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:10:03,983 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:10:03,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 02:10:04,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:10:04,354 INFO L256 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-28 02:10:04,359 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:10:04,434 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 02:10:04,438 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 02:10:08,683 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((|v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_1| Int) (|v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_1| Int)) (not (= 0 (select (select |c_#memory_$Pointer$#2.offset| |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_1|) |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_1|)))) (exists ((|v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_1| Int) (|v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_1| Int)) (not (= (select (select |c_#memory_$Pointer$#2.base| |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_1|) |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_1|) 0)))) is different from true [2024-11-28 02:10:09,880 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 23 proven. 17 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 02:10:09,880 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:10:10,658 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 02:10:10,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541648167] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:10:10,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:10:10,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 16, 12] total 31 [2024-11-28 02:10:10,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043825059] [2024-11-28 02:10:10,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:10:10,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-28 02:10:10,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:10:10,661 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-28 02:10:10,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=776, Unknown=1, NotChecked=56, Total=930 [2024-11-28 02:10:10,664 INFO L87 Difference]: Start difference. First operand 143 states and 182 transitions. Second operand has 31 states, 31 states have (on average 3.967741935483871) internal successors, (123), 29 states have internal predecessors, (123), 10 states have call successors, (22), 4 states have call predecessors, (22), 7 states have return successors, (22), 9 states have call predecessors, (22), 10 states have call successors, (22) [2024-11-28 02:10:14,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:10:18,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:10:22,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:10:26,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:10:26,013 INFO L93 Difference]: Finished difference Result 477 states and 671 transitions. [2024-11-28 02:10:26,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-28 02:10:26,014 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.967741935483871) internal successors, (123), 29 states have internal predecessors, (123), 10 states have call successors, (22), 4 states have call predecessors, (22), 7 states have return successors, (22), 9 states have call predecessors, (22), 10 states have call successors, (22) Word has length 85 [2024-11-28 02:10:26,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:10:26,018 INFO L225 Difference]: With dead ends: 477 [2024-11-28 02:10:26,018 INFO L226 Difference]: Without dead ends: 346 [2024-11-28 02:10:26,020 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 145 SyntacticMatches, 8 SemanticMatches, 58 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=431, Invalid=2994, Unknown=1, NotChecked=114, Total=3540 [2024-11-28 02:10:26,021 INFO L435 NwaCegarLoop]: 101 mSDtfsCounter, 214 mSDsluCounter, 1224 mSDsCounter, 0 mSdLazyCounter, 1427 mSolverCounterSat, 63 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 2059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1427 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 566 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:10:26,022 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 1325 Invalid, 2059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1427 Invalid, 3 Unknown, 566 Unchecked, 13.9s Time] [2024-11-28 02:10:26,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2024-11-28 02:10:26,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 295. [2024-11-28 02:10:26,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 221 states have (on average 1.2171945701357465) internal successors, (269), 228 states have internal predecessors, (269), 49 states have call successors, (49), 19 states have call predecessors, (49), 24 states have return successors, (70), 47 states have call predecessors, (70), 46 states have call successors, (70) [2024-11-28 02:10:26,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 388 transitions. [2024-11-28 02:10:26,104 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 388 transitions. Word has length 85 [2024-11-28 02:10:26,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:10:26,104 INFO L471 AbstractCegarLoop]: Abstraction has 295 states and 388 transitions. [2024-11-28 02:10:26,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.967741935483871) internal successors, (123), 29 states have internal predecessors, (123), 10 states have call successors, (22), 4 states have call predecessors, (22), 7 states have return successors, (22), 9 states have call predecessors, (22), 10 states have call successors, (22) [2024-11-28 02:10:26,105 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 388 transitions. [2024-11-28 02:10:26,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-28 02:10:26,107 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:10:26,107 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 02:10:26,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 02:10:26,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 02:10:26,312 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:10:26,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:10:26,312 INFO L85 PathProgramCache]: Analyzing trace with hash 7163885, now seen corresponding path program 1 times [2024-11-28 02:10:26,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:10:26,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900644586] [2024-11-28 02:10:26,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:10:26,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:10:26,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:10:26,440 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-28 02:10:26,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:10:26,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900644586] [2024-11-28 02:10:26,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900644586] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:10:26,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993816665] [2024-11-28 02:10:26,441 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:10:26,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:10:26,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:10:26,444 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:10:26,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 02:10:26,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:10:26,981 INFO L256 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:10:26,984 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:10:26,993 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-28 02:10:26,993 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:10:26,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993816665] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:10:26,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:10:26,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-28 02:10:26,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482958309] [2024-11-28 02:10:26,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:10:26,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:10:26,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:10:26,999 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:10:26,999 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:10:26,999 INFO L87 Difference]: Start difference. First operand 295 states and 388 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 02:10:27,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:10:27,098 INFO L93 Difference]: Finished difference Result 464 states and 625 transitions. [2024-11-28 02:10:27,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:10:27,098 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 85 [2024-11-28 02:10:27,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:10:27,101 INFO L225 Difference]: With dead ends: 464 [2024-11-28 02:10:27,102 INFO L226 Difference]: Without dead ends: 291 [2024-11-28 02:10:27,105 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 86 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 02:10:27,106 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 1 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:10:27,106 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 232 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:10:27,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-11-28 02:10:27,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2024-11-28 02:10:27,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 217 states have (on average 1.2119815668202765) internal successors, (263), 224 states have internal predecessors, (263), 49 states have call successors, (49), 19 states have call predecessors, (49), 24 states have return successors, (70), 47 states have call predecessors, (70), 46 states have call successors, (70) [2024-11-28 02:10:27,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 382 transitions. [2024-11-28 02:10:27,189 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 382 transitions. Word has length 85 [2024-11-28 02:10:27,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:10:27,189 INFO L471 AbstractCegarLoop]: Abstraction has 291 states and 382 transitions. [2024-11-28 02:10:27,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 02:10:27,190 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 382 transitions. [2024-11-28 02:10:27,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-28 02:10:27,192 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:10:27,192 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:10:27,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 02:10:27,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 02:10:27,393 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:10:27,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:10:27,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1968738543, now seen corresponding path program 1 times [2024-11-28 02:10:27,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:10:27,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177942618] [2024-11-28 02:10:27,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:10:27,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:10:27,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:10:27,587 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-28 02:10:27,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:10:27,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177942618] [2024-11-28 02:10:27,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177942618] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:10:27,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253804120] [2024-11-28 02:10:27,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:10:27,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:10:27,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:10:27,592 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:10:27,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 02:10:27,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:10:27,924 INFO L256 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:10:27,926 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:10:27,935 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-28 02:10:27,935 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:10:27,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253804120] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:10:27,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:10:27,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2024-11-28 02:10:27,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447645187] [2024-11-28 02:10:27,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:10:27,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:10:27,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:10:27,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:10:27,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:10:27,938 INFO L87 Difference]: Start difference. First operand 291 states and 382 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, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 02:10:28,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:10:28,012 INFO L93 Difference]: Finished difference Result 380 states and 485 transitions. [2024-11-28 02:10:28,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:10:28,013 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, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 85 [2024-11-28 02:10:28,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:10:28,017 INFO L225 Difference]: With dead ends: 380 [2024-11-28 02:10:28,017 INFO L226 Difference]: Without dead ends: 201 [2024-11-28 02:10:28,019 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:10:28,019 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 1 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:10:28,020 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 232 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:10:28,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-11-28 02:10:28,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 106. [2024-11-28 02:10:28,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 80 states have (on average 1.175) internal successors, (94), 82 states have internal predecessors, (94), 16 states have call successors, (16), 8 states have call predecessors, (16), 9 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) [2024-11-28 02:10:28,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 127 transitions. [2024-11-28 02:10:28,062 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 127 transitions. Word has length 85 [2024-11-28 02:10:28,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:10:28,063 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 127 transitions. [2024-11-28 02:10:28,063 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, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 02:10:28,063 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 127 transitions. [2024-11-28 02:10:28,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-28 02:10:28,065 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:10:28,066 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:10:28,080 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 02:10:28,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 02:10:28,267 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:10:28,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:10:28,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1321939936, now seen corresponding path program 1 times [2024-11-28 02:10:28,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:10:28,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033135983] [2024-11-28 02:10:28,268 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:10:28,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:10:28,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:10:28,518 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-28 02:10:28,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:10:28,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033135983] [2024-11-28 02:10:28,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033135983] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:10:28,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445222268] [2024-11-28 02:10:28,519 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:10:28,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:10:28,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:10:28,522 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:10:28,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 02:10:28,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:10:28,899 INFO L256 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 02:10:28,902 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:10:29,050 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 02:10:29,051 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:10:29,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445222268] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:10:29,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:10:29,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-28 02:10:29,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126205691] [2024-11-28 02:10:29,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:10:29,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:10:29,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:10:29,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:10:29,053 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:10:29,053 INFO L87 Difference]: Start difference. First operand 106 states and 127 transitions. Second operand has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-28 02:10:29,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:10:29,416 INFO L93 Difference]: Finished difference Result 165 states and 197 transitions. [2024-11-28 02:10:29,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:10:29,417 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 88 [2024-11-28 02:10:29,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:10:29,418 INFO L225 Difference]: With dead ends: 165 [2024-11-28 02:10:29,419 INFO L226 Difference]: Without dead ends: 107 [2024-11-28 02:10:29,419 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2024-11-28 02:10:29,420 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 82 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:10:29,421 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 285 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:10:29,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-28 02:10:29,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 103. [2024-11-28 02:10:29,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 78 states have (on average 1.1538461538461537) internal successors, (90), 79 states have internal predecessors, (90), 16 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-28 02:10:29,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 121 transitions. [2024-11-28 02:10:29,465 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 121 transitions. Word has length 88 [2024-11-28 02:10:29,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:10:29,466 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 121 transitions. [2024-11-28 02:10:29,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-28 02:10:29,466 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 121 transitions. [2024-11-28 02:10:29,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-28 02:10:29,468 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:10:29,468 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:10:29,481 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-28 02:10:29,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 02:10:29,669 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:10:29,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:10:29,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1497628778, now seen corresponding path program 1 times [2024-11-28 02:10:29,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:10:29,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309566871] [2024-11-28 02:10:29,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:10:29,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:10:29,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:10:30,301 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-28 02:10:30,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:10:30,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309566871] [2024-11-28 02:10:30,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309566871] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:10:30,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319174571] [2024-11-28 02:10:30,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:10:30,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:10:30,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:10:30,305 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:10:30,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 02:10:30,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:10:30,715 INFO L256 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 02:10:30,718 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:10:30,758 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-28 02:10:30,758 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:10:30,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319174571] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:10:30,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:10:30,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 9 [2024-11-28 02:10:30,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757984877] [2024-11-28 02:10:30,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:10:30,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:10:30,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:10:30,760 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:10:30,760 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:10:30,760 INFO L87 Difference]: Start difference. First operand 103 states and 121 transitions. Second operand has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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 02:10:30,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:10:30,876 INFO L93 Difference]: Finished difference Result 154 states and 185 transitions. [2024-11-28 02:10:30,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:10:30,877 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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 110 [2024-11-28 02:10:30,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:10:30,879 INFO L225 Difference]: With dead ends: 154 [2024-11-28 02:10:30,879 INFO L226 Difference]: Without dead ends: 106 [2024-11-28 02:10:30,880 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:10:30,881 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 0 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:10:30,881 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 426 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:10:30,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-28 02:10:30,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2024-11-28 02:10:30,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 80 states have (on average 1.15) internal successors, (92), 82 states have internal predecessors, (92), 16 states have call successors, (16), 8 states have call predecessors, (16), 9 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) [2024-11-28 02:10:30,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 125 transitions. [2024-11-28 02:10:30,922 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 125 transitions. Word has length 110 [2024-11-28 02:10:30,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:10:30,923 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 125 transitions. [2024-11-28 02:10:30,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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 02:10:30,923 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 125 transitions. [2024-11-28 02:10:30,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-28 02:10:30,925 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:10:30,925 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 02:10:30,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-28 02:10:31,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 02:10:31,126 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:10:31,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:10:31,127 INFO L85 PathProgramCache]: Analyzing trace with hash -948954101, now seen corresponding path program 2 times [2024-11-28 02:10:31,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:10:31,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385813913] [2024-11-28 02:10:31,128 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:10:31,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:10:31,248 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:10:31,251 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:10:35,183 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 18 proven. 27 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-28 02:10:35,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:10:35,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385813913] [2024-11-28 02:10:35,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385813913] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:10:35,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478842670] [2024-11-28 02:10:35,184 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:10:35,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:10:35,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:10:35,187 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:10:35,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 02:10:35,626 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:10:35,626 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:10:35,632 INFO L256 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 94 conjuncts are in the unsatisfiable core [2024-11-28 02:10:35,639 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:10:35,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-28 02:10:35,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-28 02:10:38,939 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 02:10:38,939 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:10:38,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478842670] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:10:38,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:10:38,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [18] total 30 [2024-11-28 02:10:38,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701443441] [2024-11-28 02:10:38,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:10:38,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 02:10:38,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:10:38,941 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 02:10:38,942 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=785, Unknown=0, NotChecked=0, Total=870 [2024-11-28 02:10:38,942 INFO L87 Difference]: Start difference. First operand 106 states and 125 transitions. Second operand has 18 states, 18 states have (on average 3.7222222222222223) internal successors, (67), 17 states have internal predecessors, (67), 6 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-28 02:10:41,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:10:41,121 INFO L93 Difference]: Finished difference Result 263 states and 314 transitions. [2024-11-28 02:10:41,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 02:10:41,122 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.7222222222222223) internal successors, (67), 17 states have internal predecessors, (67), 6 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) Word has length 113 [2024-11-28 02:10:41,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:10:41,125 INFO L225 Difference]: With dead ends: 263 [2024-11-28 02:10:41,125 INFO L226 Difference]: Without dead ends: 212 [2024-11-28 02:10:41,126 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 103 SyntacticMatches, 10 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=122, Invalid=1000, Unknown=0, NotChecked=0, Total=1122 [2024-11-28 02:10:41,127 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 47 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:10:41,127 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 523 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-28 02:10:41,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-11-28 02:10:41,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 200. [2024-11-28 02:10:41,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 152 states have (on average 1.1578947368421053) internal successors, (176), 156 states have internal predecessors, (176), 30 states have call successors, (30), 14 states have call predecessors, (30), 17 states have return successors, (34), 29 states have call predecessors, (34), 28 states have call successors, (34) [2024-11-28 02:10:41,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 240 transitions. [2024-11-28 02:10:41,209 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 240 transitions. Word has length 113 [2024-11-28 02:10:41,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:10:41,210 INFO L471 AbstractCegarLoop]: Abstraction has 200 states and 240 transitions. [2024-11-28 02:10:41,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.7222222222222223) internal successors, (67), 17 states have internal predecessors, (67), 6 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-28 02:10:41,210 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 240 transitions. [2024-11-28 02:10:41,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-28 02:10:41,212 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:10:41,212 INFO L218 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:10:41,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 02:10:41,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:10:41,416 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:10:41,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:10:41,417 INFO L85 PathProgramCache]: Analyzing trace with hash -690788663, now seen corresponding path program 1 times [2024-11-28 02:10:41,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:10:41,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440425453] [2024-11-28 02:10:41,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:10:41,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:10:41,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:10:42,566 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 30 proven. 34 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-28 02:10:42,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:10:42,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440425453] [2024-11-28 02:10:42,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440425453] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:10:42,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310742066] [2024-11-28 02:10:42,567 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:10:42,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:10:42,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:10:42,569 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:10:42,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 02:10:42,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:10:42,984 INFO L256 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-11-28 02:10:42,990 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:10:43,143 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 02:10:44,614 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 74 proven. 11 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-28 02:10:44,614 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:10:46,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 227 treesize of output 211 [2024-11-28 02:10:46,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2024-11-28 02:10:46,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 45 [2024-11-28 02:10:46,494 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 53 proven. 20 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-28 02:10:46,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310742066] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:10:46,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:10:46,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 22, 20] total 52 [2024-11-28 02:10:46,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413173661] [2024-11-28 02:10:46,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:10:46,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-28 02:10:46,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:10:46,496 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-28 02:10:46,497 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=2472, Unknown=0, NotChecked=0, Total=2652 [2024-11-28 02:10:46,498 INFO L87 Difference]: Start difference. First operand 200 states and 240 transitions. Second operand has 52 states, 50 states have (on average 3.16) internal successors, (158), 51 states have internal predecessors, (158), 19 states have call successors, (29), 3 states have call predecessors, (29), 11 states have return successors, (28), 17 states have call predecessors, (28), 18 states have call successors, (28) [2024-11-28 02:10:50,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:10:54,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:10:58,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:11:02,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:11:10,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:11:10,943 INFO L93 Difference]: Finished difference Result 906 states and 1276 transitions. [2024-11-28 02:11:10,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-28 02:11:10,944 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 50 states have (on average 3.16) internal successors, (158), 51 states have internal predecessors, (158), 19 states have call successors, (29), 3 states have call predecessors, (29), 11 states have return successors, (28), 17 states have call predecessors, (28), 18 states have call successors, (28) Word has length 113 [2024-11-28 02:11:10,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:11:10,951 INFO L225 Difference]: With dead ends: 906 [2024-11-28 02:11:10,951 INFO L226 Difference]: Without dead ends: 692 [2024-11-28 02:11:10,956 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 219 SyntacticMatches, 4 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2431 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=1138, Invalid=9782, Unknown=0, NotChecked=0, Total=10920 [2024-11-28 02:11:10,957 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 673 mSDsluCounter, 2031 mSDsCounter, 0 mSdLazyCounter, 3226 mSolverCounterSat, 372 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 2125 SdHoareTripleChecker+Invalid, 3602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 3226 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:11:10,957 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [673 Valid, 2125 Invalid, 3602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 3226 Invalid, 4 Unknown, 0 Unchecked, 20.5s Time] [2024-11-28 02:11:10,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2024-11-28 02:11:11,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 516. [2024-11-28 02:11:11,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 395 states have (on average 1.1822784810126583) internal successors, (467), 405 states have internal predecessors, (467), 76 states have call successors, (76), 26 states have call predecessors, (76), 44 states have return successors, (124), 84 states have call predecessors, (124), 72 states have call successors, (124) [2024-11-28 02:11:11,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 667 transitions. [2024-11-28 02:11:11,165 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 667 transitions. Word has length 113 [2024-11-28 02:11:11,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:11:11,166 INFO L471 AbstractCegarLoop]: Abstraction has 516 states and 667 transitions. [2024-11-28 02:11:11,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 50 states have (on average 3.16) internal successors, (158), 51 states have internal predecessors, (158), 19 states have call successors, (29), 3 states have call predecessors, (29), 11 states have return successors, (28), 17 states have call predecessors, (28), 18 states have call successors, (28) [2024-11-28 02:11:11,166 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 667 transitions. [2024-11-28 02:11:11,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-28 02:11:11,168 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:11:11,169 INFO L218 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:11:11,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-28 02:11:11,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:11:11,369 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:11:11,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:11:11,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1701905913, now seen corresponding path program 1 times [2024-11-28 02:11:11,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:11:11,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723962079] [2024-11-28 02:11:11,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:11,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:11:11,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:11,737 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-28 02:11:11,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:11:11,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723962079] [2024-11-28 02:11:11,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723962079] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:11:11,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:11:11,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 02:11:11,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136245149] [2024-11-28 02:11:11,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:11:11,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:11:11,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:11:11,739 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:11:11,739 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:11:11,740 INFO L87 Difference]: Start difference. First operand 516 states and 667 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 5 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-28 02:11:12,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:11:12,289 INFO L93 Difference]: Finished difference Result 1148 states and 1556 transitions. [2024-11-28 02:11:12,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 02:11:12,290 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 5 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 113 [2024-11-28 02:11:12,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:11:12,296 INFO L225 Difference]: With dead ends: 1148 [2024-11-28 02:11:12,296 INFO L226 Difference]: Without dead ends: 556 [2024-11-28 02:11:12,300 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-11-28 02:11:12,301 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 34 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:11:12,301 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 511 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:11:12,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2024-11-28 02:11:12,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 524. [2024-11-28 02:11:12,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 399 states have (on average 1.1704260651629073) internal successors, (467), 417 states have internal predecessors, (467), 76 states have call successors, (76), 26 states have call predecessors, (76), 48 states have return successors, (126), 80 states have call predecessors, (126), 72 states have call successors, (126) [2024-11-28 02:11:12,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 669 transitions. [2024-11-28 02:11:12,562 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 669 transitions. Word has length 113 [2024-11-28 02:11:12,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:11:12,562 INFO L471 AbstractCegarLoop]: Abstraction has 524 states and 669 transitions. [2024-11-28 02:11:12,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 5 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-28 02:11:12,563 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 669 transitions. [2024-11-28 02:11:12,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-28 02:11:12,566 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:11:12,566 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, 1, 1] [2024-11-28 02:11:12,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-28 02:11:12,566 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:11:12,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:11:12,567 INFO L85 PathProgramCache]: Analyzing trace with hash 453916111, now seen corresponding path program 1 times [2024-11-28 02:11:12,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:11:12,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484701999] [2024-11-28 02:11:12,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:12,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:11:12,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:13,895 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 20 proven. 35 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-28 02:11:13,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:11:13,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484701999] [2024-11-28 02:11:13,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484701999] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:11:13,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809233360] [2024-11-28 02:11:13,896 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:13,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:11:13,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:11:13,902 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:11:13,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 02:11:14,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:14,374 INFO L256 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 82 conjuncts are in the unsatisfiable core [2024-11-28 02:11:14,380 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:11:14,537 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 02:11:14,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:11:14,545 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 02:11:14,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:11:14,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:11:14,617 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 02:11:14,621 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 02:11:15,494 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 87 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 02:11:15,494 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:11:16,632 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:11:16,632 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 42 treesize of output 35 [2024-11-28 02:11:16,667 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:11:16,667 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 259 treesize of output 267 [2024-11-28 02:11:16,681 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 184 treesize of output 176 [2024-11-28 02:11:16,810 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 02:11:16,875 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:11:16,876 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 75 treesize of output 77 [2024-11-28 02:11:16,964 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 02:11:16,980 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 8 treesize of output 6 [2024-11-28 02:11:17,181 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 23 proven. 21 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-28 02:11:17,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809233360] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:11:17,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:11:17,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 34 [2024-11-28 02:11:17,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354576906] [2024-11-28 02:11:17,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:11:17,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-28 02:11:17,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:11:17,183 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-28 02:11:17,183 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1007, Unknown=12, NotChecked=0, Total=1122 [2024-11-28 02:11:17,183 INFO L87 Difference]: Start difference. First operand 524 states and 669 transitions. Second operand has 34 states, 32 states have (on average 5.375) internal successors, (172), 34 states have internal predecessors, (172), 15 states have call successors, (27), 3 states have call predecessors, (27), 6 states have return successors, (26), 11 states have call predecessors, (26), 15 states have call successors, (26) [2024-11-28 02:11:19,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:11:19,910 INFO L93 Difference]: Finished difference Result 588 states and 769 transitions. [2024-11-28 02:11:19,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 02:11:19,911 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 5.375) internal successors, (172), 34 states have internal predecessors, (172), 15 states have call successors, (27), 3 states have call predecessors, (27), 6 states have return successors, (26), 11 states have call predecessors, (26), 15 states have call successors, (26) Word has length 115 [2024-11-28 02:11:19,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:11:19,915 INFO L225 Difference]: With dead ends: 588 [2024-11-28 02:11:19,915 INFO L226 Difference]: Without dead ends: 446 [2024-11-28 02:11:19,917 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 212 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=219, Invalid=1931, Unknown=12, NotChecked=0, Total=2162 [2024-11-28 02:11:19,921 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 106 mSDsluCounter, 2132 mSDsCounter, 0 mSdLazyCounter, 1729 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 2246 SdHoareTripleChecker+Invalid, 1786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:11:19,922 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 2246 Invalid, 1786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1729 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-28 02:11:19,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2024-11-28 02:11:20,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 374. [2024-11-28 02:11:20,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 286 states have (on average 1.1643356643356644) internal successors, (333), 299 states have internal predecessors, (333), 53 states have call successors, (53), 20 states have call predecessors, (53), 34 states have return successors, (81), 54 states have call predecessors, (81), 50 states have call successors, (81) [2024-11-28 02:11:20,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 467 transitions. [2024-11-28 02:11:20,115 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 467 transitions. Word has length 115 [2024-11-28 02:11:20,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:11:20,117 INFO L471 AbstractCegarLoop]: Abstraction has 374 states and 467 transitions. [2024-11-28 02:11:20,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 5.375) internal successors, (172), 34 states have internal predecessors, (172), 15 states have call successors, (27), 3 states have call predecessors, (27), 6 states have return successors, (26), 11 states have call predecessors, (26), 15 states have call successors, (26) [2024-11-28 02:11:20,118 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 467 transitions. [2024-11-28 02:11:20,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-28 02:11:20,120 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:11:20,120 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 02:11:20,133 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-28 02:11:20,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:11:20,321 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:11:20,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:11:20,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1330556572, now seen corresponding path program 1 times [2024-11-28 02:11:20,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:11:20,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574801301] [2024-11-28 02:11:20,321 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:20,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:11:20,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:20,804 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2024-11-28 02:11:20,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:11:20,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574801301] [2024-11-28 02:11:20,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574801301] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:11:20,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:11:20,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 02:11:20,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014535729] [2024-11-28 02:11:20,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:11:20,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:11:20,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:11:20,806 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:11:20,806 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:11:20,806 INFO L87 Difference]: Start difference. First operand 374 states and 467 transitions. Second operand has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-28 02:11:20,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:11:21,000 INFO L93 Difference]: Finished difference Result 424 states and 527 transitions. [2024-11-28 02:11:21,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:11:21,001 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 116 [2024-11-28 02:11:21,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:11:21,005 INFO L225 Difference]: With dead ends: 424 [2024-11-28 02:11:21,005 INFO L226 Difference]: Without dead ends: 422 [2024-11-28 02:11:21,006 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:11:21,006 INFO L435 NwaCegarLoop]: 72 mSDtfsCounter, 3 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:11:21,006 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 493 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:11:21,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2024-11-28 02:11:21,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 406. [2024-11-28 02:11:21,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 307 states have (on average 1.1530944625407167) internal successors, (354), 324 states have internal predecessors, (354), 57 states have call successors, (57), 23 states have call predecessors, (57), 41 states have return successors, (96), 58 states have call predecessors, (96), 54 states have call successors, (96) [2024-11-28 02:11:21,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 507 transitions. [2024-11-28 02:11:21,194 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 507 transitions. Word has length 116 [2024-11-28 02:11:21,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:11:21,195 INFO L471 AbstractCegarLoop]: Abstraction has 406 states and 507 transitions. [2024-11-28 02:11:21,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-28 02:11:21,195 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 507 transitions. [2024-11-28 02:11:21,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-28 02:11:21,197 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:11:21,198 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:11:21,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-28 02:11:21,198 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:11:21,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:11:21,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1219106194, now seen corresponding path program 1 times [2024-11-28 02:11:21,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:11:21,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895629253] [2024-11-28 02:11:21,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:21,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:11:21,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:21,794 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 22 proven. 19 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2024-11-28 02:11:21,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:11:21,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895629253] [2024-11-28 02:11:21,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895629253] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:11:21,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158732238] [2024-11-28 02:11:21,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:21,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:11:21,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:11:21,797 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:11:21,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 02:11:22,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:22,265 INFO L256 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-28 02:11:22,269 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:11:22,394 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-28 02:11:22,394 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:11:22,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158732238] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:11:22,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:11:22,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2024-11-28 02:11:22,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587869998] [2024-11-28 02:11:22,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:11:22,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:11:22,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:11:22,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:11:22,396 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2024-11-28 02:11:22,396 INFO L87 Difference]: Start difference. First operand 406 states and 507 transitions. Second operand has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-28 02:11:22,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:11:22,616 INFO L93 Difference]: Finished difference Result 666 states and 829 transitions. [2024-11-28 02:11:22,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:11:22,617 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 134 [2024-11-28 02:11:22,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:11:22,621 INFO L225 Difference]: With dead ends: 666 [2024-11-28 02:11:22,621 INFO L226 Difference]: Without dead ends: 420 [2024-11-28 02:11:22,623 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:11:22,626 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 1 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:11:22,626 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 521 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:11:22,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2024-11-28 02:11:22,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 397. [2024-11-28 02:11:22,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 301 states have (on average 1.1561461794019934) internal successors, (348), 315 states have internal predecessors, (348), 57 states have call successors, (57), 23 states have call predecessors, (57), 38 states have return successors, (87), 58 states have call predecessors, (87), 54 states have call successors, (87) [2024-11-28 02:11:22,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 492 transitions. [2024-11-28 02:11:22,790 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 492 transitions. Word has length 134 [2024-11-28 02:11:22,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:11:22,791 INFO L471 AbstractCegarLoop]: Abstraction has 397 states and 492 transitions. [2024-11-28 02:11:22,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-28 02:11:22,792 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 492 transitions. [2024-11-28 02:11:22,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-28 02:11:22,794 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:11:22,794 INFO L218 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:11:22,809 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-28 02:11:22,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-28 02:11:22,995 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:11:22,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:11:22,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1819387684, now seen corresponding path program 1 times [2024-11-28 02:11:22,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:11:22,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285812730] [2024-11-28 02:11:22,996 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:22,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:11:23,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:23,410 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-11-28 02:11:23,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:11:23,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285812730] [2024-11-28 02:11:23,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285812730] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:11:23,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:11:23,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:11:23,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502326534] [2024-11-28 02:11:23,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:11:23,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:11:23,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:11:23,412 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:11:23,412 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:11:23,412 INFO L87 Difference]: Start difference. First operand 397 states and 492 transitions. Second operand has 6 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 02:11:23,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:11:23,631 INFO L93 Difference]: Finished difference Result 411 states and 505 transitions. [2024-11-28 02:11:23,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:11:23,631 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 122 [2024-11-28 02:11:23,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:11:23,635 INFO L225 Difference]: With dead ends: 411 [2024-11-28 02:11:23,636 INFO L226 Difference]: Without dead ends: 409 [2024-11-28 02:11:23,636 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:11:23,637 INFO L435 NwaCegarLoop]: 75 mSDtfsCounter, 3 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:11:23,637 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 344 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:11:23,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2024-11-28 02:11:23,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 409. [2024-11-28 02:11:23,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 310 states have (on average 1.1516129032258065) internal successors, (357), 324 states have internal predecessors, (357), 57 states have call successors, (57), 26 states have call predecessors, (57), 41 states have return successors, (87), 58 states have call predecessors, (87), 54 states have call successors, (87) [2024-11-28 02:11:23,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 501 transitions. [2024-11-28 02:11:23,886 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 501 transitions. Word has length 122 [2024-11-28 02:11:23,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:11:23,887 INFO L471 AbstractCegarLoop]: Abstraction has 409 states and 501 transitions. [2024-11-28 02:11:23,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 02:11:23,888 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 501 transitions. [2024-11-28 02:11:23,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-28 02:11:23,894 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:11:23,894 INFO L218 NwaCegarLoop]: trace histogram [7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:11:23,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-28 02:11:23,897 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:11:23,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:11:23,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1267593539, now seen corresponding path program 3 times [2024-11-28 02:11:23,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:11:23,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695939279] [2024-11-28 02:11:23,898 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:11:23,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:11:24,093 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 02:11:24,094 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:11:28,406 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 84 proven. 26 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-28 02:11:28,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:11:28,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695939279] [2024-11-28 02:11:28,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695939279] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:11:28,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642493949] [2024-11-28 02:11:28,407 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:11:28,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:11:28,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:11:28,409 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:11:28,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 02:11:28,884 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 02:11:28,884 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:11:28,888 INFO L256 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-28 02:11:28,895 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:11:29,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-28 02:11:29,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-28 02:11:32,444 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 73 proven. 7 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-28 02:11:32,444 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:11:33,498 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 84 treesize of output 80 [2024-11-28 02:11:33,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 164 treesize of output 156 [2024-11-28 02:11:33,792 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-28 02:11:33,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642493949] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:11:33,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:11:33,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 14, 11] total 45 [2024-11-28 02:11:33,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023435253] [2024-11-28 02:11:33,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:11:33,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-28 02:11:33,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:11:33,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-28 02:11:33,795 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1840, Unknown=0, NotChecked=0, Total=1980 [2024-11-28 02:11:33,796 INFO L87 Difference]: Start difference. First operand 409 states and 501 transitions. Second operand has 45 states, 44 states have (on average 3.659090909090909) internal successors, (161), 44 states have internal predecessors, (161), 18 states have call successors, (30), 3 states have call predecessors, (30), 7 states have return successors, (29), 18 states have call predecessors, (29), 17 states have call successors, (29) [2024-11-28 02:11:40,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:11:40,662 INFO L93 Difference]: Finished difference Result 619 states and 790 transitions. [2024-11-28 02:11:40,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-28 02:11:40,663 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 3.659090909090909) internal successors, (161), 44 states have internal predecessors, (161), 18 states have call successors, (30), 3 states have call predecessors, (30), 7 states have return successors, (29), 18 states have call predecessors, (29), 17 states have call successors, (29) Word has length 135 [2024-11-28 02:11:40,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:11:40,666 INFO L225 Difference]: With dead ends: 619 [2024-11-28 02:11:40,666 INFO L226 Difference]: Without dead ends: 284 [2024-11-28 02:11:40,669 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 253 SyntacticMatches, 9 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1737 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=607, Invalid=7049, Unknown=0, NotChecked=0, Total=7656 [2024-11-28 02:11:40,670 INFO L435 NwaCegarLoop]: 55 mSDtfsCounter, 202 mSDsluCounter, 1278 mSDsCounter, 0 mSdLazyCounter, 1827 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 1333 SdHoareTripleChecker+Invalid, 1916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:11:40,671 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 1333 Invalid, 1916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1827 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-28 02:11:40,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2024-11-28 02:11:40,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 217. [2024-11-28 02:11:40,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 166 states have (on average 1.0963855421686748) internal successors, (182), 171 states have internal predecessors, (182), 29 states have call successors, (29), 18 states have call predecessors, (29), 21 states have return successors, (31), 27 states have call predecessors, (31), 27 states have call successors, (31) [2024-11-28 02:11:40,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 242 transitions. [2024-11-28 02:11:40,771 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 242 transitions. Word has length 135 [2024-11-28 02:11:40,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:11:40,772 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 242 transitions. [2024-11-28 02:11:40,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 3.659090909090909) internal successors, (161), 44 states have internal predecessors, (161), 18 states have call successors, (30), 3 states have call predecessors, (30), 7 states have return successors, (29), 18 states have call predecessors, (29), 17 states have call successors, (29) [2024-11-28 02:11:40,772 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 242 transitions. [2024-11-28 02:11:40,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-28 02:11:40,774 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:11:40,774 INFO L218 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:11:40,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-28 02:11:40,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:11:40,975 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:11:40,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:11:40,976 INFO L85 PathProgramCache]: Analyzing trace with hash 218478925, now seen corresponding path program 1 times [2024-11-28 02:11:40,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:11:40,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882315220] [2024-11-28 02:11:40,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:40,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:11:41,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:42,268 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-11-28 02:11:42,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:11:42,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882315220] [2024-11-28 02:11:42,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882315220] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:11:42,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:11:42,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 02:11:42,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850952634] [2024-11-28 02:11:42,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:11:42,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:11:42,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:11:42,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:11:42,271 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:11:42,271 INFO L87 Difference]: Start difference. First operand 217 states and 242 transitions. Second operand has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 6 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2024-11-28 02:11:42,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:11:42,705 INFO L93 Difference]: Finished difference Result 227 states and 251 transitions. [2024-11-28 02:11:42,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:11:42,706 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 6 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 129 [2024-11-28 02:11:42,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:11:42,709 INFO L225 Difference]: With dead ends: 227 [2024-11-28 02:11:42,709 INFO L226 Difference]: Without dead ends: 223 [2024-11-28 02:11:42,710 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2024-11-28 02:11:42,710 INFO L435 NwaCegarLoop]: 72 mSDtfsCounter, 11 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:11:42,711 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 535 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:11:42,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2024-11-28 02:11:42,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2024-11-28 02:11:42,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 171 states have (on average 1.087719298245614) internal successors, (186), 175 states have internal predecessors, (186), 29 states have call successors, (29), 20 states have call predecessors, (29), 22 states have return successors, (31), 27 states have call predecessors, (31), 27 states have call successors, (31) [2024-11-28 02:11:42,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 246 transitions. [2024-11-28 02:11:42,801 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 246 transitions. Word has length 129 [2024-11-28 02:11:42,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:11:42,804 INFO L471 AbstractCegarLoop]: Abstraction has 223 states and 246 transitions. [2024-11-28 02:11:42,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 6 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2024-11-28 02:11:42,804 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 246 transitions. [2024-11-28 02:11:42,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-28 02:11:42,805 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:11:42,806 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:11:42,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-28 02:11:42,806 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:11:42,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:11:42,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1318697128, now seen corresponding path program 1 times [2024-11-28 02:11:42,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:11:42,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231217898] [2024-11-28 02:11:42,807 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:42,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:11:42,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:43,425 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 9 proven. 32 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-11-28 02:11:43,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:11:43,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231217898] [2024-11-28 02:11:43,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231217898] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:11:43,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877439313] [2024-11-28 02:11:43,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:43,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:11:43,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:11:43,428 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:11:43,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 02:11:43,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:43,948 INFO L256 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-28 02:11:43,950 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:11:44,083 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-28 02:11:44,083 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:11:44,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877439313] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:11:44,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:11:44,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2024-11-28 02:11:44,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178744027] [2024-11-28 02:11:44,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:11:44,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:11:44,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:11:44,084 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:11:44,085 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2024-11-28 02:11:44,085 INFO L87 Difference]: Start difference. First operand 223 states and 246 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-28 02:11:44,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:11:44,229 INFO L93 Difference]: Finished difference Result 306 states and 341 transitions. [2024-11-28 02:11:44,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:11:44,230 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 136 [2024-11-28 02:11:44,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:11:44,232 INFO L225 Difference]: With dead ends: 306 [2024-11-28 02:11:44,232 INFO L226 Difference]: Without dead ends: 224 [2024-11-28 02:11:44,233 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:11:44,233 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 1 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:11:44,233 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 515 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:11:44,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-11-28 02:11:44,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 223. [2024-11-28 02:11:44,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 171 states have (on average 1.0818713450292399) internal successors, (185), 175 states have internal predecessors, (185), 29 states have call successors, (29), 20 states have call predecessors, (29), 22 states have return successors, (31), 27 states have call predecessors, (31), 27 states have call successors, (31) [2024-11-28 02:11:44,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 245 transitions. [2024-11-28 02:11:44,336 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 245 transitions. Word has length 136 [2024-11-28 02:11:44,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:11:44,336 INFO L471 AbstractCegarLoop]: Abstraction has 223 states and 245 transitions. [2024-11-28 02:11:44,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-28 02:11:44,337 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 245 transitions. [2024-11-28 02:11:44,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-28 02:11:44,338 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:11:44,338 INFO L218 NwaCegarLoop]: trace histogram [7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:11:44,353 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-28 02:11:44,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:11:44,539 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:11:44,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:11:44,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1609344533, now seen corresponding path program 2 times [2024-11-28 02:11:44,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:11:44,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777237369] [2024-11-28 02:11:44,540 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:11:44,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:11:44,654 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:11:44,654 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:11:50,364 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 37 proven. 83 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-28 02:11:50,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:11:50,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777237369] [2024-11-28 02:11:50,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777237369] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:11:50,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104965455] [2024-11-28 02:11:50,365 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:11:50,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:11:50,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:11:50,368 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:11:50,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-28 02:11:50,898 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:11:50,898 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:11:50,902 INFO L256 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 102 conjuncts are in the unsatisfiable core [2024-11-28 02:11:50,909 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:11:51,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:11:51,138 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 27 treesize of output 15 [2024-11-28 02:11:51,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:11:51,155 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 27 treesize of output 15 [2024-11-28 02:11:51,315 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-28 02:11:51,316 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 2 case distinctions, treesize of input 138 treesize of output 82 [2024-11-28 02:11:51,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:11:51,333 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 32 [2024-11-28 02:11:57,942 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 85 proven. 1 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-11-28 02:11:57,942 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:12:11,293 INFO L349 Elim1Store]: treesize reduction 2573, result has 25.5 percent of original size [2024-11-28 02:12:11,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 5713845 treesize of output 5484459 [2024-11-28 02:12:18,290 WARN L286 SmtUtils]: Spent 6.99s on a formula simplification. DAG size of input: 808 DAG size of output: 631 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:12:34,058 WARN L286 SmtUtils]: Spent 15.14s on a formula simplification. DAG size of input: 753 DAG size of output: 360 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-28 02:12:34,059 INFO L349 Elim1Store]: treesize reduction 1863, result has 33.2 percent of original size [2024-11-28 02:12:34,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 18 select indices, 18 select index equivalence classes, 4 disjoint index pairs (out of 153 index pairs), introduced 22 new quantified variables, introduced 171 case distinctions, treesize of input 1895607 treesize of output 1768660 [2024-11-28 02:13:11,294 WARN L286 SmtUtils]: Spent 37.22s on a formula simplification. DAG size of input: 3640 DAG size of output: 1973 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:13:14,617 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:13:14,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 60718 treesize of output 59836 [2024-11-28 02:13:18,120 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:13:18,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 61798 treesize of output 61710 [2024-11-28 02:15:05,080 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2024-11-28 02:15:05,080 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/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 02:15:05,082 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-11-28 02:15:05,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-28 02:15:05,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:15:05,286 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_f573548e-ca55-4f50-a20e-e03c7a6c50cc/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:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.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) ... 68 more [2024-11-28 02:15:05,303 INFO L158 Benchmark]: Toolchain (without parser) took 433531.94ms. Allocated memory was 142.6MB in the beginning and 1.6GB in the end (delta: 1.5GB). Free memory was 113.0MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 997.0MB. Max. memory is 16.1GB. [2024-11-28 02:15:05,304 INFO L158 Benchmark]: CDTParser took 2.27ms. Allocated memory is still 142.6MB. Free memory is still 79.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:15:05,304 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3143.04ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 112.9MB in the beginning and 371.5MB in the end (delta: -258.7MB). Peak memory consumption was 80.7MB. Max. memory is 16.1GB. [2024-11-28 02:15:05,304 INFO L158 Benchmark]: Boogie Procedure Inliner took 130.01ms. Allocated memory is still 427.8MB. Free memory was 371.5MB in the beginning and 366.6MB in the end (delta: 5.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:15:05,304 INFO L158 Benchmark]: Boogie Preprocessor took 84.81ms. Allocated memory is still 427.8MB. Free memory was 366.6MB in the beginning and 362.5MB in the end (delta: 4.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:15:05,305 INFO L158 Benchmark]: RCFGBuilder took 1028.00ms. Allocated memory is still 427.8MB. Free memory was 362.5MB in the beginning and 336.4MB in the end (delta: 26.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-28 02:15:05,305 INFO L158 Benchmark]: TraceAbstraction took 429136.29ms. Allocated memory was 427.8MB in the beginning and 1.6GB in the end (delta: 1.2GB). Free memory was 335.7MB in the beginning and 1.4GB in the end (delta: -1.1GB). Peak memory consumption was 927.0MB. Max. memory is 16.1GB. [2024-11-28 02:15:05,310 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.27ms. Allocated memory is still 142.6MB. Free memory is still 79.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3143.04ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 112.9MB in the beginning and 371.5MB in the end (delta: -258.7MB). Peak memory consumption was 80.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 130.01ms. Allocated memory is still 427.8MB. Free memory was 371.5MB in the beginning and 366.6MB in the end (delta: 5.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 84.81ms. Allocated memory is still 427.8MB. Free memory was 366.6MB in the beginning and 362.5MB in the end (delta: 4.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1028.00ms. Allocated memory is still 427.8MB. Free memory was 362.5MB in the beginning and 336.4MB in the end (delta: 26.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 429136.29ms. Allocated memory was 427.8MB in the beginning and 1.6GB in the end (delta: 1.2GB). Free memory was 335.7MB in the beginning and 1.4GB in the end (delta: -1.1GB). Peak memory consumption was 927.0MB. 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_f573548e-ca55-4f50-a20e-e03c7a6c50cc/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_f573548e-ca55-4f50-a20e-e03c7a6c50cc/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_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/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_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/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_f573548e-ca55-4f50-a20e-e03c7a6c50cc/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 7aeda8ef841ef7069da39f878404252c33796f5e53e1f416b530364b2ef30242 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:15:08,551 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:15:08,682 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-28 02:15:08,694 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:15:08,695 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:15:08,779 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:15:08,784 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:15:08,784 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:15:08,785 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:15:08,785 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:15:08,785 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:15:08,785 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:15:08,786 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:15:08,786 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:15:08,786 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:15:08,786 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:15:08,790 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:15:08,790 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:15:08,790 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:15:08,790 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:15:08,791 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:15:08,791 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 02:15:08,791 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-28 02:15:08,791 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-28 02:15:08,791 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:15:08,791 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:15:08,791 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:15:08,791 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:15:08,791 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:15:08,792 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:15:08,792 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:15:08,792 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:15:08,792 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:15:08,792 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:15:08,792 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:15:08,792 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:15:08,792 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:15:08,792 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:15:08,793 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:15:08,793 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:15:08,793 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:15:08,794 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-28 02:15:08,794 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-28 02:15:08,796 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:15:08,797 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:15:08,797 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:15:08,797 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:15:08,797 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_f573548e-ca55-4f50-a20e-e03c7a6c50cc/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 -> 7aeda8ef841ef7069da39f878404252c33796f5e53e1f416b530364b2ef30242 [2024-11-28 02:15:09,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:15:09,194 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:15:09,197 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:15:09,199 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:15:09,199 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:15:09,205 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i [2024-11-28 02:15:12,952 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/data/20d6824ee/570b86d27ae6472aa8eead54f6f3d493/FLAG75f4222b5 [2024-11-28 02:15:13,620 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:15:13,621 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i [2024-11-28 02:15:13,678 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/data/20d6824ee/570b86d27ae6472aa8eead54f6f3d493/FLAG75f4222b5 [2024-11-28 02:15:13,711 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/data/20d6824ee/570b86d27ae6472aa8eead54f6f3d493 [2024-11-28 02:15:13,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:15:13,719 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:15:13,722 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:15:13,724 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:15:13,734 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:15:13,735 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:15:13" (1/1) ... [2024-11-28 02:15:13,739 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7690eca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:15:13, skipping insertion in model container [2024-11-28 02:15:13,739 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:15:13" (1/1) ... [2024-11-28 02:15:13,875 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:15:14,274 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_f573548e-ca55-4f50-a20e-e03c7a6c50cc/sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i[4496,4509] [2024-11-28 02:15:14,283 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_f573548e-ca55-4f50-a20e-e03c7a6c50cc/sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i[4556,4569] [2024-11-28 02:15:15,255 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 02:15:15,401 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 02:15:15,402 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 02:15:15,403 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 02:15:15,419 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 02:15:15,422 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:15:15,423 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:15:15,427 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:15:15,429 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 02:15:15,429 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:15:15,431 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:15:15,436 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 02:15:15,436 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 02:15:15,440 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 02:15:15,441 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 02:15:15,453 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:15:15,454 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 02:15:15,455 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:15:15,455 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 02:15:15,457 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:15:15,458 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 02:15:15,458 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:15:15,459 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 02:15:15,461 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:15:15,463 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 02:15:15,463 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:15:15,464 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 02:15:15,464 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:15:15,465 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:15:16,065 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 02:15:16,066 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 02:15:16,067 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 02:15:16,067 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 02:15:16,335 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 02:15:16,358 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_f573548e-ca55-4f50-a20e-e03c7a6c50cc/sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i[150476,150489] [2024-11-28 02:15:16,360 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:15:16,387 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-28 02:15:16,426 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:15:16,437 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_f573548e-ca55-4f50-a20e-e03c7a6c50cc/sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i[4496,4509] [2024-11-28 02:15:16,437 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_f573548e-ca55-4f50-a20e-e03c7a6c50cc/sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i[4556,4569] [2024-11-28 02:15:16,487 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 02:15:16,519 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 02:15:16,520 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 02:15:16,521 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 02:15:16,532 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 02:15:16,534 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:15:16,535 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:15:16,535 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:15:16,536 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 02:15:16,536 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:15:16,538 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:15:16,542 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 02:15:16,546 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 02:15:16,548 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 02:15:16,549 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 02:15:16,562 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:15:16,563 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 02:15:16,564 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:15:16,565 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 02:15:16,568 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:15:16,569 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 02:15:16,569 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:15:16,570 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 02:15:16,571 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:15:16,573 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 02:15:16,574 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:15:16,574 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 02:15:16,575 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:15:16,577 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:15:16,675 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 02:15:16,676 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 02:15:16,677 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 02:15:16,677 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 02:15:16,729 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 02:15:16,742 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_f573548e-ca55-4f50-a20e-e03c7a6c50cc/sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i[150476,150489] [2024-11-28 02:15:16,743 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:15:16,755 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:15:16,774 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_f573548e-ca55-4f50-a20e-e03c7a6c50cc/sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i[4496,4509] [2024-11-28 02:15:16,778 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_f573548e-ca55-4f50-a20e-e03c7a6c50cc/sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i[4556,4569] [2024-11-28 02:15:16,859 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:15:16,860 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:15:16,860 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:15:16,861 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:15:16,862 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:15:16,871 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:15:16,872 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:15:16,874 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:15:16,874 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:15:16,876 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:15:16,876 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:15:16,879 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:15:16,879 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:15:17,060 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_f573548e-ca55-4f50-a20e-e03c7a6c50cc/sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i[150476,150489] [2024-11-28 02:15:17,061 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:15:17,283 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:15:17,284 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:15:17 WrapperNode [2024-11-28 02:15:17,284 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:15:17,285 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:15:17,286 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:15:17,286 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:15:17,294 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:15:17" (1/1) ... [2024-11-28 02:15:17,382 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:15:17" (1/1) ... [2024-11-28 02:15:17,424 INFO L138 Inliner]: procedures = 687, calls = 1039, calls flagged for inlining = 53, calls inlined = 6, statements flattened = 142 [2024-11-28 02:15:17,425 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:15:17,425 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:15:17,426 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:15:17,426 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:15:17,442 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:15:17" (1/1) ... [2024-11-28 02:15:17,442 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:15:17" (1/1) ... [2024-11-28 02:15:17,448 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:15:17" (1/1) ... [2024-11-28 02:15:17,480 INFO L175 MemorySlicer]: Split 24 memory accesses to 3 slices as follows [2, 17, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 5]. The 6 writes are split as follows [0, 6, 0]. [2024-11-28 02:15:17,483 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:15:17" (1/1) ... [2024-11-28 02:15:17,484 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:15:17" (1/1) ... [2024-11-28 02:15:17,518 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:15:17" (1/1) ... [2024-11-28 02:15:17,523 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:15:17" (1/1) ... [2024-11-28 02:15:17,531 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:15:17" (1/1) ... [2024-11-28 02:15:17,546 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:15:17" (1/1) ... [2024-11-28 02:15:17,553 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:15:17" (1/1) ... [2024-11-28 02:15:17,564 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:15:17,565 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:15:17,569 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:15:17,569 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:15:17,571 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:15:17" (1/1) ... [2024-11-28 02:15:17,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:15:17,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:15:17,623 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:15:17,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:15:17,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 02:15:17,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-28 02:15:17,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-28 02:15:17,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-28 02:15:17,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 02:15:17,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 02:15:17,676 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2024-11-28 02:15:17,676 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2024-11-28 02:15:17,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 02:15:17,677 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2024-11-28 02:15:17,677 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2024-11-28 02:15:17,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:15:17,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 02:15:17,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 02:15:17,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-28 02:15:17,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:15:17,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:15:17,678 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 02:15:17,678 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 02:15:17,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 02:15:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 02:15:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 02:15:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 02:15:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 02:15:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-28 02:15:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-28 02:15:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-28 02:15:17,680 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-28 02:15:18,131 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:15:18,134 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:15:18,768 INFO L? ?]: Removed 56 outVars from TransFormulas that were not future-live. [2024-11-28 02:15:18,768 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:15:18,788 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:15:18,788 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 02:15:18,790 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:15:18 BoogieIcfgContainer [2024-11-28 02:15:18,790 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:15:18,794 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:15:18,794 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:15:18,801 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:15:18,801 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:15:13" (1/3) ... [2024-11-28 02:15:18,802 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a99b40f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:15:18, skipping insertion in model container [2024-11-28 02:15:18,803 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:15:17" (2/3) ... [2024-11-28 02:15:18,804 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a99b40f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:15:18, skipping insertion in model container [2024-11-28 02:15:18,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:15:18" (3/3) ... [2024-11-28 02:15:18,807 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_linked_list_rbegin_harness.i [2024-11-28 02:15:18,826 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:15:18,828 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_linked_list_rbegin_harness.i that has 6 procedures, 69 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-28 02:15:18,905 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:15:18,927 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;@1d2dc98d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:15:18,927 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:15:18,934 INFO L276 IsEmpty]: Start isEmpty. Operand has 69 states, 49 states have (on average 1.346938775510204) internal successors, (66), 50 states have internal predecessors, (66), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-28 02:15:18,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-28 02:15:18,951 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:15:18,953 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 02:15:18,953 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:15:18,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:15:18,963 INFO L85 PathProgramCache]: Analyzing trace with hash 324213296, now seen corresponding path program 1 times [2024-11-28 02:15:18,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:15:18,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1705554366] [2024-11-28 02:15:18,979 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:15:18,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:15:18,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:15:18,987 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:15:18,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:15:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:15:19,400 INFO L256 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 02:15:19,413 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:15:19,464 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 02:15:19,464 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:15:19,465 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:15:19,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705554366] [2024-11-28 02:15:19,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705554366] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:15:19,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:15:19,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:15:19,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298211001] [2024-11-28 02:15:19,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:15:19,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:15:19,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:15:19,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:15:19,499 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:15:19,501 INFO L87 Difference]: Start difference. First operand has 69 states, 49 states have (on average 1.346938775510204) internal successors, (66), 50 states have internal predecessors, (66), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 02:15:19,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:15:19,533 INFO L93 Difference]: Finished difference Result 130 states and 186 transitions. [2024-11-28 02:15:19,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:15:19,535 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 02:15:19,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:15:19,543 INFO L225 Difference]: With dead ends: 130 [2024-11-28 02:15:19,543 INFO L226 Difference]: Without dead ends: 64 [2024-11-28 02:15:19,547 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 02:15:19,551 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:15:19,552 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:15:19,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-28 02:15:19,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-11-28 02:15:19,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 45 states have (on average 1.288888888888889) internal successors, (58), 46 states have internal predecessors, (58), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-28 02:15:19,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 83 transitions. [2024-11-28 02:15:19,599 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 83 transitions. Word has length 68 [2024-11-28 02:15:19,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:15:19,599 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 83 transitions. [2024-11-28 02:15:19,600 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 02:15:19,600 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 83 transitions. [2024-11-28 02:15:19,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-28 02:15:19,604 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:15:19,604 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 02:15:19,616 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:15:19,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:15:19,805 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:15:19,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:15:19,810 INFO L85 PathProgramCache]: Analyzing trace with hash -962094674, now seen corresponding path program 1 times [2024-11-28 02:15:19,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:15:19,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [605779768] [2024-11-28 02:15:19,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:15:19,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:15:19,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:15:19,818 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:15:19,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:15:20,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:15:20,155 INFO L256 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 02:15:20,167 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:15:20,306 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 02:15:20,307 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:15:20,307 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:15:20,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605779768] [2024-11-28 02:15:20,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605779768] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:15:20,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:15:20,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:15:20,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418947203] [2024-11-28 02:15:20,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:15:20,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:15:20,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:15:20,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:15:20,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:15:20,311 INFO L87 Difference]: Start difference. First operand 64 states and 83 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 02:15:20,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:15:20,440 INFO L93 Difference]: Finished difference Result 116 states and 154 transitions. [2024-11-28 02:15:20,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:15:20,442 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 02:15:20,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:15:20,445 INFO L225 Difference]: With dead ends: 116 [2024-11-28 02:15:20,445 INFO L226 Difference]: Without dead ends: 66 [2024-11-28 02:15:20,447 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 02:15:20,448 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 0 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 382 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 02:15:20,449 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 382 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:15:20,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-28 02:15:20,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-11-28 02:15:20,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 46 states have (on average 1.2826086956521738) internal successors, (59), 48 states have internal predecessors, (59), 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 02:15:20,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 87 transitions. [2024-11-28 02:15:20,478 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 87 transitions. Word has length 68 [2024-11-28 02:15:20,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:15:20,479 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 87 transitions. [2024-11-28 02:15:20,479 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 02:15:20,479 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 87 transitions. [2024-11-28 02:15:20,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-28 02:15:20,483 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:15:20,483 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 02:15:20,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:15:20,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:15:20,688 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:15:20,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:15:20,689 INFO L85 PathProgramCache]: Analyzing trace with hash 65585162, now seen corresponding path program 1 times [2024-11-28 02:15:20,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:15:20,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [99516682] [2024-11-28 02:15:20,690 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:15:20,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:15:20,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:15:20,693 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:15:20,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:15:21,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:15:21,022 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 02:15:21,027 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:15:21,198 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 02:15:21,199 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:15:21,199 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:15:21,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99516682] [2024-11-28 02:15:21,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99516682] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:15:21,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:15:21,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:15:21,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488722763] [2024-11-28 02:15:21,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:15:21,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:15:21,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:15:21,205 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:15:21,205 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:15:21,205 INFO L87 Difference]: Start difference. First operand 66 states and 87 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 02:15:21,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:15:21,447 INFO L93 Difference]: Finished difference Result 123 states and 165 transitions. [2024-11-28 02:15:21,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:15:21,448 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 02:15:21,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:15:21,450 INFO L225 Difference]: With dead ends: 123 [2024-11-28 02:15:21,450 INFO L226 Difference]: Without dead ends: 71 [2024-11-28 02:15:21,451 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:15:21,452 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 21 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:15:21,452 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 300 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:15:21,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-28 02:15:21,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2024-11-28 02:15:21,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 48 states have (on average 1.2708333333333333) internal successors, (61), 51 states have internal predecessors, (61), 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 02:15:21,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 91 transitions. [2024-11-28 02:15:21,467 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 91 transitions. Word has length 70 [2024-11-28 02:15:21,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:15:21,468 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 91 transitions. [2024-11-28 02:15:21,468 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 02:15:21,468 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 91 transitions. [2024-11-28 02:15:21,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-28 02:15:21,470 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:15:21,471 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 02:15:21,485 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:15:21,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:15:21,674 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:15:21,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:15:21,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1456066216, now seen corresponding path program 1 times [2024-11-28 02:15:21,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:15:21,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1704785584] [2024-11-28 02:15:21,676 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:15:21,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:15:21,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:15:21,680 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:15:21,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:15:21,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:15:21,935 INFO L256 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 02:15:21,939 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:15:22,127 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 02:15:22,128 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:15:22,128 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:15:22,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704785584] [2024-11-28 02:15:22,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704785584] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:15:22,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:15:22,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 02:15:22,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423184074] [2024-11-28 02:15:22,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:15:22,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:15:22,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:15:22,131 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:15:22,131 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:15:22,132 INFO L87 Difference]: Start difference. First operand 69 states and 91 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 02:15:22,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:15:22,518 INFO L93 Difference]: Finished difference Result 135 states and 183 transitions. [2024-11-28 02:15:22,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:15:22,519 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 02:15:22,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:15:22,521 INFO L225 Difference]: With dead ends: 135 [2024-11-28 02:15:22,521 INFO L226 Difference]: Without dead ends: 80 [2024-11-28 02:15:22,522 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 02:15:22,526 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 30 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:15:22,527 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 354 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:15:22,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-28 02:15:22,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 71. [2024-11-28 02:15:22,549 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 02:15:22,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 94 transitions. [2024-11-28 02:15:22,555 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 94 transitions. Word has length 72 [2024-11-28 02:15:22,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:15:22,556 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 94 transitions. [2024-11-28 02:15:22,556 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 02:15:22,556 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 94 transitions. [2024-11-28 02:15:22,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-28 02:15:22,562 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:15:22,562 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 02:15:22,579 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 02:15:22,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:15:22,763 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:15:22,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:15:22,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1823773475, now seen corresponding path program 1 times [2024-11-28 02:15:22,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:15:22,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1512285537] [2024-11-28 02:15:22,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:15:22,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:15:22,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:15:22,768 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:15:22,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:15:23,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:15:23,025 INFO L256 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:15:23,028 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:15:23,056 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 02:15:23,058 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:15:23,058 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:15:23,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512285537] [2024-11-28 02:15:23,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512285537] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:15:23,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:15:23,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:15:23,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244732336] [2024-11-28 02:15:23,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:15:23,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:15:23,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:15:23,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:15:23,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:15:23,062 INFO L87 Difference]: Start difference. First operand 71 states and 94 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 02:15:23,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:15:23,117 INFO L93 Difference]: Finished difference Result 132 states and 182 transitions. [2024-11-28 02:15:23,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:15:23,119 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 02:15:23,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:15:23,120 INFO L225 Difference]: With dead ends: 132 [2024-11-28 02:15:23,121 INFO L226 Difference]: Without dead ends: 75 [2024-11-28 02:15:23,121 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 02:15:23,122 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 2 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:15:23,122 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 154 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:15:23,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-28 02:15:23,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2024-11-28 02:15:23,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 54 states have internal predecessors, (65), 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 02:15:23,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 95 transitions. [2024-11-28 02:15:23,136 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 95 transitions. Word has length 73 [2024-11-28 02:15:23,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:15:23,136 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 95 transitions. [2024-11-28 02:15:23,136 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 02:15:23,137 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 95 transitions. [2024-11-28 02:15:23,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-28 02:15:23,138 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:15:23,138 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 02:15:23,153 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 02:15:23,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:15:23,343 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:15:23,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:15:23,343 INFO L85 PathProgramCache]: Analyzing trace with hash -222800603, now seen corresponding path program 1 times [2024-11-28 02:15:23,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:15:23,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1831343495] [2024-11-28 02:15:23,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:15:23,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:15:23,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:15:23,349 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:15:23,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:15:23,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:15:23,629 INFO L256 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 02:15:23,632 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:15:23,701 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 02:15:23,701 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:15:23,701 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:15:23,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831343495] [2024-11-28 02:15:23,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831343495] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:15:23,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:15:23,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:15:23,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473570710] [2024-11-28 02:15:23,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:15:23,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:15:23,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:15:23,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:15:23,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:15:23,704 INFO L87 Difference]: Start difference. First operand 72 states and 95 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 02:15:23,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:15:23,795 INFO L93 Difference]: Finished difference Result 123 states and 163 transitions. [2024-11-28 02:15:23,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:15:23,797 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 02:15:23,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:15:23,799 INFO L225 Difference]: With dead ends: 123 [2024-11-28 02:15:23,802 INFO L226 Difference]: Without dead ends: 72 [2024-11-28 02:15:23,802 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 02:15:23,803 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 0 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 381 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 02:15:23,804 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 381 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:15:23,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-28 02:15:23,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-11-28 02:15:23,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 54 states have internal predecessors, (65), 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 02:15:23,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 94 transitions. [2024-11-28 02:15:23,825 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 94 transitions. Word has length 81 [2024-11-28 02:15:23,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:15:23,827 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 94 transitions. [2024-11-28 02:15:23,828 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 02:15:23,828 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 94 transitions. [2024-11-28 02:15:23,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-28 02:15:23,830 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:15:23,830 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 02:15:23,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 02:15:24,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:15:24,031 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:15:24,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:15:24,031 INFO L85 PathProgramCache]: Analyzing trace with hash -2030628927, now seen corresponding path program 1 times [2024-11-28 02:15:24,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:15:24,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [495215236] [2024-11-28 02:15:24,032 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:15:24,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:15:24,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:15:24,034 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:15:24,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:15:24,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:15:24,309 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:15:24,313 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:15:24,502 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 02:15:24,502 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:15:24,502 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:15:24,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495215236] [2024-11-28 02:15:24,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495215236] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:15:24,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:15:24,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 02:15:24,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573317465] [2024-11-28 02:15:24,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:15:24,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:15:24,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:15:24,505 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:15:24,505 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:15:24,505 INFO L87 Difference]: Start difference. First operand 72 states and 94 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 02:15:24,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:15:24,790 INFO L93 Difference]: Finished difference Result 132 states and 171 transitions. [2024-11-28 02:15:24,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:15:24,791 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 02:15:24,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:15:24,793 INFO L225 Difference]: With dead ends: 132 [2024-11-28 02:15:24,793 INFO L226 Difference]: Without dead ends: 74 [2024-11-28 02:15:24,794 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 02:15:24,795 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 22 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:15:24,795 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 363 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:15:24,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-28 02:15:24,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2024-11-28 02:15:24,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 51 states have (on average 1.2549019607843137) internal successors, (64), 54 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 02:15:24,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 93 transitions. [2024-11-28 02:15:24,819 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 93 transitions. Word has length 83 [2024-11-28 02:15:24,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:15:24,819 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 93 transitions. [2024-11-28 02:15:24,820 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 02:15:24,820 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 93 transitions. [2024-11-28 02:15:24,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-28 02:15:24,823 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:15:24,823 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 02:15:24,843 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 02:15:25,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:15:25,028 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:15:25,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:15:25,029 INFO L85 PathProgramCache]: Analyzing trace with hash 982842831, now seen corresponding path program 1 times [2024-11-28 02:15:25,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:15:25,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [977741361] [2024-11-28 02:15:25,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:15:25,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:15:25,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:15:25,032 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:15:25,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 02:15:25,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:15:25,312 INFO L256 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 02:15:25,342 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:15:25,529 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 02:15:25,529 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:15:25,529 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:15:25,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977741361] [2024-11-28 02:15:25,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977741361] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:15:25,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:15:25,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 02:15:25,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531289921] [2024-11-28 02:15:25,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:15:25,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:15:25,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:15:25,536 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:15:25,537 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:15:25,537 INFO L87 Difference]: Start difference. First operand 72 states and 93 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 02:15:25,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:15:25,896 INFO L93 Difference]: Finished difference Result 132 states and 170 transitions. [2024-11-28 02:15:25,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:15:25,897 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 02:15:25,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:15:25,899 INFO L225 Difference]: With dead ends: 132 [2024-11-28 02:15:25,899 INFO L226 Difference]: Without dead ends: 73 [2024-11-28 02:15:25,899 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 02:15:25,900 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 31 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:15:25,900 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 408 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:15:25,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-28 02:15:25,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 68. [2024-11-28 02:15:25,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 48 states have (on average 1.25) internal successors, (60), 50 states have internal predecessors, (60), 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 02:15:25,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 87 transitions. [2024-11-28 02:15:25,924 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 87 transitions. Word has length 85 [2024-11-28 02:15:25,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:15:25,924 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 87 transitions. [2024-11-28 02:15:25,924 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 02:15:25,925 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 87 transitions. [2024-11-28 02:15:25,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-28 02:15:25,927 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:15:25,927 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 02:15:25,942 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 02:15:26,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:15:26,128 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:15:26,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:15:26,128 INFO L85 PathProgramCache]: Analyzing trace with hash -216580986, now seen corresponding path program 2 times [2024-11-28 02:15:26,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:15:26,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1862570951] [2024-11-28 02:15:26,129 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:15:26,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:15:26,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:15:26,131 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:15:26,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 02:15:26,396 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:15:26,396 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:15:26,401 INFO L256 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 02:15:26,403 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:15:26,465 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 02:15:26,465 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:15:26,465 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:15:26,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862570951] [2024-11-28 02:15:26,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862570951] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:15:26,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:15:26,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 02:15:26,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328335479] [2024-11-28 02:15:26,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:15:26,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:15:26,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:15:26,467 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:15:26,467 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:15:26,467 INFO L87 Difference]: Start difference. First operand 68 states and 87 transitions. Second operand has 7 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 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 02:15:26,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:15:26,537 INFO L93 Difference]: Finished difference Result 125 states and 163 transitions. [2024-11-28 02:15:26,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:15:26,538 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 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 94 [2024-11-28 02:15:26,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:15:26,540 INFO L225 Difference]: With dead ends: 125 [2024-11-28 02:15:26,540 INFO L226 Difference]: Without dead ends: 71 [2024-11-28 02:15:26,540 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 88 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 02:15:26,541 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 0 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 447 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 02:15:26,541 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 447 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:15:26,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-28 02:15:26,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-11-28 02:15:26,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 50 states have (on average 1.24) internal successors, (62), 53 states have internal predecessors, (62), 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 02:15:26,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 92 transitions. [2024-11-28 02:15:26,551 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 92 transitions. Word has length 94 [2024-11-28 02:15:26,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:15:26,551 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 92 transitions. [2024-11-28 02:15:26,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 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 02:15:26,552 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 92 transitions. [2024-11-28 02:15:26,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-28 02:15:26,553 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:15:26,553 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:15:26,567 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 02:15:26,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:15:26,757 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:15:26,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:15:26,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1912880312, now seen corresponding path program 1 times [2024-11-28 02:15:26,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:15:26,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2135593992] [2024-11-28 02:15:26,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:15:26,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:15:26,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:15:26,759 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:15:26,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 02:15:26,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:15:27,001 INFO L256 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 02:15:27,004 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:15:27,075 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-28 02:15:27,075 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:15:27,075 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:15:27,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135593992] [2024-11-28 02:15:27,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135593992] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:15:27,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:15:27,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 02:15:27,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22053575] [2024-11-28 02:15:27,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:15:27,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:15:27,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:15:27,077 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:15:27,077 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:15:27,078 INFO L87 Difference]: Start difference. First operand 71 states and 92 transitions. Second operand has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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 02:15:27,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:15:27,157 INFO L93 Difference]: Finished difference Result 121 states and 158 transitions. [2024-11-28 02:15:27,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:15:27,158 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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 96 [2024-11-28 02:15:27,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:15:27,159 INFO L225 Difference]: With dead ends: 121 [2024-11-28 02:15:27,159 INFO L226 Difference]: Without dead ends: 71 [2024-11-28 02:15:27,160 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 90 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 02:15:27,160 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 0 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 446 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 02:15:27,161 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 446 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:15:27,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-28 02:15:27,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2024-11-28 02:15:27,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 51 states have internal predecessors, (61), 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 02:15:27,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 88 transitions. [2024-11-28 02:15:27,170 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 88 transitions. Word has length 96 [2024-11-28 02:15:27,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:15:27,171 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 88 transitions. [2024-11-28 02:15:27,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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 02:15:27,171 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 88 transitions. [2024-11-28 02:15:27,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-28 02:15:27,172 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:15:27,172 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, 1, 1, 1, 1, 1, 1, 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 02:15:27,186 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 02:15:27,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:15:27,376 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:15:27,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:15:27,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1760900858, now seen corresponding path program 1 times [2024-11-28 02:15:27,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:15:27,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [504810774] [2024-11-28 02:15:27,378 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:15:27,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:15:27,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:15:27,379 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:15:27,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 02:15:27,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:15:27,612 INFO L256 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 02:15:27,616 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:15:27,691 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 02:15:27,695 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 02:15:32,260 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1| (_ BitVec 64)) (|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1| (_ BitVec 64))) (not (= (_ bv0 64) (select (select |c_#memory_$Pointer$#1.base| |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1|) |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1|)))) (exists ((|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1| (_ BitVec 64)) (|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1| (_ BitVec 64))) (not (= (select (select |c_#memory_$Pointer$#1.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|) (_ bv0 64))))) is different from true [2024-11-28 02:15:32,800 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 02:15:32,800 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:15:33,480 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-28 02:15:33,480 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:15:33,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504810774] [2024-11-28 02:15:33,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504810774] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:15:33,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:15:33,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 17 [2024-11-28 02:15:33,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209115817] [2024-11-28 02:15:33,481 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:15:33,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 02:15:33,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:15:33,482 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 02:15:33,483 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=199, Unknown=1, NotChecked=28, Total=272 [2024-11-28 02:15:33,483 INFO L87 Difference]: Start difference. First operand 69 states and 88 transitions. Second operand has 17 states, 17 states have (on average 6.235294117647059) internal successors, (106), 17 states have internal predecessors, (106), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2024-11-28 02:15:35,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:15:35,488 INFO L93 Difference]: Finished difference Result 168 states and 230 transitions. [2024-11-28 02:15:35,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 02:15:35,490 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.235294117647059) internal successors, (106), 17 states have internal predecessors, (106), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 98 [2024-11-28 02:15:35,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:15:35,492 INFO L225 Difference]: With dead ends: 168 [2024-11-28 02:15:35,492 INFO L226 Difference]: Without dead ends: 113 [2024-11-28 02:15:35,493 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 182 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=76, Invalid=347, Unknown=1, NotChecked=38, Total=462 [2024-11-28 02:15:35,494 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 60 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 269 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:15:35,494 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 823 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 460 Invalid, 1 Unknown, 269 Unchecked, 1.6s Time] [2024-11-28 02:15:35,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-28 02:15:35,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 87. [2024-11-28 02:15:35,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 65 states have (on average 1.2769230769230768) internal successors, (83), 67 states have internal predecessors, (83), 14 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (16), 13 states have call predecessors, (16), 13 states have call successors, (16) [2024-11-28 02:15:35,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 113 transitions. [2024-11-28 02:15:35,508 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 113 transitions. Word has length 98 [2024-11-28 02:15:35,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:15:35,509 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 113 transitions. [2024-11-28 02:15:35,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.235294117647059) internal successors, (106), 17 states have internal predecessors, (106), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2024-11-28 02:15:35,509 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 113 transitions. [2024-11-28 02:15:35,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-28 02:15:35,510 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:15:35,510 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:15:35,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-28 02:15:35,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:15:35,711 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:15:35,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:15:35,711 INFO L85 PathProgramCache]: Analyzing trace with hash -28380858, now seen corresponding path program 1 times [2024-11-28 02:15:35,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:15:35,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2004486103] [2024-11-28 02:15:35,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:15:35,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:15:35,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:15:35,714 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:15:35,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 02:15:35,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:15:35,941 INFO L256 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:15:35,943 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:15:35,981 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-28 02:15:35,981 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:15:35,982 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:15:35,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004486103] [2024-11-28 02:15:35,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004486103] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:15:35,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:15:35,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:15:35,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233000941] [2024-11-28 02:15:35,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:15:35,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:15:35,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:15:35,984 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:15:35,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:15:35,984 INFO L87 Difference]: Start difference. First operand 87 states and 113 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 02:15:36,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:15:36,029 INFO L93 Difference]: Finished difference Result 161 states and 216 transitions. [2024-11-28 02:15:36,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:15:36,030 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 98 [2024-11-28 02:15:36,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:15:36,031 INFO L225 Difference]: With dead ends: 161 [2024-11-28 02:15:36,031 INFO L226 Difference]: Without dead ends: 88 [2024-11-28 02:15:36,032 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 95 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 02:15:36,032 INFO L435 NwaCegarLoop]: 82 mSDtfsCounter, 0 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 234 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 02:15:36,033 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 234 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:15:36,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-28 02:15:36,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2024-11-28 02:15:36,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 65 states have (on average 1.2615384615384615) internal successors, (82), 67 states have internal predecessors, (82), 14 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (16), 13 states have call predecessors, (16), 13 states have call successors, (16) [2024-11-28 02:15:36,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 112 transitions. [2024-11-28 02:15:36,046 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 112 transitions. Word has length 98 [2024-11-28 02:15:36,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:15:36,046 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 112 transitions. [2024-11-28 02:15:36,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 02:15:36,047 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 112 transitions. [2024-11-28 02:15:36,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-28 02:15:36,048 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:15:36,048 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:15:36,065 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 02:15:36,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:15:36,252 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:15:36,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:15:36,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1291856262, now seen corresponding path program 1 times [2024-11-28 02:15:36,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:15:36,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [441922540] [2024-11-28 02:15:36,254 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:15:36,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:15:36,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:15:36,258 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:15:36,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 02:15:36,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:15:36,511 INFO L256 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:15:36,512 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:15:36,534 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 02:15:36,534 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:15:36,535 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:15:36,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441922540] [2024-11-28 02:15:36,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441922540] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:15:36,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:15:36,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:15:36,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139358811] [2024-11-28 02:15:36,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:15:36,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:15:36,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:15:36,537 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:15:36,537 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:15:36,537 INFO L87 Difference]: Start difference. First operand 87 states and 112 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, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 02:15:36,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:15:36,589 INFO L93 Difference]: Finished difference Result 160 states and 215 transitions. [2024-11-28 02:15:36,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:15:36,590 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, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 98 [2024-11-28 02:15:36,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:15:36,591 INFO L225 Difference]: With dead ends: 160 [2024-11-28 02:15:36,591 INFO L226 Difference]: Without dead ends: 87 [2024-11-28 02:15:36,592 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 95 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 02:15:36,592 INFO L435 NwaCegarLoop]: 82 mSDtfsCounter, 0 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 235 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 02:15:36,593 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 235 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:15:36,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-28 02:15:36,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 84. [2024-11-28 02:15:36,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 62 states have (on average 1.2419354838709677) internal successors, (77), 64 states have internal predecessors, (77), 14 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (16), 13 states have call predecessors, (16), 13 states have call successors, (16) [2024-11-28 02:15:36,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 107 transitions. [2024-11-28 02:15:36,607 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 107 transitions. Word has length 98 [2024-11-28 02:15:36,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:15:36,607 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 107 transitions. [2024-11-28 02:15:36,607 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, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 02:15:36,608 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 107 transitions. [2024-11-28 02:15:36,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-28 02:15:36,609 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:15:36,609 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, 1, 1, 1, 1, 1, 1, 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 02:15:36,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-28 02:15:36,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:15:36,810 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:15:36,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:15:36,811 INFO L85 PathProgramCache]: Analyzing trace with hash 2049883426, now seen corresponding path program 1 times [2024-11-28 02:15:36,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:15:36,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [96178821] [2024-11-28 02:15:36,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:15:36,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:15:36,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:15:36,814 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:15:36,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 02:15:37,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:15:37,074 INFO L256 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 02:15:37,079 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:15:37,170 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 02:15:37,174 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 02:15:39,845 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 35 proven. 25 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 02:15:39,845 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:15:41,370 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 10 proven. 33 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-28 02:15:41,370 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:15:41,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96178821] [2024-11-28 02:15:41,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96178821] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:15:41,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:15:41,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 21 [2024-11-28 02:15:41,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388789911] [2024-11-28 02:15:41,370 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:15:41,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 02:15:41,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:15:41,372 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 02:15:41,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2024-11-28 02:15:41,373 INFO L87 Difference]: Start difference. First operand 84 states and 107 transitions. Second operand has 21 states, 21 states have (on average 6.0) internal successors, (126), 19 states have internal predecessors, (126), 10 states have call successors, (19), 4 states have call predecessors, (19), 6 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18) [2024-11-28 02:15:45,927 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 02:15:50,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:15:54,313 WARN L539 Checker$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 02:15:58,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:16:02,835 WARN L539 Checker$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 02:16:05,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:16:05,325 INFO L93 Difference]: Finished difference Result 202 states and 254 transitions. [2024-11-28 02:16:05,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 02:16:05,326 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.0) internal successors, (126), 19 states have internal predecessors, (126), 10 states have call successors, (19), 4 states have call predecessors, (19), 6 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18) Word has length 100 [2024-11-28 02:16:05,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:16:05,330 INFO L225 Difference]: With dead ends: 202 [2024-11-28 02:16:05,330 INFO L226 Difference]: Without dead ends: 130 [2024-11-28 02:16:05,331 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 176 SyntacticMatches, 7 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=146, Invalid=666, Unknown=0, NotChecked=0, Total=812 [2024-11-28 02:16:05,331 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 87 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 38 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:16:05,332 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 614 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 395 Invalid, 5 Unknown, 0 Unchecked, 23.2s Time] [2024-11-28 02:16:05,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-28 02:16:05,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 125. [2024-11-28 02:16:05,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 97 states have (on average 1.2164948453608246) internal successors, (118), 99 states have internal predecessors, (118), 16 states have call successors, (16), 10 states have call predecessors, (16), 11 states have return successors, (19), 15 states have call predecessors, (19), 15 states have call successors, (19) [2024-11-28 02:16:05,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 153 transitions. [2024-11-28 02:16:05,355 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 153 transitions. Word has length 100 [2024-11-28 02:16:05,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:16:05,356 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 153 transitions. [2024-11-28 02:16:05,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.0) internal successors, (126), 19 states have internal predecessors, (126), 10 states have call successors, (19), 4 states have call predecessors, (19), 6 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18) [2024-11-28 02:16:05,356 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 153 transitions. [2024-11-28 02:16:05,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-28 02:16:05,358 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:16:05,358 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, 1, 1, 1, 1, 1, 1, 1, 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 02:16:05,374 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 02:16:05,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:16:05,559 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:16:05,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:16:05,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1240536800, now seen corresponding path program 1 times [2024-11-28 02:16:05,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:16:05,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [88649539] [2024-11-28 02:16:05,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:16:05,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:16:05,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:16:05,562 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:16:05,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 02:16:05,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:16:05,845 INFO L256 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 02:16:05,849 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:16:06,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2024-11-28 02:16:06,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-28 02:16:08,511 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-28 02:16:08,511 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:16:08,511 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:16:08,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88649539] [2024-11-28 02:16:08,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88649539] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:16:08,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:16:08,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 02:16:08,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875668786] [2024-11-28 02:16:08,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:16:08,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:16:08,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:16:08,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:16:08,513 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:16:08,513 INFO L87 Difference]: Start difference. First operand 125 states and 153 transitions. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-28 02:16:11,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:16:11,038 INFO L93 Difference]: Finished difference Result 302 states and 375 transitions. [2024-11-28 02:16:11,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 02:16:11,040 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 100 [2024-11-28 02:16:11,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:16:11,041 INFO L225 Difference]: With dead ends: 302 [2024-11-28 02:16:11,041 INFO L226 Difference]: Without dead ends: 239 [2024-11-28 02:16:11,042 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 82 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 02:16:11,045 INFO L435 NwaCegarLoop]: 60 mSDtfsCounter, 47 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:16:11,046 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 426 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-28 02:16:11,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2024-11-28 02:16:11,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 234. [2024-11-28 02:16:11,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 183 states have (on average 1.2240437158469946) internal successors, (224), 187 states have internal predecessors, (224), 30 states have call successors, (30), 18 states have call predecessors, (30), 20 states have return successors, (36), 28 states have call predecessors, (36), 28 states have call successors, (36) [2024-11-28 02:16:11,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 290 transitions. [2024-11-28 02:16:11,082 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 290 transitions. Word has length 100 [2024-11-28 02:16:11,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:16:11,084 INFO L471 AbstractCegarLoop]: Abstraction has 234 states and 290 transitions. [2024-11-28 02:16:11,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-28 02:16:11,085 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 290 transitions. [2024-11-28 02:16:11,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-28 02:16:11,086 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:16:11,087 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:11,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-28 02:16:11,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:16:11,290 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:16:11,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:16:11,291 INFO L85 PathProgramCache]: Analyzing trace with hash 847509790, now seen corresponding path program 1 times [2024-11-28 02:16:11,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:16:11,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [53298428] [2024-11-28 02:16:11,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:16:11,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:16:11,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:16:11,294 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:16:11,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 02:16:11,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:16:11,530 INFO L256 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-28 02:16:11,535 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:16:11,668 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 02:16:11,679 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 02:16:15,300 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 32 proven. 28 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 02:16:15,300 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:16:17,686 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 10 proven. 33 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-28 02:16:17,686 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:16:17,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53298428] [2024-11-28 02:16:17,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53298428] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:16:17,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:16:17,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 25 [2024-11-28 02:16:17,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314742220] [2024-11-28 02:16:17,686 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:16:17,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-28 02:16:17,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:16:17,688 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-28 02:16:17,688 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2024-11-28 02:16:17,689 INFO L87 Difference]: Start difference. First operand 234 states and 290 transitions. Second operand has 25 states, 25 states have (on average 4.92) internal successors, (123), 23 states have internal predecessors, (123), 10 states have call successors, (19), 4 states have call predecessors, (19), 6 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18) [2024-11-28 02:16:21,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:16:25,901 WARN L539 Checker$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 02:16:30,173 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 02:16:33,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:16:33,597 INFO L93 Difference]: Finished difference Result 356 states and 448 transitions. [2024-11-28 02:16:33,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 02:16:33,598 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 23 states have internal predecessors, (123), 10 states have call successors, (19), 4 states have call predecessors, (19), 6 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18) Word has length 100 [2024-11-28 02:16:33,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:16:33,600 INFO L225 Difference]: With dead ends: 356 [2024-11-28 02:16:33,600 INFO L226 Difference]: Without dead ends: 238 [2024-11-28 02:16:33,601 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 170 SyntacticMatches, 7 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=183, Invalid=873, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 02:16:33,602 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 99 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 47 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:16:33,602 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 860 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 551 Invalid, 3 Unknown, 0 Unchecked, 14.9s Time] [2024-11-28 02:16:33,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-11-28 02:16:33,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 234. [2024-11-28 02:16:33,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 183 states have (on average 1.2131147540983607) internal successors, (222), 187 states have internal predecessors, (222), 30 states have call successors, (30), 18 states have call predecessors, (30), 20 states have return successors, (36), 28 states have call predecessors, (36), 28 states have call successors, (36) [2024-11-28 02:16:33,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 288 transitions. [2024-11-28 02:16:33,652 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 288 transitions. Word has length 100 [2024-11-28 02:16:33,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:16:33,655 INFO L471 AbstractCegarLoop]: Abstraction has 234 states and 288 transitions. [2024-11-28 02:16:33,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 23 states have internal predecessors, (123), 10 states have call successors, (19), 4 states have call predecessors, (19), 6 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18) [2024-11-28 02:16:33,655 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 288 transitions. [2024-11-28 02:16:33,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-28 02:16:33,659 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:16:33,659 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:33,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-28 02:16:33,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:16:33,860 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:16:33,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:16:33,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1105675228, now seen corresponding path program 1 times [2024-11-28 02:16:33,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:16:33,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [801327533] [2024-11-28 02:16:33,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:16:33,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:16:33,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:16:33,863 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:16:33,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 02:16:34,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:16:34,087 INFO L256 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-28 02:16:34,090 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:16:34,199 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 02:16:36,571 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 28 proven. 34 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 02:16:36,571 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:16:38,963 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 02:16:39,182 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 10 proven. 35 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 02:16:39,182 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:16:39,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801327533] [2024-11-28 02:16:39,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801327533] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:16:39,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:16:39,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 29 [2024-11-28 02:16:39,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817935620] [2024-11-28 02:16:39,184 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:16:39,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-28 02:16:39,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:16:39,185 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-28 02:16:39,186 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=710, Unknown=0, NotChecked=0, Total=812 [2024-11-28 02:16:39,186 INFO L87 Difference]: Start difference. First operand 234 states and 288 transitions. Second operand has 29 states, 29 states have (on average 4.482758620689655) internal successors, (130), 27 states have internal predecessors, (130), 13 states have call successors, (19), 3 states have call predecessors, (19), 6 states have return successors, (18), 11 states have call predecessors, (18), 12 states have call successors, (18) [2024-11-28 02:16:47,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:16:47,704 INFO L93 Difference]: Finished difference Result 592 states and 742 transitions. [2024-11-28 02:16:47,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 02:16:47,705 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.482758620689655) internal successors, (130), 27 states have internal predecessors, (130), 13 states have call successors, (19), 3 states have call predecessors, (19), 6 states have return successors, (18), 11 states have call predecessors, (18), 12 states have call successors, (18) Word has length 100 [2024-11-28 02:16:47,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:16:47,709 INFO L225 Difference]: With dead ends: 592 [2024-11-28 02:16:47,709 INFO L226 Difference]: Without dead ends: 460 [2024-11-28 02:16:47,711 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 174 SyntacticMatches, 6 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=267, Invalid=1539, Unknown=0, NotChecked=0, Total=1806 [2024-11-28 02:16:47,711 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 189 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 1198 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 1236 SdHoareTripleChecker+Invalid, 1234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:16:47,711 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 1236 Invalid, 1234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1198 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2024-11-28 02:16:47,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2024-11-28 02:16:47,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 394. [2024-11-28 02:16:47,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 305 states have (on average 1.2163934426229508) internal successors, (371), 315 states have internal predecessors, (371), 52 states have call successors, (52), 28 states have call predecessors, (52), 36 states have return successors, (70), 50 states have call predecessors, (70), 48 states have call successors, (70) [2024-11-28 02:16:47,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 493 transitions. [2024-11-28 02:16:47,796 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 493 transitions. Word has length 100 [2024-11-28 02:16:47,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:16:47,796 INFO L471 AbstractCegarLoop]: Abstraction has 394 states and 493 transitions. [2024-11-28 02:16:47,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.482758620689655) internal successors, (130), 27 states have internal predecessors, (130), 13 states have call successors, (19), 3 states have call predecessors, (19), 6 states have return successors, (18), 11 states have call predecessors, (18), 12 states have call successors, (18) [2024-11-28 02:16:47,797 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 493 transitions. [2024-11-28 02:16:47,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-28 02:16:47,799 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:16:47,799 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:47,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-28 02:16:47,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:16:48,000 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:16:48,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:16:48,000 INFO L85 PathProgramCache]: Analyzing trace with hash 94557978, now seen corresponding path program 1 times [2024-11-28 02:16:48,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:16:48,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [152511745] [2024-11-28 02:16:48,001 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:16:48,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:16:48,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:16:48,002 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:16:48,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 02:16:48,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:16:48,234 INFO L256 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 02:16:48,236 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:16:48,413 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-28 02:16:48,413 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:16:48,413 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:16:48,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152511745] [2024-11-28 02:16:48,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152511745] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:16:48,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:16:48,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:16:48,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307743890] [2024-11-28 02:16:48,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:16:48,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:16:48,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:16:48,415 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:16:48,415 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:16:48,415 INFO L87 Difference]: Start difference. First operand 394 states and 493 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 02:16:48,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:16:48,694 INFO L93 Difference]: Finished difference Result 847 states and 1087 transitions. [2024-11-28 02:16:48,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:16:48,695 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 100 [2024-11-28 02:16:48,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:16:48,699 INFO L225 Difference]: With dead ends: 847 [2024-11-28 02:16:48,699 INFO L226 Difference]: Without dead ends: 381 [2024-11-28 02:16:48,701 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 95 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 02:16:48,701 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 21 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:16:48,702 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 398 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:16:48,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2024-11-28 02:16:48,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2024-11-28 02:16:48,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 292 states have (on average 1.1986301369863013) internal successors, (350), 302 states have internal predecessors, (350), 52 states have call successors, (52), 28 states have call predecessors, (52), 36 states have return successors, (70), 50 states have call predecessors, (70), 48 states have call successors, (70) [2024-11-28 02:16:48,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 472 transitions. [2024-11-28 02:16:48,768 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 472 transitions. Word has length 100 [2024-11-28 02:16:48,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:16:48,768 INFO L471 AbstractCegarLoop]: Abstraction has 381 states and 472 transitions. [2024-11-28 02:16:48,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 02:16:48,769 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 472 transitions. [2024-11-28 02:16:48,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-28 02:16:48,770 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:16:48,771 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:48,783 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 02:16:48,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:16:48,971 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:16:48,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:16:48,972 INFO L85 PathProgramCache]: Analyzing trace with hash 739798684, now seen corresponding path program 1 times [2024-11-28 02:16:48,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:16:48,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [582369376] [2024-11-28 02:16:48,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:16:48,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:16:48,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:16:48,974 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:16:48,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 02:16:49,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:16:49,229 INFO L256 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 02:16:49,232 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:16:49,684 INFO L349 Elim1Store]: treesize reduction 50, result has 41.2 percent of original size [2024-11-28 02:16:49,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 60 treesize of output 104 [2024-11-28 02:16:49,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2024-11-28 02:16:49,735 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:16:49,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2024-11-28 02:16:49,775 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 26 [2024-11-28 02:16:56,216 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-28 02:16:56,216 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:16:56,216 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:16:56,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582369376] [2024-11-28 02:16:56,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582369376] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:16:56,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:16:56,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 02:16:56,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115639622] [2024-11-28 02:16:56,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:16:56,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:16:56,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:16:56,218 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:16:56,218 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:16:56,218 INFO L87 Difference]: Start difference. First operand 381 states and 472 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-28 02:17:02,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:17:02,232 INFO L93 Difference]: Finished difference Result 510 states and 630 transitions. [2024-11-28 02:17:02,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 02:17:02,233 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 102 [2024-11-28 02:17:02,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:17:02,235 INFO L225 Difference]: With dead ends: 510 [2024-11-28 02:17:02,236 INFO L226 Difference]: Without dead ends: 385 [2024-11-28 02:17:02,237 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 84 SyntacticMatches, 8 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:17:02,237 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 29 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 14 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:17:02,237 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 885 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 358 Invalid, 4 Unknown, 0 Unchecked, 5.3s Time] [2024-11-28 02:17:02,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2024-11-28 02:17:02,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 198. [2024-11-28 02:17:02,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 151 states have (on average 1.185430463576159) internal successors, (179), 156 states have internal predecessors, (179), 27 states have call successors, (27), 15 states have call predecessors, (27), 19 states have return successors, (36), 26 states have call predecessors, (36), 25 states have call successors, (36) [2024-11-28 02:17:02,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 242 transitions. [2024-11-28 02:17:02,318 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 242 transitions. Word has length 102 [2024-11-28 02:17:02,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:17:02,318 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 242 transitions. [2024-11-28 02:17:02,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-28 02:17:02,318 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 242 transitions. [2024-11-28 02:17:02,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-28 02:17:02,320 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:17:02,320 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 02:17:02,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 02:17:02,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:17:02,521 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:17:02,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:17:02,521 INFO L85 PathProgramCache]: Analyzing trace with hash -948954101, now seen corresponding path program 1 times [2024-11-28 02:17:02,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:17:02,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2012013179] [2024-11-28 02:17:02,522 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:17:02,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:17:02,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:17:02,524 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:17:02,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f573548e-ca55-4f50-a20e-e03c7a6c50cc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 02:17:02,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:17:02,840 INFO L256 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-28 02:17:02,849 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:17:03,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2024-11-28 02:17:03,169 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 02:17:03,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 8 [2024-11-28 02:17:03,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-28 02:17:13,321 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 51 proven. 40 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 02:17:13,321 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:17:25,875 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:17:25,875 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 5188 treesize of output 4736 [2024-11-28 02:17:29,824 INFO L349 Elim1Store]: treesize reduction 58, result has 65.1 percent of original size [2024-11-28 02:17:29,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 43199 treesize of output 38779 [2024-11-28 02:17:30,494 INFO L224 Elim1Store]: Index analysis took 188 ms [2024-11-28 02:17:32,029 INFO L349 Elim1Store]: treesize reduction 51, result has 68.3 percent of original size [2024-11-28 02:17:32,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 2806 treesize of output 2657 [2024-11-28 02:17:33,192 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:17:33,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 2420 treesize of output 2348 [2024-11-28 02:19:24,509 WARN L286 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:20:45,541 WARN L286 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:20:54,299 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:20:54,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 164 treesize of output 154 [2024-11-28 02:20:54,611 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-28 02:20:54,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2024-11-28 02:20:55,078 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 02:20:55,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2024-11-28 02:20:55,148 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 02:20:56,098 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 30 proven. 43 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-28 02:20:56,098 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:20:56,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012013179] [2024-11-28 02:20:56,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012013179] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:20:56,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:20:56,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 20] total 42 [2024-11-28 02:20:56,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256350634] [2024-11-28 02:20:56,098 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:20:56,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-28 02:20:56,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:20:56,100 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-28 02:20:56,101 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1560, Unknown=1, NotChecked=0, Total=1722 [2024-11-28 02:20:56,101 INFO L87 Difference]: Start difference. First operand 198 states and 242 transitions. Second operand has 42 states, 42 states have (on average 3.8333333333333335) internal successors, (161), 38 states have internal predecessors, (161), 15 states have call successors, (21), 4 states have call predecessors, (21), 10 states have return successors, (20), 13 states have call predecessors, (20), 14 states have call successors, (20)