./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_front_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_front_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d60183102582204ad3b2c5c2967c5e39411556c79eb47cc4f179f5b1b7f07a77 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 22:51:42,331 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 22:51:42,406 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-23 22:51:42,412 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 22:51:42,412 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 22:51:42,441 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 22:51:42,442 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 22:51:42,442 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 22:51:42,443 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 22:51:42,443 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 22:51:42,443 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 22:51:42,443 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 22:51:42,444 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 22:51:42,444 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 22:51:42,444 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 22:51:42,445 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 22:51:42,445 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 22:51:42,445 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 22:51:42,445 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 22:51:42,445 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 22:51:42,445 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 22:51:42,446 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 22:51:42,446 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 22:51:42,446 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 22:51:42,446 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 22:51:42,446 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 22:51:42,446 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:51:42,446 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:51:42,447 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:51:42,447 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:51:42,447 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 22:51:42,447 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:51:42,447 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:51:42,447 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:51:42,447 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:51:42,447 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 22:51:42,447 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 22:51:42,448 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 22:51:42,448 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 22:51:42,448 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 22:51:42,448 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 22:51:42,448 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 22:51:42,448 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 22:51:42,448 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 22:51:42,448 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 22:51:42,448 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_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d60183102582204ad3b2c5c2967c5e39411556c79eb47cc4f179f5b1b7f07a77 [2024-11-23 22:51:42,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 22:51:42,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 22:51:42,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 22:51:42,814 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 22:51:42,815 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 22:51:42,816 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/aws-c-common/aws_linked_list_front_harness.i [2024-11-23 22:51:46,135 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/data/c76925355/5dcbf7f3dba24d9c8db238255cbb6e3f/FLAG36ac52a84 [2024-11-23 22:51:46,954 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 22:51:46,960 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/sv-benchmarks/c/aws-c-common/aws_linked_list_front_harness.i [2024-11-23 22:51:47,015 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/data/c76925355/5dcbf7f3dba24d9c8db238255cbb6e3f/FLAG36ac52a84 [2024-11-23 22:51:47,034 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/data/c76925355/5dcbf7f3dba24d9c8db238255cbb6e3f [2024-11-23 22:51:47,037 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 22:51:47,039 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 22:51:47,041 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 22:51:47,041 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 22:51:47,051 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 22:51:47,052 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:51:47" (1/1) ... [2024-11-23 22:51:47,054 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@530ae196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:47, skipping insertion in model container [2024-11-23 22:51:47,056 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:51:47" (1/1) ... [2024-11-23 22:51:47,161 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 22:51:47,521 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_389c5704-da44-475b-91a7-3376a417c507/sv-benchmarks/c/aws-c-common/aws_linked_list_front_harness.i[4495,4508] [2024-11-23 22:51:47,529 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_389c5704-da44-475b-91a7-3376a417c507/sv-benchmarks/c/aws-c-common/aws_linked_list_front_harness.i[4555,4568] [2024-11-23 22:51:48,485 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:51:48,486 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:51:48,487 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:51:48,488 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:51:48,489 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:51:48,514 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:51:48,515 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:51:48,518 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:51:48,519 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:51:48,524 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:51:48,527 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:51:48,528 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:51:48,529 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:51:49,255 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_389c5704-da44-475b-91a7-3376a417c507/sv-benchmarks/c/aws-c-common/aws_linked_list_front_harness.i[150660,150673] [2024-11-23 22:51:49,256 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:51:49,272 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 22:51:49,288 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_389c5704-da44-475b-91a7-3376a417c507/sv-benchmarks/c/aws-c-common/aws_linked_list_front_harness.i[4495,4508] [2024-11-23 22:51:49,289 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_389c5704-da44-475b-91a7-3376a417c507/sv-benchmarks/c/aws-c-common/aws_linked_list_front_harness.i[4555,4568] [2024-11-23 22:51:49,353 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:51:49,353 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:51:49,354 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:51:49,354 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:51:49,358 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:51:49,375 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:51:49,380 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:51:49,381 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:51:49,382 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:51:49,383 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:51:49,385 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:51:49,385 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:51:49,385 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:51:49,529 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_389c5704-da44-475b-91a7-3376a417c507/sv-benchmarks/c/aws-c-common/aws_linked_list_front_harness.i[150660,150673] [2024-11-23 22:51:49,529 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:51:49,740 INFO L204 MainTranslator]: Completed translation [2024-11-23 22:51:49,741 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:49 WrapperNode [2024-11-23 22:51:49,741 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 22:51:49,742 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 22:51:49,742 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 22:51:49,742 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 22:51:49,749 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:49" (1/1) ... [2024-11-23 22:51:49,814 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:49" (1/1) ... [2024-11-23 22:51:49,900 INFO L138 Inliner]: procedures = 668, calls = 1043, calls flagged for inlining = 51, calls inlined = 5, statements flattened = 133 [2024-11-23 22:51:49,900 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 22:51:49,901 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 22:51:49,901 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 22:51:49,901 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 22:51:49,920 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:49" (1/1) ... [2024-11-23 22:51:49,920 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:49" (1/1) ... [2024-11-23 22:51:49,925 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:49" (1/1) ... [2024-11-23 22:51:49,959 INFO L175 MemorySlicer]: Split 27 memory accesses to 3 slices as follows [2, 5, 20]. 74 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]. [2024-11-23 22:51:49,961 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:49" (1/1) ... [2024-11-23 22:51:49,962 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:49" (1/1) ... [2024-11-23 22:51:49,982 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:49" (1/1) ... [2024-11-23 22:51:49,987 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:49" (1/1) ... [2024-11-23 22:51:49,990 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:49" (1/1) ... [2024-11-23 22:51:49,993 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:49" (1/1) ... [2024-11-23 22:51:49,999 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:49" (1/1) ... [2024-11-23 22:51:50,007 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 22:51:50,008 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 22:51:50,008 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 22:51:50,008 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 22:51:50,009 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:49" (1/1) ... [2024-11-23 22:51:50,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:51:50,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:51:50,057 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 22:51:50,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 22:51:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-23 22:51:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-23 22:51:50,090 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-23 22:51:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2024-11-23 22:51:50,090 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2024-11-23 22:51:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-23 22:51:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2024-11-23 22:51:50,091 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2024-11-23 22:51:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 22:51:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-23 22:51:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-23 22:51:50,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-23 22:51:50,092 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_front [2024-11-23 22:51:50,092 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_front [2024-11-23 22:51:50,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 22:51:50,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 22:51:50,094 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_empty [2024-11-23 22:51:50,095 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_empty [2024-11-23 22:51:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 22:51:50,095 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 22:51:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-23 22:51:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-23 22:51:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-23 22:51:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-23 22:51:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-23 22:51:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-23 22:51:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-23 22:51:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-23 22:51:50,095 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-23 22:51:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2024-11-23 22:51:50,095 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2024-11-23 22:51:50,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 22:51:50,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 22:51:50,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 22:51:50,461 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 22:51:50,464 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 22:51:50,883 INFO L? ?]: Removed 61 outVars from TransFormulas that were not future-live. [2024-11-23 22:51:50,883 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 22:51:50,897 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 22:51:50,897 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 22:51:50,898 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:51:50 BoogieIcfgContainer [2024-11-23 22:51:50,898 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 22:51:50,902 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 22:51:50,902 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 22:51:50,908 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 22:51:50,908 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:51:47" (1/3) ... [2024-11-23 22:51:50,909 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e1c5ba4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:51:50, skipping insertion in model container [2024-11-23 22:51:50,909 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:49" (2/3) ... [2024-11-23 22:51:50,910 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e1c5ba4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:51:50, skipping insertion in model container [2024-11-23 22:51:50,910 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:51:50" (3/3) ... [2024-11-23 22:51:50,912 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_linked_list_front_harness.i [2024-11-23 22:51:50,930 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 22:51:50,932 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_linked_list_front_harness.i that has 9 procedures, 98 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-23 22:51:51,008 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 22:51:51,022 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;@ba6ddaa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 22:51:51,025 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 22:51:51,031 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 64 states have (on average 1.296875) internal successors, (83), 65 states have internal predecessors, (83), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-23 22:51:51,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-23 22:51:51,045 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:51:51,046 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:51:51,047 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:51:51,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:51:51,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1721147975, now seen corresponding path program 1 times [2024-11-23 22:51:51,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:51:51,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780825278] [2024-11-23 22:51:51,066 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:51:51,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:51:51,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:51:51,640 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-23 22:51:51,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:51:51,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780825278] [2024-11-23 22:51:51,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780825278] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:51:51,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203305046] [2024-11-23 22:51:51,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:51:51,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:51:51,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:51:51,654 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:51:51,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 22:51:51,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:51:51,983 INFO L256 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 22:51:51,992 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:51:52,014 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-23 22:51:52,014 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:51:52,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203305046] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:51:52,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:51:52,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-23 22:51:52,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430149073] [2024-11-23 22:51:52,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:51:52,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 22:51:52,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:51:52,049 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 22:51:52,050 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 22:51:52,053 INFO L87 Difference]: Start difference. First operand has 98 states, 64 states have (on average 1.296875) internal successors, (83), 65 states have internal predecessors, (83), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-23 22:51:52,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:51:52,107 INFO L93 Difference]: Finished difference Result 188 states and 271 transitions. [2024-11-23 22:51:52,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 22:51:52,110 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 84 [2024-11-23 22:51:52,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:51:52,119 INFO L225 Difference]: With dead ends: 188 [2024-11-23 22:51:52,119 INFO L226 Difference]: Without dead ends: 93 [2024-11-23 22:51:52,124 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 22:51:52,127 INFO L435 NwaCegarLoop]: 127 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, 127 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 [2024-11-23 22:51:52,128 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:51:52,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-23 22:51:52,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-11-23 22:51:52,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 60 states have (on average 1.25) internal successors, (75), 61 states have internal predecessors, (75), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-23 22:51:52,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 122 transitions. [2024-11-23 22:51:52,186 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 122 transitions. Word has length 84 [2024-11-23 22:51:52,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:51:52,186 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 122 transitions. [2024-11-23 22:51:52,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-23 22:51:52,187 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 122 transitions. [2024-11-23 22:51:52,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-23 22:51:52,191 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:51:52,191 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:51:52,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 22:51:52,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-23 22:51:52,392 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:51:52,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:51:52,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1720045951, now seen corresponding path program 1 times [2024-11-23 22:51:52,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:51:52,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570266357] [2024-11-23 22:51:52,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:51:52,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:51:52,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:51:53,461 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-11-23 22:51:53,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:51:53,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570266357] [2024-11-23 22:51:53,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570266357] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:51:53,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497002204] [2024-11-23 22:51:53,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:51:53,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:51:53,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:51:53,465 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:51:53,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 22:51:53,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:51:53,763 INFO L256 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-23 22:51:53,775 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:51:54,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2024-11-23 22:51:54,136 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 [2024-11-23 22:51:56,544 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 43 proven. 16 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-23 22:51:56,544 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:52:10,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 80 [2024-11-23 22:52:10,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 22:52:10,161 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:52:10,161 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 35 treesize of output 35 [2024-11-23 22:52:10,174 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-23 22:52:10,174 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 25 treesize of output 24 [2024-11-23 22:52:10,179 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 [2024-11-23 22:52:10,191 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 5 treesize of output 3 [2024-11-23 22:52:10,372 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-23 22:52:10,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497002204] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 22:52:10,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-23 22:52:10,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [6, 17] total 34 [2024-11-23 22:52:10,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747874957] [2024-11-23 22:52:10,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:52:10,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-23 22:52:10,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:52:10,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-23 22:52:10,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1012, Unknown=3, NotChecked=0, Total=1122 [2024-11-23 22:52:10,376 INFO L87 Difference]: Start difference. First operand 93 states and 122 transitions. Second operand has 17 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 13 states have internal predecessors, (41), 7 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2024-11-23 22:52:10,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:52:10,979 INFO L93 Difference]: Finished difference Result 168 states and 226 transitions. [2024-11-23 22:52:10,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 22:52:10,980 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 13 states have internal predecessors, (41), 7 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) Word has length 84 [2024-11-23 22:52:10,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:52:10,981 INFO L225 Difference]: With dead ends: 168 [2024-11-23 22:52:10,982 INFO L226 Difference]: Without dead ends: 95 [2024-11-23 22:52:10,983 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 132 SyntacticMatches, 8 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=117, Invalid=1140, Unknown=3, NotChecked=0, Total=1260 [2024-11-23 22:52:10,984 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 8 mSDsluCounter, 963 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 22:52:10,984 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1073 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 22:52:10,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-23 22:52:11,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2024-11-23 22:52:11,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 61 states have (on average 1.2459016393442623) internal successors, (76), 62 states have internal predecessors, (76), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-23 22:52:11,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 123 transitions. [2024-11-23 22:52:11,009 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 123 transitions. Word has length 84 [2024-11-23 22:52:11,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:52:11,010 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 123 transitions. [2024-11-23 22:52:11,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 13 states have internal predecessors, (41), 7 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2024-11-23 22:52:11,010 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 123 transitions. [2024-11-23 22:52:11,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-23 22:52:11,015 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:52:11,015 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:52:11,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-23 22:52:11,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:52:11,216 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:52:11,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:52:11,216 INFO L85 PathProgramCache]: Analyzing trace with hash -640464229, now seen corresponding path program 1 times [2024-11-23 22:52:11,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:52:11,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191855638] [2024-11-23 22:52:11,216 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:52:11,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:52:11,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:52:11,884 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-23 22:52:11,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:52:11,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191855638] [2024-11-23 22:52:11,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191855638] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:52:11,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423682400] [2024-11-23 22:52:11,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:52:11,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:52:11,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:52:11,887 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:52:11,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 22:52:12,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:52:12,143 INFO L256 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-23 22:52:12,157 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:52:12,172 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-23 22:52:12,368 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 [2024-11-23 22:52:12,390 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 [2024-11-23 22:52:12,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 22:52:12,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 22:52:12,541 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 [2024-11-23 22:52:12,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 22:52:12,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 22:52:12,557 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 [2024-11-23 22:52:12,582 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-23 22:52:12,582 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 1 case distinctions, treesize of input 27 treesize of output 24 [2024-11-23 22:52:12,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-23 22:52:12,626 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-23 22:52:12,626 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 1 case distinctions, treesize of input 34 treesize of output 29 [2024-11-23 22:52:12,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 22:52:12,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 22:52:12,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 10 [2024-11-23 22:52:12,716 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-23 22:52:12,717 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 11 treesize of output 11 [2024-11-23 22:52:12,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 22:52:12,881 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 100 treesize of output 87 [2024-11-23 22:52:12,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 22:52:12,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 22:52:12,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 22:52:12,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 75 [2024-11-23 22:52:12,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 25 [2024-11-23 22:52:15,104 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 10 proven. 21 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-23 22:52:15,104 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:52:15,690 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 24)) (.cse2 (+ 16 |c_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset|))) (and (forall ((v_ArrVal_244 Int) (v_ArrVal_246 (Array Int Int))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_246))) (store .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_ArrVal_244))) |c_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base|) .cse2) 0)) (forall ((v_ArrVal_247 Int) (v_ArrVal_245 Int)) (= (select (select (let ((.cse3 (store |c_#memory_$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_245)))) (store .cse3 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse3 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_ArrVal_247))) |c_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base|) .cse2) 0)))) is different from false [2024-11-23 22:52:15,721 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:52:15,721 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 1 case distinctions, treesize of input 89 treesize of output 90 [2024-11-23 22:52:15,913 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-23 22:52:15,915 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-23 22:52:16,034 INFO L349 Elim1Store]: treesize reduction 86, result has 45.2 percent of original size [2024-11-23 22:52:16,035 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 299 treesize of output 286 [2024-11-23 22:52:16,056 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-23 22:52:16,057 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-23 22:52:16,173 INFO L349 Elim1Store]: treesize reduction 86, result has 45.2 percent of original size [2024-11-23 22:52:16,173 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 203 treesize of output 232 [2024-11-23 22:52:16,207 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:52:16,207 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 262 treesize of output 260 [2024-11-23 22:52:16,234 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:52:16,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 296 treesize of output 294 [2024-11-23 22:52:16,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 253 treesize of output 241 [2024-11-23 22:52:16,323 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 265 treesize of output 253 [2024-11-23 22:52:16,436 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 [2024-11-23 22:52:18,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-11-23 22:52:19,211 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:52:19,211 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 526 treesize of output 512 [2024-11-23 22:52:20,371 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:52:20,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 693 treesize of output 631 [2024-11-23 22:52:23,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423682400] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:52:23,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 22:52:23,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 13] total 17 [2024-11-23 22:52:23,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831149820] [2024-11-23 22:52:23,347 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 22:52:23,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-23 22:52:23,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:52:23,348 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-23 22:52:23,349 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=525, Unknown=2, NotChecked=46, Total=650 [2024-11-23 22:52:23,349 INFO L87 Difference]: Start difference. First operand 94 states and 123 transitions. Second operand has 17 states, 16 states have (on average 5.125) internal successors, (82), 15 states have internal predecessors, (82), 7 states have call successors, (23), 5 states have call predecessors, (23), 6 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) [2024-11-23 22:52:25,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:52:25,537 INFO L93 Difference]: Finished difference Result 265 states and 357 transitions. [2024-11-23 22:52:25,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-23 22:52:25,538 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 5.125) internal successors, (82), 15 states have internal predecessors, (82), 7 states have call successors, (23), 5 states have call predecessors, (23), 6 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) Word has length 86 [2024-11-23 22:52:25,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:52:25,541 INFO L225 Difference]: With dead ends: 265 [2024-11-23 22:52:25,542 INFO L226 Difference]: Without dead ends: 187 [2024-11-23 22:52:25,543 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 130 SyntacticMatches, 16 SemanticMatches, 41 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=215, Invalid=1509, Unknown=2, NotChecked=80, Total=1806 [2024-11-23 22:52:25,544 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 251 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-23 22:52:25,544 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 962 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-23 22:52:25,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-11-23 22:52:25,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 181. [2024-11-23 22:52:25,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 117 states have (on average 1.2564102564102564) internal successors, (147), 121 states have internal predecessors, (147), 46 states have call successors, (46), 15 states have call predecessors, (46), 17 states have return successors, (48), 44 states have call predecessors, (48), 44 states have call successors, (48) [2024-11-23 22:52:25,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 241 transitions. [2024-11-23 22:52:25,575 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 241 transitions. Word has length 86 [2024-11-23 22:52:25,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:52:25,575 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 241 transitions. [2024-11-23 22:52:25,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 5.125) internal successors, (82), 15 states have internal predecessors, (82), 7 states have call successors, (23), 5 states have call predecessors, (23), 6 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) [2024-11-23 22:52:25,576 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 241 transitions. [2024-11-23 22:52:25,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-23 22:52:25,577 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:52:25,578 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:52:25,588 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 22:52:25,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:52:25,782 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:52:25,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:52:25,783 INFO L85 PathProgramCache]: Analyzing trace with hash 612158421, now seen corresponding path program 1 times [2024-11-23 22:52:25,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:52:25,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303127478] [2024-11-23 22:52:25,783 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:52:25,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:52:25,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:52:26,171 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-23 22:52:26,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:52:26,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303127478] [2024-11-23 22:52:26,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303127478] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:52:26,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713445471] [2024-11-23 22:52:26,171 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:52:26,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:52:26,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:52:26,174 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:52:26,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 22:52:26,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:52:26,365 INFO L256 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-23 22:52:26,368 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:52:26,500 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-23 22:52:26,500 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:52:26,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713445471] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:52:26,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:52:26,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 15 [2024-11-23 22:52:26,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912419410] [2024-11-23 22:52:26,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:52:26,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 22:52:26,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:52:26,502 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 22:52:26,502 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2024-11-23 22:52:26,502 INFO L87 Difference]: Start difference. First operand 181 states and 241 transitions. Second operand has 9 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-23 22:52:26,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:52:26,870 INFO L93 Difference]: Finished difference Result 342 states and 457 transitions. [2024-11-23 22:52:26,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 22:52:26,871 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 88 [2024-11-23 22:52:26,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:52:26,873 INFO L225 Difference]: With dead ends: 342 [2024-11-23 22:52:26,873 INFO L226 Difference]: Without dead ends: 185 [2024-11-23 22:52:26,874 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2024-11-23 22:52:26,880 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 132 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 22:52:26,880 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 566 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 22:52:26,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-11-23 22:52:26,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 181. [2024-11-23 22:52:26,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 117 states have (on average 1.2393162393162394) internal successors, (145), 121 states have internal predecessors, (145), 46 states have call successors, (46), 15 states have call predecessors, (46), 17 states have return successors, (48), 44 states have call predecessors, (48), 44 states have call successors, (48) [2024-11-23 22:52:26,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 239 transitions. [2024-11-23 22:52:26,918 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 239 transitions. Word has length 88 [2024-11-23 22:52:26,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:52:26,918 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 239 transitions. [2024-11-23 22:52:26,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-23 22:52:26,918 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 239 transitions. [2024-11-23 22:52:26,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-23 22:52:26,920 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:52:26,920 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:52:26,930 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 22:52:27,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:52:27,122 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:52:27,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:52:27,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1374440131, now seen corresponding path program 1 times [2024-11-23 22:52:27,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:52:27,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866833366] [2024-11-23 22:52:27,123 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:52:27,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:52:27,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:52:27,485 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-23 22:52:27,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:52:27,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866833366] [2024-11-23 22:52:27,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866833366] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:52:27,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236061828] [2024-11-23 22:52:27,486 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:52:27,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:52:27,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:52:27,489 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:52:27,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 22:52:27,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:52:27,722 INFO L256 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-23 22:52:27,725 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:52:27,923 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-23 22:52:27,923 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:52:27,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236061828] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:52:27,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:52:27,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 17 [2024-11-23 22:52:27,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821032997] [2024-11-23 22:52:27,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:52:27,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 22:52:27,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:52:27,928 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 22:52:27,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2024-11-23 22:52:27,929 INFO L87 Difference]: Start difference. First operand 181 states and 239 transitions. Second operand has 10 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-23 22:52:28,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:52:28,541 INFO L93 Difference]: Finished difference Result 354 states and 473 transitions. [2024-11-23 22:52:28,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 22:52:28,542 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 90 [2024-11-23 22:52:28,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:52:28,545 INFO L225 Difference]: With dead ends: 354 [2024-11-23 22:52:28,545 INFO L226 Difference]: Without dead ends: 195 [2024-11-23 22:52:28,546 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2024-11-23 22:52:28,547 INFO L435 NwaCegarLoop]: 85 mSDtfsCounter, 146 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 22:52:28,549 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 630 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 22:52:28,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-11-23 22:52:28,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 183. [2024-11-23 22:52:28,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 119 states have (on average 1.2352941176470589) internal successors, (147), 123 states have internal predecessors, (147), 46 states have call successors, (46), 15 states have call predecessors, (46), 17 states have return successors, (48), 44 states have call predecessors, (48), 44 states have call successors, (48) [2024-11-23 22:52:28,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 241 transitions. [2024-11-23 22:52:28,590 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 241 transitions. Word has length 90 [2024-11-23 22:52:28,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:52:28,591 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 241 transitions. [2024-11-23 22:52:28,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-23 22:52:28,591 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 241 transitions. [2024-11-23 22:52:28,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-23 22:52:28,595 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:52:28,595 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:52:28,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-23 22:52:28,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:52:28,796 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:52:28,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:52:28,797 INFO L85 PathProgramCache]: Analyzing trace with hash 535860127, now seen corresponding path program 1 times [2024-11-23 22:52:28,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:52:28,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566127809] [2024-11-23 22:52:28,797 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:52:28,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:52:28,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:52:29,329 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-23 22:52:29,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:52:29,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566127809] [2024-11-23 22:52:29,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566127809] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:52:29,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183309648] [2024-11-23 22:52:29,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:52:29,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:52:29,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:52:29,333 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:52:29,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 22:52:29,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:52:29,582 INFO L256 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-23 22:52:29,585 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:52:29,609 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-23 22:52:29,610 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:52:29,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183309648] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:52:29,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:52:29,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2024-11-23 22:52:29,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902562811] [2024-11-23 22:52:29,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:52:29,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:52:29,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:52:29,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:52:29,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:52:29,612 INFO L87 Difference]: Start difference. First operand 183 states and 241 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-23 22:52:29,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:52:29,661 INFO L93 Difference]: Finished difference Result 344 states and 463 transitions. [2024-11-23 22:52:29,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:52:29,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 91 [2024-11-23 22:52:29,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:52:29,665 INFO L225 Difference]: With dead ends: 344 [2024-11-23 22:52:29,665 INFO L226 Difference]: Without dead ends: 191 [2024-11-23 22:52:29,666 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:52:29,667 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 2 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:52:29,667 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 231 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:52:29,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-11-23 22:52:29,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 185. [2024-11-23 22:52:29,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 121 states have (on average 1.2314049586776858) internal successors, (149), 125 states have internal predecessors, (149), 46 states have call successors, (46), 15 states have call predecessors, (46), 17 states have return successors, (48), 44 states have call predecessors, (48), 44 states have call successors, (48) [2024-11-23 22:52:29,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 243 transitions. [2024-11-23 22:52:29,699 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 243 transitions. Word has length 91 [2024-11-23 22:52:29,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:52:29,699 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 243 transitions. [2024-11-23 22:52:29,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-23 22:52:29,700 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 243 transitions. [2024-11-23 22:52:29,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-23 22:52:29,701 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:52:29,701 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:52:29,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-23 22:52:29,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-23 22:52:29,903 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:52:29,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:52:29,903 INFO L85 PathProgramCache]: Analyzing trace with hash 562926465, now seen corresponding path program 1 times [2024-11-23 22:52:29,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:52:29,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897270836] [2024-11-23 22:52:29,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:52:29,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:52:30,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:52:30,642 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-23 22:52:30,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:52:30,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897270836] [2024-11-23 22:52:30,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897270836] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:52:30,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615610955] [2024-11-23 22:52:30,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:52:30,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:52:30,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:52:30,646 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:52:30,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 22:52:30,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:52:30,922 INFO L256 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-23 22:52:30,925 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:52:31,146 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-23 22:52:31,146 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:52:31,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615610955] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:52:31,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:52:31,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [7] total 15 [2024-11-23 22:52:31,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558507594] [2024-11-23 22:52:31,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:52:31,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 22:52:31,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:52:31,150 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 22:52:31,151 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2024-11-23 22:52:31,151 INFO L87 Difference]: Start difference. First operand 185 states and 243 transitions. Second operand has 13 states, 11 states have (on average 5.818181818181818) internal successors, (64), 10 states have internal predecessors, (64), 5 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2024-11-23 22:52:31,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:52:31,809 INFO L93 Difference]: Finished difference Result 346 states and 457 transitions. [2024-11-23 22:52:31,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 22:52:31,810 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 5.818181818181818) internal successors, (64), 10 states have internal predecessors, (64), 5 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 99 [2024-11-23 22:52:31,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:52:31,812 INFO L225 Difference]: With dead ends: 346 [2024-11-23 22:52:31,813 INFO L226 Difference]: Without dead ends: 191 [2024-11-23 22:52:31,814 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2024-11-23 22:52:31,814 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 108 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 22:52:31,815 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 948 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 22:52:31,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-11-23 22:52:31,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 187. [2024-11-23 22:52:31,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 123 states have (on average 1.2276422764227641) internal successors, (151), 127 states have internal predecessors, (151), 46 states have call successors, (46), 15 states have call predecessors, (46), 17 states have return successors, (48), 44 states have call predecessors, (48), 44 states have call successors, (48) [2024-11-23 22:52:31,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 245 transitions. [2024-11-23 22:52:31,848 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 245 transitions. Word has length 99 [2024-11-23 22:52:31,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:52:31,848 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 245 transitions. [2024-11-23 22:52:31,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 5.818181818181818) internal successors, (64), 10 states have internal predecessors, (64), 5 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2024-11-23 22:52:31,849 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 245 transitions. [2024-11-23 22:52:31,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-23 22:52:31,850 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:52:31,850 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:52:31,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-23 22:52:32,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-23 22:52:32,054 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:52:32,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:52:32,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1307170671, now seen corresponding path program 1 times [2024-11-23 22:52:32,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:52:32,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093937315] [2024-11-23 22:52:32,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:52:32,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:52:32,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:52:32,665 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-23 22:52:32,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:52:32,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093937315] [2024-11-23 22:52:32,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093937315] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:52:32,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165308817] [2024-11-23 22:52:32,665 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:52:32,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:52:32,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:52:32,669 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:52:32,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 22:52:32,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:52:32,918 INFO L256 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-23 22:52:32,922 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:52:32,993 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 [2024-11-23 22:52:32,997 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 [2024-11-23 22:52:34,308 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 43 proven. 10 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-23 22:52:34,308 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:52:35,104 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-23 22:52:35,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165308817] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:52:35,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:52:35,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 17, 12] total 32 [2024-11-23 22:52:35,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629071233] [2024-11-23 22:52:35,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:52:35,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-23 22:52:35,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:52:35,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-23 22:52:35,106 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=896, Unknown=0, NotChecked=0, Total=992 [2024-11-23 22:52:35,107 INFO L87 Difference]: Start difference. First operand 187 states and 245 transitions. Second operand has 32 states, 31 states have (on average 4.096774193548387) internal successors, (127), 31 states have internal predecessors, (127), 11 states have call successors, (30), 4 states have call predecessors, (30), 6 states have return successors, (28), 10 states have call predecessors, (28), 11 states have call successors, (28) [2024-11-23 22:52:38,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:52:38,887 INFO L93 Difference]: Finished difference Result 676 states and 924 transitions. [2024-11-23 22:52:38,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-23 22:52:38,888 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 4.096774193548387) internal successors, (127), 31 states have internal predecessors, (127), 11 states have call successors, (30), 4 states have call predecessors, (30), 6 states have return successors, (28), 10 states have call predecessors, (28), 11 states have call successors, (28) Word has length 101 [2024-11-23 22:52:38,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:52:38,893 INFO L225 Difference]: With dead ends: 676 [2024-11-23 22:52:38,894 INFO L226 Difference]: Without dead ends: 519 [2024-11-23 22:52:38,896 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 182 SyntacticMatches, 6 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 734 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=481, Invalid=3551, Unknown=0, NotChecked=0, Total=4032 [2024-11-23 22:52:38,897 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 319 mSDsluCounter, 2352 mSDsCounter, 0 mSdLazyCounter, 2172 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 2486 SdHoareTripleChecker+Invalid, 2295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-23 22:52:38,898 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 2486 Invalid, 2295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 2172 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-23 22:52:38,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2024-11-23 22:52:38,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 445. [2024-11-23 22:52:38,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 317 states have (on average 1.2839116719242902) internal successors, (407), 323 states have internal predecessors, (407), 92 states have call successors, (92), 29 states have call predecessors, (92), 35 states have return successors, (102), 92 states have call predecessors, (102), 88 states have call successors, (102) [2024-11-23 22:52:38,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 601 transitions. [2024-11-23 22:52:38,977 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 601 transitions. Word has length 101 [2024-11-23 22:52:38,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:52:38,978 INFO L471 AbstractCegarLoop]: Abstraction has 445 states and 601 transitions. [2024-11-23 22:52:38,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 4.096774193548387) internal successors, (127), 31 states have internal predecessors, (127), 11 states have call successors, (30), 4 states have call predecessors, (30), 6 states have return successors, (28), 10 states have call predecessors, (28), 11 states have call successors, (28) [2024-11-23 22:52:38,978 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 601 transitions. [2024-11-23 22:52:38,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-23 22:52:38,980 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:52:38,980 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:52:38,991 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-23 22:52:39,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:52:39,184 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:52:39,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:52:39,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1549493133, now seen corresponding path program 1 times [2024-11-23 22:52:39,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:52:39,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211461472] [2024-11-23 22:52:39,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:52:39,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:52:39,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:52:40,611 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 19 proven. 12 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-23 22:52:40,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:52:40,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211461472] [2024-11-23 22:52:40,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211461472] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:52:40,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269510677] [2024-11-23 22:52:40,611 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:52:40,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:52:40,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:52:40,614 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:52:40,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-23 22:52:40,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:52:40,863 INFO L256 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-11-23 22:52:40,868 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:52:41,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 22:52:41,129 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 32 [2024-11-23 22:52:41,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 22:52:41,137 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 [2024-11-23 22:52:41,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 22:52:41,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 21 [2024-11-23 22:52:41,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2024-11-23 22:52:45,211 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_37| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_37|) (<= (+ 2 (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_37|) 24)) |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_37|))) is different from true [2024-11-23 22:52:49,344 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_38| Int)) (and (<= 2 |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_38|) (<= (+ (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_38|) 24) 2) |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_38|))) is different from true [2024-11-23 22:52:53,497 WARN L873 $PredicateComparison]: unable to prove that (exists ((v_aws_linked_list_front_~list.base_BEFORE_CALL_30 Int)) (and (<= 2 v_aws_linked_list_front_~list.base_BEFORE_CALL_30) (<= (+ 2 (select (select |c_#memory_$Pointer$#2.base| v_aws_linked_list_front_~list.base_BEFORE_CALL_30) 24)) v_aws_linked_list_front_~list.base_BEFORE_CALL_30))) is different from true [2024-11-23 22:53:43,406 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2024-11-23 22:53:43,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 1 [2024-11-23 22:53:43,411 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 52 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 12 not checked. [2024-11-23 22:53:43,411 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:54:10,022 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-23 22:54:10,260 INFO L349 Elim1Store]: treesize reduction 136, result has 57.6 percent of original size [2024-11-23 22:54:10,261 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 7 new quantified variables, introduced 11 case distinctions, treesize of input 823 treesize of output 764 [2024-11-23 22:54:10,510 INFO L349 Elim1Store]: treesize reduction 8, result has 91.0 percent of original size [2024-11-23 22:54:10,510 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 6 new quantified variables, introduced 10 case distinctions, treesize of input 779 treesize of output 813 [2024-11-23 22:54:10,590 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 1180 treesize of output 1140 [2024-11-23 22:54:10,634 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 1140 treesize of output 1100 [2024-11-23 22:54:10,667 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 1100 treesize of output 1080 [2024-11-23 22:54:10,805 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:54:10,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 913 treesize of output 923 [2024-11-23 22:54:15,304 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-23 22:54:15,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 8 [2024-11-23 22:54:15,407 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:54:15,407 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 154 treesize of output 144 [2024-11-23 22:54:15,847 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-23 22:54:15,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269510677] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:54:15,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:54:15,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19, 18] total 50 [2024-11-23 22:54:15,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090502865] [2024-11-23 22:54:15,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:54:15,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-23 22:54:15,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:54:15,850 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-23 22:54:15,850 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=2009, Unknown=16, NotChecked=276, Total=2450 [2024-11-23 22:54:15,850 INFO L87 Difference]: Start difference. First operand 445 states and 601 transitions. Second operand has 50 states, 46 states have (on average 3.608695652173913) internal successors, (166), 42 states have internal predecessors, (166), 17 states have call successors, (38), 10 states have call predecessors, (38), 12 states have return successors, (33), 14 states have call predecessors, (33), 17 states have call successors, (33) [2024-11-23 22:55:42,872 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] [2024-11-23 22:55:51,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-23 22:56:08,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-23 22:56:24,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-23 22:56:49,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-23 22:57:14,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:57:34,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:57:38,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:57:42,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:57:46,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:57:50,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:57:54,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:57:58,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:58:02,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:58:06,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:58:10,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:58:14,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:58:22,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:58:30,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:58:43,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:58:48,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:59:08,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:59:12,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:59:16,119 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] [2024-11-23 22:59:21,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:59:21,554 INFO L93 Difference]: Finished difference Result 1026 states and 1403 transitions. [2024-11-23 22:59:21,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-23 22:59:21,555 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 46 states have (on average 3.608695652173913) internal successors, (166), 42 states have internal predecessors, (166), 17 states have call successors, (38), 10 states have call predecessors, (38), 12 states have return successors, (33), 14 states have call predecessors, (33), 17 states have call successors, (33) Word has length 102 [2024-11-23 22:59:21,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:59:21,560 INFO L225 Difference]: With dead ends: 1026 [2024-11-23 22:59:21,561 INFO L226 Difference]: Without dead ends: 615 [2024-11-23 22:59:21,564 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 172 SyntacticMatches, 6 SemanticMatches, 85 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1527 ImplicationChecksByTransitivity, 292.9s TimeCoverageRelationStatistics Valid=447, Invalid=6490, Unknown=47, NotChecked=498, Total=7482 [2024-11-23 22:59:21,565 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 280 mSDsluCounter, 1996 mSDsCounter, 0 mSdLazyCounter, 2270 mSolverCounterSat, 153 mSolverCounterUnsat, 24 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 99.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 2080 SdHoareTripleChecker+Invalid, 3101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 2270 IncrementalHoareTripleChecker+Invalid, 24 IncrementalHoareTripleChecker+Unknown, 654 IncrementalHoareTripleChecker+Unchecked, 100.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:59:21,565 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 2080 Invalid, 3101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 2270 Invalid, 24 Unknown, 654 Unchecked, 100.1s Time] [2024-11-23 22:59:21,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2024-11-23 22:59:21,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 543. [2024-11-23 22:59:21,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 401 states have (on average 1.2793017456359101) internal successors, (513), 405 states have internal predecessors, (513), 100 states have call successors, (100), 37 states have call predecessors, (100), 41 states have return successors, (110), 100 states have call predecessors, (110), 96 states have call successors, (110) [2024-11-23 22:59:21,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 723 transitions. [2024-11-23 22:59:21,702 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 723 transitions. Word has length 102 [2024-11-23 22:59:21,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:59:21,702 INFO L471 AbstractCegarLoop]: Abstraction has 543 states and 723 transitions. [2024-11-23 22:59:21,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 46 states have (on average 3.608695652173913) internal successors, (166), 42 states have internal predecessors, (166), 17 states have call successors, (38), 10 states have call predecessors, (38), 12 states have return successors, (33), 14 states have call predecessors, (33), 17 states have call successors, (33) [2024-11-23 22:59:21,703 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 723 transitions. [2024-11-23 22:59:21,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-23 22:59:21,705 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:59:21,705 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:59:21,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-23 22:59:21,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:59:21,906 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:59:21,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:59:21,906 INFO L85 PathProgramCache]: Analyzing trace with hash -768056529, now seen corresponding path program 1 times [2024-11-23 22:59:21,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:59:21,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053249714] [2024-11-23 22:59:21,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:21,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:59:21,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:22,109 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-23 22:59:22,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:22,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053249714] [2024-11-23 22:59:22,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053249714] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:59:22,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973004293] [2024-11-23 22:59:22,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:22,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:59:22,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:59:22,114 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:59:22,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-23 22:59:22,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:22,490 INFO L256 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 22:59:22,492 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:59:22,504 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-23 22:59:22,504 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:59:22,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973004293] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:59:22,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:59:22,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-23 22:59:22,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207236491] [2024-11-23 22:59:22,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:59:22,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:59:22,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:59:22,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:59:22,509 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:59:22,509 INFO L87 Difference]: Start difference. First operand 543 states and 723 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:59:22,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:59:22,648 INFO L93 Difference]: Finished difference Result 1010 states and 1371 transitions. [2024-11-23 22:59:22,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:59:22,648 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 101 [2024-11-23 22:59:22,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:59:22,653 INFO L225 Difference]: With dead ends: 1010 [2024-11-23 22:59:22,653 INFO L226 Difference]: Without dead ends: 549 [2024-11-23 22:59:22,656 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:59:22,656 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 0 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 351 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 [2024-11-23 22:59:22,657 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 351 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:59:22,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2024-11-23 22:59:22,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 543. [2024-11-23 22:59:22,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 401 states have (on average 1.259351620947631) internal successors, (505), 405 states have internal predecessors, (505), 100 states have call successors, (100), 37 states have call predecessors, (100), 41 states have return successors, (110), 100 states have call predecessors, (110), 96 states have call successors, (110) [2024-11-23 22:59:22,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 715 transitions. [2024-11-23 22:59:22,790 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 715 transitions. Word has length 101 [2024-11-23 22:59:22,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:59:22,791 INFO L471 AbstractCegarLoop]: Abstraction has 543 states and 715 transitions. [2024-11-23 22:59:22,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:59:22,791 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 715 transitions. [2024-11-23 22:59:22,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-23 22:59:22,795 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:59:22,796 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:59:22,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-23 22:59:22,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-23 22:59:22,996 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:59:22,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:59:22,997 INFO L85 PathProgramCache]: Analyzing trace with hash -600383761, now seen corresponding path program 1 times [2024-11-23 22:59:22,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:59:22,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262744946] [2024-11-23 22:59:22,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:22,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:59:23,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:23,129 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-23 22:59:23,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:23,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262744946] [2024-11-23 22:59:23,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262744946] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:59:23,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281719286] [2024-11-23 22:59:23,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:23,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:59:23,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:59:23,133 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:59:23,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-23 22:59:23,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:23,469 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 22:59:23,472 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:59:23,485 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-23 22:59:23,485 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:59:23,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281719286] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:59:23,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:59:23,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-23 22:59:23,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652160163] [2024-11-23 22:59:23,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:59:23,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:59:23,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:59:23,487 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:59:23,487 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:59:23,488 INFO L87 Difference]: Start difference. First operand 543 states and 715 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:59:23,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:59:23,597 INFO L93 Difference]: Finished difference Result 769 states and 1027 transitions. [2024-11-23 22:59:23,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:59:23,597 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 101 [2024-11-23 22:59:23,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:59:23,601 INFO L225 Difference]: With dead ends: 769 [2024-11-23 22:59:23,601 INFO L226 Difference]: Without dead ends: 282 [2024-11-23 22:59:23,603 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:59:23,604 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 0 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:59:23,605 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 351 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:59:23,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-11-23 22:59:23,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 276. [2024-11-23 22:59:23,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 198 states have (on average 1.196969696969697) internal successors, (237), 200 states have internal predecessors, (237), 54 states have call successors, (54), 23 states have call predecessors, (54), 23 states have return successors, (56), 52 states have call predecessors, (56), 52 states have call successors, (56) [2024-11-23 22:59:23,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 347 transitions. [2024-11-23 22:59:23,656 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 347 transitions. Word has length 101 [2024-11-23 22:59:23,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:59:23,657 INFO L471 AbstractCegarLoop]: Abstraction has 276 states and 347 transitions. [2024-11-23 22:59:23,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 22:59:23,657 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 347 transitions. [2024-11-23 22:59:23,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-23 22:59:23,659 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:59:23,659 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:59:23,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-23 22:59:23,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-23 22:59:23,860 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:59:23,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:59:23,860 INFO L85 PathProgramCache]: Analyzing trace with hash 865593155, now seen corresponding path program 2 times [2024-11-23 22:59:23,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:59:23,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576443546] [2024-11-23 22:59:23,861 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 22:59:23,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:59:23,908 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 22:59:23,908 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:59:24,651 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-23 22:59:24,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:24,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576443546] [2024-11-23 22:59:24,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576443546] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:59:24,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615100029] [2024-11-23 22:59:24,652 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 22:59:24,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:59:24,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:59:24,655 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:59:24,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-23 22:59:24,944 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 22:59:24,944 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:59:24,947 INFO L256 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-23 22:59:24,951 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:59:25,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 32 [2024-11-23 22:59:25,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-23 22:59:25,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-23 22:59:25,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 22:59:25,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2024-11-23 22:59:25,330 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_46| Int)) (let ((.cse1 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_46|))) (let ((.cse0 (select .cse1 24))) (and (not (= 0 .cse0)) (exists ((v_DerPreprocessor_1 (Array Int Int)) (v_DerPreprocessor_2 (Array Int Int))) (= .cse1 (store (select (store (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_46| v_DerPreprocessor_1) .cse0 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_46|) 24 .cse0))))))) (exists ((|v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_46| Int)) (and (not (= |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_46| 0)) (= |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_46| (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_46|) 24))))) is different from true [2024-11-23 22:59:25,742 WARN L873 $PredicateComparison]: unable to prove that (and (or (exists ((|v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_47| Int)) (and (= |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_47| (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_47|) 24)) (not (= |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_47| 0)))) (exists ((|v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_47| Int)) (let ((.cse1 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_47|))) (let ((.cse0 (select .cse1 24))) (and (not (= .cse0 0)) (exists ((v_DerPreprocessor_1 (Array Int Int)) (v_DerPreprocessor_2 (Array Int Int))) (= (store (select (store (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_47| v_DerPreprocessor_1) .cse0 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_47|) 24 .cse0) .cse1))))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_46| Int)) (let ((.cse3 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_46|))) (let ((.cse2 (select .cse3 24))) (and (not (= 0 .cse2)) (exists ((v_DerPreprocessor_1 (Array Int Int)) (v_DerPreprocessor_2 (Array Int Int))) (= .cse3 (store (select (store (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_46| v_DerPreprocessor_1) .cse2 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_46|) 24 .cse2))))))) (exists ((|v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_46| Int)) (and (not (= |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_46| 0)) (= |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_46| (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_46|) 24)))))) is different from true [2024-11-23 22:59:29,179 WARN L873 $PredicateComparison]: unable to prove that (and (or (exists ((|v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_47| Int)) (and (= |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_47| (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_47|) 24)) (not (= |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_47| 0)))) (exists ((|v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_47| Int)) (let ((.cse1 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_47|))) (let ((.cse0 (select .cse1 24))) (and (not (= .cse0 0)) (exists ((v_DerPreprocessor_1 (Array Int Int)) (v_DerPreprocessor_2 (Array Int Int))) (= (store (select (store (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_47| v_DerPreprocessor_1) .cse0 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_47|) 24 .cse0) .cse1))))))) (or (exists ((v_aws_linked_list_front_~list.base_BEFORE_CALL_33 Int)) (let ((.cse3 (select |c_#memory_$Pointer$#2.base| v_aws_linked_list_front_~list.base_BEFORE_CALL_33))) (let ((.cse2 (select .cse3 24))) (and (not (= .cse2 0)) (exists ((v_DerPreprocessor_1 (Array Int Int)) (v_DerPreprocessor_2 (Array Int Int))) (= (store (select (store (store |c_#memory_$Pointer$#2.base| v_aws_linked_list_front_~list.base_BEFORE_CALL_33 v_DerPreprocessor_1) .cse2 v_DerPreprocessor_2) v_aws_linked_list_front_~list.base_BEFORE_CALL_33) 24 .cse2) .cse3)))))) (exists ((v_aws_linked_list_front_~list.base_BEFORE_CALL_33 Int)) (and (= v_aws_linked_list_front_~list.base_BEFORE_CALL_33 (select (select |c_#memory_$Pointer$#2.base| v_aws_linked_list_front_~list.base_BEFORE_CALL_33) 24)) (not (= v_aws_linked_list_front_~list.base_BEFORE_CALL_33 0))))) (or (exists ((v_aws_linked_list_front_~list.base_BEFORE_CALL_34 Int)) (let ((.cse5 (select |c_#memory_$Pointer$#2.base| v_aws_linked_list_front_~list.base_BEFORE_CALL_34))) (let ((.cse4 (select .cse5 24))) (and (exists ((v_DerPreprocessor_1 (Array Int Int)) (v_DerPreprocessor_2 (Array Int Int))) (= (store (select (store (store |c_#memory_$Pointer$#2.base| v_aws_linked_list_front_~list.base_BEFORE_CALL_34 v_DerPreprocessor_1) .cse4 v_DerPreprocessor_2) v_aws_linked_list_front_~list.base_BEFORE_CALL_34) 24 .cse4) .cse5)) (not (= .cse4 0)))))) (exists ((v_aws_linked_list_front_~list.base_BEFORE_CALL_34 Int)) (and (= v_aws_linked_list_front_~list.base_BEFORE_CALL_34 (select (select |c_#memory_$Pointer$#2.base| v_aws_linked_list_front_~list.base_BEFORE_CALL_34) 24)) (not (= v_aws_linked_list_front_~list.base_BEFORE_CALL_34 0))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_46| Int)) (let ((.cse7 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_46|))) (let ((.cse6 (select .cse7 24))) (and (not (= 0 .cse6)) (exists ((v_DerPreprocessor_1 (Array Int Int)) (v_DerPreprocessor_2 (Array Int Int))) (= .cse7 (store (select (store (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_46| v_DerPreprocessor_1) .cse6 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_46|) 24 .cse6))))))) (exists ((|v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_46| Int)) (and (not (= |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_46| 0)) (= |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_46| (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_46|) 24)))))) is different from true [2024-11-23 22:59:29,996 WARN L873 $PredicateComparison]: unable to prove that (and (or (exists ((|v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_47| Int)) (and (= |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_47| (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_47|) 24)) (not (= |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_47| 0)))) (exists ((|v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_47| Int)) (let ((.cse1 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_47|))) (let ((.cse0 (select .cse1 24))) (and (not (= .cse0 0)) (exists ((v_DerPreprocessor_1 (Array Int Int)) (v_DerPreprocessor_2 (Array Int Int))) (= (store (select (store (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_47| v_DerPreprocessor_1) .cse0 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_47|) 24 .cse0) .cse1))))))) (or (exists ((v_aws_linked_list_front_~list.base_BEFORE_CALL_33 Int)) (let ((.cse3 (select |c_#memory_$Pointer$#2.base| v_aws_linked_list_front_~list.base_BEFORE_CALL_33))) (let ((.cse2 (select .cse3 24))) (and (not (= .cse2 0)) (exists ((v_DerPreprocessor_1 (Array Int Int)) (v_DerPreprocessor_2 (Array Int Int))) (= (store (select (store (store |c_#memory_$Pointer$#2.base| v_aws_linked_list_front_~list.base_BEFORE_CALL_33 v_DerPreprocessor_1) .cse2 v_DerPreprocessor_2) v_aws_linked_list_front_~list.base_BEFORE_CALL_33) 24 .cse2) .cse3)))))) (exists ((v_aws_linked_list_front_~list.base_BEFORE_CALL_33 Int)) (and (= v_aws_linked_list_front_~list.base_BEFORE_CALL_33 (select (select |c_#memory_$Pointer$#2.base| v_aws_linked_list_front_~list.base_BEFORE_CALL_33) 24)) (not (= v_aws_linked_list_front_~list.base_BEFORE_CALL_33 0))))) (or (exists ((v_aws_linked_list_front_~list.base_BEFORE_CALL_34 Int)) (let ((.cse5 (select |c_#memory_$Pointer$#2.base| v_aws_linked_list_front_~list.base_BEFORE_CALL_34))) (let ((.cse4 (select .cse5 24))) (and (exists ((v_DerPreprocessor_1 (Array Int Int)) (v_DerPreprocessor_2 (Array Int Int))) (= (store (select (store (store |c_#memory_$Pointer$#2.base| v_aws_linked_list_front_~list.base_BEFORE_CALL_34 v_DerPreprocessor_1) .cse4 v_DerPreprocessor_2) v_aws_linked_list_front_~list.base_BEFORE_CALL_34) 24 .cse4) .cse5)) (not (= .cse4 0)))))) (exists ((v_aws_linked_list_front_~list.base_BEFORE_CALL_34 Int)) (and (= v_aws_linked_list_front_~list.base_BEFORE_CALL_34 (select (select |c_#memory_$Pointer$#2.base| v_aws_linked_list_front_~list.base_BEFORE_CALL_34) 24)) (not (= v_aws_linked_list_front_~list.base_BEFORE_CALL_34 0))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_46| Int)) (let ((.cse7 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_46|))) (let ((.cse6 (select .cse7 24))) (and (not (= 0 .cse6)) (exists ((v_DerPreprocessor_1 (Array Int Int)) (v_DerPreprocessor_2 (Array Int Int))) (= .cse7 (store (select (store (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_46| v_DerPreprocessor_1) .cse6 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_46|) 24 .cse6))))))) (exists ((|v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_46| Int)) (and (not (= |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_46| 0)) (= |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_46| (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_46|) 24))))) (or (exists ((v_aws_linked_list_front_~list.base_BEFORE_CALL_35 Int)) (let ((.cse9 (select |c_#memory_$Pointer$#2.base| v_aws_linked_list_front_~list.base_BEFORE_CALL_35))) (let ((.cse8 (select .cse9 24))) (and (exists ((v_DerPreprocessor_1 (Array Int Int)) (v_DerPreprocessor_2 (Array Int Int))) (= (store (select (store (store |c_#memory_$Pointer$#2.base| v_aws_linked_list_front_~list.base_BEFORE_CALL_35 v_DerPreprocessor_1) .cse8 v_DerPreprocessor_2) v_aws_linked_list_front_~list.base_BEFORE_CALL_35) 24 .cse8) .cse9)) (not (= .cse8 0)))))) (exists ((v_aws_linked_list_front_~list.base_BEFORE_CALL_35 Int)) (and (not (= v_aws_linked_list_front_~list.base_BEFORE_CALL_35 0)) (= v_aws_linked_list_front_~list.base_BEFORE_CALL_35 (select (select |c_#memory_$Pointer$#2.base| v_aws_linked_list_front_~list.base_BEFORE_CALL_35) 24)))))) is different from true [2024-11-23 22:59:32,369 WARN L873 $PredicateComparison]: unable to prove that (and (= c_aws_linked_list_front_~list.offset 0) (or (exists ((|v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_47| Int)) (and (= |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_47| (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_47|) 24)) (not (= |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_47| 0)))) (exists ((|v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_47| Int)) (let ((.cse1 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_47|))) (let ((.cse0 (select .cse1 24))) (and (not (= .cse0 0)) (exists ((v_DerPreprocessor_1 (Array Int Int)) (v_DerPreprocessor_2 (Array Int Int))) (= (store (select (store (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_47| v_DerPreprocessor_1) .cse0 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_47|) 24 .cse0) .cse1))))))) (or (exists ((v_aws_linked_list_front_~list.base_BEFORE_CALL_36 Int)) (let ((.cse3 (select |c_#memory_$Pointer$#2.base| v_aws_linked_list_front_~list.base_BEFORE_CALL_36))) (let ((.cse2 (select .cse3 24))) (and (not (= .cse2 0)) (exists ((v_DerPreprocessor_1 (Array Int Int)) (v_DerPreprocessor_2 (Array Int Int))) (= (store (select (store (store |c_#memory_$Pointer$#2.base| v_aws_linked_list_front_~list.base_BEFORE_CALL_36 v_DerPreprocessor_1) .cse2 v_DerPreprocessor_2) v_aws_linked_list_front_~list.base_BEFORE_CALL_36) 24 .cse2) .cse3)))))) (exists ((v_aws_linked_list_front_~list.base_BEFORE_CALL_36 Int)) (and (= v_aws_linked_list_front_~list.base_BEFORE_CALL_36 (select (select |c_#memory_$Pointer$#2.base| v_aws_linked_list_front_~list.base_BEFORE_CALL_36) 24)) (not (= v_aws_linked_list_front_~list.base_BEFORE_CALL_36 0))))) (or (exists ((v_aws_linked_list_front_~list.base_BEFORE_CALL_33 Int)) (let ((.cse5 (select |c_#memory_$Pointer$#2.base| v_aws_linked_list_front_~list.base_BEFORE_CALL_33))) (let ((.cse4 (select .cse5 24))) (and (not (= .cse4 0)) (exists ((v_DerPreprocessor_1 (Array Int Int)) (v_DerPreprocessor_2 (Array Int Int))) (= (store (select (store (store |c_#memory_$Pointer$#2.base| v_aws_linked_list_front_~list.base_BEFORE_CALL_33 v_DerPreprocessor_1) .cse4 v_DerPreprocessor_2) v_aws_linked_list_front_~list.base_BEFORE_CALL_33) 24 .cse4) .cse5)))))) (exists ((v_aws_linked_list_front_~list.base_BEFORE_CALL_33 Int)) (and (= v_aws_linked_list_front_~list.base_BEFORE_CALL_33 (select (select |c_#memory_$Pointer$#2.base| v_aws_linked_list_front_~list.base_BEFORE_CALL_33) 24)) (not (= v_aws_linked_list_front_~list.base_BEFORE_CALL_33 0))))) (let ((.cse7 (select |c_#memory_$Pointer$#2.base| c_aws_linked_list_front_~list.base))) (let ((.cse6 (select .cse7 24))) (or (and (not (= c_aws_linked_list_front_~list.base 0)) (= c_aws_linked_list_front_~list.base .cse6)) (and (exists ((v_DerPreprocessor_1 (Array Int Int)) (v_DerPreprocessor_2 (Array Int Int))) (= (store (select (store (store |c_#memory_$Pointer$#2.base| c_aws_linked_list_front_~list.base v_DerPreprocessor_1) .cse6 v_DerPreprocessor_2) c_aws_linked_list_front_~list.base) 24 .cse6) .cse7)) (not (= .cse6 0)))))) (or (exists ((v_aws_linked_list_front_~list.base_BEFORE_CALL_34 Int)) (let ((.cse9 (select |c_#memory_$Pointer$#2.base| v_aws_linked_list_front_~list.base_BEFORE_CALL_34))) (let ((.cse8 (select .cse9 24))) (and (exists ((v_DerPreprocessor_1 (Array Int Int)) (v_DerPreprocessor_2 (Array Int Int))) (= (store (select (store (store |c_#memory_$Pointer$#2.base| v_aws_linked_list_front_~list.base_BEFORE_CALL_34 v_DerPreprocessor_1) .cse8 v_DerPreprocessor_2) v_aws_linked_list_front_~list.base_BEFORE_CALL_34) 24 .cse8) .cse9)) (not (= .cse8 0)))))) (exists ((v_aws_linked_list_front_~list.base_BEFORE_CALL_34 Int)) (and (= v_aws_linked_list_front_~list.base_BEFORE_CALL_34 (select (select |c_#memory_$Pointer$#2.base| v_aws_linked_list_front_~list.base_BEFORE_CALL_34) 24)) (not (= v_aws_linked_list_front_~list.base_BEFORE_CALL_34 0))))) (or (exists ((|v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_46| Int)) (let ((.cse11 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_46|))) (let ((.cse10 (select .cse11 24))) (and (not (= 0 .cse10)) (exists ((v_DerPreprocessor_1 (Array Int Int)) (v_DerPreprocessor_2 (Array Int Int))) (= .cse11 (store (select (store (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_46| v_DerPreprocessor_1) .cse10 v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_46|) 24 .cse10))))))) (exists ((|v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_46| Int)) (and (not (= |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_46| 0)) (= |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_46| (select (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_46|) 24))))) (or (exists ((v_aws_linked_list_front_~list.base_BEFORE_CALL_35 Int)) (let ((.cse13 (select |c_#memory_$Pointer$#2.base| v_aws_linked_list_front_~list.base_BEFORE_CALL_35))) (let ((.cse12 (select .cse13 24))) (and (exists ((v_DerPreprocessor_1 (Array Int Int)) (v_DerPreprocessor_2 (Array Int Int))) (= (store (select (store (store |c_#memory_$Pointer$#2.base| v_aws_linked_list_front_~list.base_BEFORE_CALL_35 v_DerPreprocessor_1) .cse12 v_DerPreprocessor_2) v_aws_linked_list_front_~list.base_BEFORE_CALL_35) 24 .cse12) .cse13)) (not (= .cse12 0)))))) (exists ((v_aws_linked_list_front_~list.base_BEFORE_CALL_35 Int)) (and (not (= v_aws_linked_list_front_~list.base_BEFORE_CALL_35 0)) (= v_aws_linked_list_front_~list.base_BEFORE_CALL_35 (select (select |c_#memory_$Pointer$#2.base| v_aws_linked_list_front_~list.base_BEFORE_CALL_35) 24)))))) is different from true [2024-11-23 22:59:36,674 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 45 not checked. [2024-11-23 22:59:36,674 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:59:37,686 INFO L349 Elim1Store]: treesize reduction 19, result has 62.0 percent of original size [2024-11-23 22:59:37,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 198 treesize of output 185 [2024-11-23 22:59:37,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 68 [2024-11-23 22:59:37,718 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:59:37,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 93 [2024-11-23 22:59:37,782 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 [2024-11-23 22:59:37,790 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 [2024-11-23 22:59:38,098 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-23 22:59:38,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615100029] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 22:59:38,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-23 22:59:38,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [8, 24] total 39 [2024-11-23 22:59:38,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646994519] [2024-11-23 22:59:38,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:59:38,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:59:38,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:59:38,100 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:59:38,102 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=939, Unknown=76, NotChecked=340, Total=1482 [2024-11-23 22:59:38,103 INFO L87 Difference]: Start difference. First operand 276 states and 347 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 10 states have internal predecessors, (57), 5 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-23 22:59:39,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:59:39,435 INFO L93 Difference]: Finished difference Result 430 states and 549 transitions. [2024-11-23 22:59:39,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 22:59:39,436 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 10 states have internal predecessors, (57), 5 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 112 [2024-11-23 22:59:39,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:59:39,444 INFO L225 Difference]: With dead ends: 430 [2024-11-23 22:59:39,444 INFO L226 Difference]: Without dead ends: 280 [2024-11-23 22:59:39,450 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=143, Invalid=1126, Unknown=83, NotChecked=370, Total=1722 [2024-11-23 22:59:39,452 INFO L435 NwaCegarLoop]: 108 mSDtfsCounter, 26 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-23 22:59:39,456 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 562 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-23 22:59:39,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2024-11-23 22:59:39,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 276. [2024-11-23 22:59:39,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 198 states have (on average 1.1868686868686869) internal successors, (235), 200 states have internal predecessors, (235), 54 states have call successors, (54), 23 states have call predecessors, (54), 23 states have return successors, (56), 52 states have call predecessors, (56), 52 states have call successors, (56) [2024-11-23 22:59:39,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 345 transitions. [2024-11-23 22:59:39,569 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 345 transitions. Word has length 112 [2024-11-23 22:59:39,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:59:39,574 INFO L471 AbstractCegarLoop]: Abstraction has 276 states and 345 transitions. [2024-11-23 22:59:39,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 10 states have internal predecessors, (57), 5 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-23 22:59:39,574 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 345 transitions. [2024-11-23 22:59:39,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-23 22:59:39,582 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:59:39,583 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:59:39,600 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-23 22:59:39,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-23 22:59:39,788 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:59:39,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:59:39,789 INFO L85 PathProgramCache]: Analyzing trace with hash 472566145, now seen corresponding path program 1 times [2024-11-23 22:59:39,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:59:39,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550301704] [2024-11-23 22:59:39,789 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:39,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:59:40,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:41,510 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-23 22:59:41,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:41,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550301704] [2024-11-23 22:59:41,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550301704] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:59:41,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936761131] [2024-11-23 22:59:41,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:41,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:59:41,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:59:41,517 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:59:41,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-23 22:59:41,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:41,920 INFO L256 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-11-23 22:59:41,935 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:59:41,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-23 22:59:42,340 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-23 22:59:42,342 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 11 treesize of output 11 [2024-11-23 22:59:42,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-23 22:59:42,359 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 [2024-11-23 22:59:42,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 22:59:42,456 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 [2024-11-23 22:59:42,462 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 [2024-11-23 22:59:42,473 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 [2024-11-23 22:59:44,220 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 56 proven. 15 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-23 22:59:44,221 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:59:45,056 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-23 22:59:45,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936761131] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:59:45,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:59:45,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 20, 8] total 29 [2024-11-23 22:59:45,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222131103] [2024-11-23 22:59:45,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:59:45,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-23 22:59:45,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:59:45,060 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-23 22:59:45,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=722, Unknown=0, NotChecked=0, Total=812 [2024-11-23 22:59:45,062 INFO L87 Difference]: Start difference. First operand 276 states and 345 transitions. Second operand has 29 states, 28 states have (on average 4.535714285714286) internal successors, (127), 26 states have internal predecessors, (127), 8 states have call successors, (27), 5 states have call predecessors, (27), 6 states have return successors, (25), 8 states have call predecessors, (25), 8 states have call successors, (25) [2024-11-23 22:59:50,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:59:50,371 INFO L93 Difference]: Finished difference Result 548 states and 726 transitions. [2024-11-23 22:59:50,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-23 22:59:50,372 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 4.535714285714286) internal successors, (127), 26 states have internal predecessors, (127), 8 states have call successors, (27), 5 states have call predecessors, (27), 6 states have return successors, (25), 8 states have call predecessors, (25), 8 states have call successors, (25) Word has length 112 [2024-11-23 22:59:50,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:59:50,376 INFO L225 Difference]: With dead ends: 548 [2024-11-23 22:59:50,377 INFO L226 Difference]: Without dead ends: 374 [2024-11-23 22:59:50,379 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 211 SyntacticMatches, 7 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=299, Invalid=2251, Unknown=0, NotChecked=0, Total=2550 [2024-11-23 22:59:50,384 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 237 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 1441 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-23 22:59:50,384 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 1055 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1441 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-23 22:59:50,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2024-11-23 22:59:50,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 294. [2024-11-23 22:59:50,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 213 states have (on average 1.1830985915492958) internal successors, (252), 213 states have internal predecessors, (252), 54 states have call successors, (54), 24 states have call predecessors, (54), 26 states have return successors, (66), 56 states have call predecessors, (66), 52 states have call successors, (66) [2024-11-23 22:59:50,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 372 transitions. [2024-11-23 22:59:50,499 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 372 transitions. Word has length 112 [2024-11-23 22:59:50,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:59:50,501 INFO L471 AbstractCegarLoop]: Abstraction has 294 states and 372 transitions. [2024-11-23 22:59:50,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 4.535714285714286) internal successors, (127), 26 states have internal predecessors, (127), 8 states have call successors, (27), 5 states have call predecessors, (27), 6 states have return successors, (25), 8 states have call predecessors, (25), 8 states have call successors, (25) [2024-11-23 22:59:50,502 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 372 transitions. [2024-11-23 22:59:50,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-23 22:59:50,505 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:59:50,505 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:59:50,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-23 22:59:50,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-23 22:59:50,710 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:59:50,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:59:50,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1883239105, now seen corresponding path program 1 times [2024-11-23 22:59:50,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:59:50,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894603646] [2024-11-23 22:59:50,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:50,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:59:50,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:53,964 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-23 22:59:53,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:53,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894603646] [2024-11-23 22:59:53,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894603646] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:59:53,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77458247] [2024-11-23 22:59:53,965 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:53,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:59:53,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:59:53,968 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:59:53,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-23 22:59:54,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:54,333 INFO L256 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-23 22:59:54,339 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:59:55,075 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-23 22:59:55,075 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:59:55,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77458247] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:59:55,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:59:55,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [15] total 25 [2024-11-23 22:59:55,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222317406] [2024-11-23 22:59:55,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:59:55,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 22:59:55,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:59:55,078 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 22:59:55,078 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=551, Unknown=0, NotChecked=0, Total=600 [2024-11-23 22:59:55,079 INFO L87 Difference]: Start difference. First operand 294 states and 372 transitions. Second operand has 12 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 6 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 5 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-23 22:59:56,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:59:56,141 INFO L93 Difference]: Finished difference Result 486 states and 626 transitions. [2024-11-23 22:59:56,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 22:59:56,142 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 6 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 5 states have call predecessors, (12), 6 states have call successors, (12) Word has length 112 [2024-11-23 22:59:56,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:59:56,145 INFO L225 Difference]: With dead ends: 486 [2024-11-23 22:59:56,145 INFO L226 Difference]: Without dead ends: 302 [2024-11-23 22:59:56,147 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=98, Invalid=1092, Unknown=0, NotChecked=0, Total=1190 [2024-11-23 22:59:56,148 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 112 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-23 22:59:56,149 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 769 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-23 22:59:56,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2024-11-23 22:59:56,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 296. [2024-11-23 22:59:56,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 215 states have (on average 1.1813953488372093) internal successors, (254), 215 states have internal predecessors, (254), 54 states have call successors, (54), 24 states have call predecessors, (54), 26 states have return successors, (66), 56 states have call predecessors, (66), 52 states have call successors, (66) [2024-11-23 22:59:56,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 374 transitions. [2024-11-23 22:59:56,234 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 374 transitions. Word has length 112 [2024-11-23 22:59:56,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:59:56,234 INFO L471 AbstractCegarLoop]: Abstraction has 296 states and 374 transitions. [2024-11-23 22:59:56,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 6 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 5 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-23 22:59:56,235 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 374 transitions. [2024-11-23 22:59:56,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-23 22:59:56,236 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:59:56,236 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:59:56,249 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-23 22:59:56,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-23 22:59:56,437 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:59:56,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:59:56,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1548446045, now seen corresponding path program 1 times [2024-11-23 22:59:56,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:59:56,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511783327] [2024-11-23 22:59:56,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:56,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:59:56,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:57,999 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-23 22:59:58,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:58,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511783327] [2024-11-23 22:59:58,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511783327] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:59:58,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132316254] [2024-11-23 22:59:58,004 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:58,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:59:58,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:59:58,008 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:59:58,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-23 22:59:58,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:58,421 INFO L256 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 112 conjuncts are in the unsatisfiable core [2024-11-23 22:59:58,432 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:59:58,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-23 22:59:58,789 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 [2024-11-23 22:59:58,810 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 [2024-11-23 22:59:58,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 22:59:58,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 22:59:58,995 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 31 treesize of output 36 [2024-11-23 22:59:59,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 22:59:59,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 22:59:59,011 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 31 treesize of output 36 [2024-11-23 22:59:59,049 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-23 22:59:59,049 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 1 case distinctions, treesize of input 30 treesize of output 25 [2024-11-23 22:59:59,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 22:59:59,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 22:59:59,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2024-11-23 22:59:59,142 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-23 22:59:59,144 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 1 case distinctions, treesize of input 23 treesize of output 20 [2024-11-23 22:59:59,186 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-23 22:59:59,186 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 11 treesize of output 11 [2024-11-23 22:59:59,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 22:59:59,417 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 36 treesize of output 29 [2024-11-23 22:59:59,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 22:59:59,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 22:59:59,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 22:59:59,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 38 [2024-11-23 22:59:59,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 21 [2024-11-23 23:00:09,387 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 36 proven. 36 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-23 23:00:09,388 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:00:11,468 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (+ 16 |c_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset|)) (.cse6 (+ 8 |c_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset|)) (.cse10 (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|)) (.cse8 (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 24))) (and (forall ((v_ArrVal_1484 Int) (v_ArrVal_1487 Int) (v_ArrVal_1483 (Array Int Int))) (let ((.cse0 (let ((.cse9 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse10 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_1487)))) (store .cse9 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse9 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse8 v_ArrVal_1484))))) (let ((.cse4 (let ((.cse7 (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_1483))) (store .cse7 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse7 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse8 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset|)))) (.cse5 (select .cse0 |c_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base|))) (let ((.cse1 (select .cse5 |c_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset|)) (.cse2 (select (select .cse4 |c_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset|))) (or (not (= (select (select .cse0 .cse1) .cse2) |c_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base|)) (not (= .cse3 (select (select .cse4 .cse1) .cse2))) (= (select .cse5 .cse6) 0)))))) (forall ((v_ArrVal_1484 Int) (v_ArrVal_1487 Int) (v_ArrVal_1483 (Array Int Int))) (let ((.cse14 (let ((.cse17 (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_1483))) (store .cse17 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse17 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse8 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset|))))) (let ((.cse15 (select .cse14 |c_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base|)) (.cse11 (let ((.cse16 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse10 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_1487)))) (store .cse16 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse16 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse8 v_ArrVal_1484))))) (let ((.cse12 (select (select .cse11 |c_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset|)) (.cse13 (select .cse15 |c_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset|))) (or (not (= (select (select .cse11 .cse12) .cse13) |c_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base|)) (not (= .cse3 (select (select .cse14 .cse12) .cse13))) (= (select .cse15 .cse6) 0)))))))) is different from false [2024-11-23 23:00:11,605 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 23:00:11,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 579 treesize of output 559 [2024-11-23 23:00:11,719 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 9 treesize of output 1 [2024-11-23 23:00:12,384 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-23 23:00:12,388 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-23 23:00:22,791 WARN L286 SmtUtils]: Spent 10.40s on a formula simplification. DAG size of input: 423 DAG size of output: 299 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-23 23:00:22,792 INFO L349 Elim1Store]: treesize reduction 5796, result has 38.7 percent of original size [2024-11-23 23:00:22,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 13 new quantified variables, introduced 50 case distinctions, treesize of input 4859 treesize of output 6867 [2024-11-23 23:00:23,445 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-23 23:00:23,447 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-23 23:00:53,332 WARN L286 SmtUtils]: Spent 29.84s on a formula simplification. DAG size of input: 900 DAG size of output: 545 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-23 23:00:53,332 INFO L349 Elim1Store]: treesize reduction 4260, result has 37.7 percent of original size [2024-11-23 23:00:53,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 19 select indices, 19 select index equivalence classes, 4 disjoint index pairs (out of 171 index pairs), introduced 23 new quantified variables, introduced 192 case distinctions, treesize of input 63529 treesize of output 43327 [2024-11-23 23:00:57,085 INFO L224 Elim1Store]: Index analysis took 108 ms [2024-11-23 23:00:58,483 INFO L349 Elim1Store]: treesize reduction 436, result has 31.8 percent of original size [2024-11-23 23:00:58,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 9 new quantified variables, introduced 35 case distinctions, treesize of input 8815 treesize of output 8671 [2024-11-23 23:01:00,550 INFO L224 Elim1Store]: Index analysis took 118 ms [2024-11-23 23:01:02,576 INFO L349 Elim1Store]: treesize reduction 188, result has 61.6 percent of original size [2024-11-23 23:01:02,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 10 new quantified variables, introduced 36 case distinctions, treesize of input 9768 treesize of output 9657 [2024-11-23 23:01:04,936 INFO L224 Elim1Store]: Index analysis took 132 ms [2024-11-23 23:01:06,501 INFO L349 Elim1Store]: treesize reduction 224, result has 58.9 percent of original size [2024-11-23 23:01:06,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 19498 treesize of output 19066 [2024-11-23 23:01:10,556 INFO L349 Elim1Store]: treesize reduction 47, result has 67.6 percent of original size [2024-11-23 23:01:10,558 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 12684 treesize of output 12409 [2024-11-23 23:01:14,929 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 23:01:14,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 15872 treesize of output 15471 [2024-11-23 23:01:23,046 INFO L349 Elim1Store]: treesize reduction 64, result has 68.2 percent of original size [2024-11-23 23:01:23,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 14108 treesize of output 13844 [2024-11-23 23:01:28,558 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 23:01:28,560 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 17296 treesize of output 16810 [2024-11-23 23:01:34,559 WARN L286 SmtUtils]: Spent 5.99s on a formula simplification. DAG size of input: 2262 DAG size of output: 2248 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 23:04:28,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101 [2024-11-23 23:04:28,697 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-23 23:04:28,701 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-11-23 23:04:28,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-23 23:04:28,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-23 23:04:28,908 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_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/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 [2024-11-23 23:04:28,915 INFO L158 Benchmark]: Toolchain (without parser) took 761876.12ms. Allocated memory was 142.6MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 99.9MB in the beginning and 768.1MB in the end (delta: -668.2MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2024-11-23 23:04:28,915 INFO L158 Benchmark]: CDTParser took 0.56ms. Allocated memory is still 167.8MB. Free memory is still 106.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 23:04:28,915 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2701.19ms. Allocated memory was 142.6MB in the beginning and 151.0MB in the end (delta: 8.4MB). Free memory was 99.6MB in the beginning and 51.4MB in the end (delta: 48.2MB). Peak memory consumption was 76.8MB. Max. memory is 16.1GB. [2024-11-23 23:04:28,916 INFO L158 Benchmark]: Boogie Procedure Inliner took 158.01ms. Allocated memory was 151.0MB in the beginning and 343.9MB in the end (delta: 192.9MB). Free memory was 51.4MB in the beginning and 297.4MB in the end (delta: -246.0MB). Peak memory consumption was 14.4MB. Max. memory is 16.1GB. [2024-11-23 23:04:28,916 INFO L158 Benchmark]: Boogie Preprocessor took 106.64ms. Allocated memory is still 343.9MB. Free memory was 297.4MB in the beginning and 293.4MB in the end (delta: 4.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 23:04:28,917 INFO L158 Benchmark]: RCFGBuilder took 889.93ms. Allocated memory is still 343.9MB. Free memory was 293.4MB in the beginning and 266.1MB in the end (delta: 27.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-23 23:04:28,917 INFO L158 Benchmark]: TraceAbstraction took 758012.15ms. Allocated memory was 343.9MB in the beginning and 1.8GB in the end (delta: 1.4GB). Free memory was 265.3MB in the beginning and 768.1MB in the end (delta: -502.8MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2024-11-23 23:04:28,919 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56ms. Allocated memory is still 167.8MB. Free memory is still 106.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2701.19ms. Allocated memory was 142.6MB in the beginning and 151.0MB in the end (delta: 8.4MB). Free memory was 99.6MB in the beginning and 51.4MB in the end (delta: 48.2MB). Peak memory consumption was 76.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 158.01ms. Allocated memory was 151.0MB in the beginning and 343.9MB in the end (delta: 192.9MB). Free memory was 51.4MB in the beginning and 297.4MB in the end (delta: -246.0MB). Peak memory consumption was 14.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 106.64ms. Allocated memory is still 343.9MB. Free memory was 297.4MB in the beginning and 293.4MB in the end (delta: 4.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 889.93ms. Allocated memory is still 343.9MB. Free memory was 293.4MB in the beginning and 266.1MB in the end (delta: 27.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 758012.15ms. Allocated memory was 343.9MB in the beginning and 1.8GB in the end (delta: 1.4GB). Free memory was 265.3MB in the beginning and 768.1MB in the end (delta: -502.8MB). Peak memory consumption was 1.1GB. 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_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/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_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/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_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_front_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d60183102582204ad3b2c5c2967c5e39411556c79eb47cc4f179f5b1b7f07a77 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:04:31,752 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:04:31,853 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-23 23:04:31,875 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:04:31,875 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:04:31,913 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:04:31,914 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:04:31,914 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:04:31,914 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:04:31,915 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:04:31,915 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:04:31,915 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:04:31,915 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:04:31,916 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:04:31,916 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:04:31,916 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:04:31,916 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:04:31,916 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:04:31,917 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:04:31,917 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:04:31,917 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:04:31,917 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-23 23:04:31,917 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-23 23:04:31,917 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-23 23:04:31,918 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:04:31,918 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:04:31,918 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:04:31,918 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:04:31,918 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:04:31,919 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:04:31,919 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:04:31,919 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:04:31,919 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:04:31,919 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:04:31,920 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:04:31,920 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:04:31,920 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:04:31,920 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:04:31,920 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:04:31,920 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:04:31,921 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:04:31,921 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-23 23:04:31,921 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-23 23:04:31,921 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:04:31,921 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:04:31,921 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:04:31,922 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:04:31,922 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_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d60183102582204ad3b2c5c2967c5e39411556c79eb47cc4f179f5b1b7f07a77 [2024-11-23 23:04:32,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:04:32,298 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:04:32,301 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:04:32,304 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:04:32,305 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:04:32,306 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/aws-c-common/aws_linked_list_front_harness.i [2024-11-23 23:04:35,554 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/data/fc8f18f90/108ad5101ceb43c7b85435c8dfe531da/FLAGd87bf4e1b [2024-11-23 23:04:36,197 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:04:36,201 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/sv-benchmarks/c/aws-c-common/aws_linked_list_front_harness.i [2024-11-23 23:04:36,265 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/data/fc8f18f90/108ad5101ceb43c7b85435c8dfe531da/FLAGd87bf4e1b [2024-11-23 23:04:36,291 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/data/fc8f18f90/108ad5101ceb43c7b85435c8dfe531da [2024-11-23 23:04:36,294 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:04:36,296 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:04:36,299 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:04:36,300 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:04:36,305 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:04:36,307 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:04:36" (1/1) ... [2024-11-23 23:04:36,310 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7809b0ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:36, skipping insertion in model container [2024-11-23 23:04:36,310 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:04:36" (1/1) ... [2024-11-23 23:04:36,440 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:04:36,761 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/sv-benchmarks/c/aws-c-common/aws_linked_list_front_harness.i[4495,4508] [2024-11-23 23:04:36,768 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_389c5704-da44-475b-91a7-3376a417c507/sv-benchmarks/c/aws-c-common/aws_linked_list_front_harness.i[4555,4568] [2024-11-23 23:04:37,544 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:04:37,679 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:04:37,681 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:04:37,682 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:04:37,708 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:04:37,713 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:04:37,714 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:04:37,715 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:04:37,715 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:04:37,715 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:04:37,720 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:04:37,726 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:04:37,730 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:04:37,732 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:04:37,734 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:04:37,755 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:04:37,756 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:04:37,759 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:04:37,760 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:04:37,761 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:04:37,762 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:04:37,763 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:04:37,764 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:04:37,765 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:04:37,768 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:04:37,769 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:04:37,769 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:04:37,769 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:04:37,770 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:04:38,337 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:04:38,337 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:04:38,338 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:04:38,338 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:04:38,508 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:04:38,525 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_389c5704-da44-475b-91a7-3376a417c507/sv-benchmarks/c/aws-c-common/aws_linked_list_front_harness.i[150660,150673] [2024-11-23 23:04:38,526 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:04:38,548 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-23 23:04:38,577 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:04:38,585 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_389c5704-da44-475b-91a7-3376a417c507/sv-benchmarks/c/aws-c-common/aws_linked_list_front_harness.i[4495,4508] [2024-11-23 23:04:38,585 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_389c5704-da44-475b-91a7-3376a417c507/sv-benchmarks/c/aws-c-common/aws_linked_list_front_harness.i[4555,4568] [2024-11-23 23:04:38,614 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:04:38,656 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:04:38,657 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:04:38,657 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:04:38,663 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:04:38,664 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:04:38,664 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:04:38,664 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:04:38,665 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:04:38,665 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:04:38,666 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:04:38,667 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:04:38,668 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:04:38,669 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:04:38,669 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:04:38,674 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:04:38,675 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:04:38,675 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:04:38,675 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:04:38,676 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:04:38,677 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:04:38,677 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:04:38,677 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:04:38,678 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:04:38,679 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:04:38,679 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:04:38,679 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:04:38,680 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:04:38,680 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:04:38,732 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:04:38,732 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:04:38,733 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:04:38,733 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:04:38,770 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:04:38,780 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_389c5704-da44-475b-91a7-3376a417c507/sv-benchmarks/c/aws-c-common/aws_linked_list_front_harness.i[150660,150673] [2024-11-23 23:04:38,781 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:04:38,787 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:04:38,799 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_389c5704-da44-475b-91a7-3376a417c507/sv-benchmarks/c/aws-c-common/aws_linked_list_front_harness.i[4495,4508] [2024-11-23 23:04:38,800 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_389c5704-da44-475b-91a7-3376a417c507/sv-benchmarks/c/aws-c-common/aws_linked_list_front_harness.i[4555,4568] [2024-11-23 23:04:38,866 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:04:38,867 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:04:38,867 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:04:38,867 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:04:38,868 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:04:38,879 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:04:38,879 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:04:38,880 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:04:38,881 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:04:38,882 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:04:38,883 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:04:38,883 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:04:38,883 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:04:39,020 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_389c5704-da44-475b-91a7-3376a417c507/sv-benchmarks/c/aws-c-common/aws_linked_list_front_harness.i[150660,150673] [2024-11-23 23:04:39,021 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:04:39,412 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:04:39,413 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:39 WrapperNode [2024-11-23 23:04:39,414 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:04:39,417 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:04:39,417 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:04:39,418 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:04:39,424 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:39" (1/1) ... [2024-11-23 23:04:39,488 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:39" (1/1) ... [2024-11-23 23:04:39,537 INFO L138 Inliner]: procedures = 687, calls = 1043, calls flagged for inlining = 51, calls inlined = 5, statements flattened = 134 [2024-11-23 23:04:39,541 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:04:39,542 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:04:39,542 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:04:39,542 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:04:39,552 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:39" (1/1) ... [2024-11-23 23:04:39,553 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:39" (1/1) ... [2024-11-23 23:04:39,563 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:39" (1/1) ... [2024-11-23 23:04:39,605 INFO L175 MemorySlicer]: Split 27 memory accesses to 3 slices as follows [2, 20, 5]. 74 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]. [2024-11-23 23:04:39,605 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:39" (1/1) ... [2024-11-23 23:04:39,605 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:39" (1/1) ... [2024-11-23 23:04:39,625 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:39" (1/1) ... [2024-11-23 23:04:39,626 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:39" (1/1) ... [2024-11-23 23:04:39,634 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:39" (1/1) ... [2024-11-23 23:04:39,644 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:39" (1/1) ... [2024-11-23 23:04:39,650 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:39" (1/1) ... [2024-11-23 23:04:39,658 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:04:39,662 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:04:39,663 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:04:39,663 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:04:39,664 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:39" (1/1) ... [2024-11-23 23:04:39,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:04:39,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:04:39,705 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:04:39,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:04:39,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-23 23:04:39,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-23 23:04:39,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-23 23:04:39,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-23 23:04:39,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-23 23:04:39,738 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-23 23:04:39,738 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2024-11-23 23:04:39,738 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2024-11-23 23:04:39,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-23 23:04:39,738 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2024-11-23 23:04:39,738 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2024-11-23 23:04:39,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:04:39,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-23 23:04:39,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-23 23:04:39,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-23 23:04:39,739 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_front [2024-11-23 23:04:39,739 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_front [2024-11-23 23:04:39,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:04:39,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:04:39,739 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_empty [2024-11-23 23:04:39,740 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_empty [2024-11-23 23:04:39,740 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 23:04:39,740 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 23:04:39,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-23 23:04:39,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-23 23:04:39,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-23 23:04:39,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-23 23:04:39,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-23 23:04:39,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-23 23:04:39,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-23 23:04:39,741 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-23 23:04:39,741 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-23 23:04:39,741 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2024-11-23 23:04:39,741 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2024-11-23 23:04:40,022 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:04:40,024 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:04:40,631 INFO L? ?]: Removed 61 outVars from TransFormulas that were not future-live. [2024-11-23 23:04:40,632 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:04:40,646 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:04:40,646 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 23:04:40,647 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:04:40 BoogieIcfgContainer [2024-11-23 23:04:40,647 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:04:40,651 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:04:40,651 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:04:40,657 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:04:40,657 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:04:36" (1/3) ... [2024-11-23 23:04:40,658 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@789e4197 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:04:40, skipping insertion in model container [2024-11-23 23:04:40,658 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:04:39" (2/3) ... [2024-11-23 23:04:40,659 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@789e4197 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:04:40, skipping insertion in model container [2024-11-23 23:04:40,660 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:04:40" (3/3) ... [2024-11-23 23:04:40,661 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_linked_list_front_harness.i [2024-11-23 23:04:40,675 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:04:40,676 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_linked_list_front_harness.i that has 9 procedures, 98 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-23 23:04:40,732 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:04:40,745 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;@46249dd4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:04:40,745 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 23:04:40,749 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 64 states have (on average 1.296875) internal successors, (83), 65 states have internal predecessors, (83), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-23 23:04:40,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-23 23:04:40,758 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:40,759 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:04:40,760 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:40,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:40,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1721147975, now seen corresponding path program 1 times [2024-11-23 23:04:40,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:04:40,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [265956788] [2024-11-23 23:04:40,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:40,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:40,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:04:40,778 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:04:40,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:04:41,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:41,087 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 23:04:41,100 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:04:41,154 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-23 23:04:41,154 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:04:41,155 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:04:41,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265956788] [2024-11-23 23:04:41,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265956788] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:41,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:04:41,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:04:41,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794586659] [2024-11-23 23:04:41,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:41,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 23:04:41,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:04:41,191 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 23:04:41,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:04:41,194 INFO L87 Difference]: Start difference. First operand has 98 states, 64 states have (on average 1.296875) internal successors, (83), 65 states have internal predecessors, (83), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-23 23:04:41,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:41,253 INFO L93 Difference]: Finished difference Result 188 states and 271 transitions. [2024-11-23 23:04:41,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 23:04:41,255 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 84 [2024-11-23 23:04:41,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:41,262 INFO L225 Difference]: With dead ends: 188 [2024-11-23 23:04:41,262 INFO L226 Difference]: Without dead ends: 93 [2024-11-23 23:04:41,266 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:04:41,269 INFO L435 NwaCegarLoop]: 127 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, 127 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 [2024-11-23 23:04:41,269 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:04:41,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-23 23:04:41,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-11-23 23:04:41,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 60 states have (on average 1.25) internal successors, (75), 61 states have internal predecessors, (75), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-23 23:04:41,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 122 transitions. [2024-11-23 23:04:41,313 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 122 transitions. Word has length 84 [2024-11-23 23:04:41,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:41,313 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 122 transitions. [2024-11-23 23:04:41,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-23 23:04:41,314 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 122 transitions. [2024-11-23 23:04:41,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-23 23:04:41,317 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:41,317 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:04:41,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 23:04:41,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:41,521 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:41,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:41,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1720045951, now seen corresponding path program 1 times [2024-11-23 23:04:41,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:04:41,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [810596379] [2024-11-23 23:04:41,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:41,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:41,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:04:41,527 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:04:41,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 23:04:41,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:41,759 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 23:04:41,764 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:04:41,867 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-23 23:04:41,871 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:04:41,872 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:04:41,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810596379] [2024-11-23 23:04:41,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810596379] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:41,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:04:41,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:04:41,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269089207] [2024-11-23 23:04:41,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:41,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:04:41,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:04:41,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:04:41,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:04:41,878 INFO L87 Difference]: Start difference. First operand 93 states and 122 transitions. Second operand has 6 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-23 23:04:42,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:42,018 INFO L93 Difference]: Finished difference Result 169 states and 224 transitions. [2024-11-23 23:04:42,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:04:42,019 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 84 [2024-11-23 23:04:42,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:42,022 INFO L225 Difference]: With dead ends: 169 [2024-11-23 23:04:42,024 INFO L226 Difference]: Without dead ends: 95 [2024-11-23 23:04:42,026 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:04:42,028 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 0 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 564 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 [2024-11-23 23:04:42,029 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 564 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:04:42,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-23 23:04:42,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-11-23 23:04:42,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 61 states have (on average 1.2459016393442623) internal successors, (76), 63 states have internal predecessors, (76), 24 states have call successors, (24), 8 states have call predecessors, (24), 9 states have return successors, (25), 23 states have call predecessors, (25), 23 states have call successors, (25) [2024-11-23 23:04:42,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 125 transitions. [2024-11-23 23:04:42,052 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 125 transitions. Word has length 84 [2024-11-23 23:04:42,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:42,054 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 125 transitions. [2024-11-23 23:04:42,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-23 23:04:42,055 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 125 transitions. [2024-11-23 23:04:42,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-23 23:04:42,058 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:42,059 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:04:42,073 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 23:04:42,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:42,263 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:42,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:42,264 INFO L85 PathProgramCache]: Analyzing trace with hash 2129055739, now seen corresponding path program 1 times [2024-11-23 23:04:42,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:04:42,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1267799792] [2024-11-23 23:04:42,265 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:42,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:42,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:04:42,267 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:04:42,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 23:04:42,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:42,482 INFO L256 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 23:04:42,486 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:04:42,658 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-23 23:04:42,658 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:04:42,658 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:04:42,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267799792] [2024-11-23 23:04:42,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267799792] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:42,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:04:42,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 23:04:42,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696832812] [2024-11-23 23:04:42,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:42,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 23:04:42,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:04:42,661 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 23:04:42,661 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:04:42,661 INFO L87 Difference]: Start difference. First operand 95 states and 125 transitions. Second operand has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-23 23:04:43,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:43,014 INFO L93 Difference]: Finished difference Result 176 states and 233 transitions. [2024-11-23 23:04:43,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:04:43,015 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 86 [2024-11-23 23:04:43,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:43,019 INFO L225 Difference]: With dead ends: 176 [2024-11-23 23:04:43,019 INFO L226 Difference]: Without dead ends: 97 [2024-11-23 23:04:43,020 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:04:43,021 INFO L435 NwaCegarLoop]: 109 mSDtfsCounter, 32 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:04:43,024 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 681 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 23:04:43,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-23 23:04:43,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2024-11-23 23:04:43,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 61 states have (on average 1.2295081967213115) internal successors, (75), 63 states have internal predecessors, (75), 24 states have call successors, (24), 8 states have call predecessors, (24), 9 states have return successors, (25), 23 states have call predecessors, (25), 23 states have call successors, (25) [2024-11-23 23:04:43,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 124 transitions. [2024-11-23 23:04:43,050 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 124 transitions. Word has length 86 [2024-11-23 23:04:43,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:43,054 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 124 transitions. [2024-11-23 23:04:43,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-23 23:04:43,054 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 124 transitions. [2024-11-23 23:04:43,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-23 23:04:43,055 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:43,056 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:04:43,069 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 23:04:43,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:43,256 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:43,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:43,257 INFO L85 PathProgramCache]: Analyzing trace with hash -759798295, now seen corresponding path program 1 times [2024-11-23 23:04:43,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:04:43,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1980654625] [2024-11-23 23:04:43,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:43,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:43,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:04:43,260 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:04:43,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 23:04:43,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:43,480 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-23 23:04:43,486 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:04:43,692 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-23 23:04:43,693 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:04:43,694 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:04:43,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980654625] [2024-11-23 23:04:43,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980654625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:43,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:04:43,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 23:04:43,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034982729] [2024-11-23 23:04:43,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:43,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 23:04:43,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:04:43,696 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 23:04:43,696 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:04:43,697 INFO L87 Difference]: Start difference. First operand 95 states and 124 transitions. Second operand has 9 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-23 23:04:44,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:44,117 INFO L93 Difference]: Finished difference Result 182 states and 241 transitions. [2024-11-23 23:04:44,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 23:04:44,118 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 88 [2024-11-23 23:04:44,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:44,120 INFO L225 Difference]: With dead ends: 182 [2024-11-23 23:04:44,120 INFO L226 Difference]: Without dead ends: 102 [2024-11-23 23:04:44,121 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:04:44,121 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 41 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:04:44,122 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 765 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 23:04:44,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-23 23:04:44,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 96. [2024-11-23 23:04:44,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 62 states have (on average 1.2258064516129032) internal successors, (76), 64 states have internal predecessors, (76), 24 states have call successors, (24), 8 states have call predecessors, (24), 9 states have return successors, (25), 23 states have call predecessors, (25), 23 states have call successors, (25) [2024-11-23 23:04:44,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 125 transitions. [2024-11-23 23:04:44,137 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 125 transitions. Word has length 88 [2024-11-23 23:04:44,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:44,137 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 125 transitions. [2024-11-23 23:04:44,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-23 23:04:44,137 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 125 transitions. [2024-11-23 23:04:44,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-23 23:04:44,139 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:44,139 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:04:44,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 23:04:44,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:44,340 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:44,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:44,340 INFO L85 PathProgramCache]: Analyzing trace with hash 288383357, now seen corresponding path program 1 times [2024-11-23 23:04:44,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:04:44,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1250159474] [2024-11-23 23:04:44,341 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:44,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:44,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:04:44,343 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:04:44,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 23:04:44,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:44,557 INFO L256 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-23 23:04:44,564 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:04:44,591 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-23 23:04:44,591 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:04:44,592 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:04:44,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250159474] [2024-11-23 23:04:44,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250159474] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:44,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:04:44,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:04:44,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780041029] [2024-11-23 23:04:44,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:44,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:04:44,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:04:44,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:04:44,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:04:44,594 INFO L87 Difference]: Start difference. First operand 96 states and 125 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-23 23:04:44,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:44,654 INFO L93 Difference]: Finished difference Result 177 states and 236 transitions. [2024-11-23 23:04:44,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:04:44,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 89 [2024-11-23 23:04:44,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:44,658 INFO L225 Difference]: With dead ends: 177 [2024-11-23 23:04:44,658 INFO L226 Difference]: Without dead ends: 100 [2024-11-23 23:04:44,659 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:04:44,659 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 2 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:04:44,662 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 231 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:04:44,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-23 23:04:44,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 97. [2024-11-23 23:04:44,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 63 states have (on average 1.2222222222222223) internal successors, (77), 65 states have internal predecessors, (77), 24 states have call successors, (24), 8 states have call predecessors, (24), 9 states have return successors, (25), 23 states have call predecessors, (25), 23 states have call successors, (25) [2024-11-23 23:04:44,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 126 transitions. [2024-11-23 23:04:44,689 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 126 transitions. Word has length 89 [2024-11-23 23:04:44,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:44,690 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 126 transitions. [2024-11-23 23:04:44,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-23 23:04:44,694 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 126 transitions. [2024-11-23 23:04:44,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-23 23:04:44,695 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:44,696 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:04:44,711 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-23 23:04:44,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:44,897 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:44,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:44,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1217788577, now seen corresponding path program 1 times [2024-11-23 23:04:44,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:04:44,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [647071362] [2024-11-23 23:04:44,902 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:44,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:44,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:04:44,906 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:04:44,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 23:04:45,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:45,135 INFO L256 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 23:04:45,139 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:04:45,217 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-23 23:04:45,217 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:04:45,217 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:04:45,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647071362] [2024-11-23 23:04:45,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647071362] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:45,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:04:45,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:04:45,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927687665] [2024-11-23 23:04:45,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:45,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:04:45,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:04:45,219 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:04:45,219 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:04:45,220 INFO L87 Difference]: Start difference. First operand 97 states and 126 transitions. Second operand has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-23 23:04:45,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:45,334 INFO L93 Difference]: Finished difference Result 178 states and 233 transitions. [2024-11-23 23:04:45,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:04:45,335 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 97 [2024-11-23 23:04:45,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:45,337 INFO L225 Difference]: With dead ends: 178 [2024-11-23 23:04:45,337 INFO L226 Difference]: Without dead ends: 100 [2024-11-23 23:04:45,338 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:04:45,339 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 0 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:04:45,339 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 666 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:04:45,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-23 23:04:45,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 98. [2024-11-23 23:04:45,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 64 states have (on average 1.21875) internal successors, (78), 66 states have internal predecessors, (78), 24 states have call successors, (24), 8 states have call predecessors, (24), 9 states have return successors, (25), 23 states have call predecessors, (25), 23 states have call successors, (25) [2024-11-23 23:04:45,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 127 transitions. [2024-11-23 23:04:45,356 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 127 transitions. Word has length 97 [2024-11-23 23:04:45,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:45,357 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 127 transitions. [2024-11-23 23:04:45,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-23 23:04:45,357 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 127 transitions. [2024-11-23 23:04:45,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-23 23:04:45,358 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:45,358 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:04:45,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-23 23:04:45,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:45,562 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:45,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:45,563 INFO L85 PathProgramCache]: Analyzing trace with hash -146681267, now seen corresponding path program 1 times [2024-11-23 23:04:45,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:04:45,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1803654640] [2024-11-23 23:04:45,563 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:45,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:45,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:04:45,565 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:04:45,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 23:04:45,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:45,801 INFO L256 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-23 23:04:45,806 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:04:45,876 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 [2024-11-23 23:04:50,683 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 [2024-11-23 23:04:51,052 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-23 23:04:51,052 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:04:51,727 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-23 23:04:51,727 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:04:51,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803654640] [2024-11-23 23:04:51,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803654640] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:04:51,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:04:51,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 17 [2024-11-23 23:04:51,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740244157] [2024-11-23 23:04:51,728 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 23:04:51,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-23 23:04:51,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:04:51,729 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-23 23:04:51,730 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=199, Unknown=1, NotChecked=28, Total=272 [2024-11-23 23:04:51,731 INFO L87 Difference]: Start difference. First operand 98 states and 127 transitions. Second operand has 17 states, 17 states have (on average 5.529411764705882) internal successors, (94), 17 states have internal predecessors, (94), 5 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2024-11-23 23:04:53,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:53,099 INFO L93 Difference]: Finished difference Result 221 states and 300 transitions. [2024-11-23 23:04:53,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-23 23:04:53,100 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.529411764705882) internal successors, (94), 17 states have internal predecessors, (94), 5 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) Word has length 99 [2024-11-23 23:04:53,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:53,102 INFO L225 Difference]: With dead ends: 221 [2024-11-23 23:04:53,102 INFO L226 Difference]: Without dead ends: 142 [2024-11-23 23:04:53,103 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 181 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=76, Invalid=347, Unknown=1, NotChecked=38, Total=462 [2024-11-23 23:04:53,103 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 67 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 308 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:04:53,104 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 914 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 300 Invalid, 0 Unknown, 308 Unchecked, 1.0s Time] [2024-11-23 23:04:53,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-23 23:04:53,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 116. [2024-11-23 23:04:53,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 80 states have (on average 1.25) internal successors, (100), 82 states have internal predecessors, (100), 25 states have call successors, (25), 9 states have call predecessors, (25), 10 states have return successors, (27), 24 states have call predecessors, (27), 24 states have call successors, (27) [2024-11-23 23:04:53,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 152 transitions. [2024-11-23 23:04:53,121 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 152 transitions. Word has length 99 [2024-11-23 23:04:53,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:53,121 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 152 transitions. [2024-11-23 23:04:53,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.529411764705882) internal successors, (94), 17 states have internal predecessors, (94), 5 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2024-11-23 23:04:53,121 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 152 transitions. [2024-11-23 23:04:53,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-23 23:04:53,123 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:53,123 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:04:53,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-23 23:04:53,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:53,324 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:53,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:53,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1814893391, now seen corresponding path program 1 times [2024-11-23 23:04:53,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:04:53,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [768627928] [2024-11-23 23:04:53,325 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:53,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:53,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:04:53,326 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:04:53,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 23:04:53,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:53,525 INFO L256 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 23:04:53,528 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:04:53,549 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-23 23:04:53,552 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:04:53,552 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:04:53,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768627928] [2024-11-23 23:04:53,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768627928] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:53,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:04:53,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:04:53,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604685472] [2024-11-23 23:04:53,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:53,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:04:53,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:04:53,556 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:04:53,556 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:04:53,557 INFO L87 Difference]: Start difference. First operand 116 states and 152 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 23:04:53,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:53,598 INFO L93 Difference]: Finished difference Result 214 states and 286 transitions. [2024-11-23 23:04:53,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:04:53,599 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 99 [2024-11-23 23:04:53,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:53,600 INFO L225 Difference]: With dead ends: 214 [2024-11-23 23:04:53,601 INFO L226 Difference]: Without dead ends: 117 [2024-11-23 23:04:53,601 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:04:53,602 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 0 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 351 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 [2024-11-23 23:04:53,602 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 351 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:04:53,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-23 23:04:53,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 116. [2024-11-23 23:04:53,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 80 states have (on average 1.2375) internal successors, (99), 82 states have internal predecessors, (99), 25 states have call successors, (25), 9 states have call predecessors, (25), 10 states have return successors, (27), 24 states have call predecessors, (27), 24 states have call successors, (27) [2024-11-23 23:04:53,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 151 transitions. [2024-11-23 23:04:53,626 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 151 transitions. Word has length 99 [2024-11-23 23:04:53,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:53,627 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 151 transitions. [2024-11-23 23:04:53,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 23:04:53,627 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 151 transitions. [2024-11-23 23:04:53,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-23 23:04:53,631 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:53,631 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:04:53,645 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-23 23:04:53,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:53,832 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:53,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:53,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1919374127, now seen corresponding path program 1 times [2024-11-23 23:04:53,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:04:53,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [892179725] [2024-11-23 23:04:53,833 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:53,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:53,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:04:53,836 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:04:53,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-23 23:04:54,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:54,028 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 23:04:54,030 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:04:54,070 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-23 23:04:54,070 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:04:54,070 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:04:54,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892179725] [2024-11-23 23:04:54,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892179725] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:54,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:04:54,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:04:54,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049558899] [2024-11-23 23:04:54,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:54,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:04:54,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:04:54,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:04:54,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:04:54,073 INFO L87 Difference]: Start difference. First operand 116 states and 151 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 23:04:54,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:54,114 INFO L93 Difference]: Finished difference Result 213 states and 285 transitions. [2024-11-23 23:04:54,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:04:54,115 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 99 [2024-11-23 23:04:54,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:54,116 INFO L225 Difference]: With dead ends: 213 [2024-11-23 23:04:54,116 INFO L226 Difference]: Without dead ends: 116 [2024-11-23 23:04:54,117 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:04:54,117 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 0 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 352 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 [2024-11-23 23:04:54,118 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 352 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:04:54,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-23 23:04:54,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 113. [2024-11-23 23:04:54,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 77 states have (on average 1.2207792207792207) internal successors, (94), 79 states have internal predecessors, (94), 25 states have call successors, (25), 9 states have call predecessors, (25), 10 states have return successors, (27), 24 states have call predecessors, (27), 24 states have call successors, (27) [2024-11-23 23:04:54,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 146 transitions. [2024-11-23 23:04:54,131 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 146 transitions. Word has length 99 [2024-11-23 23:04:54,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:54,131 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 146 transitions. [2024-11-23 23:04:54,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 23:04:54,132 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 146 transitions. [2024-11-23 23:04:54,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-23 23:04:54,133 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:54,133 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:04:54,144 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-23 23:04:54,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:54,334 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:54,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:54,334 INFO L85 PathProgramCache]: Analyzing trace with hash 2115142041, now seen corresponding path program 1 times [2024-11-23 23:04:54,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:04:54,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1815199519] [2024-11-23 23:04:54,335 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:54,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:54,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:04:54,337 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:04:54,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-23 23:04:54,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:54,548 INFO L256 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-23 23:04:54,552 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:04:54,619 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 [2024-11-23 23:04:57,213 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-23 23:04:57,213 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:05:02,365 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 23:05:02,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 29 [2024-11-23 23:05:06,537 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-23 23:05:06,537 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:05:06,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815199519] [2024-11-23 23:05:06,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815199519] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:05:06,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:05:06,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 21 [2024-11-23 23:05:06,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754460262] [2024-11-23 23:05:06,538 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 23:05:06,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-23 23:05:06,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:05:06,539 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-23 23:05:06,539 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2024-11-23 23:05:06,539 INFO L87 Difference]: Start difference. First operand 113 states and 146 transitions. Second operand has 21 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 9 states have call successors, (25), 5 states have call predecessors, (25), 6 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) [2024-11-23 23:05:11,417 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] [2024-11-23 23:05:15,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:05:20,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:05:24,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:05:28,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:05:33,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:05:33,939 INFO L93 Difference]: Finished difference Result 273 states and 346 transitions. [2024-11-23 23:05:33,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-23 23:05:33,940 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 9 states have call successors, (25), 5 states have call predecessors, (25), 6 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) Word has length 100 [2024-11-23 23:05:33,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:05:33,942 INFO L225 Difference]: With dead ends: 273 [2024-11-23 23:05:33,942 INFO L226 Difference]: Without dead ends: 182 [2024-11-23 23:05:33,944 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 174 SyntacticMatches, 7 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=189, Invalid=933, Unknown=0, NotChecked=0, Total=1122 [2024-11-23 23:05:33,945 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 127 mSDsluCounter, 1174 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 49 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 1293 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:05:33,945 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 1293 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 736 Invalid, 5 Unknown, 0 Unchecked, 25.9s Time] [2024-11-23 23:05:33,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-23 23:05:33,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 174. [2024-11-23 23:05:33,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 129 states have (on average 1.2170542635658914) internal successors, (157), 131 states have internal predecessors, (157), 28 states have call successors, (28), 15 states have call predecessors, (28), 16 states have return successors, (31), 27 states have call predecessors, (31), 27 states have call successors, (31) [2024-11-23 23:05:33,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 216 transitions. [2024-11-23 23:05:33,974 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 216 transitions. Word has length 100 [2024-11-23 23:05:33,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:05:33,975 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 216 transitions. [2024-11-23 23:05:33,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 9 states have call successors, (25), 5 states have call predecessors, (25), 6 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) [2024-11-23 23:05:33,975 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 216 transitions. [2024-11-23 23:05:33,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-23 23:05:33,977 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:05:33,977 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:05:33,992 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-23 23:05:34,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:05:34,181 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:05:34,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:05:34,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1305795415, now seen corresponding path program 1 times [2024-11-23 23:05:34,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:05:34,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [903927460] [2024-11-23 23:05:34,183 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:05:34,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:05:34,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:05:34,185 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:05:34,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389c5704-da44-475b-91a7-3376a417c507/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-23 23:05:34,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:05:34,424 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-23 23:05:34,429 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:05:34,752 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-23 23:05:34,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 23:05:34,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1