./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_remove_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be41db2d-0be1-4d56-9db3-095904f42c45/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be41db2d-0be1-4d56-9db3-095904f42c45/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be41db2d-0be1-4d56-9db3-095904f42c45/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be41db2d-0be1-4d56-9db3-095904f42c45/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_remove_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be41db2d-0be1-4d56-9db3-095904f42c45/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be41db2d-0be1-4d56-9db3-095904f42c45/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 59c6b72a732d91c045894268c659507998ee445c19bfbe580f6574a50ad495ad --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:39:31,831 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:39:31,966 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be41db2d-0be1-4d56-9db3-095904f42c45/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-28 03:39:31,972 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:39:31,972 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:39:32,001 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:39:32,002 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:39:32,002 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:39:32,003 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:39:32,003 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:39:32,003 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:39:32,003 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:39:32,004 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:39:32,004 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:39:32,004 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:39:32,004 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:39:32,004 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:39:32,006 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:39:32,007 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:39:32,007 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:39:32,007 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:39:32,007 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:39:32,007 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:39:32,007 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:39:32,007 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:39:32,008 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:39:32,008 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:39:32,008 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:39:32,008 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:39:32,008 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:39:32,008 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:39:32,009 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:39:32,009 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:39:32,009 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:39:32,009 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:39:32,009 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:39:32,009 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:39:32,010 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:39:32,010 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:39:32,010 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:39:32,012 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:39:32,012 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:39:32,012 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:39:32,012 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:39:32,013 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:39:32,013 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_be41db2d-0be1-4d56-9db3-095904f42c45/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 59c6b72a732d91c045894268c659507998ee445c19bfbe580f6574a50ad495ad [2024-11-28 03:39:32,416 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:39:32,432 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:39:32,435 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:39:32,437 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:39:32,437 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:39:32,439 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be41db2d-0be1-4d56-9db3-095904f42c45/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/aws-c-common/aws_linked_list_remove_harness_negated.i [2024-11-28 03:39:36,217 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be41db2d-0be1-4d56-9db3-095904f42c45/bin/uautomizer-verify-aQ6SnzHsRB/data/89f7a8bc9/7fb54620778b413f8e80d336b3d69786/FLAG0d5879f6d [2024-11-28 03:39:36,906 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:39:36,907 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be41db2d-0be1-4d56-9db3-095904f42c45/sv-benchmarks/c/aws-c-common/aws_linked_list_remove_harness_negated.i [2024-11-28 03:39:36,965 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be41db2d-0be1-4d56-9db3-095904f42c45/bin/uautomizer-verify-aQ6SnzHsRB/data/89f7a8bc9/7fb54620778b413f8e80d336b3d69786/FLAG0d5879f6d [2024-11-28 03:39:37,293 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be41db2d-0be1-4d56-9db3-095904f42c45/bin/uautomizer-verify-aQ6SnzHsRB/data/89f7a8bc9/7fb54620778b413f8e80d336b3d69786 [2024-11-28 03:39:37,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:39:37,297 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:39:37,299 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:39:37,300 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:39:37,305 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:39:37,306 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:39:37" (1/1) ... [2024-11-28 03:39:37,307 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b53f2df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:37, skipping insertion in model container [2024-11-28 03:39:37,308 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:39:37" (1/1) ... [2024-11-28 03:39:37,410 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:39:37,681 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_be41db2d-0be1-4d56-9db3-095904f42c45/sv-benchmarks/c/aws-c-common/aws_linked_list_remove_harness_negated.i[4496,4509] [2024-11-28 03:39:37,692 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_be41db2d-0be1-4d56-9db3-095904f42c45/sv-benchmarks/c/aws-c-common/aws_linked_list_remove_harness_negated.i[4556,4569] [2024-11-28 03:39:38,716 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:38,717 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:38,718 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:38,719 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:38,720 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:38,741 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:38,742 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:38,745 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:38,745 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:38,748 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:38,750 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:38,751 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:38,751 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:39,527 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_be41db2d-0be1-4d56-9db3-095904f42c45/sv-benchmarks/c/aws-c-common/aws_linked_list_remove_harness_negated.i[150856,150869] [2024-11-28 03:39:39,528 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:39:39,562 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:39:39,587 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_be41db2d-0be1-4d56-9db3-095904f42c45/sv-benchmarks/c/aws-c-common/aws_linked_list_remove_harness_negated.i[4496,4509] [2024-11-28 03:39:39,588 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_be41db2d-0be1-4d56-9db3-095904f42c45/sv-benchmarks/c/aws-c-common/aws_linked_list_remove_harness_negated.i[4556,4569] [2024-11-28 03:39:39,673 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:39,674 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:39,674 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:39,675 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:39,676 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:39,729 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:39,732 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:39,733 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:39,734 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:39,735 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:39,736 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:39,737 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:39,737 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:39,887 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_be41db2d-0be1-4d56-9db3-095904f42c45/sv-benchmarks/c/aws-c-common/aws_linked_list_remove_harness_negated.i[150856,150869] [2024-11-28 03:39:39,888 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:39:40,124 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:39:40,125 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:40 WrapperNode [2024-11-28 03:39:40,125 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:39:40,126 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:39:40,127 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:39:40,127 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:39:40,134 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:40" (1/1) ... [2024-11-28 03:39:40,203 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:40" (1/1) ... [2024-11-28 03:39:40,238 INFO L138 Inliner]: procedures = 668, calls = 1048, calls flagged for inlining = 50, calls inlined = 4, statements flattened = 86 [2024-11-28 03:39:40,239 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:39:40,239 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:39:40,239 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:39:40,239 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:39:40,250 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:40" (1/1) ... [2024-11-28 03:39:40,251 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:40" (1/1) ... [2024-11-28 03:39:40,255 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:40" (1/1) ... [2024-11-28 03:39:40,301 INFO L175 MemorySlicer]: Split 30 memory accesses to 3 slices as follows [2, 5, 23]. 77 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 7 writes are split as follows [0, 0, 7]. [2024-11-28 03:39:40,301 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:40" (1/1) ... [2024-11-28 03:39:40,302 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:40" (1/1) ... [2024-11-28 03:39:40,331 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:40" (1/1) ... [2024-11-28 03:39:40,332 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:40" (1/1) ... [2024-11-28 03:39:40,340 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:40" (1/1) ... [2024-11-28 03:39:40,350 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:40" (1/1) ... [2024-11-28 03:39:40,356 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:40" (1/1) ... [2024-11-28 03:39:40,367 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:39:40,370 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:39:40,371 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:39:40,371 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:39:40,373 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:40" (1/1) ... [2024-11-28 03:39:40,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:39:40,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be41db2d-0be1-4d56-9db3-095904f42c45/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:39:40,424 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be41db2d-0be1-4d56-9db3-095904f42c45/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:39:40,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be41db2d-0be1-4d56-9db3-095904f42c45/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:39:40,472 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2024-11-28 03:39:40,472 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2024-11-28 03:39:40,472 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_remove [2024-11-28 03:39:40,472 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_remove [2024-11-28 03:39:40,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 03:39:40,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 03:39:40,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 03:39:40,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 03:39:40,473 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 03:39:40,474 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 03:39:40,475 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2024-11-28 03:39:40,475 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2024-11-28 03:39:40,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:39:40,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 03:39:40,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 03:39:40,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-28 03:39:40,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:39:40,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:39:40,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-28 03:39:40,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-28 03:39:40,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-28 03:39:40,478 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-28 03:39:40,478 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-28 03:39:40,478 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-28 03:39:40,479 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 03:39:40,479 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 03:39:40,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 03:39:40,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 03:39:40,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 03:39:40,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 03:39:40,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 03:39:40,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-28 03:39:40,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-28 03:39:40,479 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2024-11-28 03:39:40,479 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2024-11-28 03:39:40,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:39:40,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 03:39:40,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 03:39:40,802 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:39:40,805 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:39:41,210 INFO L? ?]: Removed 48 outVars from TransFormulas that were not future-live. [2024-11-28 03:39:41,210 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:39:41,225 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:39:41,226 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 03:39:41,229 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:39:41 BoogieIcfgContainer [2024-11-28 03:39:41,230 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:39:41,234 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:39:41,235 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:39:41,241 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:39:41,241 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:39:37" (1/3) ... [2024-11-28 03:39:41,242 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@749b75d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:39:41, skipping insertion in model container [2024-11-28 03:39:41,242 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:40" (2/3) ... [2024-11-28 03:39:41,243 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@749b75d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:39:41, skipping insertion in model container [2024-11-28 03:39:41,243 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:39:41" (3/3) ... [2024-11-28 03:39:41,245 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_linked_list_remove_harness_negated.i [2024-11-28 03:39:41,266 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:39:41,268 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_linked_list_remove_harness_negated.i that has 10 procedures, 82 locations, 1 initial locations, 5 loop locations, and 1 error locations. [2024-11-28 03:39:41,339 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:39:41,355 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;@6ef630dc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:39:41,355 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:39:41,360 INFO L276 IsEmpty]: Start isEmpty. Operand has 74 states, 49 states have (on average 1.2653061224489797) internal successors, (62), 50 states have internal predecessors, (62), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-28 03:39:41,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-28 03:39:41,369 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:41,370 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:39:41,370 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:41,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:41,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1261586903, now seen corresponding path program 1 times [2024-11-28 03:39:41,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:41,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011471872] [2024-11-28 03:39:41,384 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:41,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:41,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:42,135 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 03:39:42,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:42,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011471872] [2024-11-28 03:39:42,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011471872] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:39:42,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064896839] [2024-11-28 03:39:42,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:42,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:39:42,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be41db2d-0be1-4d56-9db3-095904f42c45/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:39:42,141 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be41db2d-0be1-4d56-9db3-095904f42c45/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:39:42,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be41db2d-0be1-4d56-9db3-095904f42c45/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:39:42,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:42,583 INFO L256 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 03:39:42,590 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:39:42,610 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 03:39:42,610 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:39:42,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064896839] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:39:42,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:39:42,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 03:39:42,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624505192] [2024-11-28 03:39:42,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:42,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 03:39:42,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:42,649 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:39:42,649 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:39:42,653 INFO L87 Difference]: Start difference. First operand has 74 states, 49 states have (on average 1.2653061224489797) internal successors, (62), 50 states have internal predecessors, (62), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 03:39:42,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:42,694 INFO L93 Difference]: Finished difference Result 142 states and 195 transitions. [2024-11-28 03:39:42,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:39:42,697 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 48 [2024-11-28 03:39:42,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:42,708 INFO L225 Difference]: With dead ends: 142 [2024-11-28 03:39:42,708 INFO L226 Difference]: Without dead ends: 69 [2024-11-28 03:39:42,715 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:39:42,719 INFO L435 NwaCegarLoop]: 91 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:42,721 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:39:42,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-28 03:39:42,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-11-28 03:39:42,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 44 states have (on average 1.2045454545454546) internal successors, (53), 45 states have internal predecessors, (53), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 03:39:42,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 86 transitions. [2024-11-28 03:39:42,770 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 86 transitions. Word has length 48 [2024-11-28 03:39:42,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:42,771 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 86 transitions. [2024-11-28 03:39:42,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 03:39:42,772 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 86 transitions. [2024-11-28 03:39:42,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-28 03:39:42,775 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:42,775 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:39:42,788 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be41db2d-0be1-4d56-9db3-095904f42c45/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:39:42,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be41db2d-0be1-4d56-9db3-095904f42c45/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 03:39:42,976 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:42,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:42,977 INFO L85 PathProgramCache]: Analyzing trace with hash -924444086, now seen corresponding path program 1 times [2024-11-28 03:39:42,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:42,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311874971] [2024-11-28 03:39:42,977 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:42,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:43,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:43,793 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 03:39:43,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:43,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311874971] [2024-11-28 03:39:43,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311874971] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:39:43,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:39:43,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:39:43,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350396040] [2024-11-28 03:39:43,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:43,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:39:43,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:43,798 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:39:43,798 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:39:43,798 INFO L87 Difference]: Start difference. First operand 69 states and 86 transitions. Second operand has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 03:39:44,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:44,023 INFO L93 Difference]: Finished difference Result 139 states and 173 transitions. [2024-11-28 03:39:44,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:39:44,027 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 54 [2024-11-28 03:39:44,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:44,030 INFO L225 Difference]: With dead ends: 139 [2024-11-28 03:39:44,031 INFO L226 Difference]: Without dead ends: 78 [2024-11-28 03:39:44,032 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:39:44,033 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 26 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:44,034 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 416 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:39:44,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-28 03:39:44,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 74. [2024-11-28 03:39:44,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 48 states have (on average 1.2083333333333333) internal successors, (58), 50 states have internal predecessors, (58), 17 states have call successors, (17), 7 states have call predecessors, (17), 8 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) [2024-11-28 03:39:44,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 92 transitions. [2024-11-28 03:39:44,063 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 92 transitions. Word has length 54 [2024-11-28 03:39:44,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:44,063 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 92 transitions. [2024-11-28 03:39:44,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 03:39:44,064 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 92 transitions. [2024-11-28 03:39:44,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-28 03:39:44,066 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:44,066 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:39:44,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:39:44,066 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:44,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:44,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1319539212, now seen corresponding path program 1 times [2024-11-28 03:39:44,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:44,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208290213] [2024-11-28 03:39:44,068 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:44,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:44,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:44,817 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 03:39:44,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:44,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208290213] [2024-11-28 03:39:44,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208290213] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:39:44,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:39:44,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:39:44,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23250094] [2024-11-28 03:39:44,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:44,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:39:44,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:44,821 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:39:44,821 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:39:44,821 INFO L87 Difference]: Start difference. First operand 74 states and 92 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 03:39:44,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:44,872 INFO L93 Difference]: Finished difference Result 131 states and 163 transitions. [2024-11-28 03:39:44,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:39:44,874 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 54 [2024-11-28 03:39:44,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:44,876 INFO L225 Difference]: With dead ends: 131 [2024-11-28 03:39:44,876 INFO L226 Difference]: Without dead ends: 75 [2024-11-28 03:39:44,876 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:39:44,880 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 0 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:44,880 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 250 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:39:44,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-28 03:39:44,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-11-28 03:39:44,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 49 states have (on average 1.2040816326530612) internal successors, (59), 51 states have internal predecessors, (59), 17 states have call successors, (17), 7 states have call predecessors, (17), 8 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) [2024-11-28 03:39:44,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 93 transitions. [2024-11-28 03:39:44,895 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 93 transitions. Word has length 54 [2024-11-28 03:39:44,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:44,896 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 93 transitions. [2024-11-28 03:39:44,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 03:39:44,896 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 93 transitions. [2024-11-28 03:39:44,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-28 03:39:44,898 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:44,898 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:39:44,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:39:44,899 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:44,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:44,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1094761730, now seen corresponding path program 1 times [2024-11-28 03:39:44,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:44,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490879105] [2024-11-28 03:39:44,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:44,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:45,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:45,580 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 03:39:45,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:45,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490879105] [2024-11-28 03:39:45,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490879105] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:39:45,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081135624] [2024-11-28 03:39:45,580 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:45,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:39:45,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be41db2d-0be1-4d56-9db3-095904f42c45/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:39:45,585 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be41db2d-0be1-4d56-9db3-095904f42c45/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:39:45,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be41db2d-0be1-4d56-9db3-095904f42c45/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:39:45,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:45,914 INFO L256 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 03:39:45,918 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:39:46,027 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 03:39:46,027 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:39:46,200 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 03:39:46,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081135624] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 03:39:46,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:39:46,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 6] total 10 [2024-11-28 03:39:46,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603280033] [2024-11-28 03:39:46,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:46,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:39:46,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:46,202 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:39:46,202 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:39:46,203 INFO L87 Difference]: Start difference. First operand 75 states and 93 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-28 03:39:46,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:46,258 INFO L93 Difference]: Finished difference Result 125 states and 155 transitions. [2024-11-28 03:39:46,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:39:46,261 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 55 [2024-11-28 03:39:46,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:46,263 INFO L225 Difference]: With dead ends: 125 [2024-11-28 03:39:46,263 INFO L226 Difference]: Without dead ends: 78 [2024-11-28 03:39:46,263 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:39:46,264 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 4 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:46,265 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 161 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:39:46,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-28 03:39:46,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2024-11-28 03:39:46,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 50 states have (on average 1.2) internal successors, (60), 52 states have internal predecessors, (60), 17 states have call successors, (17), 7 states have call predecessors, (17), 8 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) [2024-11-28 03:39:46,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 94 transitions. [2024-11-28 03:39:46,291 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 94 transitions. Word has length 55 [2024-11-28 03:39:46,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:46,294 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 94 transitions. [2024-11-28 03:39:46,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-28 03:39:46,294 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 94 transitions. [2024-11-28 03:39:46,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-28 03:39:46,297 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:46,298 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:39:46,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be41db2d-0be1-4d56-9db3-095904f42c45/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 03:39:46,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be41db2d-0be1-4d56-9db3-095904f42c45/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:39:46,498 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:46,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:46,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1056874079, now seen corresponding path program 1 times [2024-11-28 03:39:46,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:46,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909304112] [2024-11-28 03:39:46,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:46,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:46,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:47,267 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 03:39:47,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:47,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909304112] [2024-11-28 03:39:47,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909304112] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:39:47,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:39:47,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:39:47,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540860818] [2024-11-28 03:39:47,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:47,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:39:47,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:47,272 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:39:47,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:39:47,273 INFO L87 Difference]: Start difference. First operand 76 states and 94 transitions. Second operand has 6 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-28 03:39:47,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:47,362 INFO L93 Difference]: Finished difference Result 86 states and 104 transitions. [2024-11-28 03:39:47,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:39:47,363 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 56 [2024-11-28 03:39:47,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:47,365 INFO L225 Difference]: With dead ends: 86 [2024-11-28 03:39:47,365 INFO L226 Difference]: Without dead ends: 84 [2024-11-28 03:39:47,366 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:39:47,370 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 3 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:47,371 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 404 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:39:47,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-28 03:39:47,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2024-11-28 03:39:47,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 57 states have internal predecessors, (64), 18 states have call successors, (18), 8 states have call predecessors, (18), 10 states have return successors, (19), 17 states have call predecessors, (19), 17 states have call successors, (19) [2024-11-28 03:39:47,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 101 transitions. [2024-11-28 03:39:47,393 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 101 transitions. Word has length 56 [2024-11-28 03:39:47,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:47,395 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 101 transitions. [2024-11-28 03:39:47,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-28 03:39:47,395 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 101 transitions. [2024-11-28 03:39:47,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-28 03:39:47,397 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:47,397 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:39:47,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:39:47,397 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:47,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:47,398 INFO L85 PathProgramCache]: Analyzing trace with hash 148795244, now seen corresponding path program 1 times [2024-11-28 03:39:47,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:47,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263403648] [2024-11-28 03:39:47,399 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:47,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:47,978 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 03:39:47,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:47,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263403648] [2024-11-28 03:39:47,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263403648] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:39:47,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936343878] [2024-11-28 03:39:47,980 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:47,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:39:47,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be41db2d-0be1-4d56-9db3-095904f42c45/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:39:47,983 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be41db2d-0be1-4d56-9db3-095904f42c45/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:39:47,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be41db2d-0be1-4d56-9db3-095904f42c45/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:39:48,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:48,363 INFO L256 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 03:39:48,366 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:39:48,422 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 03:39:48,423 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:39:48,584 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 03:39:48,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936343878] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:39:48,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:39:48,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-28 03:39:48,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020427295] [2024-11-28 03:39:48,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:39:48,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 03:39:48,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:48,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 03:39:48,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:39:48,587 INFO L87 Difference]: Start difference. First operand 83 states and 101 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 2 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 03:39:48,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:48,761 INFO L93 Difference]: Finished difference Result 152 states and 186 transitions. [2024-11-28 03:39:48,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:39:48,762 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 2 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 58 [2024-11-28 03:39:48,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:48,764 INFO L225 Difference]: With dead ends: 152 [2024-11-28 03:39:48,765 INFO L226 Difference]: Without dead ends: 86 [2024-11-28 03:39:48,765 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:39:48,769 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 0 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:48,770 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 254 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:39:48,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-28 03:39:48,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2024-11-28 03:39:48,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 57 states have (on average 1.1754385964912282) internal successors, (67), 60 states have internal predecessors, (67), 18 states have call successors, (18), 8 states have call predecessors, (18), 10 states have return successors, (19), 17 states have call predecessors, (19), 17 states have call successors, (19) [2024-11-28 03:39:48,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 104 transitions. [2024-11-28 03:39:48,788 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 104 transitions. Word has length 58 [2024-11-28 03:39:48,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:48,789 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 104 transitions. [2024-11-28 03:39:48,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 2 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 03:39:48,790 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 104 transitions. [2024-11-28 03:39:48,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-28 03:39:48,791 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:48,791 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:39:48,808 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be41db2d-0be1-4d56-9db3-095904f42c45/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 03:39:48,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be41db2d-0be1-4d56-9db3-095904f42c45/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-28 03:39:48,995 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:48,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:48,996 INFO L85 PathProgramCache]: Analyzing trace with hash -2085347042, now seen corresponding path program 2 times [2024-11-28 03:39:48,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:48,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803289917] [2024-11-28 03:39:48,996 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:39:48,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:49,126 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:39:49,127 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:39:49,622 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 03:39:49,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:49,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803289917] [2024-11-28 03:39:49,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803289917] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:39:49,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079845218] [2024-11-28 03:39:49,625 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:39:49,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:39:49,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be41db2d-0be1-4d56-9db3-095904f42c45/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:39:49,632 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be41db2d-0be1-4d56-9db3-095904f42c45/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:39:49,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be41db2d-0be1-4d56-9db3-095904f42c45/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:39:50,073 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:39:50,074 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:39:50,077 INFO L256 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 03:39:50,083 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:39:50,248 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-28 03:39:50,249 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:39:50,493 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 03:39:50,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079845218] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:39:50,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:39:50,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 5] total 16 [2024-11-28 03:39:50,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144511689] [2024-11-28 03:39:50,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:39:50,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 03:39:50,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:50,495 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 03:39:50,496 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:39:50,496 INFO L87 Difference]: Start difference. First operand 86 states and 104 transitions. Second operand has 16 states, 16 states have (on average 4.0) internal successors, (64), 16 states have internal predecessors, (64), 2 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 03:39:50,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:50,945 INFO L93 Difference]: Finished difference Result 172 states and 210 transitions. [2024-11-28 03:39:50,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 03:39:50,947 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.0) internal successors, (64), 16 states have internal predecessors, (64), 2 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 61 [2024-11-28 03:39:50,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:50,949 INFO L225 Difference]: With dead ends: 172 [2024-11-28 03:39:50,950 INFO L226 Difference]: Without dead ends: 102 [2024-11-28 03:39:50,951 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2024-11-28 03:39:50,952 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 23 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:50,952 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 488 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:39:50,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-28 03:39:50,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 96. [2024-11-28 03:39:50,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 67 states have (on average 1.1940298507462686) internal successors, (80), 70 states have internal predecessors, (80), 18 states have call successors, (18), 8 states have call predecessors, (18), 10 states have return successors, (19), 17 states have call predecessors, (19), 17 states have call successors, (19) [2024-11-28 03:39:50,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 117 transitions. [2024-11-28 03:39:50,971 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 117 transitions. Word has length 61 [2024-11-28 03:39:50,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:50,972 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 117 transitions. [2024-11-28 03:39:50,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.0) internal successors, (64), 16 states have internal predecessors, (64), 2 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 03:39:50,972 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 117 transitions. [2024-11-28 03:39:50,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-28 03:39:50,974 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:50,974 INFO L218 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:39:50,987 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be41db2d-0be1-4d56-9db3-095904f42c45/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 03:39:51,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be41db2d-0be1-4d56-9db3-095904f42c45/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 03:39:51,175 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:51,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:51,175 INFO L85 PathProgramCache]: Analyzing trace with hash -2130941142, now seen corresponding path program 1 times [2024-11-28 03:39:51,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:51,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529709665] [2024-11-28 03:39:51,175 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:51,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:51,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:51,948 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 03:39:51,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:51,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529709665] [2024-11-28 03:39:51,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529709665] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:39:51,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060710334] [2024-11-28 03:39:51,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:51,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:39:51,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be41db2d-0be1-4d56-9db3-095904f42c45/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:39:51,951 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be41db2d-0be1-4d56-9db3-095904f42c45/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:39:51,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be41db2d-0be1-4d56-9db3-095904f42c45/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:39:52,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:52,334 INFO L256 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-28 03:39:52,345 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:39:52,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:39:52,528 INFO L349 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2024-11-28 03:39:52,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 77 [2024-11-28 03:39:52,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:39:52,624 INFO L349 Elim1Store]: treesize reduction 56, result has 23.3 percent of original size [2024-11-28 03:39:52,625 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 1 case distinctions, treesize of input 2913 treesize of output 2822 [2024-11-28 03:39:52,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:39:52,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-28 03:39:52,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 84 [2024-11-28 03:39:52,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-28 03:39:52,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-28 03:39:57,259 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((|v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_1| Int)) (and (<= 2 |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_1|) (exists ((|v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_1| Int)) (let ((.cse1 (select |c_#memory_$Pointer$#2.base| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_1|))) (let ((.cse0 (select .cse1 (+ |v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_1| 8)))) (and (exists ((|ULTIMATE.start_aws_linked_list_remove_harness_~#prev~0#1.offset| Int)) (= (select (select |c_#memory_$Pointer$#2.base| .cse0) |ULTIMATE.start_aws_linked_list_remove_harness_~#prev~0#1.offset|) |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_1|)) (not (= |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_1| .cse0)) (not (= .cse0 0)) (not (= |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_1| (select .cse1 |v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_1|))))))))) (exists ((|v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_1| Int)) (and (<= 2 |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_1|) (exists ((|v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_1| Int)) (let ((.cse2 (select |c_#memory_$Pointer$#2.base| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_1|))) (let ((.cse3 (select .cse2 (+ |v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_1| 8)))) (and (= (select .cse2 |v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_1|) .cse3) (not (= |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_1| .cse3)) (not (= .cse3 0))))))))) is different from true [2024-11-28 03:40:02,081 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((|v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_2| Int)) (and (exists ((|v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_2| Int)) (let ((.cse1 (select |c_#memory_$Pointer$#2.base| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_2|))) (let ((.cse0 (select .cse1 (+ |v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_2| 8)))) (and (not (= .cse0 0)) (exists ((|ULTIMATE.start_aws_linked_list_remove_harness_~#prev~0#1.offset| Int)) (= |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_2| (select (select |c_#memory_$Pointer$#2.base| .cse0) |ULTIMATE.start_aws_linked_list_remove_harness_~#prev~0#1.offset|))) (not (= |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_2| (select .cse1 |v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_2|))) (not (= |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_2| .cse0)))))) (<= 2 |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_2|))) (exists ((|v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_2| Int)) (and (exists ((|v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_2| Int)) (let ((.cse3 (select |c_#memory_$Pointer$#2.base| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_2|))) (let ((.cse2 (select .cse3 (+ |v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_2| 8)))) (and (not (= .cse2 0)) (= (select .cse3 |v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_2|) .cse2) (not (= |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_2| .cse2)))))) (<= 2 |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_2|)))) is different from true [2024-11-28 03:40:06,919 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((|v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_3| Int)) (and (exists ((|v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_3| Int)) (let ((.cse1 (select |c_#memory_$Pointer$#2.base| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_3|))) (let ((.cse0 (select .cse1 (+ |v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_3| 8)))) (and (not (= .cse0 0)) (= .cse0 (select .cse1 |v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_3|)) (not (= |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_3| .cse0)))))) (<= 2 |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_3|))) (exists ((|v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_3| Int)) (and (exists ((|v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_3| Int)) (let ((.cse3 (select |c_#memory_$Pointer$#2.base| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_3|))) (let ((.cse2 (select .cse3 (+ |v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_3| 8)))) (and (not (= .cse2 0)) (exists ((|ULTIMATE.start_aws_linked_list_remove_harness_~#prev~0#1.offset| Int)) (= |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_3| (select (select |c_#memory_$Pointer$#2.base| .cse2) |ULTIMATE.start_aws_linked_list_remove_harness_~#prev~0#1.offset|))) (not (= |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_3| .cse2)) (not (= |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_3| (select .cse3 |v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_3|))))))) (<= 2 |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_3|)))) is different from true [2024-11-28 03:40:12,122 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((|v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_4| Int)) (and (<= 2 |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_4|) (exists ((|v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_4| Int)) (let ((.cse1 (select |c_#memory_$Pointer$#2.base| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_4|))) (let ((.cse0 (select .cse1 (+ |v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_4| 8)))) (and (not (= .cse0 0)) (not (= |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_4| .cse0)) (= .cse0 (select .cse1 |v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_4|)))))))) (exists ((|v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_4| Int)) (and (<= 2 |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_4|) (exists ((|v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_4| Int)) (let ((.cse3 (select |c_#memory_$Pointer$#2.base| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_4|))) (let ((.cse2 (select .cse3 (+ |v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_4| 8)))) (and (not (= .cse2 0)) (exists ((|ULTIMATE.start_aws_linked_list_remove_harness_~#prev~0#1.offset| Int)) (= |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_4| (select (select |c_#memory_$Pointer$#2.base| .cse2) |ULTIMATE.start_aws_linked_list_remove_harness_~#prev~0#1.offset|))) (not (= |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_4| .cse2)) (not (= |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_4| (select .cse3 |v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_4|)))))))))) is different from true [2024-11-28 03:40:12,921 INFO L349 Elim1Store]: treesize reduction 92, result has 15.6 percent of original size [2024-11-28 03:40:12,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 152 treesize of output 167 [2024-11-28 03:40:12,940 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 03:40:12,959 INFO L349 Elim1Store]: treesize reduction 27, result has 37.2 percent of original size [2024-11-28 03:40:12,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 39 [2024-11-28 03:40:12,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 30 [2024-11-28 03:40:13,039 INFO L349 Elim1Store]: treesize reduction 152, result has 10.1 percent of original size [2024-11-28 03:40:13,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 7 new quantified variables, introduced 7 case distinctions, treesize of input 203 treesize of output 208 [2024-11-28 03:40:13,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-28 03:40:13,388 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((|v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_1| Int)) (and (<= 2 |v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_1|) (exists ((|v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_5| Int)) (let ((.cse6 (select |c_#memory_$Pointer$#2.base| |v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_1|))) (let ((.cse1 (select .cse6 |v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_5|)) (.cse0 (select .cse6 (+ |v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_5| 8)))) (and (not (= .cse0 0)) (not (= |v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_1| .cse1)) (exists ((v_DerPreprocessor_5 (Array Int Int)) (v_DerPreprocessor_6 (Array Int Int))) (let ((.cse2 (select |c_#memory_$Pointer$#2.base| .cse0))) (let ((.cse4 (let ((.cse5 (select .cse2 |v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_5|))) (store (store (store |c_#memory_$Pointer$#2.base| .cse1 v_DerPreprocessor_5) .cse0 v_DerPreprocessor_6) .cse5 (select |c_#memory_$Pointer$#2.base| .cse5))))) (let ((.cse3 (select .cse4 .cse0))) (and (= .cse2 .cse3) (= .cse3 v_DerPreprocessor_6) (= (select .cse4 .cse1) v_DerPreprocessor_5)))))) (not (= .cse0 |v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_1|)))))))) (exists ((|v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_1| Int)) (and (<= 2 |v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_1|) (exists ((|v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_5| Int)) (let ((.cse9 (select |c_#memory_$Pointer$#2.base| |v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_1|))) (let ((.cse7 (select .cse9 (+ |v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_5| 8))) (.cse8 (select .cse9 |v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_5|))) (and (not (= .cse7 0)) (not (= |v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_1| .cse8)) (= .cse7 .cse8)))))))) is different from true [2024-11-28 03:40:23,407 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_#Ultimate.C_memset#2_#t~loopctr688_30| Int) (|v_#Ultimate.C_memset#2_#t~loopctr688_31| Int) (|v_#Ultimate.C_memset#2_#t~loopctr688_27| Int) (|v_#Ultimate.C_memset#2_#t~loopctr688_28| Int) (|v_#Ultimate.C_memset#2_#t~loopctr688_29| Int)) (and (<= |v_#Ultimate.C_memset#2_#t~loopctr688_30| (+ |v_#Ultimate.C_memset#2_#t~loopctr688_29| 1)) (<= |v_#Ultimate.C_memset#2_#t~loopctr688_29| (+ |v_#Ultimate.C_memset#2_#t~loopctr688_28| 1)) (<= |v_#Ultimate.C_memset#2_#t~loopctr688_27| 0) (<= |v_#Ultimate.C_memset#2_#t~loopctr688_31| (+ |v_#Ultimate.C_memset#2_#t~loopctr688_30| 1)) (= (store |c_old(#memory_$Pointer$#2.base)| |c_#Ultimate.C_memset#2_#ptr.base| (store (store (store (store (store (select |c_old(#memory_$Pointer$#2.base)| |c_#Ultimate.C_memset#2_#ptr.base|) (+ |v_#Ultimate.C_memset#2_#t~loopctr688_27| |c_#Ultimate.C_memset#2_#ptr.offset|) 0) (+ |v_#Ultimate.C_memset#2_#t~loopctr688_28| |c_#Ultimate.C_memset#2_#ptr.offset|) 0) (+ |v_#Ultimate.C_memset#2_#t~loopctr688_29| |c_#Ultimate.C_memset#2_#ptr.offset|) 0) (+ |v_#Ultimate.C_memset#2_#t~loopctr688_30| |c_#Ultimate.C_memset#2_#ptr.offset|) 0) (+ |v_#Ultimate.C_memset#2_#t~loopctr688_31| |c_#Ultimate.C_memset#2_#ptr.offset|) 0)) |c_#memory_$Pointer$#2.base|) (<= |v_#Ultimate.C_memset#2_#t~loopctr688_28| (+ |v_#Ultimate.C_memset#2_#t~loopctr688_27| 1)))) is different from true [2024-11-28 03:40:23,904 INFO L349 Elim1Store]: treesize reduction 342, result has 21.0 percent of original size [2024-11-28 03:40:23,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 27 case distinctions, treesize of input 704 treesize of output 483 [2024-11-28 03:40:25,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:40:25,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:40:25,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:40:25,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:40:25,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:40:26,048 INFO L349 Elim1Store]: treesize reduction 324, result has 17.8 percent of original size [2024-11-28 03:40:26,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 79 treesize of output 114 [2024-11-28 03:40:26,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:40:26,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:40:26,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:40:26,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:40:26,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:40:26,582 INFO L349 Elim1Store]: treesize reduction 324, result has 17.8 percent of original size [2024-11-28 03:40:26,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 79 treesize of output 114 [2024-11-28 03:40:27,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:40:27,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:40:27,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:40:27,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:40:27,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:40:27,788 INFO L349 Elim1Store]: treesize reduction 622, result has 21.1 percent of original size [2024-11-28 03:40:27,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 12 case distinctions, treesize of input 101 treesize of output 222 [2024-11-28 03:40:29,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:40:29,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:40:29,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:40:29,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:40:29,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:40:30,280 INFO L349 Elim1Store]: treesize reduction 728, result has 7.6 percent of original size [2024-11-28 03:40:30,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 12 case distinctions, treesize of input 102 treesize of output 115 [2024-11-28 03:40:30,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:40:30,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:40:30,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:40:30,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:40:30,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:40:31,224 INFO L349 Elim1Store]: treesize reduction 350, result has 11.2 percent of original size [2024-11-28 03:40:31,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 79 treesize of output 88 [2024-11-28 03:41:39,817 WARN L286 SmtUtils]: Spent 6.16s on a formula simplification that was a NOOP. DAG size: 724 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 03:43:08,325 WARN L286 SmtUtils]: Spent 21.92s on a formula simplification that was a NOOP. DAG size: 1228 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 03:44:20,041 WARN L286 SmtUtils]: Spent 26.46s on a formula simplification that was a NOOP. DAG size: 1361 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 03:47:09,068 WARN L286 SmtUtils]: Spent 57.85s on a formula simplification that was a NOOP. DAG size: 1864 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)