./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_satisfies_pred_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81b11da-9e0c-4a87-a3b9-c8119d2fa710/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81b11da-9e0c-4a87-a3b9-c8119d2fa710/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81b11da-9e0c-4a87-a3b9-c8119d2fa710/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81b11da-9e0c-4a87-a3b9-c8119d2fa710/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_satisfies_pred_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81b11da-9e0c-4a87-a3b9-c8119d2fa710/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81b11da-9e0c-4a87-a3b9-c8119d2fa710/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 619e3270d5adfd11a49dc21b1c9a733f3c07a99bdf8d5a5bb21e85f44a2545b1 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:33:55,879 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:33:55,974 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81b11da-9e0c-4a87-a3b9-c8119d2fa710/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-23 23:33:55,981 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:33:55,982 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:33:56,020 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:33:56,021 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:33:56,021 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:33:56,021 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:33:56,021 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:33:56,022 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:33:56,022 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:33:56,022 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:33:56,022 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:33:56,022 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:33:56,022 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:33:56,022 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:33:56,023 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:33:56,023 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:33:56,023 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:33:56,023 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:33:56,023 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:33:56,023 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:33:56,023 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:33:56,023 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:33:56,024 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:33:56,024 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:33:56,024 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:33:56,024 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:33:56,024 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:33:56,024 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:33:56,024 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:33:56,024 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:33:56,025 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:33:56,026 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:33:56,026 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:33:56,027 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:33:56,027 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:33:56,027 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:33:56,027 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:33:56,027 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:33:56,027 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:33:56,027 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:33:56,027 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:33:56,028 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:33:56,028 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_c81b11da-9e0c-4a87-a3b9-c8119d2fa710/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 619e3270d5adfd11a49dc21b1c9a733f3c07a99bdf8d5a5bb21e85f44a2545b1 [2024-11-23 23:33:56,354 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:33:56,366 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:33:56,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:33:56,373 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:33:56,373 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:33:56,375 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81b11da-9e0c-4a87-a3b9-c8119d2fa710/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_satisfies_pred_harness.i [2024-11-23 23:33:59,308 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81b11da-9e0c-4a87-a3b9-c8119d2fa710/bin/uautomizer-verify-LYvppIcaGC/data/dfea9442a/074c0381d4a64511a6a0f75a4216a82d/FLAGbf58965a2 [2024-11-23 23:34:00,124 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:34:00,127 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81b11da-9e0c-4a87-a3b9-c8119d2fa710/sv-benchmarks/c/aws-c-common/aws_byte_cursor_satisfies_pred_harness.i [2024-11-23 23:34:00,187 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81b11da-9e0c-4a87-a3b9-c8119d2fa710/bin/uautomizer-verify-LYvppIcaGC/data/dfea9442a/074c0381d4a64511a6a0f75a4216a82d/FLAGbf58965a2 [2024-11-23 23:34:00,209 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81b11da-9e0c-4a87-a3b9-c8119d2fa710/bin/uautomizer-verify-LYvppIcaGC/data/dfea9442a/074c0381d4a64511a6a0f75a4216a82d [2024-11-23 23:34:00,213 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:34:00,214 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:34:00,216 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:34:00,217 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:34:00,229 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:34:00,230 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:34:00" (1/1) ... [2024-11-23 23:34:00,231 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22ad4388 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:34:00, skipping insertion in model container [2024-11-23 23:34:00,231 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:34:00" (1/1) ... [2024-11-23 23:34:00,363 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:34:00,673 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_c81b11da-9e0c-4a87-a3b9-c8119d2fa710/sv-benchmarks/c/aws-c-common/aws_byte_cursor_satisfies_pred_harness.i[4504,4517] [2024-11-23 23:34:00,682 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_c81b11da-9e0c-4a87-a3b9-c8119d2fa710/sv-benchmarks/c/aws-c-common/aws_byte_cursor_satisfies_pred_harness.i[4564,4577] [2024-11-23 23:34:01,837 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:34:01,837 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:34:01,838 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:34:01,839 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:34:01,840 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:34:01,856 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:34:01,856 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:34:01,858 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:34:01,859 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:34:02,739 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:34:02,740 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:34:02,818 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:34:02,884 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:34:02,907 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_c81b11da-9e0c-4a87-a3b9-c8119d2fa710/sv-benchmarks/c/aws-c-common/aws_byte_cursor_satisfies_pred_harness.i[4504,4517] [2024-11-23 23:34:02,908 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_c81b11da-9e0c-4a87-a3b9-c8119d2fa710/sv-benchmarks/c/aws-c-common/aws_byte_cursor_satisfies_pred_harness.i[4564,4577] [2024-11-23 23:34:02,977 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:34:02,977 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:34:02,977 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:34:02,978 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:34:02,978 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:34:02,985 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:34:02,986 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:34:02,987 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:34:02,987 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:34:03,156 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8271] [2024-11-23 23:34:03,157 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:34:03,158 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:34:03,174 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8757-8768] [2024-11-23 23:34:03,188 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:34:03,465 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:34:03,466 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:34:03 WrapperNode [2024-11-23 23:34:03,466 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:34:03,467 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:34:03,468 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:34:03,468 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:34:03,474 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:34:03" (1/1) ... [2024-11-23 23:34:03,578 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:34:03" (1/1) ... [2024-11-23 23:34:03,677 INFO L138 Inliner]: procedures = 679, calls = 2610, calls flagged for inlining = 62, calls inlined = 9, statements flattened = 814 [2024-11-23 23:34:03,677 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:34:03,678 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:34:03,678 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:34:03,678 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:34:03,699 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:34:03" (1/1) ... [2024-11-23 23:34:03,699 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:34:03" (1/1) ... [2024-11-23 23:34:03,710 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:34:03" (1/1) ... [2024-11-23 23:34:03,810 INFO L175 MemorySlicer]: Split 540 memory accesses to 8 slices as follows [2, 257, 238, 3, 26, 3, 6, 5]. 48 percent of accesses are in the largest equivalence class. The 19 initializations are split as follows [2, 0, 6, 2, 4, 0, 0, 5]. The 494 writes are split as follows [0, 257, 232, 0, 3, 0, 2, 0]. [2024-11-23 23:34:03,810 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:34:03" (1/1) ... [2024-11-23 23:34:03,811 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:34:03" (1/1) ... [2024-11-23 23:34:03,875 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:34:03" (1/1) ... [2024-11-23 23:34:03,879 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:34:03" (1/1) ... [2024-11-23 23:34:03,890 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:34:03" (1/1) ... [2024-11-23 23:34:03,901 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:34:03" (1/1) ... [2024-11-23 23:34:03,908 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:34:03" (1/1) ... [2024-11-23 23:34:03,927 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:34:03,928 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:34:03,932 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:34:03,932 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:34:03,933 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:34:03" (1/1) ... [2024-11-23 23:34:03,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:34:03,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81b11da-9e0c-4a87-a3b9-c8119d2fa710/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:34:03,969 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81b11da-9e0c-4a87-a3b9-c8119d2fa710/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:34:03,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81b11da-9e0c-4a87-a3b9-c8119d2fa710/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:34:03,998 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2024-11-23 23:34:03,998 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2024-11-23 23:34:03,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-23 23:34:03,999 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-23 23:34:03,999 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-23 23:34:03,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-23 23:34:03,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-23 23:34:04,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-23 23:34:04,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-23 23:34:04,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-23 23:34:04,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-23 23:34:04,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-11-23 23:34:04,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2024-11-23 23:34:04,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 23:34:04,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 23:34:04,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-23 23:34:04,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-23 23:34:04,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-23 23:34:04,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-23 23:34:04,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-23 23:34:04,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-23 23:34:04,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-23 23:34:04,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-23 23:34:04,002 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_left_trim_pred [2024-11-23 23:34:04,002 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_left_trim_pred [2024-11-23 23:34:04,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-23 23:34:04,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:34:04,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-23 23:34:04,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-23 23:34:04,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-23 23:34:04,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-23 23:34:04,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-23 23:34:04,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-23 23:34:04,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-23 23:34:04,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-23 23:34:04,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:34:04,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:34:04,002 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-23 23:34:04,002 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-23 23:34:04,002 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2024-11-23 23:34:04,002 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2024-11-23 23:34:04,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-23 23:34:04,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-23 23:34:04,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-23 23:34:04,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-23 23:34:04,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-23 23:34:04,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-23 23:34:04,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-11-23 23:34:04,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2024-11-23 23:34:04,003 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 23:34:04,003 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 23:34:04,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-23 23:34:04,003 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-23 23:34:04,003 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-23 23:34:04,003 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-23 23:34:04,003 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-23 23:34:04,003 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-23 23:34:04,003 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-23 23:34:04,003 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-23 23:34:04,003 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-23 23:34:04,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-23 23:34:04,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-23 23:34:04,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-23 23:34:04,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-23 23:34:04,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-23 23:34:04,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-23 23:34:04,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-23 23:34:04,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-23 23:34:04,004 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~uint8_t~0~TO~int [2024-11-23 23:34:04,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~uint8_t~0~TO~int [2024-11-23 23:34:04,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 23:34:04,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 23:34:04,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-23 23:34:04,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-23 23:34:04,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-23 23:34:04,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-23 23:34:04,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-23 23:34:04,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-23 23:34:04,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:34:04,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 23:34:04,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 23:34:04,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-23 23:34:04,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-23 23:34:04,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-23 23:34:04,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-23 23:34:04,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-23 23:34:04,343 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:34:04,345 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:34:12,911 INFO L? ?]: Removed 83 outVars from TransFormulas that were not future-live. [2024-11-23 23:34:12,912 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:34:12,929 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:34:12,930 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-23 23:34:12,931 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:34:12 BoogieIcfgContainer [2024-11-23 23:34:12,931 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:34:12,933 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:34:12,933 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:34:12,938 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:34:12,938 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:34:00" (1/3) ... [2024-11-23 23:34:12,939 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5080a5ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:34:12, skipping insertion in model container [2024-11-23 23:34:12,939 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:34:03" (2/3) ... [2024-11-23 23:34:12,940 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5080a5ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:34:12, skipping insertion in model container [2024-11-23 23:34:12,941 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:34:12" (3/3) ... [2024-11-23 23:34:12,942 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_satisfies_pred_harness.i [2024-11-23 23:34:12,960 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:34:12,963 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_byte_cursor_satisfies_pred_harness.i that has 9 procedures, 97 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 23:34:13,041 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:34:13,056 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;@367c8f7c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:34:13,056 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 23:34:13,061 INFO L276 IsEmpty]: Start isEmpty. Operand has 97 states, 65 states have (on average 1.2307692307692308) internal successors, (80), 66 states have internal predecessors, (80), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-23 23:34:13,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-23 23:34:13,069 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:34:13,070 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:34:13,070 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:34:13,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:34:13,080 INFO L85 PathProgramCache]: Analyzing trace with hash -983183752, now seen corresponding path program 1 times [2024-11-23 23:34:13,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:34:13,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075629904] [2024-11-23 23:34:13,088 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:34:13,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:35:41,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:35:42,982 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-23 23:35:42,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:35:42,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075629904] [2024-11-23 23:35:42,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075629904] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:35:42,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716482891] [2024-11-23 23:35:42,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:35:42,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:35:42,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81b11da-9e0c-4a87-a3b9-c8119d2fa710/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:35:42,988 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81b11da-9e0c-4a87-a3b9-c8119d2fa710/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:35:42,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81b11da-9e0c-4a87-a3b9-c8119d2fa710/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:37:14,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:37:14,127 INFO L256 TraceCheckSpWp]: Trace formula consists of 7585 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 23:37:14,153 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:37:14,191 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-23 23:37:14,191 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:37:14,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716482891] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:37:14,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:37:14,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-23 23:37:14,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383180312] [2024-11-23 23:37:14,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:37:14,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 23:37:14,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:37:14,241 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 23:37:14,241 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:37:14,244 INFO L87 Difference]: Start difference. First operand has 97 states, 65 states have (on average 1.2307692307692308) internal successors, (80), 66 states have internal predecessors, (80), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-23 23:37:14,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:37:14,297 INFO L93 Difference]: Finished difference Result 190 states and 257 transitions. [2024-11-23 23:37:14,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 23:37:14,300 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 61 [2024-11-23 23:37:14,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:37:14,310 INFO L225 Difference]: With dead ends: 190 [2024-11-23 23:37:14,311 INFO L226 Difference]: Without dead ends: 88 [2024-11-23 23:37:14,315 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:37:14,319 INFO L435 NwaCegarLoop]: 121 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, 121 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:37:14,320 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:37:14,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-23 23:37:14,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-11-23 23:37:14,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 58 states have (on average 1.1724137931034482) internal successors, (68), 59 states have internal predecessors, (68), 22 states have call successors, (22), 8 states have call predecessors, (22), 7 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-23 23:37:14,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 110 transitions. [2024-11-23 23:37:14,375 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 110 transitions. Word has length 61 [2024-11-23 23:37:14,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:37:14,375 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 110 transitions. [2024-11-23 23:37:14,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-23 23:37:14,376 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 110 transitions. [2024-11-23 23:37:14,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-23 23:37:14,379 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:37:14,380 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:37:14,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81b11da-9e0c-4a87-a3b9-c8119d2fa710/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 23:37:14,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81b11da-9e0c-4a87-a3b9-c8119d2fa710/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:37:14,585 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:37:14,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:37:14,586 INFO L85 PathProgramCache]: Analyzing trace with hash 170006993, now seen corresponding path program 1 times [2024-11-23 23:37:14,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:37:14,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105464290] [2024-11-23 23:37:14,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:37:14,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:38:49,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:38:52,423 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-23 23:38:52,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:38:52,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105464290] [2024-11-23 23:38:52,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105464290] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:38:52,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667528449] [2024-11-23 23:38:52,425 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:38:52,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:38:52,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81b11da-9e0c-4a87-a3b9-c8119d2fa710/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:38:52,428 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81b11da-9e0c-4a87-a3b9-c8119d2fa710/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:38:52,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81b11da-9e0c-4a87-a3b9-c8119d2fa710/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 23:40:27,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:40:27,424 INFO L256 TraceCheckSpWp]: Trace formula consists of 7589 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 23:40:27,431 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:40:28,226 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-23 23:40:28,226 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:40:28,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667528449] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:40:28,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:40:28,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-23 23:40:28,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081591727] [2024-11-23 23:40:28,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:40:28,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:40:28,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:40:28,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:40:28,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:40:28,229 INFO L87 Difference]: Start difference. First operand 88 states and 110 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-23 23:40:29,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:40:29,027 INFO L93 Difference]: Finished difference Result 159 states and 204 transitions. [2024-11-23 23:40:29,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:40:29,028 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 63 [2024-11-23 23:40:29,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:40:29,031 INFO L225 Difference]: With dead ends: 159 [2024-11-23 23:40:29,031 INFO L226 Difference]: Without dead ends: 91 [2024-11-23 23:40:29,032 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:40:29,033 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 112 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:40:29,033 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 236 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-23 23:40:29,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-23 23:40:29,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2024-11-23 23:40:29,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 60 states have (on average 1.1666666666666667) internal successors, (70), 62 states have internal predecessors, (70), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (24), 20 states have call predecessors, (24), 20 states have call successors, (24) [2024-11-23 23:40:29,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 116 transitions. [2024-11-23 23:40:29,057 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 116 transitions. Word has length 63 [2024-11-23 23:40:29,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:40:29,058 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 116 transitions. [2024-11-23 23:40:29,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-23 23:40:29,058 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 116 transitions. [2024-11-23 23:40:29,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-23 23:40:29,060 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:40:29,060 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2024-11-23 23:40:29,085 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81b11da-9e0c-4a87-a3b9-c8119d2fa710/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 23:40:29,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81b11da-9e0c-4a87-a3b9-c8119d2fa710/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:40:29,261 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:40:29,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:40:29,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1938269492, now seen corresponding path program 1 times [2024-11-23 23:40:29,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:40:29,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743364591] [2024-11-23 23:40:29,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:40:29,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:42:05,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:42:09,098 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-23 23:42:09,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:42:09,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743364591] [2024-11-23 23:42:09,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743364591] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:42:09,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764389413] [2024-11-23 23:42:09,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:42:09,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:42:09,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81b11da-9e0c-4a87-a3b9-c8119d2fa710/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:42:09,105 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81b11da-9e0c-4a87-a3b9-c8119d2fa710/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:42:09,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81b11da-9e0c-4a87-a3b9-c8119d2fa710/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 23:43:46,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:43:46,192 INFO L256 TraceCheckSpWp]: Trace formula consists of 7594 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-23 23:43:46,200 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:43:47,470 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-23 23:43:47,470 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:43:47,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764389413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:43:47,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:43:47,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 15 [2024-11-23 23:43:47,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138894991] [2024-11-23 23:43:47,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:43:47,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 23:43:47,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:43:47,473 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 23:43:47,473 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-11-23 23:43:47,473 INFO L87 Difference]: Start difference. First operand 91 states and 116 transitions. Second operand has 9 states, 7 states have (on average 5.857142857142857) internal successors, (41), 8 states have internal predecessors, (41), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-23 23:43:49,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:43:49,432 INFO L93 Difference]: Finished difference Result 152 states and 193 transitions. [2024-11-23 23:43:49,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 23:43:49,432 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.857142857142857) internal successors, (41), 8 states have internal predecessors, (41), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 65 [2024-11-23 23:43:49,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:43:49,434 INFO L225 Difference]: With dead ends: 152 [2024-11-23 23:43:49,434 INFO L226 Difference]: Without dead ends: 91 [2024-11-23 23:43:49,435 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2024-11-23 23:43:49,436 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 128 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:43:49,437 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 505 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-23 23:43:49,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-23 23:43:49,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2024-11-23 23:43:49,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 60 states have (on average 1.1666666666666667) internal successors, (70), 62 states have internal predecessors, (70), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21) [2024-11-23 23:43:49,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 113 transitions. [2024-11-23 23:43:49,451 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 113 transitions. Word has length 65 [2024-11-23 23:43:49,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:43:49,451 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 113 transitions. [2024-11-23 23:43:49,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.857142857142857) internal successors, (41), 8 states have internal predecessors, (41), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-23 23:43:49,452 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 113 transitions. [2024-11-23 23:43:49,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-23 23:43:49,454 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:43:49,455 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:43:49,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81b11da-9e0c-4a87-a3b9-c8119d2fa710/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 23:43:49,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81b11da-9e0c-4a87-a3b9-c8119d2fa710/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:43:49,655 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:43:49,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:43:49,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1573831572, now seen corresponding path program 1 times [2024-11-23 23:43:49,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:43:49,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64812432] [2024-11-23 23:43:49,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:43:49,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:27,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:34,647 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-23 23:45:34,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:34,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64812432] [2024-11-23 23:45:34,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64812432] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:45:34,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:45:34,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 23:45:34,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232438616] [2024-11-23 23:45:34,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:45:34,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 23:45:34,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:34,649 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 23:45:34,649 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:45:34,650 INFO L87 Difference]: Start difference. First operand 91 states and 113 transitions. Second operand has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-23 23:45:35,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:45:35,127 INFO L93 Difference]: Finished difference Result 103 states and 130 transitions. [2024-11-23 23:45:35,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:45:35,128 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 69 [2024-11-23 23:45:35,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:45:35,130 INFO L225 Difference]: With dead ends: 103 [2024-11-23 23:45:35,130 INFO L226 Difference]: Without dead ends: 101 [2024-11-23 23:45:35,131 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:45:35,132 INFO L435 NwaCegarLoop]: 108 mSDtfsCounter, 3 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:45:35,132 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 740 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 23:45:35,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-23 23:45:35,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 100. [2024-11-23 23:45:35,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 66 states have (on average 1.1515151515151516) internal successors, (76), 69 states have internal predecessors, (76), 23 states have call successors, (23), 9 states have call predecessors, (23), 10 states have return successors, (28), 21 states have call predecessors, (28), 21 states have call successors, (28) [2024-11-23 23:45:35,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 127 transitions. [2024-11-23 23:45:35,150 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 127 transitions. Word has length 69 [2024-11-23 23:45:35,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:45:35,150 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 127 transitions. [2024-11-23 23:45:35,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-23 23:45:35,151 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 127 transitions. [2024-11-23 23:45:35,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-23 23:45:35,153 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:45:35,153 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:45:35,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 23:45:35,154 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:45:35,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:35,154 INFO L85 PathProgramCache]: Analyzing trace with hash -710428236, now seen corresponding path program 1 times [2024-11-23 23:45:35,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:35,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038420120] [2024-11-23 23:45:35,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:35,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:47:08,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:47:20,460 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-23 23:47:20,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:47:20,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038420120] [2024-11-23 23:47:20,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038420120] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:47:20,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976810837] [2024-11-23 23:47:20,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:47:20,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:47:20,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81b11da-9e0c-4a87-a3b9-c8119d2fa710/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:47:20,464 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81b11da-9e0c-4a87-a3b9-c8119d2fa710/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:47:20,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81b11da-9e0c-4a87-a3b9-c8119d2fa710/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process