./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness-1.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_a7e8b73c-46a6-4ad7-8bae-b70084c9e7c0/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7e8b73c-46a6-4ad7-8bae-b70084c9e7c0/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_a7e8b73c-46a6-4ad7-8bae-b70084c9e7c0/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7e8b73c-46a6-4ad7-8bae-b70084c9e7c0/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7e8b73c-46a6-4ad7-8bae-b70084c9e7c0/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_a7e8b73c-46a6-4ad7-8bae-b70084c9e7c0/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 6e8329de8885610e11451d8b1311f161005fbaac7c4b7180f37a9501d850f1ce --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:09:08,855 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:09:08,960 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7e8b73c-46a6-4ad7-8bae-b70084c9e7c0/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-23 23:09:08,970 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:09:08,970 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:09:09,019 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:09:09,021 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:09:09,021 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:09:09,022 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:09:09,022 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:09:09,024 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:09:09,024 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:09:09,024 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:09:09,025 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:09:09,025 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:09:09,026 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:09:09,026 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:09:09,026 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:09:09,026 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:09:09,026 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:09:09,026 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:09:09,026 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:09:09,027 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:09:09,027 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:09:09,027 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:09:09,027 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:09:09,027 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:09:09,027 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:09:09,027 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:09:09,027 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:09:09,027 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:09:09,028 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:09:09,028 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:09:09,028 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:09:09,028 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:09:09,028 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:09:09,028 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:09:09,028 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:09:09,028 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:09:09,028 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:09:09,028 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:09:09,029 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:09:09,029 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:09:09,029 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:09:09,029 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:09:09,029 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_a7e8b73c-46a6-4ad7-8bae-b70084c9e7c0/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 -> 6e8329de8885610e11451d8b1311f161005fbaac7c4b7180f37a9501d850f1ce [2024-11-23 23:09:09,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:09:09,414 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:09:09,417 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:09:09,419 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:09:09,419 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:09:09,422 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7e8b73c-46a6-4ad7-8bae-b70084c9e7c0/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness-1.i [2024-11-23 23:09:12,512 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7e8b73c-46a6-4ad7-8bae-b70084c9e7c0/bin/uautomizer-verify-LYvppIcaGC/data/94ddc865a/e5de9ad4183640f7b8954f2a66554f66/FLAG6590542ab [2024-11-23 23:09:13,214 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:09:13,218 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7e8b73c-46a6-4ad7-8bae-b70084c9e7c0/sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness-1.i [2024-11-23 23:09:13,256 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7e8b73c-46a6-4ad7-8bae-b70084c9e7c0/bin/uautomizer-verify-LYvppIcaGC/data/94ddc865a/e5de9ad4183640f7b8954f2a66554f66/FLAG6590542ab [2024-11-23 23:09:13,274 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7e8b73c-46a6-4ad7-8bae-b70084c9e7c0/bin/uautomizer-verify-LYvppIcaGC/data/94ddc865a/e5de9ad4183640f7b8954f2a66554f66 [2024-11-23 23:09:13,276 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:09:13,278 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:09:13,280 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:09:13,280 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:09:13,285 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:09:13,286 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:09:13" (1/1) ... [2024-11-23 23:09:13,287 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1707f6df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:09:13, skipping insertion in model container [2024-11-23 23:09:13,287 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:09:13" (1/1) ... [2024-11-23 23:09:13,401 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:09:13,714 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_a7e8b73c-46a6-4ad7-8bae-b70084c9e7c0/sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness-1.i[4492,4505] [2024-11-23 23:09:13,723 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_a7e8b73c-46a6-4ad7-8bae-b70084c9e7c0/sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness-1.i[4552,4565] [2024-11-23 23:09:14,901 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:09:14,903 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:09:14,903 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:09:14,904 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:09:14,906 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:09:14,923 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:09:14,924 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:09:14,928 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:09:14,929 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:09:16,049 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:09:16,053 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:09:16,178 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:09:16,252 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:09:16,273 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_a7e8b73c-46a6-4ad7-8bae-b70084c9e7c0/sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness-1.i[4492,4505] [2024-11-23 23:09:16,277 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_a7e8b73c-46a6-4ad7-8bae-b70084c9e7c0/sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness-1.i[4552,4565] [2024-11-23 23:09:16,349 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:09:16,350 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:09:16,351 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:09:16,351 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:09:16,352 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:09:16,360 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:09:16,360 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:09:16,362 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:09:16,362 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:09:16,613 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8277] [2024-11-23 23:09:16,616 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:09:16,617 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:09:16,637 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8763-8774] [2024-11-23 23:09:16,665 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:09:16,964 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:09:16,965 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:09:16 WrapperNode [2024-11-23 23:09:16,966 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:09:16,967 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:09:16,967 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:09:16,967 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:09:16,977 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:09:16" (1/1) ... [2024-11-23 23:09:17,106 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:09:16" (1/1) ... [2024-11-23 23:09:17,214 INFO L138 Inliner]: procedures = 680, calls = 2609, calls flagged for inlining = 60, calls inlined = 6, statements flattened = 802 [2024-11-23 23:09:17,214 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:09:17,215 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:09:17,215 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:09:17,215 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:09:17,227 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:09:16" (1/1) ... [2024-11-23 23:09:17,228 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:09:16" (1/1) ... [2024-11-23 23:09:17,238 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:09:16" (1/1) ... [2024-11-23 23:09:17,364 INFO L175 MemorySlicer]: Split 516 memory accesses to 6 slices as follows [2, 257, 238, 8, 6, 5]. 50 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 0, 6, 0, 0, 5]. The 491 writes are split as follows [0, 257, 232, 0, 2, 0]. [2024-11-23 23:09:17,369 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:09:16" (1/1) ... [2024-11-23 23:09:17,369 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:09:16" (1/1) ... [2024-11-23 23:09:17,439 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:09:16" (1/1) ... [2024-11-23 23:09:17,444 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:09:16" (1/1) ... [2024-11-23 23:09:17,456 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:09:16" (1/1) ... [2024-11-23 23:09:17,469 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:09:16" (1/1) ... [2024-11-23 23:09:17,477 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:09:16" (1/1) ... [2024-11-23 23:09:17,486 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:09:17,487 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:09:17,487 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:09:17,487 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:09:17,489 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:09:16" (1/1) ... [2024-11-23 23:09:17,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:09:17,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7e8b73c-46a6-4ad7-8bae-b70084c9e7c0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:09:17,552 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7e8b73c-46a6-4ad7-8bae-b70084c9e7c0/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:09:17,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7e8b73c-46a6-4ad7-8bae-b70084c9e7c0/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:09:17,595 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq_c_str [2024-11-23 23:09:17,595 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq_c_str [2024-11-23 23:09:17,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-23 23:09:17,595 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-23 23:09:17,595 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-23 23:09:17,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-23 23:09:17,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-23 23:09:17,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-23 23:09:17,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-23 23:09:17,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-23 23:09:17,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-23 23:09:17,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 23:09:17,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 23:09:17,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-23 23:09:17,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-23 23:09:17,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-23 23:09:17,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-23 23:09:17,599 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-23 23:09:17,599 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-23 23:09:17,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-23 23:09:17,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:09:17,601 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2024-11-23 23:09:17,601 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2024-11-23 23:09:17,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:09:17,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:09:17,601 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-23 23:09:17,601 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-23 23:09:17,601 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2024-11-23 23:09:17,602 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2024-11-23 23:09:17,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-23 23:09:17,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-23 23:09:17,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-23 23:09:17,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-23 23:09:17,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-23 23:09:17,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-23 23:09:17,603 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2024-11-23 23:09:17,603 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2024-11-23 23:09:17,603 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 23:09:17,603 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 23:09:17,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-23 23:09:17,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-23 23:09:17,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-23 23:09:17,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-23 23:09:17,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-23 23:09:17,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-23 23:09:17,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-23 23:09:17,606 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-23 23:09:17,606 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-23 23:09:17,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 23:09:17,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 23:09:17,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-23 23:09:17,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-23 23:09:17,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-23 23:09:17,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-23 23:09:17,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:09:17,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 23:09:17,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 23:09:17,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-23 23:09:17,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-23 23:09:17,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-23 23:09:17,969 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:09:17,971 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:09:27,883 INFO L? ?]: Removed 68 outVars from TransFormulas that were not future-live. [2024-11-23 23:09:27,884 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:09:27,897 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:09:27,897 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-23 23:09:27,898 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:09:27 BoogieIcfgContainer [2024-11-23 23:09:27,898 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:09:27,901 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:09:27,901 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:09:27,907 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:09:27,907 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:09:13" (1/3) ... [2024-11-23 23:09:27,908 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d666a39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:09:27, skipping insertion in model container [2024-11-23 23:09:27,908 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:09:16" (2/3) ... [2024-11-23 23:09:27,908 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d666a39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:09:27, skipping insertion in model container [2024-11-23 23:09:27,909 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:09:27" (3/3) ... [2024-11-23 23:09:27,910 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_array_eq_c_str_harness-1.i [2024-11-23 23:09:27,929 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:09:27,931 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_array_eq_c_str_harness-1.i that has 10 procedures, 96 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 23:09:28,015 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:09:28,033 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;@7af24a69, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:09:28,033 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 23:09:28,038 INFO L276 IsEmpty]: Start isEmpty. Operand has 96 states, 59 states have (on average 1.271186440677966) internal successors, (75), 62 states have internal predecessors, (75), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-23 23:09:28,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-23 23:09:28,049 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:09:28,050 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:09:28,051 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:09:28,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:09:28,061 INFO L85 PathProgramCache]: Analyzing trace with hash 511260694, now seen corresponding path program 1 times [2024-11-23 23:09:28,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:09:28,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403663424] [2024-11-23 23:09:28,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:09:28,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:11:14,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:11:15,289 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-23 23:11:15,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:11:15,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403663424] [2024-11-23 23:11:15,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403663424] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:11:15,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21976527] [2024-11-23 23:11:15,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:11:15,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:11:15,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7e8b73c-46a6-4ad7-8bae-b70084c9e7c0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:11:15,297 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7e8b73c-46a6-4ad7-8bae-b70084c9e7c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:11:15,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7e8b73c-46a6-4ad7-8bae-b70084c9e7c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:12:53,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:12:53,767 INFO L256 TraceCheckSpWp]: Trace formula consists of 7538 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 23:12:53,780 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:12:53,807 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-23 23:12:53,808 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:12:53,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21976527] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:12:53,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:12:53,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-23 23:12:53,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214143310] [2024-11-23 23:12:53,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:12:53,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 23:12:53,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:12:53,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 23:12:53,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:12:53,847 INFO L87 Difference]: Start difference. First operand has 96 states, 59 states have (on average 1.271186440677966) internal successors, (75), 62 states have internal predecessors, (75), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-23 23:12:53,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:12:53,884 INFO L93 Difference]: Finished difference Result 189 states and 272 transitions. [2024-11-23 23:12:53,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 23:12:53,887 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 67 [2024-11-23 23:12:53,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:12:53,895 INFO L225 Difference]: With dead ends: 189 [2024-11-23 23:12:53,895 INFO L226 Difference]: Without dead ends: 91 [2024-11-23 23:12:53,899 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 68 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 23:12:53,903 INFO L435 NwaCegarLoop]: 124 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, 124 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 23:12:53,904 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:12:53,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-23 23:12:53,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2024-11-23 23:12:53,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 55 states have (on average 1.2181818181818183) internal successors, (67), 57 states have internal predecessors, (67), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-23 23:12:53,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 118 transitions. [2024-11-23 23:12:53,948 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 118 transitions. Word has length 67 [2024-11-23 23:12:53,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:12:53,948 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 118 transitions. [2024-11-23 23:12:53,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-23 23:12:53,949 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 118 transitions. [2024-11-23 23:12:53,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-23 23:12:53,952 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:12:53,952 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:12:53,973 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7e8b73c-46a6-4ad7-8bae-b70084c9e7c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 23:12:54,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7e8b73c-46a6-4ad7-8bae-b70084c9e7c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-23 23:12:54,153 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:12:54,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:12:54,154 INFO L85 PathProgramCache]: Analyzing trace with hash -2109288692, now seen corresponding path program 1 times [2024-11-23 23:12:54,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:12:54,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867085933] [2024-11-23 23:12:54,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:12:54,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:14:29,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:14:40,494 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-23 23:14:40,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:14:40,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867085933] [2024-11-23 23:14:40,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867085933] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:14:40,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75444373] [2024-11-23 23:14:40,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:14:40,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:14:40,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7e8b73c-46a6-4ad7-8bae-b70084c9e7c0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:14:40,500 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7e8b73c-46a6-4ad7-8bae-b70084c9e7c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:14:40,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7e8b73c-46a6-4ad7-8bae-b70084c9e7c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 23:16:22,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:16:22,074 INFO L256 TraceCheckSpWp]: Trace formula consists of 7538 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-23 23:16:22,083 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:16:23,861 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-23 23:16:23,861 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:16:23,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75444373] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:16:23,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:16:23,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 18 [2024-11-23 23:16:23,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549818153] [2024-11-23 23:16:23,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:16:23,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 23:16:23,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:16:23,865 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 23:16:23,866 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2024-11-23 23:16:23,866 INFO L87 Difference]: Start difference. First operand 91 states and 118 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-23 23:16:25,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:16:25,036 INFO L93 Difference]: Finished difference Result 144 states and 188 transitions. [2024-11-23 23:16:25,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 23:16:25,037 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) Word has length 67 [2024-11-23 23:16:25,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:16:25,039 INFO L225 Difference]: With dead ends: 144 [2024-11-23 23:16:25,039 INFO L226 Difference]: Without dead ends: 91 [2024-11-23 23:16:25,040 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2024-11-23 23:16:25,041 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 6 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:16:25,041 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 680 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-23 23:16:25,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-23 23:16:25,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2024-11-23 23:16:25,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 55 states have (on average 1.2) internal successors, (66), 57 states have internal predecessors, (66), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-23 23:16:25,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 117 transitions. [2024-11-23 23:16:25,054 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 117 transitions. Word has length 67 [2024-11-23 23:16:25,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:16:25,055 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 117 transitions. [2024-11-23 23:16:25,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-23 23:16:25,056 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 117 transitions. [2024-11-23 23:16:25,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-23 23:16:25,058 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:16:25,059 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:16:25,084 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7e8b73c-46a6-4ad7-8bae-b70084c9e7c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 23:16:25,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7e8b73c-46a6-4ad7-8bae-b70084c9e7c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:16:25,260 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:16:25,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:16:25,260 INFO L85 PathProgramCache]: Analyzing trace with hash 890501595, now seen corresponding path program 1 times [2024-11-23 23:16:25,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:16:25,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764940910] [2024-11-23 23:16:25,260 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:16:25,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:18:04,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:18:12,747 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-23 23:18:12,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:18:12,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764940910] [2024-11-23 23:18:12,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764940910] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:18:12,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212010824] [2024-11-23 23:18:12,748 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:18:12,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:18:12,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7e8b73c-46a6-4ad7-8bae-b70084c9e7c0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:18:12,751 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7e8b73c-46a6-4ad7-8bae-b70084c9e7c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:18:12,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7e8b73c-46a6-4ad7-8bae-b70084c9e7c0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process