./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reset_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_b461e663-eb84-42e8-aff8-c8c9b2b45d17/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b461e663-eb84-42e8-aff8-c8c9b2b45d17/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_b461e663-eb84-42e8-aff8-c8c9b2b45d17/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b461e663-eb84-42e8-aff8-c8c9b2b45d17/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reset_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b461e663-eb84-42e8-aff8-c8c9b2b45d17/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_b461e663-eb84-42e8-aff8-c8c9b2b45d17/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 cda9529776bede8f1b2097af98f375819691ab0c72bb3e360b999e206011bf76 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:56:24,237 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:56:24,337 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b461e663-eb84-42e8-aff8-c8c9b2b45d17/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-23 23:56:24,344 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:56:24,344 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:56:24,373 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:56:24,373 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:56:24,374 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:56:24,374 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:56:24,374 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:56:24,375 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:56:24,375 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:56:24,375 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:56:24,375 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:56:24,375 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:56:24,376 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:56:24,376 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:56:24,376 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:56:24,376 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:56:24,376 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:56:24,377 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:56:24,377 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:56:24,377 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:56:24,377 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:56:24,377 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:56:24,377 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:56:24,378 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:56:24,378 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:56:24,378 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:56:24,378 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:56:24,378 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:56:24,378 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:56:24,378 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:56:24,378 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:56:24,379 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:56:24,379 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:56:24,379 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:56:24,383 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:56:24,383 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:56:24,383 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:56:24,384 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:56:24,384 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:56:24,384 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:56:24,384 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:56:24,384 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:56:24,384 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_b461e663-eb84-42e8-aff8-c8c9b2b45d17/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 -> cda9529776bede8f1b2097af98f375819691ab0c72bb3e360b999e206011bf76 [2024-11-23 23:56:24,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:56:24,709 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:56:24,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:56:24,713 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:56:24,713 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:56:24,715 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b461e663-eb84-42e8-aff8-c8c9b2b45d17/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reset_harness.i [2024-11-23 23:56:28,249 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b461e663-eb84-42e8-aff8-c8c9b2b45d17/bin/uautomizer-verify-LYvppIcaGC/data/15a1b4185/215e53c4fd194ef1862a73bce17c7333/FLAG798225f92 [2024-11-23 23:56:29,188 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:56:29,192 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b461e663-eb84-42e8-aff8-c8c9b2b45d17/sv-benchmarks/c/aws-c-common/aws_byte_buf_reset_harness.i [2024-11-23 23:56:29,248 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b461e663-eb84-42e8-aff8-c8c9b2b45d17/bin/uautomizer-verify-LYvppIcaGC/data/15a1b4185/215e53c4fd194ef1862a73bce17c7333/FLAG798225f92 [2024-11-23 23:56:29,354 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b461e663-eb84-42e8-aff8-c8c9b2b45d17/bin/uautomizer-verify-LYvppIcaGC/data/15a1b4185/215e53c4fd194ef1862a73bce17c7333 [2024-11-23 23:56:29,357 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:56:29,359 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:56:29,361 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:56:29,361 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:56:29,367 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:56:29,368 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:56:29" (1/1) ... [2024-11-23 23:56:29,369 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73b49b7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:56:29, skipping insertion in model container [2024-11-23 23:56:29,369 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:56:29" (1/1) ... [2024-11-23 23:56:29,483 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:56:29,889 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_b461e663-eb84-42e8-aff8-c8c9b2b45d17/sv-benchmarks/c/aws-c-common/aws_byte_buf_reset_harness.i[4492,4505] [2024-11-23 23:56:29,899 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_b461e663-eb84-42e8-aff8-c8c9b2b45d17/sv-benchmarks/c/aws-c-common/aws_byte_buf_reset_harness.i[4552,4565] [2024-11-23 23:56:31,098 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:56:31,099 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:56:31,100 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:56:31,101 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:56:31,102 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:56:31,120 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:56:31,121 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:56:31,124 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:56:31,124 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:56:32,218 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:56:32,218 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:56:32,309 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:56:32,370 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:56:32,385 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_b461e663-eb84-42e8-aff8-c8c9b2b45d17/sv-benchmarks/c/aws-c-common/aws_byte_buf_reset_harness.i[4492,4505] [2024-11-23 23:56:32,386 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_b461e663-eb84-42e8-aff8-c8c9b2b45d17/sv-benchmarks/c/aws-c-common/aws_byte_buf_reset_harness.i[4552,4565] [2024-11-23 23:56:32,432 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:56:32,433 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:56:32,433 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:56:32,434 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:56:32,434 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:56:32,442 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:56:32,443 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:56:32,444 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:56:32,445 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:56:32,690 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8291] [2024-11-23 23:56:32,692 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:56:32,693 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:56:32,712 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8777-8788] [2024-11-23 23:56:32,744 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:56:33,082 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:56:33,082 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:56:33 WrapperNode [2024-11-23 23:56:33,082 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:56:33,084 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:56:33,084 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:56:33,084 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:56:33,092 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:56:33" (1/1) ... [2024-11-23 23:56:33,211 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:56:33" (1/1) ... [2024-11-23 23:56:33,311 INFO L138 Inliner]: procedures = 680, calls = 2629, calls flagged for inlining = 59, calls inlined = 7, statements flattened = 822 [2024-11-23 23:56:33,311 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:56:33,312 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:56:33,312 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:56:33,312 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:56:33,327 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:56:33" (1/1) ... [2024-11-23 23:56:33,327 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:56:33" (1/1) ... [2024-11-23 23:56:33,335 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:56:33" (1/1) ... [2024-11-23 23:56:33,414 INFO L175 MemorySlicer]: Split 542 memory accesses to 6 slices as follows [2, 257, 238, 31, 7, 7]. 47 percent of accesses are in the largest equivalence class. The 21 initializations are split as follows [2, 0, 6, 4, 5, 4]. The 494 writes are split as follows [0, 257, 232, 4, 1, 0]. [2024-11-23 23:56:33,414 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:56:33" (1/1) ... [2024-11-23 23:56:33,415 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:56:33" (1/1) ... [2024-11-23 23:56:33,476 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:56:33" (1/1) ... [2024-11-23 23:56:33,479 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:56:33" (1/1) ... [2024-11-23 23:56:33,483 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:56:33" (1/1) ... [2024-11-23 23:56:33,496 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:56:33" (1/1) ... [2024-11-23 23:56:33,503 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:56:33" (1/1) ... [2024-11-23 23:56:33,530 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:56:33,531 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:56:33,531 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:56:33,532 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:56:33,540 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:56:33" (1/1) ... [2024-11-23 23:56:33,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:56:33,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b461e663-eb84-42e8-aff8-c8c9b2b45d17/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:56:33,590 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b461e663-eb84-42e8-aff8-c8c9b2b45d17/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:56:33,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b461e663-eb84-42e8-aff8-c8c9b2b45d17/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:56:33,626 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2024-11-23 23:56:33,627 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2024-11-23 23:56:33,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-23 23:56:33,628 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-23 23:56:33,628 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-23 23:56:33,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-23 23:56:33,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-23 23:56:33,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-23 23:56:33,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-23 23:56:33,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-23 23:56:33,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-23 23:56:33,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 23:56:33,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 23:56:33,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-23 23:56:33,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-23 23:56:33,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-23 23:56:33,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-23 23:56:33,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-23 23:56:33,631 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-23 23:56:33,631 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_secure_zero [2024-11-23 23:56:33,633 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_secure_zero [2024-11-23 23:56:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-23 23:56:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:56:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-23 23:56:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-23 23:56:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-23 23:56:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-23 23:56:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-23 23:56:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-23 23:56:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:56:33,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:56:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-23 23:56:33,634 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-23 23:56:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-23 23:56:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-23 23:56:33,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-23 23:56:33,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-23 23:56:33,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-23 23:56:33,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-23 23:56:33,635 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 23:56:33,635 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 23:56:33,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-23 23:56:33,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-23 23:56:33,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-23 23:56:33,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-23 23:56:33,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-23 23:56:33,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-23 23:56:33,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-23 23:56:33,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-23 23:56:33,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-23 23:56:33,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-23 23:56:33,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-23 23:56:33,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-23 23:56:33,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-23 23:56:33,636 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-23 23:56:33,636 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-23 23:56:33,636 INFO L130 BoogieDeclarations]: Found specification of procedure assert_all_bytes_are [2024-11-23 23:56:33,636 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_all_bytes_are [2024-11-23 23:56:33,636 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-23 23:56:33,636 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-23 23:56:33,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 23:56:33,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 23:56:33,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-23 23:56:33,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-23 23:56:33,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-23 23:56:33,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-23 23:56:33,637 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2024-11-23 23:56:33,637 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2024-11-23 23:56:33,637 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2024-11-23 23:56:33,637 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2024-11-23 23:56:33,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:56:33,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 23:56:33,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 23:56:33,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-23 23:56:33,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-23 23:56:33,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-23 23:56:34,103 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:56:34,106 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:56:44,058 INFO L? ?]: Removed 72 outVars from TransFormulas that were not future-live. [2024-11-23 23:56:44,058 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:56:44,075 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:56:44,078 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-23 23:56:44,079 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:56:44 BoogieIcfgContainer [2024-11-23 23:56:44,079 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:56:44,081 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:56:44,083 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:56:44,090 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:56:44,091 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:56:29" (1/3) ... [2024-11-23 23:56:44,092 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5be30b71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:56:44, skipping insertion in model container [2024-11-23 23:56:44,092 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:56:33" (2/3) ... [2024-11-23 23:56:44,094 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5be30b71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:56:44, skipping insertion in model container [2024-11-23 23:56:44,094 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:56:44" (3/3) ... [2024-11-23 23:56:44,096 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_reset_harness.i [2024-11-23 23:56:44,117 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:56:44,119 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_byte_buf_reset_harness.i that has 12 procedures, 115 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 23:56:44,195 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:56:44,210 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;@524af72f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:56:44,210 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 23:56:44,218 INFO L276 IsEmpty]: Start isEmpty. Operand has 115 states, 79 states have (on average 1.2278481012658229) internal successors, (97), 81 states have internal predecessors, (97), 23 states have call successors, (23), 11 states have call predecessors, (23), 11 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-23 23:56:44,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-23 23:56:44,228 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:56:44,231 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:56:44,231 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:56:44,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:44,238 INFO L85 PathProgramCache]: Analyzing trace with hash 153844194, now seen corresponding path program 1 times [2024-11-23 23:56:44,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:56:44,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48479035] [2024-11-23 23:56:44,249 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:44,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:58:34,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:58:35,457 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-23 23:58:35,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:58:35,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48479035] [2024-11-23 23:58:35,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48479035] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:58:35,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982317141] [2024-11-23 23:58:35,459 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:58:35,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:58:35,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b461e663-eb84-42e8-aff8-c8c9b2b45d17/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:58:35,466 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b461e663-eb84-42e8-aff8-c8c9b2b45d17/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:58:35,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b461e663-eb84-42e8-aff8-c8c9b2b45d17/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:00:14,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:00:14,563 INFO L256 TraceCheckSpWp]: Trace formula consists of 7530 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-24 00:00:14,576 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:00:14,591 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-24 00:00:14,591 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:00:14,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982317141] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:00:14,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:00:14,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-24 00:00:14,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397983177] [2024-11-24 00:00:14,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:00:14,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 00:00:14,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:00:14,630 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 00:00:14,631 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:00:14,633 INFO L87 Difference]: Start difference. First operand has 115 states, 79 states have (on average 1.2278481012658229) internal successors, (97), 81 states have internal predecessors, (97), 23 states have call successors, (23), 11 states have call predecessors, (23), 11 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-24 00:00:14,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:00:14,683 INFO L93 Difference]: Finished difference Result 226 states and 298 transitions. [2024-11-24 00:00:14,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 00:00:14,685 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 46 [2024-11-24 00:00:14,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:00:14,694 INFO L225 Difference]: With dead ends: 226 [2024-11-24 00:00:14,694 INFO L226 Difference]: Without dead ends: 106 [2024-11-24 00:00:14,698 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:00:14,702 INFO L435 NwaCegarLoop]: 140 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, 140 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 [2024-11-24 00:00:14,703 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:00:14,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-24 00:00:14,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2024-11-24 00:00:14,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 72 states have (on average 1.1805555555555556) internal successors, (85), 74 states have internal predecessors, (85), 23 states have call successors, (23), 11 states have call predecessors, (23), 10 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-24 00:00:14,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 129 transitions. [2024-11-24 00:00:14,753 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 129 transitions. Word has length 46 [2024-11-24 00:00:14,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:00:14,754 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 129 transitions. [2024-11-24 00:00:14,754 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-24 00:00:14,755 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 129 transitions. [2024-11-24 00:00:14,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-24 00:00:14,757 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:00:14,757 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:00:14,782 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b461e663-eb84-42e8-aff8-c8c9b2b45d17/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 00:00:14,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b461e663-eb84-42e8-aff8-c8c9b2b45d17/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:00:14,958 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:00:14,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:00:14,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1093183768, now seen corresponding path program 1 times [2024-11-24 00:00:14,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:00:14,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132818736] [2024-11-24 00:00:14,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:00:14,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:01:50,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:01:54,165 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 00:01:54,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:01:54,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132818736] [2024-11-24 00:01:54,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132818736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:01:54,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:01:54,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:01:54,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736465073] [2024-11-24 00:01:54,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:01:54,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:01:54,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:01:54,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:01:54,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:01:54,169 INFO L87 Difference]: Start difference. First operand 106 states and 129 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-24 00:01:54,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:01:54,607 INFO L93 Difference]: Finished difference Result 190 states and 234 transitions. [2024-11-24 00:01:54,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:01:54,608 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 46 [2024-11-24 00:01:54,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:01:54,612 INFO L225 Difference]: With dead ends: 190 [2024-11-24 00:01:54,612 INFO L226 Difference]: Without dead ends: 109 [2024-11-24 00:01:54,613 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:01:54,613 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 12 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:01:54,614 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 439 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 00:01:54,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-24 00:01:54,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2024-11-24 00:01:54,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 74 states have (on average 1.1756756756756757) internal successors, (87), 77 states have internal predecessors, (87), 23 states have call successors, (23), 11 states have call predecessors, (23), 11 states have return successors, (23), 21 states have call predecessors, (23), 21 states have call successors, (23) [2024-11-24 00:01:54,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 133 transitions. [2024-11-24 00:01:54,642 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 133 transitions. Word has length 46 [2024-11-24 00:01:54,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:01:54,643 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 133 transitions. [2024-11-24 00:01:54,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-24 00:01:54,643 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 133 transitions. [2024-11-24 00:01:54,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-24 00:01:54,644 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:01:54,645 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:01:54,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 00:01:54,649 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:01:54,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:01:54,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1193422469, now seen corresponding path program 1 times [2024-11-24 00:01:54,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:01:54,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378538886] [2024-11-24 00:01:54,650 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:01:54,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:03:36,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:03:38,085 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 00:03:38,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:03:38,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378538886] [2024-11-24 00:03:38,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378538886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:03:38,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:03:38,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:03:38,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947782431] [2024-11-24 00:03:38,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:03:38,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:03:38,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:03:38,090 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:03:38,090 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:03:38,090 INFO L87 Difference]: Start difference. First operand 109 states and 133 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-24 00:03:38,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:03:38,262 INFO L93 Difference]: Finished difference Result 196 states and 245 transitions. [2024-11-24 00:03:38,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:03:38,263 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 52 [2024-11-24 00:03:38,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:03:38,265 INFO L225 Difference]: With dead ends: 196 [2024-11-24 00:03:38,265 INFO L226 Difference]: Without dead ends: 112 [2024-11-24 00:03:38,268 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:03:38,270 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 1 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:03:38,271 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 372 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:03:38,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-24 00:03:38,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2024-11-24 00:03:38,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 76 states have (on average 1.1710526315789473) internal successors, (89), 79 states have internal predecessors, (89), 23 states have call successors, (23), 11 states have call predecessors, (23), 11 states have return successors, (23), 21 states have call predecessors, (23), 21 states have call successors, (23) [2024-11-24 00:03:38,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 135 transitions. [2024-11-24 00:03:38,298 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 135 transitions. Word has length 52 [2024-11-24 00:03:38,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:03:38,299 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 135 transitions. [2024-11-24 00:03:38,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-24 00:03:38,299 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 135 transitions. [2024-11-24 00:03:38,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-24 00:03:38,303 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:03:38,303 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:03:38,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 00:03:38,304 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:03:38,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:03:38,307 INFO L85 PathProgramCache]: Analyzing trace with hash -2011070919, now seen corresponding path program 1 times [2024-11-24 00:03:38,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:03:38,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746152192] [2024-11-24 00:03:38,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:03:38,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:05:10,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:05:11,955 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 00:05:11,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:05:11,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746152192] [2024-11-24 00:05:11,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746152192] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:05:11,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:05:11,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:05:11,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316962839] [2024-11-24 00:05:11,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:05:11,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:05:11,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:05:11,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:05:11,959 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:05:11,959 INFO L87 Difference]: Start difference. First operand 111 states and 135 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-24 00:05:12,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:05:12,064 INFO L93 Difference]: Finished difference Result 199 states and 248 transitions. [2024-11-24 00:05:12,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:05:12,065 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 52 [2024-11-24 00:05:12,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:05:12,067 INFO L225 Difference]: With dead ends: 199 [2024-11-24 00:05:12,067 INFO L226 Difference]: Without dead ends: 113 [2024-11-24 00:05:12,067 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:05:12,068 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 0 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:05:12,068 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 373 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:05:12,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-24 00:05:12,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2024-11-24 00:05:12,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 78 states have (on average 1.1666666666666667) internal successors, (91), 81 states have internal predecessors, (91), 23 states have call successors, (23), 11 states have call predecessors, (23), 11 states have return successors, (23), 21 states have call predecessors, (23), 21 states have call successors, (23) [2024-11-24 00:05:12,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 137 transitions. [2024-11-24 00:05:12,078 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 137 transitions. Word has length 52 [2024-11-24 00:05:12,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:05:12,078 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 137 transitions. [2024-11-24 00:05:12,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-24 00:05:12,079 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 137 transitions. [2024-11-24 00:05:12,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-24 00:05:12,082 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:05:12,082 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:05:12,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 00:05:12,082 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:05:12,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:05:12,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1412277187, now seen corresponding path program 1 times [2024-11-24 00:05:12,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:05:12,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226490296] [2024-11-24 00:05:12,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:05:12,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:06:48,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:06:56,213 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 00:06:56,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:06:56,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226490296] [2024-11-24 00:06:56,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226490296] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:06:56,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:06:56,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:06:56,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322708796] [2024-11-24 00:06:56,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:06:56,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:06:56,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:06:56,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:06:56,215 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:06:56,215 INFO L87 Difference]: Start difference. First operand 113 states and 137 transitions. Second operand has 7 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-24 00:06:56,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:06:56,867 INFO L93 Difference]: Finished difference Result 119 states and 142 transitions. [2024-11-24 00:06:56,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:06:56,868 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 52 [2024-11-24 00:06:56,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:06:56,870 INFO L225 Difference]: With dead ends: 119 [2024-11-24 00:06:56,870 INFO L226 Difference]: Without dead ends: 117 [2024-11-24 00:06:56,870 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:06:56,871 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 9 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:06:56,871 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 683 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 00:06:56,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-24 00:06:56,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2024-11-24 00:06:56,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 81 states have (on average 1.1604938271604939) internal successors, (94), 84 states have internal predecessors, (94), 23 states have call successors, (23), 12 states have call predecessors, (23), 12 states have return successors, (23), 21 states have call predecessors, (23), 21 states have call successors, (23) [2024-11-24 00:06:56,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 140 transitions. [2024-11-24 00:06:56,882 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 140 transitions. Word has length 52 [2024-11-24 00:06:56,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:06:56,882 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 140 transitions. [2024-11-24 00:06:56,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-24 00:06:56,882 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 140 transitions. [2024-11-24 00:06:56,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-24 00:06:56,884 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:06:56,884 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:06:56,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 00:06:56,884 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:06:56,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:06:56,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1641803194, now seen corresponding path program 1 times [2024-11-24 00:06:56,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:06:56,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294221791] [2024-11-24 00:06:56,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:06:56,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:08:28,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:08:35,514 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 00:08:35,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:08:35,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294221791] [2024-11-24 00:08:35,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294221791] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:08:35,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:08:35,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 00:08:35,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293706252] [2024-11-24 00:08:35,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:08:35,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:08:35,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:08:35,516 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:08:35,516 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:08:35,517 INFO L87 Difference]: Start difference. First operand 117 states and 140 transitions. Second operand has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-24 00:08:36,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:08:36,537 INFO L93 Difference]: Finished difference Result 131 states and 156 transitions. [2024-11-24 00:08:36,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 00:08:36,538 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2024-11-24 00:08:36,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:08:36,539 INFO L225 Difference]: With dead ends: 131 [2024-11-24 00:08:36,539 INFO L226 Difference]: Without dead ends: 129 [2024-11-24 00:08:36,539 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:08:36,540 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 23 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:08:36,540 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 670 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 00:08:36,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-24 00:08:36,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 126. [2024-11-24 00:08:36,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 87 states have (on average 1.1494252873563218) internal successors, (100), 90 states have internal predecessors, (100), 25 states have call successors, (25), 13 states have call predecessors, (25), 13 states have return successors, (25), 22 states have call predecessors, (25), 23 states have call successors, (25) [2024-11-24 00:08:36,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 150 transitions. [2024-11-24 00:08:36,552 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 150 transitions. Word has length 58 [2024-11-24 00:08:36,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:08:36,553 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 150 transitions. [2024-11-24 00:08:36,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-24 00:08:36,553 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 150 transitions. [2024-11-24 00:08:36,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-24 00:08:36,554 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:08:36,555 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:08:36,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 00:08:36,555 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:08:36,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:08:36,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1567893133, now seen corresponding path program 1 times [2024-11-24 00:08:36,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:08:36,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892009030] [2024-11-24 00:08:36,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:08:36,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:10:05,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:10:17,409 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-24 00:10:17,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:10:17,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892009030] [2024-11-24 00:10:17,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892009030] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:10:17,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:10:17,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-24 00:10:17,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29146719] [2024-11-24 00:10:17,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:10:17,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 00:10:17,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:10:17,411 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 00:10:17,411 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:10:17,411 INFO L87 Difference]: Start difference. First operand 126 states and 150 transitions. Second operand has 9 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 5 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-24 00:10:18,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:10:18,400 INFO L93 Difference]: Finished difference Result 135 states and 159 transitions. [2024-11-24 00:10:18,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 00:10:18,401 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 5 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 64 [2024-11-24 00:10:18,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:10:18,402 INFO L225 Difference]: With dead ends: 135 [2024-11-24 00:10:18,403 INFO L226 Difference]: Without dead ends: 133 [2024-11-24 00:10:18,403 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:10:18,404 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 18 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-24 00:10:18,404 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 581 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-24 00:10:18,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-24 00:10:18,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 132. [2024-11-24 00:10:18,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 91 states have (on average 1.1428571428571428) internal successors, (104), 94 states have internal predecessors, (104), 26 states have call successors, (26), 14 states have call predecessors, (26), 14 states have return successors, (26), 23 states have call predecessors, (26), 24 states have call successors, (26) [2024-11-24 00:10:18,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 156 transitions. [2024-11-24 00:10:18,418 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 156 transitions. Word has length 64 [2024-11-24 00:10:18,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:10:18,419 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 156 transitions. [2024-11-24 00:10:18,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 5 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-24 00:10:18,419 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 156 transitions. [2024-11-24 00:10:18,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-24 00:10:18,424 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:10:18,424 INFO L218 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:10:18,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 00:10:18,424 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:10:18,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:10:18,425 INFO L85 PathProgramCache]: Analyzing trace with hash 214332050, now seen corresponding path program 1 times [2024-11-24 00:10:18,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:10:18,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376833150] [2024-11-24 00:10:18,425 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:10:18,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms