./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_ignore_case_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ceffaf-9d04-4c93-b2cf-98c8a1747533/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ceffaf-9d04-4c93-b2cf-98c8a1747533/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ceffaf-9d04-4c93-b2cf-98c8a1747533/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ceffaf-9d04-4c93-b2cf-98c8a1747533/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_ignore_case_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ceffaf-9d04-4c93-b2cf-98c8a1747533/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ceffaf-9d04-4c93-b2cf-98c8a1747533/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 378441a9bcec2a4eb6d1dae870bed526bd742843c0fa114d0ed9d4e2e4a551a9 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:28:32,662 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:28:32,753 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ceffaf-9d04-4c93-b2cf-98c8a1747533/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-27 20:28:32,762 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:28:32,762 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:28:32,801 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:28:32,803 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:28:32,803 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:28:32,803 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:28:32,804 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:28:32,804 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:28:32,805 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:28:32,805 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:28:32,805 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:28:32,806 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:28:32,806 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:28:32,806 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:28:32,806 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:28:32,807 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:28:32,807 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:28:32,807 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:28:32,807 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:28:32,807 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:28:32,807 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:28:32,807 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:28:32,807 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:28:32,808 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:28:32,808 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:28:32,808 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:28:32,808 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:28:32,808 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:28:32,809 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:28:32,809 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:28:32,809 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:28:32,809 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:28:32,809 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:28:32,810 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:28:32,810 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:28:32,810 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:28:32,810 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:28:32,810 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:28:32,810 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:28:32,810 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:28:32,810 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:28:32,810 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:28:32,810 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_f6ceffaf-9d04-4c93-b2cf-98c8a1747533/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 378441a9bcec2a4eb6d1dae870bed526bd742843c0fa114d0ed9d4e2e4a551a9 [2024-11-27 20:28:33,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:28:33,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:28:33,150 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:28:33,151 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:28:33,151 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:28:33,153 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ceffaf-9d04-4c93-b2cf-98c8a1747533/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_ignore_case_harness.i [2024-11-27 20:28:36,121 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ceffaf-9d04-4c93-b2cf-98c8a1747533/bin/uautomizer-verify-aQ6SnzHsRB/data/c4a4f5823/5e2fbc212937476c9d2e5f27426481f9/FLAG025c15f55 [2024-11-27 20:28:36,911 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:28:36,915 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ceffaf-9d04-4c93-b2cf-98c8a1747533/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_ignore_case_harness.i [2024-11-27 20:28:36,957 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ceffaf-9d04-4c93-b2cf-98c8a1747533/bin/uautomizer-verify-aQ6SnzHsRB/data/c4a4f5823/5e2fbc212937476c9d2e5f27426481f9/FLAG025c15f55 [2024-11-27 20:28:36,976 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ceffaf-9d04-4c93-b2cf-98c8a1747533/bin/uautomizer-verify-aQ6SnzHsRB/data/c4a4f5823/5e2fbc212937476c9d2e5f27426481f9 [2024-11-27 20:28:36,978 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:28:36,980 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:28:36,981 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:28:36,982 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:28:36,987 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:28:36,987 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:28:36" (1/1) ... [2024-11-27 20:28:36,988 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fff3363 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:28:36, skipping insertion in model container [2024-11-27 20:28:36,989 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:28:36" (1/1) ... [2024-11-27 20:28:37,107 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:28:37,402 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_f6ceffaf-9d04-4c93-b2cf-98c8a1747533/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_ignore_case_harness.i[4501,4514] [2024-11-27 20:28:37,411 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_f6ceffaf-9d04-4c93-b2cf-98c8a1747533/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_ignore_case_harness.i[4561,4574] [2024-11-27 20:28:38,418 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:28:38,419 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:28:38,420 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:28:38,421 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:28:38,422 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:28:38,449 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:28:38,450 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:28:38,454 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:28:38,457 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:28:39,290 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:28:39,291 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:28:39,376 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:28:39,478 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:28:39,496 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_f6ceffaf-9d04-4c93-b2cf-98c8a1747533/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_ignore_case_harness.i[4501,4514] [2024-11-27 20:28:39,500 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_f6ceffaf-9d04-4c93-b2cf-98c8a1747533/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_ignore_case_harness.i[4561,4574] [2024-11-27 20:28:39,558 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:28:39,559 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:28:39,559 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:28:39,561 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:28:39,561 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:28:39,572 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:28:39,572 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:28:39,573 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:28:39,573 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:28:39,732 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8277] [2024-11-27 20:28:39,734 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:28:39,735 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:28:39,752 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8763-8774] [2024-11-27 20:28:39,775 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:28:40,062 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:28:40,063 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:28:40 WrapperNode [2024-11-27 20:28:40,063 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:28:40,064 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:28:40,064 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:28:40,064 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:28:40,072 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:28:40" (1/1) ... [2024-11-27 20:28:40,178 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:28:40" (1/1) ... [2024-11-27 20:28:40,257 INFO L138 Inliner]: procedures = 680, calls = 2663, calls flagged for inlining = 59, calls inlined = 5, statements flattened = 876 [2024-11-27 20:28:40,257 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:28:40,258 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:28:40,258 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:28:40,258 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:28:40,278 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:28:40" (1/1) ... [2024-11-27 20:28:40,278 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:28:40" (1/1) ... [2024-11-27 20:28:40,293 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:28:40" (1/1) ... [2024-11-27 20:28:40,389 INFO L175 MemorySlicer]: Split 576 memory accesses to 6 slices as follows [2, 259, 238, 6, 62, 9]. 45 percent of accesses are in the largest equivalence class. The 29 initializations are split as follows [2, 0, 6, 0, 16, 5]. The 497 writes are split as follows [0, 257, 232, 2, 6, 0]. [2024-11-27 20:28:40,389 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:28:40" (1/1) ... [2024-11-27 20:28:40,393 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:28:40" (1/1) ... [2024-11-27 20:28:40,474 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:28:40" (1/1) ... [2024-11-27 20:28:40,476 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:28:40" (1/1) ... [2024-11-27 20:28:40,484 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:28:40" (1/1) ... [2024-11-27 20:28:40,498 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:28:40" (1/1) ... [2024-11-27 20:28:40,507 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:28:40" (1/1) ... [2024-11-27 20:28:40,519 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:28:40,520 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:28:40,520 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:28:40,520 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:28:40,521 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:28:40" (1/1) ... [2024-11-27 20:28:40,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:28:40,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ceffaf-9d04-4c93-b2cf-98c8a1747533/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:28:40,566 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ceffaf-9d04-4c93-b2cf-98c8a1747533/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:28:40,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ceffaf-9d04-4c93-b2cf-98c8a1747533/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:28:40,600 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2024-11-27 20:28:40,600 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2024-11-27 20:28:40,600 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq_ignore_case [2024-11-27 20:28:40,601 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq_ignore_case [2024-11-27 20:28:40,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-27 20:28:40,601 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-27 20:28:40,602 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-27 20:28:40,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-27 20:28:40,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-27 20:28:40,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-27 20:28:40,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-27 20:28:40,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-27 20:28:40,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-27 20:28:40,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-27 20:28:40,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-27 20:28:40,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-27 20:28:40,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-27 20:28:40,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-27 20:28:40,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-27 20:28:40,604 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-27 20:28:40,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-27 20:28:40,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-27 20:28:40,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:28:40,605 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2024-11-27 20:28:40,605 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2024-11-27 20:28:40,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-27 20:28:40,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-27 20:28:40,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-27 20:28:40,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-27 20:28:40,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-27 20:28:40,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-27 20:28:40,605 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_buf_has_allocated_buffer_member [2024-11-27 20:28:40,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_buf_has_allocated_buffer_member [2024-11-27 20:28:40,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:28:40,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:28:40,605 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-27 20:28:40,605 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-27 20:28:40,605 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2024-11-27 20:28:40,605 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2024-11-27 20:28:40,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-27 20:28:40,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-27 20:28:40,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-27 20:28:40,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-27 20:28:40,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-27 20:28:40,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-27 20:28:40,606 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-27 20:28:40,606 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-27 20:28:40,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-27 20:28:40,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-27 20:28:40,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-27 20:28:40,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-27 20:28:40,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-27 20:28:40,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-27 20:28:40,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-27 20:28:40,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-27 20:28:40,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-27 20:28:40,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-27 20:28:40,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-27 20:28:40,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-27 20:28:40,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-27 20:28:40,609 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-27 20:28:40,609 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-27 20:28:40,609 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_bounded [2024-11-27 20:28:40,609 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_bounded [2024-11-27 20:28:40,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-27 20:28:40,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-27 20:28:40,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-27 20:28:40,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-27 20:28:40,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-27 20:28:40,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-27 20:28:40,610 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_buf_equivalence [2024-11-27 20:28:40,610 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_buf_equivalence [2024-11-27 20:28:40,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:28:40,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 20:28:40,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-27 20:28:40,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-27 20:28:40,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-27 20:28:40,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-27 20:28:40,986 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:28:40,988 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:28:50,561 INFO L? ?]: Removed 80 outVars from TransFormulas that were not future-live. [2024-11-27 20:28:50,562 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:28:50,576 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:28:50,576 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-27 20:28:50,577 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:28:50 BoogieIcfgContainer [2024-11-27 20:28:50,577 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:28:50,580 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:28:50,580 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:28:50,587 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:28:50,587 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:28:36" (1/3) ... [2024-11-27 20:28:50,588 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5181bf87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:28:50, skipping insertion in model container [2024-11-27 20:28:50,588 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:28:40" (2/3) ... [2024-11-27 20:28:50,589 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5181bf87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:28:50, skipping insertion in model container [2024-11-27 20:28:50,589 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:28:50" (3/3) ... [2024-11-27 20:28:50,590 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_eq_ignore_case_harness.i [2024-11-27 20:28:50,610 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:28:50,612 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_byte_buf_eq_ignore_case_harness.i that has 13 procedures, 143 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-27 20:28:50,703 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:28:50,719 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;@49e343f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:28:50,719 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 20:28:50,725 INFO L276 IsEmpty]: Start isEmpty. Operand has 143 states, 87 states have (on average 1.2413793103448276) internal successors, (108), 88 states have internal predecessors, (108), 42 states have call successors, (42), 12 states have call predecessors, (42), 12 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-27 20:28:50,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-27 20:28:50,742 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:28:50,744 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1] [2024-11-27 20:28:50,745 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:28:50,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:28:50,752 INFO L85 PathProgramCache]: Analyzing trace with hash -780859386, now seen corresponding path program 1 times [2024-11-27 20:28:50,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:28:50,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250970259] [2024-11-27 20:28:50,762 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:28:50,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:13,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:14,788 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-27 20:30:14,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:14,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250970259] [2024-11-27 20:30:14,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250970259] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:30:14,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979455339] [2024-11-27 20:30:14,790 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:14,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:14,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ceffaf-9d04-4c93-b2cf-98c8a1747533/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:30:14,796 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ceffaf-9d04-4c93-b2cf-98c8a1747533/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:30:14,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ceffaf-9d04-4c93-b2cf-98c8a1747533/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:31:42,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:31:42,892 INFO L256 TraceCheckSpWp]: Trace formula consists of 7876 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-27 20:31:42,913 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:31:42,948 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-27 20:31:42,948 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:31:42,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979455339] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:31:42,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:31:42,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-27 20:31:42,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829753100] [2024-11-27 20:31:42,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:31:42,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 20:31:42,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:31:42,985 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 20:31:42,986 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:31:42,989 INFO L87 Difference]: Start difference. First operand has 143 states, 87 states have (on average 1.2413793103448276) internal successors, (108), 88 states have internal predecessors, (108), 42 states have call successors, (42), 12 states have call predecessors, (42), 12 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-27 20:31:43,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:31:43,033 INFO L93 Difference]: Finished difference Result 282 states and 407 transitions. [2024-11-27 20:31:43,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 20:31:43,035 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 113 [2024-11-27 20:31:43,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:31:43,044 INFO L225 Difference]: With dead ends: 282 [2024-11-27 20:31:43,045 INFO L226 Difference]: Without dead ends: 138 [2024-11-27 20:31:43,050 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:31:43,053 INFO L435 NwaCegarLoop]: 189 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, 189 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 [2024-11-27 20:31:43,054 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:31:43,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-27 20:31:43,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2024-11-27 20:31:43,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 83 states have (on average 1.216867469879518) internal successors, (101), 84 states have internal predecessors, (101), 42 states have call successors, (42), 12 states have call predecessors, (42), 12 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-11-27 20:31:43,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 184 transitions. [2024-11-27 20:31:43,133 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 184 transitions. Word has length 113 [2024-11-27 20:31:43,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:31:43,138 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 184 transitions. [2024-11-27 20:31:43,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-27 20:31:43,138 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 184 transitions. [2024-11-27 20:31:43,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-27 20:31:43,145 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:31:43,146 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1] [2024-11-27 20:31:43,179 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ceffaf-9d04-4c93-b2cf-98c8a1747533/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 20:31:43,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ceffaf-9d04-4c93-b2cf-98c8a1747533/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-27 20:31:43,350 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:31:43,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:31:43,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1840002180, now seen corresponding path program 1 times [2024-11-27 20:31:43,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:31:43,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772900373] [2024-11-27 20:31:43,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:31:43,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:33:08,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:33:11,935 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-27 20:33:11,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:33:11,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772900373] [2024-11-27 20:33:11,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772900373] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:33:11,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118923646] [2024-11-27 20:33:11,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:33:11,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:33:11,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ceffaf-9d04-4c93-b2cf-98c8a1747533/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:33:11,939 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ceffaf-9d04-4c93-b2cf-98c8a1747533/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:33:11,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ceffaf-9d04-4c93-b2cf-98c8a1747533/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:34:49,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:49,552 INFO L256 TraceCheckSpWp]: Trace formula consists of 7876 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:34:49,563 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:34:50,253 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-27 20:34:50,253 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:34:50,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118923646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:34:50,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:34:50,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-27 20:34:50,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869905702] [2024-11-27 20:34:50,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:50,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:34:50,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:50,257 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:34:50,257 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:34:50,257 INFO L87 Difference]: Start difference. First operand 138 states and 184 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-27 20:34:51,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:34:51,610 INFO L93 Difference]: Finished difference Result 272 states and 367 transitions. [2024-11-27 20:34:51,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:34:51,611 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 113 [2024-11-27 20:34:51,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:34:51,615 INFO L225 Difference]: With dead ends: 272 [2024-11-27 20:34:51,615 INFO L226 Difference]: Without dead ends: 141 [2024-11-27 20:34:51,617 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-27 20:34:51,618 INFO L435 NwaCegarLoop]: 147 mSDtfsCounter, 175 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:34:51,618 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 415 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-27 20:34:51,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-27 20:34:51,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2024-11-27 20:34:51,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 85 states have (on average 1.2117647058823529) internal successors, (103), 87 states have internal predecessors, (103), 42 states have call successors, (42), 12 states have call predecessors, (42), 13 states have return successors, (47), 41 states have call predecessors, (47), 41 states have call successors, (47) [2024-11-27 20:34:51,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 192 transitions. [2024-11-27 20:34:51,646 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 192 transitions. Word has length 113 [2024-11-27 20:34:51,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:34:51,646 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 192 transitions. [2024-11-27 20:34:51,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-27 20:34:51,647 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 192 transitions. [2024-11-27 20:34:51,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-27 20:34:51,652 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:34:51,652 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:34:51,676 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ceffaf-9d04-4c93-b2cf-98c8a1747533/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 20:34:51,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ceffaf-9d04-4c93-b2cf-98c8a1747533/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:34:51,853 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:34:51,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:51,854 INFO L85 PathProgramCache]: Analyzing trace with hash 583546193, now seen corresponding path program 1 times [2024-11-27 20:34:51,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:51,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044548643] [2024-11-27 20:34:51,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:51,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:36:30,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:36:32,214 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-27 20:36:32,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:36:32,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044548643] [2024-11-27 20:36:32,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044548643] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:36:32,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557999135] [2024-11-27 20:36:32,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:36:32,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:36:32,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ceffaf-9d04-4c93-b2cf-98c8a1747533/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:36:32,222 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ceffaf-9d04-4c93-b2cf-98c8a1747533/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:36:32,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ceffaf-9d04-4c93-b2cf-98c8a1747533/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:38:05,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:38:05,638 INFO L256 TraceCheckSpWp]: Trace formula consists of 7890 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 20:38:05,645 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:38:05,687 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-27 20:38:05,687 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:38:05,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557999135] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:38:05,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:38:05,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-27 20:38:05,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992061653] [2024-11-27 20:38:05,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:38:05,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:38:05,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:38:05,689 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:38:05,690 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:38:05,690 INFO L87 Difference]: Start difference. First operand 141 states and 192 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-27 20:38:05,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:38:05,812 INFO L93 Difference]: Finished difference Result 278 states and 385 transitions. [2024-11-27 20:38:05,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:38:05,815 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 119 [2024-11-27 20:38:05,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:38:05,817 INFO L225 Difference]: With dead ends: 278 [2024-11-27 20:38:05,817 INFO L226 Difference]: Without dead ends: 144 [2024-11-27 20:38:05,822 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:38:05,823 INFO L435 NwaCegarLoop]: 181 mSDtfsCounter, 1 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 537 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 [2024-11-27 20:38:05,823 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 537 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:38:05,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-27 20:38:05,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 143. [2024-11-27 20:38:05,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 87 states have (on average 1.206896551724138) internal successors, (105), 89 states have internal predecessors, (105), 42 states have call successors, (42), 12 states have call predecessors, (42), 13 states have return successors, (47), 41 states have call predecessors, (47), 41 states have call successors, (47) [2024-11-27 20:38:05,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 194 transitions. [2024-11-27 20:38:05,851 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 194 transitions. Word has length 119 [2024-11-27 20:38:05,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:38:05,852 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 194 transitions. [2024-11-27 20:38:05,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-27 20:38:05,852 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 194 transitions. [2024-11-27 20:38:05,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-27 20:38:05,854 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:38:05,854 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:38:05,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ceffaf-9d04-4c93-b2cf-98c8a1747533/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-27 20:38:06,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ceffaf-9d04-4c93-b2cf-98c8a1747533/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:38:06,055 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:38:06,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:38:06,055 INFO L85 PathProgramCache]: Analyzing trace with hash -474291885, now seen corresponding path program 1 times [2024-11-27 20:38:06,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:38:06,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114859565] [2024-11-27 20:38:06,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:38:06,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:39:28,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:39:30,203 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-27 20:39:30,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:39:30,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114859565] [2024-11-27 20:39:30,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114859565] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:39:30,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538762677] [2024-11-27 20:39:30,204 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:39:30,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:39:30,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ceffaf-9d04-4c93-b2cf-98c8a1747533/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:39:30,209 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ceffaf-9d04-4c93-b2cf-98c8a1747533/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:39:30,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ceffaf-9d04-4c93-b2cf-98c8a1747533/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 20:40:56,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:40:56,834 INFO L256 TraceCheckSpWp]: Trace formula consists of 7885 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 20:40:56,845 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:40:56,901 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-27 20:40:56,901 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:40:56,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538762677] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:40:56,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:40:56,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-27 20:40:56,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790802074] [2024-11-27 20:40:56,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:40:56,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:40:56,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:40:56,905 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:40:56,906 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:40:56,906 INFO L87 Difference]: Start difference. First operand 143 states and 194 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-27 20:40:57,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:40:57,057 INFO L93 Difference]: Finished difference Result 281 states and 388 transitions. [2024-11-27 20:40:57,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:40:57,058 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 119 [2024-11-27 20:40:57,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:40:57,060 INFO L225 Difference]: With dead ends: 281 [2024-11-27 20:40:57,061 INFO L226 Difference]: Without dead ends: 145 [2024-11-27 20:40:57,061 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:40:57,062 INFO L435 NwaCegarLoop]: 182 mSDtfsCounter, 0 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 538 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 [2024-11-27 20:40:57,063 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 538 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:40:57,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-27 20:40:57,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2024-11-27 20:40:57,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 89 states have (on average 1.202247191011236) internal successors, (107), 91 states have internal predecessors, (107), 42 states have call successors, (42), 12 states have call predecessors, (42), 13 states have return successors, (47), 41 states have call predecessors, (47), 41 states have call successors, (47) [2024-11-27 20:40:57,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 196 transitions. [2024-11-27 20:40:57,078 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 196 transitions. Word has length 119 [2024-11-27 20:40:57,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:40:57,079 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 196 transitions. [2024-11-27 20:40:57,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-27 20:40:57,079 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 196 transitions. [2024-11-27 20:40:57,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-27 20:40:57,081 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:40:57,081 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:40:57,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ceffaf-9d04-4c93-b2cf-98c8a1747533/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-27 20:40:57,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ceffaf-9d04-4c93-b2cf-98c8a1747533/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:40:57,282 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:40:57,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:40:57,282 INFO L85 PathProgramCache]: Analyzing trace with hash -741310001, now seen corresponding path program 1 times [2024-11-27 20:40:57,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:40:57,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786325456] [2024-11-27 20:40:57,282 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:40:57,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:42:23,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:42:26,642 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-27 20:42:26,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:42:26,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786325456] [2024-11-27 20:42:26,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786325456] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:42:26,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937020654] [2024-11-27 20:42:26,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:42:26,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:42:26,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ceffaf-9d04-4c93-b2cf-98c8a1747533/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:42:26,648 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ceffaf-9d04-4c93-b2cf-98c8a1747533/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:42:26,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ceffaf-9d04-4c93-b2cf-98c8a1747533/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process