./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_destroy_secure_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_76870f63-04e4-4bf9-9b41-241434d1c722/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76870f63-04e4-4bf9-9b41-241434d1c722/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_76870f63-04e4-4bf9-9b41-241434d1c722/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76870f63-04e4-4bf9-9b41-241434d1c722/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_destroy_secure_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76870f63-04e4-4bf9-9b41-241434d1c722/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_76870f63-04e4-4bf9-9b41-241434d1c722/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 bc5ed5fb850d9a2c9d9a14514ffc7939afe81a277edfb59aefd3c5f66024eda8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:03:03,933 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:03:04,043 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76870f63-04e4-4bf9-9b41-241434d1c722/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-28 03:03:04,055 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:03:04,055 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:03:04,086 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:03:04,087 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:03:04,087 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:03:04,088 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:03:04,088 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:03:04,088 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:03:04,088 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:03:04,089 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:03:04,089 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:03:04,089 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:03:04,089 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:03:04,089 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:03:04,089 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:03:04,090 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:03:04,090 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:03:04,090 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:03:04,090 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:03:04,090 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:03:04,090 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:03:04,090 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:03:04,091 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:03:04,091 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:03:04,093 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:03:04,093 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:03:04,093 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:03:04,094 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:03:04,094 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:03:04,094 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:03:04,094 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:03:04,094 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:03:04,095 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:03:04,095 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:03:04,095 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:03:04,095 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:03:04,095 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:03:04,095 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:03:04,095 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:03:04,096 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:03:04,096 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:03:04,096 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:03:04,096 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_76870f63-04e4-4bf9-9b41-241434d1c722/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 -> bc5ed5fb850d9a2c9d9a14514ffc7939afe81a277edfb59aefd3c5f66024eda8 [2024-11-28 03:03:04,496 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:03:04,509 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:03:04,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:03:04,514 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:03:04,514 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:03:04,517 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76870f63-04e4-4bf9-9b41-241434d1c722/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/aws-c-common/aws_string_destroy_secure_harness.i [2024-11-28 03:03:07,759 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76870f63-04e4-4bf9-9b41-241434d1c722/bin/uautomizer-verify-aQ6SnzHsRB/data/5059f98b6/b343aee204d145cf887e97cfbdbb1d77/FLAG3c4515bac [2024-11-28 03:03:08,362 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:03:08,363 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76870f63-04e4-4bf9-9b41-241434d1c722/sv-benchmarks/c/aws-c-common/aws_string_destroy_secure_harness.i [2024-11-28 03:03:08,413 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76870f63-04e4-4bf9-9b41-241434d1c722/bin/uautomizer-verify-aQ6SnzHsRB/data/5059f98b6/b343aee204d145cf887e97cfbdbb1d77/FLAG3c4515bac [2024-11-28 03:03:08,437 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76870f63-04e4-4bf9-9b41-241434d1c722/bin/uautomizer-verify-aQ6SnzHsRB/data/5059f98b6/b343aee204d145cf887e97cfbdbb1d77 [2024-11-28 03:03:08,441 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:03:08,443 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:03:08,447 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:03:08,448 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:03:08,454 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:03:08,455 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:03:08" (1/1) ... [2024-11-28 03:03:08,456 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79797b2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:08, skipping insertion in model container [2024-11-28 03:03:08,459 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:03:08" (1/1) ... [2024-11-28 03:03:08,586 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:03:08,936 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_76870f63-04e4-4bf9-9b41-241434d1c722/sv-benchmarks/c/aws-c-common/aws_string_destroy_secure_harness.i[4499,4512] [2024-11-28 03:03:08,946 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_76870f63-04e4-4bf9-9b41-241434d1c722/sv-benchmarks/c/aws-c-common/aws_string_destroy_secure_harness.i[4559,4572] [2024-11-28 03:03:10,172 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:03:10,173 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:03:10,174 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:03:10,175 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:03:10,180 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:03:10,203 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:03:10,204 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:03:10,207 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:03:10,208 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:03:11,297 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:03:11,300 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:03:11,433 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:03:11,517 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:03:11,531 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_76870f63-04e4-4bf9-9b41-241434d1c722/sv-benchmarks/c/aws-c-common/aws_string_destroy_secure_harness.i[4499,4512] [2024-11-28 03:03:11,534 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_76870f63-04e4-4bf9-9b41-241434d1c722/sv-benchmarks/c/aws-c-common/aws_string_destroy_secure_harness.i[4559,4572] [2024-11-28 03:03:11,593 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:03:11,594 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:03:11,594 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:03:11,595 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:03:11,597 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:03:11,603 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:03:11,603 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:03:11,604 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:03:11,607 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:03:11,787 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8253] [2024-11-28 03:03:11,788 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:03:11,789 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:03:11,804 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8739-8750] [2024-11-28 03:03:11,833 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:03:12,127 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:03:12,128 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:12 WrapperNode [2024-11-28 03:03:12,128 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:03:12,129 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:03:12,130 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:03:12,130 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:03:12,137 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:12" (1/1) ... [2024-11-28 03:03:12,252 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:12" (1/1) ... [2024-11-28 03:03:12,354 INFO L138 Inliner]: procedures = 682, calls = 2778, calls flagged for inlining = 60, calls inlined = 8, statements flattened = 818 [2024-11-28 03:03:12,356 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:03:12,357 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:03:12,357 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:03:12,357 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:03:12,376 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:12" (1/1) ... [2024-11-28 03:03:12,378 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:12" (1/1) ... [2024-11-28 03:03:12,387 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:12" (1/1) ... [2024-11-28 03:03:12,510 INFO L175 MemorySlicer]: Split 531 memory accesses to 6 slices as follows [2, 257, 238, 16, 12, 6]. 48 percent of accesses are in the largest equivalence class. The 29 initializations are split as follows [2, 0, 6, 16, 0, 5]. The 493 writes are split as follows [0, 257, 232, 0, 4, 0]. [2024-11-28 03:03:12,510 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:12" (1/1) ... [2024-11-28 03:03:12,510 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:12" (1/1) ... [2024-11-28 03:03:12,569 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:12" (1/1) ... [2024-11-28 03:03:12,575 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:12" (1/1) ... [2024-11-28 03:03:12,583 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:12" (1/1) ... [2024-11-28 03:03:12,599 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:12" (1/1) ... [2024-11-28 03:03:12,606 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:12" (1/1) ... [2024-11-28 03:03:12,643 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:03:12,648 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:03:12,648 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:03:12,648 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:03:12,649 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:12" (1/1) ... [2024-11-28 03:03:12,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:03:12,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76870f63-04e4-4bf9-9b41-241434d1c722/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:03:12,710 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76870f63-04e4-4bf9-9b41-241434d1c722/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:03:12,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76870f63-04e4-4bf9-9b41-241434d1c722/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:03:12,743 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2024-11-28 03:03:12,743 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2024-11-28 03:03:12,744 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2024-11-28 03:03:12,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2024-11-28 03:03:12,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 03:03:12,745 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-28 03:03:12,745 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-28 03:03:12,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-28 03:03:12,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-28 03:03:12,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-28 03:03:12,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-28 03:03:12,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-28 03:03:12,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-28 03:03:12,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 03:03:12,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 03:03:12,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 03:03:12,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 03:03:12,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-28 03:03:12,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-28 03:03:12,746 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 03:03:12,746 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 03:03:12,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 03:03:12,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:03:12,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 03:03:12,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 03:03:12,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-28 03:03:12,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-28 03:03:12,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-28 03:03:12,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-28 03:03:12,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:03:12,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:03:12,748 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-28 03:03:12,748 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-28 03:03:12,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-28 03:03:12,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-28 03:03:12,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-28 03:03:12,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-28 03:03:12,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-28 03:03:12,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-28 03:03:12,749 INFO L130 BoogieDeclarations]: Found specification of procedure aws_secure_zero [2024-11-28 03:03:12,749 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_secure_zero [2024-11-28 03:03:12,749 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2024-11-28 03:03:12,750 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2024-11-28 03:03:12,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-28 03:03:12,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-28 03:03:12,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-28 03:03:12,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2024-11-28 03:03:12,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#4 [2024-11-28 03:03:12,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#5 [2024-11-28 03:03:12,751 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-28 03:03:12,751 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-28 03:03:12,751 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-28 03:03:12,751 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2024-11-28 03:03:12,751 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#4 [2024-11-28 03:03:12,751 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#5 [2024-11-28 03:03:12,751 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_bytes [2024-11-28 03:03:12,751 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_bytes [2024-11-28 03:03:12,751 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 03:03:12,751 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 03:03:12,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 03:03:12,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 03:03:12,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 03:03:12,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-28 03:03:12,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-28 03:03:12,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-28 03:03:12,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 03:03:12,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-28 03:03:12,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-28 03:03:12,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-28 03:03:12,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-28 03:03:12,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-28 03:03:12,754 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-28 03:03:12,754 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-28 03:03:12,754 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-28 03:03:12,754 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-28 03:03:12,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 03:03:12,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 03:03:12,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 03:03:12,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 03:03:12,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-28 03:03:12,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-28 03:03:12,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:03:12,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 03:03:12,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 03:03:12,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 03:03:12,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 03:03:12,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-28 03:03:13,168 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:03:13,171 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:03:22,501 INFO L? ?]: Removed 86 outVars from TransFormulas that were not future-live. [2024-11-28 03:03:22,501 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:03:22,517 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:03:22,517 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 03:03:22,517 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:03:22 BoogieIcfgContainer [2024-11-28 03:03:22,517 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:03:22,521 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:03:22,522 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:03:22,527 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:03:22,527 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:03:08" (1/3) ... [2024-11-28 03:03:22,529 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19c3c29c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:03:22, skipping insertion in model container [2024-11-28 03:03:22,529 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:12" (2/3) ... [2024-11-28 03:03:22,529 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19c3c29c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:03:22, skipping insertion in model container [2024-11-28 03:03:22,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:03:22" (3/3) ... [2024-11-28 03:03:22,531 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_string_destroy_secure_harness.i [2024-11-28 03:03:22,550 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:03:22,553 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_string_destroy_secure_harness.i that has 18 procedures, 122 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2024-11-28 03:03:22,625 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:03:22,638 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;@67d2ee97, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:03:22,638 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:03:22,644 INFO L276 IsEmpty]: Start isEmpty. Operand has 102 states, 68 states have (on average 1.1911764705882353) internal successors, (81), 69 states have internal predecessors, (81), 20 states have call successors, (20), 12 states have call predecessors, (20), 12 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-28 03:03:22,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-28 03:03:22,655 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:22,656 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2024-11-28 03:03:22,656 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:03:22,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:22,662 INFO L85 PathProgramCache]: Analyzing trace with hash 69661278, now seen corresponding path program 1 times [2024-11-28 03:03:22,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:22,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968600792] [2024-11-28 03:03:22,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:22,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:04:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:56,406 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-28 03:04:56,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:04:56,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968600792] [2024-11-28 03:04:56,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968600792] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:04:56,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:04:56,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 03:04:56,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013807610] [2024-11-28 03:04:56,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:04:56,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:04:56,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:04:56,438 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:04:56,439 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:04:56,442 INFO L87 Difference]: Start difference. First operand has 102 states, 68 states have (on average 1.1911764705882353) internal successors, (81), 69 states have internal predecessors, (81), 20 states have call successors, (20), 12 states have call predecessors, (20), 12 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 9 states have internal predecessors, (33), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-28 03:04:57,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:04:57,345 INFO L93 Difference]: Finished difference Result 199 states and 247 transitions. [2024-11-28 03:04:57,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 03:04:57,348 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 9 states have internal predecessors, (33), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) Word has length 63 [2024-11-28 03:04:57,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:04:57,357 INFO L225 Difference]: With dead ends: 199 [2024-11-28 03:04:57,357 INFO L226 Difference]: Without dead ends: 93 [2024-11-28 03:04:57,362 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:04:57,368 INFO L435 NwaCegarLoop]: 108 mSDtfsCounter, 10 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:04:57,370 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 946 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 03:04:57,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-28 03:04:57,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-11-28 03:04:57,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 61 states have (on average 1.1147540983606556) internal successors, (68), 61 states have internal predecessors, (68), 20 states have call successors, (20), 12 states have call predecessors, (20), 11 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-28 03:04:57,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 107 transitions. [2024-11-28 03:04:57,426 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 107 transitions. Word has length 63 [2024-11-28 03:04:57,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:04:57,430 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 107 transitions. [2024-11-28 03:04:57,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 9 states have internal predecessors, (33), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-28 03:04:57,430 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 107 transitions. [2024-11-28 03:04:57,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-28 03:04:57,435 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:04:57,435 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1] [2024-11-28 03:04:57,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:04:57,436 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:04:57,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:04:57,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1298033871, now seen corresponding path program 1 times [2024-11-28 03:04:57,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:04:57,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182039368] [2024-11-28 03:04:57,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:57,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:24,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:27,272 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-28 03:06:27,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:27,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182039368] [2024-11-28 03:06:27,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182039368] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:06:27,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:06:27,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:06:27,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946974095] [2024-11-28 03:06:27,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:06:27,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:06:27,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:27,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:06:27,280 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:06:27,281 INFO L87 Difference]: Start difference. First operand 93 states and 107 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-28 03:06:27,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:06:27,448 INFO L93 Difference]: Finished difference Result 152 states and 174 transitions. [2024-11-28 03:06:27,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:06:27,449 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 94 [2024-11-28 03:06:27,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:06:27,452 INFO L225 Difference]: With dead ends: 152 [2024-11-28 03:06:27,452 INFO L226 Difference]: Without dead ends: 93 [2024-11-28 03:06:27,453 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:06:27,454 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 0 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:06:27,454 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 303 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:06:27,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-28 03:06:27,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-11-28 03:06:27,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 61 states have (on average 1.098360655737705) internal successors, (67), 61 states have internal predecessors, (67), 20 states have call successors, (20), 12 states have call predecessors, (20), 11 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-28 03:06:27,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 106 transitions. [2024-11-28 03:06:27,481 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 106 transitions. Word has length 94 [2024-11-28 03:06:27,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:06:27,481 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 106 transitions. [2024-11-28 03:06:27,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-28 03:06:27,482 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 106 transitions. [2024-11-28 03:06:27,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-28 03:06:27,485 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:06:27,485 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 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] [2024-11-28 03:06:27,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:06:27,485 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:06:27,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:27,490 INFO L85 PathProgramCache]: Analyzing trace with hash 577950111, now seen corresponding path program 1 times [2024-11-28 03:06:27,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:27,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919073783] [2024-11-28 03:06:27,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:27,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:08:01,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:09,631 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-28 03:08:09,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:08:09,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919073783] [2024-11-28 03:08:09,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919073783] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:08:09,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740480539] [2024-11-28 03:08:09,632 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:09,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:08:09,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76870f63-04e4-4bf9-9b41-241434d1c722/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:08:09,636 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76870f63-04e4-4bf9-9b41-241434d1c722/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:08:09,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76870f63-04e4-4bf9-9b41-241434d1c722/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:09:43,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:09:43,870 INFO L256 TraceCheckSpWp]: Trace formula consists of 7794 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-28 03:09:43,884 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:09:46,916 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 03:09:46,916 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:09:46,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740480539] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:09:46,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:09:46,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14] total 26 [2024-11-28 03:09:46,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196618244] [2024-11-28 03:09:46,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:09:46,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 03:09:46,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:09:46,919 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 03:09:46,919 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=595, Unknown=0, NotChecked=0, Total=650 [2024-11-28 03:09:46,920 INFO L87 Difference]: Start difference. First operand 93 states and 106 transitions. Second operand has 14 states, 14 states have (on average 4.5) internal successors, (63), 12 states have internal predecessors, (63), 4 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-28 03:09:48,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:09:48,618 INFO L93 Difference]: Finished difference Result 161 states and 185 transitions. [2024-11-28 03:09:48,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 03:09:48,619 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.5) internal successors, (63), 12 states have internal predecessors, (63), 4 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 103 [2024-11-28 03:09:48,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:09:48,622 INFO L225 Difference]: With dead ends: 161 [2024-11-28 03:09:48,622 INFO L226 Difference]: Without dead ends: 101 [2024-11-28 03:09:48,623 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=71, Invalid=741, Unknown=0, NotChecked=0, Total=812 [2024-11-28 03:09:48,624 INFO L435 NwaCegarLoop]: 92 mSDtfsCounter, 20 mSDsluCounter, 976 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:09:48,624 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 1068 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 03:09:48,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-28 03:09:48,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 98. [2024-11-28 03:09:48,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 65 states have (on average 1.1076923076923078) internal successors, (72), 66 states have internal predecessors, (72), 20 states have call successors, (20), 12 states have call predecessors, (20), 12 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) [2024-11-28 03:09:48,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 112 transitions. [2024-11-28 03:09:48,637 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 112 transitions. Word has length 103 [2024-11-28 03:09:48,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:09:48,637 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 112 transitions. [2024-11-28 03:09:48,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.5) internal successors, (63), 12 states have internal predecessors, (63), 4 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-28 03:09:48,638 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 112 transitions. [2024-11-28 03:09:48,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-28 03:09:48,639 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:09:48,640 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 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, 1] [2024-11-28 03:09:48,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76870f63-04e4-4bf9-9b41-241434d1c722/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 03:09:48,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76870f63-04e4-4bf9-9b41-241434d1c722/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-28 03:09:48,841 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:09:48,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:09:48,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1383624547, now seen corresponding path program 1 times [2024-11-28 03:09:48,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:09:48,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921066369] [2024-11-28 03:09:48,841 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:09:48,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:11:18,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:25,430 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-28 03:11:25,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:11:25,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921066369] [2024-11-28 03:11:25,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921066369] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:11:25,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:11:25,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-28 03:11:25,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615043402] [2024-11-28 03:11:25,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:11:25,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 03:11:25,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:11:25,433 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 03:11:25,434 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2024-11-28 03:11:25,434 INFO L87 Difference]: Start difference. First operand 98 states and 112 transitions. Second operand has 17 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 7 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (15), 8 states have call predecessors, (15), 7 states have call successors, (15) [2024-11-28 03:11:27,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:11:27,545 INFO L93 Difference]: Finished difference Result 138 states and 160 transitions. [2024-11-28 03:11:27,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 03:11:27,545 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 7 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (15), 8 states have call predecessors, (15), 7 states have call successors, (15) Word has length 103 [2024-11-28 03:11:27,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:11:27,547 INFO L225 Difference]: With dead ends: 138 [2024-11-28 03:11:27,547 INFO L226 Difference]: Without dead ends: 93 [2024-11-28 03:11:27,548 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2024-11-28 03:11:27,549 INFO L435 NwaCegarLoop]: 100 mSDtfsCounter, 22 mSDsluCounter, 1343 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 1443 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:11:27,550 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 1443 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-28 03:11:27,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-28 03:11:27,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-11-28 03:11:27,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 61 states have (on average 1.0655737704918034) internal successors, (65), 61 states have internal predecessors, (65), 20 states have call successors, (20), 12 states have call predecessors, (20), 11 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-28 03:11:27,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 104 transitions. [2024-11-28 03:11:27,561 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 104 transitions. Word has length 103 [2024-11-28 03:11:27,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:11:27,561 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 104 transitions. [2024-11-28 03:11:27,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 7 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (15), 8 states have call predecessors, (15), 7 states have call successors, (15) [2024-11-28 03:11:27,562 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 104 transitions. [2024-11-28 03:11:27,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-28 03:11:27,563 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:11:27,564 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 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] [2024-11-28 03:11:27,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:11:27,564 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:11:27,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:11:27,565 INFO L85 PathProgramCache]: Analyzing trace with hash -486231269, now seen corresponding path program 1 times [2024-11-28 03:11:27,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:11:27,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782957049] [2024-11-28 03:11:27,565 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:27,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:13:04,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:13:18,564 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-28 03:13:18,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:13:18,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782957049] [2024-11-28 03:13:18,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782957049] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:13:18,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:13:18,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-28 03:13:18,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582034826] [2024-11-28 03:13:18,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:13:18,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 03:13:18,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:13:18,567 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 03:13:18,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2024-11-28 03:13:18,568 INFO L87 Difference]: Start difference. First operand 93 states and 104 transitions. Second operand has 18 states, 16 states have (on average 3.25) internal successors, (52), 15 states have internal predecessors, (52), 6 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (15), 8 states have call predecessors, (15), 6 states have call successors, (15) [2024-11-28 03:13:21,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:13:21,211 INFO L93 Difference]: Finished difference Result 122 states and 135 transitions. [2024-11-28 03:13:21,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 03:13:21,212 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 3.25) internal successors, (52), 15 states have internal predecessors, (52), 6 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (15), 8 states have call predecessors, (15), 6 states have call successors, (15) Word has length 103 [2024-11-28 03:13:21,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:13:21,214 INFO L225 Difference]: With dead ends: 122 [2024-11-28 03:13:21,214 INFO L226 Difference]: Without dead ends: 94 [2024-11-28 03:13:21,215 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2024-11-28 03:13:21,216 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 11 mSDsluCounter, 1375 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1465 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:13:21,216 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 1465 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-28 03:13:21,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-28 03:13:21,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2024-11-28 03:13:21,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 62 states have (on average 1.064516129032258) internal successors, (66), 62 states have internal predecessors, (66), 20 states have call successors, (20), 12 states have call predecessors, (20), 11 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-28 03:13:21,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 105 transitions. [2024-11-28 03:13:21,227 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 105 transitions. Word has length 103 [2024-11-28 03:13:21,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:13:21,228 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 105 transitions. [2024-11-28 03:13:21,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 3.25) internal successors, (52), 15 states have internal predecessors, (52), 6 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (15), 8 states have call predecessors, (15), 6 states have call successors, (15) [2024-11-28 03:13:21,228 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 105 transitions. [2024-11-28 03:13:21,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-28 03:13:21,230 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:13:21,230 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 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] [2024-11-28 03:13:21,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:13:21,231 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:13:21,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:13:21,232 INFO L85 PathProgramCache]: Analyzing trace with hash -824952811, now seen corresponding path program 1 times [2024-11-28 03:13:21,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:13:21,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107390472] [2024-11-28 03:13:21,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:13:21,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:15:12,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:56,988 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-28 03:15:56,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:15:56,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107390472] [2024-11-28 03:15:56,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107390472] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:15:56,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553120208] [2024-11-28 03:15:56,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:56,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:15:56,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76870f63-04e4-4bf9-9b41-241434d1c722/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:15:56,993 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76870f63-04e4-4bf9-9b41-241434d1c722/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:15:56,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76870f63-04e4-4bf9-9b41-241434d1c722/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process