./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518d7b5f-44d1-43f8-9980-758c7cba23f1/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518d7b5f-44d1-43f8-9980-758c7cba23f1/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518d7b5f-44d1-43f8-9980-758c7cba23f1/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518d7b5f-44d1-43f8-9980-758c7cba23f1/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518d7b5f-44d1-43f8-9980-758c7cba23f1/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518d7b5f-44d1-43f8-9980-758c7cba23f1/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 7d9514ee1b6f3a0027f117bcf81d6b26d525fe99251459ecef3c46cad248dd1f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:38:22,601 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:38:22,723 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518d7b5f-44d1-43f8-9980-758c7cba23f1/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-24 00:38:22,728 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:38:22,728 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:38:22,756 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:38:22,756 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:38:22,757 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:38:22,757 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:38:22,757 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:38:22,758 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:38:22,758 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:38:22,758 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:38:22,758 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:38:22,759 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:38:22,759 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:38:22,759 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:38:22,759 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:38:22,759 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:38:22,760 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:38:22,760 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:38:22,760 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:38:22,760 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:38:22,760 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:38:22,760 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:38:22,761 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:38:22,761 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:38:22,761 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:38:22,761 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:38:22,761 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:38:22,762 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:38:22,762 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:38:22,762 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:38:22,762 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:38:22,762 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:38:22,763 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:38:22,763 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:38:22,763 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:38:22,763 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:38:22,763 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:38:22,763 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:38:22,763 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:38:22,764 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:38:22,764 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:38:22,764 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:38:22,764 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_518d7b5f-44d1-43f8-9980-758c7cba23f1/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7d9514ee1b6f3a0027f117bcf81d6b26d525fe99251459ecef3c46cad248dd1f [2024-11-24 00:38:23,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:38:23,144 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:38:23,149 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:38:23,150 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:38:23,151 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:38:23,155 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518d7b5f-44d1-43f8-9980-758c7cba23f1/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i [2024-11-24 00:38:26,398 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518d7b5f-44d1-43f8-9980-758c7cba23f1/bin/uautomizer-verify-LYvppIcaGC/data/4d22a54ee/acda59f6c1c84144a75d927baea8fe4d/FLAG96162e58f [2024-11-24 00:38:27,033 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:38:27,037 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518d7b5f-44d1-43f8-9980-758c7cba23f1/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i [2024-11-24 00:38:27,090 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518d7b5f-44d1-43f8-9980-758c7cba23f1/bin/uautomizer-verify-LYvppIcaGC/data/4d22a54ee/acda59f6c1c84144a75d927baea8fe4d/FLAG96162e58f [2024-11-24 00:38:27,492 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518d7b5f-44d1-43f8-9980-758c7cba23f1/bin/uautomizer-verify-LYvppIcaGC/data/4d22a54ee/acda59f6c1c84144a75d927baea8fe4d [2024-11-24 00:38:27,495 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:38:27,497 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:38:27,500 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:38:27,501 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:38:27,507 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:38:27,508 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:38:27" (1/1) ... [2024-11-24 00:38:27,512 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f43a72a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:38:27, skipping insertion in model container [2024-11-24 00:38:27,512 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:38:27" (1/1) ... [2024-11-24 00:38:27,666 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:38:28,038 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_518d7b5f-44d1-43f8-9980-758c7cba23f1/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i[4510,4523] [2024-11-24 00:38:28,050 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_518d7b5f-44d1-43f8-9980-758c7cba23f1/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i[4570,4583] [2024-11-24 00:38:29,272 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:38:29,273 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:38:29,274 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:38:29,275 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:38:29,277 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:38:29,297 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:38:29,298 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:38:29,302 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:38:29,303 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:38:29,305 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:38:29,307 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:38:29,308 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:38:29,309 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:38:30,314 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:38:30,325 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:38:30,465 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:38:30,466 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:38:30,599 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:38:30,653 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:38:30,669 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_518d7b5f-44d1-43f8-9980-758c7cba23f1/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i[4510,4523] [2024-11-24 00:38:30,670 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_518d7b5f-44d1-43f8-9980-758c7cba23f1/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i[4570,4583] [2024-11-24 00:38:30,717 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:38:30,718 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:38:30,718 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:38:30,718 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:38:30,719 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:38:30,726 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:38:30,727 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:38:30,728 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:38:30,729 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:38:30,730 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:38:30,731 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:38:30,732 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:38:30,732 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:38:30,909 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:38:30,915 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:38:30,989 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8553] [2024-11-24 00:38:30,991 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:38:30,992 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:38:31,009 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [9039-9050] [2024-11-24 00:38:31,058 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:38:31,380 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:38:31,381 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:38:31 WrapperNode [2024-11-24 00:38:31,382 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:38:31,384 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:38:31,384 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:38:31,384 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:38:31,396 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:38:31" (1/1) ... [2024-11-24 00:38:31,509 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:38:31" (1/1) ... [2024-11-24 00:38:31,630 INFO L138 Inliner]: procedures = 684, calls = 3059, calls flagged for inlining = 70, calls inlined = 10, statements flattened = 980 [2024-11-24 00:38:31,630 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:38:31,631 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:38:31,631 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:38:31,632 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:38:31,653 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:38:31" (1/1) ... [2024-11-24 00:38:31,654 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:38:31" (1/1) ... [2024-11-24 00:38:31,677 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:38:31" (1/1) ... [2024-11-24 00:38:31,855 INFO L175 MemorySlicer]: Split 591 memory accesses to 7 slices as follows [2, 6, 257, 238, 51, 16, 21]. 43 percent of accesses are in the largest equivalence class. The 37 initializations are split as follows [2, 0, 0, 6, 8, 16, 5]. The 498 writes are split as follows [0, 2, 257, 232, 3, 0, 4]. [2024-11-24 00:38:31,855 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:38:31" (1/1) ... [2024-11-24 00:38:31,855 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:38:31" (1/1) ... [2024-11-24 00:38:31,947 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:38:31" (1/1) ... [2024-11-24 00:38:31,950 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:38:31" (1/1) ... [2024-11-24 00:38:31,963 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:38:31" (1/1) ... [2024-11-24 00:38:31,988 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:38:31" (1/1) ... [2024-11-24 00:38:31,997 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:38:31" (1/1) ... [2024-11-24 00:38:32,035 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:38:32,036 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:38:32,036 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:38:32,036 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:38:32,040 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:38:31" (1/1) ... [2024-11-24 00:38:32,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:38:32,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518d7b5f-44d1-43f8-9980-758c7cba23f1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:38:32,096 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518d7b5f-44d1-43f8-9980-758c7cba23f1/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:38:32,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518d7b5f-44d1-43f8-9980-758c7cba23f1/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:38:32,164 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2024-11-24 00:38:32,166 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2024-11-24 00:38:32,166 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2024-11-24 00:38:32,166 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2024-11-24 00:38:32,167 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2024-11-24 00:38:32,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2024-11-24 00:38:32,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-24 00:38:32,168 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-24 00:38:32,168 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-24 00:38:32,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#0 [2024-11-24 00:38:32,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#1 [2024-11-24 00:38:32,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#2 [2024-11-24 00:38:32,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#3 [2024-11-24 00:38:32,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#4 [2024-11-24 00:38:32,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#5 [2024-11-24 00:38:32,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#6 [2024-11-24 00:38:32,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#0 [2024-11-24 00:38:32,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#1 [2024-11-24 00:38:32,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#2 [2024-11-24 00:38:32,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#3 [2024-11-24 00:38:32,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#4 [2024-11-24 00:38:32,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#5 [2024-11-24 00:38:32,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#6 [2024-11-24 00:38:32,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-24 00:38:32,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-24 00:38:32,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-24 00:38:32,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-24 00:38:32,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-24 00:38:32,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-24 00:38:32,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-11-24 00:38:32,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-24 00:38:32,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-24 00:38:32,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-24 00:38:32,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-24 00:38:32,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-24 00:38:32,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-24 00:38:32,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-24 00:38:32,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#0 [2024-11-24 00:38:32,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#1 [2024-11-24 00:38:32,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#2 [2024-11-24 00:38:32,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#3 [2024-11-24 00:38:32,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#4 [2024-11-24 00:38:32,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#5 [2024-11-24 00:38:32,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#6 [2024-11-24 00:38:32,175 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#0 [2024-11-24 00:38:32,175 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#1 [2024-11-24 00:38:32,175 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#2 [2024-11-24 00:38:32,175 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#3 [2024-11-24 00:38:32,175 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#4 [2024-11-24 00:38:32,175 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#5 [2024-11-24 00:38:32,175 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#6 [2024-11-24 00:38:32,176 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-24 00:38:32,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-24 00:38:32,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-24 00:38:32,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:38:32,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-24 00:38:32,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-24 00:38:32,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-24 00:38:32,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-24 00:38:32,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-24 00:38:32,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-24 00:38:32,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-24 00:38:32,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:38:32,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:38:32,176 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-24 00:38:32,176 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-24 00:38:32,176 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2024-11-24 00:38:32,176 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2024-11-24 00:38:32,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#0 [2024-11-24 00:38:32,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#1 [2024-11-24 00:38:32,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#2 [2024-11-24 00:38:32,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#3 [2024-11-24 00:38:32,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#4 [2024-11-24 00:38:32,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#5 [2024-11-24 00:38:32,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#6 [2024-11-24 00:38:32,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-24 00:38:32,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-24 00:38:32,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-24 00:38:32,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-24 00:38:32,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-24 00:38:32,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-24 00:38:32,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-11-24 00:38:32,177 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_bytes [2024-11-24 00:38:32,177 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_bytes [2024-11-24 00:38:32,177 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 00:38:32,177 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 00:38:32,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-24 00:38:32,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-24 00:38:32,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-24 00:38:32,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-24 00:38:32,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-24 00:38:32,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-24 00:38:32,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-24 00:38:32,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-24 00:38:32,177 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2024-11-24 00:38:32,177 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2024-11-24 00:38:32,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-24 00:38:32,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-24 00:38:32,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-24 00:38:32,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-24 00:38:32,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-24 00:38:32,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-24 00:38:32,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-24 00:38:32,178 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-24 00:38:32,178 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-24 00:38:32,178 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-24 00:38:32,178 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-24 00:38:32,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-24 00:38:32,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-24 00:38:32,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-24 00:38:32,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-24 00:38:32,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-24 00:38:32,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-24 00:38:32,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-24 00:38:32,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#0 [2024-11-24 00:38:32,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#1 [2024-11-24 00:38:32,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#2 [2024-11-24 00:38:32,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#3 [2024-11-24 00:38:32,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#4 [2024-11-24 00:38:32,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#5 [2024-11-24 00:38:32,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#6 [2024-11-24 00:38:32,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:38:32,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 00:38:32,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-24 00:38:32,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-24 00:38:32,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-24 00:38:32,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-24 00:38:32,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-24 00:38:32,726 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:38:32,729 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:38:43,332 INFO L? ?]: Removed 251 outVars from TransFormulas that were not future-live. [2024-11-24 00:38:43,333 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:38:43,347 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:38:43,347 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-24 00:38:43,347 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:38:43 BoogieIcfgContainer [2024-11-24 00:38:43,348 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:38:43,350 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:38:43,350 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:38:43,355 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:38:43,355 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:38:27" (1/3) ... [2024-11-24 00:38:43,356 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38721f05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:38:43, skipping insertion in model container [2024-11-24 00:38:43,356 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:38:31" (2/3) ... [2024-11-24 00:38:43,357 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38721f05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:38:43, skipping insertion in model container [2024-11-24 00:38:43,357 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:38:43" (3/3) ... [2024-11-24 00:38:43,358 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_from_whole_string_harness.i [2024-11-24 00:38:43,376 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:38:43,379 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_byte_buf_write_from_whole_string_harness.i that has 20 procedures, 211 locations, 1 initial locations, 14 loop locations, and 1 error locations. [2024-11-24 00:38:43,455 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:38:43,473 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;@3ecf0a99, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:38:43,473 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 00:38:43,478 INFO L276 IsEmpty]: Start isEmpty. Operand has 181 states, 118 states have (on average 1.2627118644067796) internal successors, (149), 119 states have internal predecessors, (149), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-24 00:38:43,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-24 00:38:43,488 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:38:43,489 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] [2024-11-24 00:38:43,489 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:38:43,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:38:43,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1996143641, now seen corresponding path program 1 times [2024-11-24 00:38:43,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:38:43,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482353619] [2024-11-24 00:38:43,507 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:38:43,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:40:25,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:40:27,350 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-24 00:40:27,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:40:27,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482353619] [2024-11-24 00:40:27,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482353619] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:40:27,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135389131] [2024-11-24 00:40:27,353 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:40:27,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:40:27,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518d7b5f-44d1-43f8-9980-758c7cba23f1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:40:27,357 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518d7b5f-44d1-43f8-9980-758c7cba23f1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:40:27,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518d7b5f-44d1-43f8-9980-758c7cba23f1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:42:04,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:42:05,017 INFO L256 TraceCheckSpWp]: Trace formula consists of 7708 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-24 00:42:05,030 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:42:05,052 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-24 00:42:05,056 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:42:05,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135389131] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:42:05,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:42:05,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-24 00:42:05,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364989063] [2024-11-24 00:42:05,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:42:05,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 00:42:05,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:42:05,082 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 00:42:05,083 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:42:05,086 INFO L87 Difference]: Start difference. First operand has 181 states, 118 states have (on average 1.2627118644067796) internal successors, (149), 119 states have internal predecessors, (149), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 00:42:05,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:42:05,156 INFO L93 Difference]: Finished difference Result 353 states and 507 transitions. [2024-11-24 00:42:05,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 00:42:05,158 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 62 [2024-11-24 00:42:05,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:42:05,171 INFO L225 Difference]: With dead ends: 353 [2024-11-24 00:42:05,171 INFO L226 Difference]: Without dead ends: 176 [2024-11-24 00:42:05,180 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:42:05,183 INFO L435 NwaCegarLoop]: 243 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, 243 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:42:05,186 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:42:05,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-11-24 00:42:05,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2024-11-24 00:42:05,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 114 states have (on average 1.2543859649122806) internal successors, (143), 115 states have internal predecessors, (143), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-11-24 00:42:05,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 238 transitions. [2024-11-24 00:42:05,262 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 238 transitions. Word has length 62 [2024-11-24 00:42:05,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:42:05,264 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 238 transitions. [2024-11-24 00:42:05,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 00:42:05,265 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 238 transitions. [2024-11-24 00:42:05,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-24 00:42:05,269 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:42:05,269 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] [2024-11-24 00:42:05,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518d7b5f-44d1-43f8-9980-758c7cba23f1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-24 00:42:05,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518d7b5f-44d1-43f8-9980-758c7cba23f1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-24 00:42:05,471 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:42:05,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:42:05,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1690815581, now seen corresponding path program 1 times [2024-11-24 00:42:05,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:42:05,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918394000] [2024-11-24 00:42:05,472 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:05,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:43:42,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:43:45,247 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-24 00:43:45,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:43:45,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918394000] [2024-11-24 00:43:45,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918394000] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:43:45,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:43:45,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:43:45,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350729172] [2024-11-24 00:43:45,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:43:45,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:43:45,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:43:45,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:43:45,252 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:43:45,252 INFO L87 Difference]: Start difference. First operand 176 states and 238 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-24 00:43:45,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:43:45,852 INFO L93 Difference]: Finished difference Result 313 states and 431 transitions. [2024-11-24 00:43:45,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:43:45,856 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 62 [2024-11-24 00:43:45,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:43:45,861 INFO L225 Difference]: With dead ends: 313 [2024-11-24 00:43:45,861 INFO L226 Difference]: Without dead ends: 179 [2024-11-24 00:43:45,862 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:43:45,863 INFO L435 NwaCegarLoop]: 224 mSDtfsCounter, 50 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:43:45,863 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 805 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 00:43:45,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-11-24 00:43:45,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2024-11-24 00:43:45,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 116 states have (on average 1.25) internal successors, (145), 118 states have internal predecessors, (145), 48 states have call successors, (48), 13 states have call predecessors, (48), 14 states have return successors, (51), 47 states have call predecessors, (51), 47 states have call successors, (51) [2024-11-24 00:43:45,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 244 transitions. [2024-11-24 00:43:45,898 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 244 transitions. Word has length 62 [2024-11-24 00:43:45,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:43:45,899 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 244 transitions. [2024-11-24 00:43:45,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-24 00:43:45,899 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 244 transitions. [2024-11-24 00:43:45,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-24 00:43:45,905 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:43:45,905 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, 1, 1, 1, 1, 1] [2024-11-24 00:43:45,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 00:43:45,905 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:43:45,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:43:45,906 INFO L85 PathProgramCache]: Analyzing trace with hash -960899666, now seen corresponding path program 1 times [2024-11-24 00:43:45,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:43:45,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548790340] [2024-11-24 00:43:45,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:43:45,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:45:26,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:45:32,561 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-24 00:45:32,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:45:32,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548790340] [2024-11-24 00:45:32,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548790340] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:45:32,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:45:32,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:45:32,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346028615] [2024-11-24 00:45:32,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:45:32,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:45:32,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:45:32,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:45:32,564 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:45:32,564 INFO L87 Difference]: Start difference. First operand 179 states and 244 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 4 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-24 00:45:33,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:45:33,393 INFO L93 Difference]: Finished difference Result 185 states and 249 transitions. [2024-11-24 00:45:33,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:45:33,394 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 4 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 68 [2024-11-24 00:45:33,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:45:33,396 INFO L225 Difference]: With dead ends: 185 [2024-11-24 00:45:33,396 INFO L226 Difference]: Without dead ends: 183 [2024-11-24 00:45:33,396 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:45:33,397 INFO L435 NwaCegarLoop]: 222 mSDtfsCounter, 85 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:45:33,397 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 1026 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 00:45:33,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-24 00:45:33,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2024-11-24 00:45:33,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 119 states have (on average 1.2436974789915967) internal successors, (148), 121 states have internal predecessors, (148), 48 states have call successors, (48), 14 states have call predecessors, (48), 15 states have return successors, (51), 47 states have call predecessors, (51), 47 states have call successors, (51) [2024-11-24 00:45:33,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 247 transitions. [2024-11-24 00:45:33,422 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 247 transitions. Word has length 68 [2024-11-24 00:45:33,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:45:33,425 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 247 transitions. [2024-11-24 00:45:33,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 4 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-24 00:45:33,426 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 247 transitions. [2024-11-24 00:45:33,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-24 00:45:33,428 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:45:33,428 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2024-11-24 00:45:33,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 00:45:33,428 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:45:33,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:45:33,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1735774001, now seen corresponding path program 1 times [2024-11-24 00:45:33,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:45:33,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045105314] [2024-11-24 00:45:33,429 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:45:33,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:47:14,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:47:23,113 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-24 00:47:23,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:47:23,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045105314] [2024-11-24 00:47:23,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045105314] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:47:23,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:47:23,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:47:23,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567225631] [2024-11-24 00:47:23,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:47:23,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:47:23,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:47:23,114 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:47:23,114 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:47:23,115 INFO L87 Difference]: Start difference. First operand 183 states and 247 transitions. Second operand has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-24 00:47:24,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:47:24,498 INFO L93 Difference]: Finished difference Result 214 states and 292 transitions. [2024-11-24 00:47:24,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:47:24,498 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 74 [2024-11-24 00:47:24,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:47:24,501 INFO L225 Difference]: With dead ends: 214 [2024-11-24 00:47:24,501 INFO L226 Difference]: Without dead ends: 212 [2024-11-24 00:47:24,501 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:47:24,502 INFO L435 NwaCegarLoop]: 229 mSDtfsCounter, 25 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:47:24,503 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 1250 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-24 00:47:24,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-11-24 00:47:24,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 193. [2024-11-24 00:47:24,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 126 states have (on average 1.246031746031746) internal successors, (157), 129 states have internal predecessors, (157), 50 states have call successors, (50), 15 states have call predecessors, (50), 16 states have return successors, (53), 48 states have call predecessors, (53), 49 states have call successors, (53) [2024-11-24 00:47:24,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 260 transitions. [2024-11-24 00:47:24,529 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 260 transitions. Word has length 74 [2024-11-24 00:47:24,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:47:24,529 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 260 transitions. [2024-11-24 00:47:24,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-24 00:47:24,529 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 260 transitions. [2024-11-24 00:47:24,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-24 00:47:24,537 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:47:24,538 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:47:24,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 00:47:24,538 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:47:24,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:47:24,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1938056932, now seen corresponding path program 1 times [2024-11-24 00:47:24,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:47:24,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589269088] [2024-11-24 00:47:24,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:47:24,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:48:51,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:48:53,060 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-24 00:48:53,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:48:53,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589269088] [2024-11-24 00:48:53,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589269088] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:48:53,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:48:53,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:48:53,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79015141] [2024-11-24 00:48:53,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:48:53,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:48:53,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:48:53,062 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:48:53,062 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:48:53,062 INFO L87 Difference]: Start difference. First operand 193 states and 260 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-24 00:48:53,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:48:53,193 INFO L93 Difference]: Finished difference Result 294 states and 399 transitions. [2024-11-24 00:48:53,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:48:53,194 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 75 [2024-11-24 00:48:53,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:48:53,197 INFO L225 Difference]: With dead ends: 294 [2024-11-24 00:48:53,197 INFO L226 Difference]: Without dead ends: 229 [2024-11-24 00:48:53,198 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:48:53,198 INFO L435 NwaCegarLoop]: 235 mSDtfsCounter, 12 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 696 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 [2024-11-24 00:48:53,199 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 696 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:48:53,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-11-24 00:48:53,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2024-11-24 00:48:53,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 150 states have (on average 1.24) internal successors, (186), 153 states have internal predecessors, (186), 62 states have call successors, (62), 15 states have call predecessors, (62), 16 states have return successors, (66), 60 states have call predecessors, (66), 61 states have call successors, (66) [2024-11-24 00:48:53,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 314 transitions. [2024-11-24 00:48:53,231 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 314 transitions. Word has length 75 [2024-11-24 00:48:53,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:48:53,231 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 314 transitions. [2024-11-24 00:48:53,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-24 00:48:53,231 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 314 transitions. [2024-11-24 00:48:53,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-24 00:48:53,233 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:48:53,233 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2024-11-24 00:48:53,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 00:48:53,233 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:48:53,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:48:53,234 INFO L85 PathProgramCache]: Analyzing trace with hash 2057222190, now seen corresponding path program 1 times [2024-11-24 00:48:53,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:48:53,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373290515] [2024-11-24 00:48:53,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:48:53,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:50:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:50:30,999 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-24 00:50:31,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:50:31,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373290515] [2024-11-24 00:50:31,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373290515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:50:31,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:50:31,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 00:50:31,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684032651] [2024-11-24 00:50:31,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:50:31,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 00:50:31,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:50:31,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 00:50:31,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:50:31,002 INFO L87 Difference]: Start difference. First operand 229 states and 314 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 4 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-24 00:50:34,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:50:34,246 INFO L93 Difference]: Finished difference Result 450 states and 639 transitions. [2024-11-24 00:50:34,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 00:50:34,247 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 4 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 80 [2024-11-24 00:50:34,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:50:34,249 INFO L225 Difference]: With dead ends: 450 [2024-11-24 00:50:34,250 INFO L226 Difference]: Without dead ends: 273 [2024-11-24 00:50:34,251 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-24 00:50:34,251 INFO L435 NwaCegarLoop]: 213 mSDtfsCounter, 68 mSDsluCounter, 1239 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 1452 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-24 00:50:34,252 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 1452 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-24 00:50:34,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2024-11-24 00:50:34,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 266. [2024-11-24 00:50:34,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 172 states have (on average 1.2383720930232558) internal successors, (213), 176 states have internal predecessors, (213), 76 states have call successors, (76), 15 states have call predecessors, (76), 17 states have return successors, (86), 74 states have call predecessors, (86), 75 states have call successors, (86) [2024-11-24 00:50:34,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 375 transitions. [2024-11-24 00:50:34,280 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 375 transitions. Word has length 80 [2024-11-24 00:50:34,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:50:34,280 INFO L471 AbstractCegarLoop]: Abstraction has 266 states and 375 transitions. [2024-11-24 00:50:34,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 4 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-24 00:50:34,281 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 375 transitions. [2024-11-24 00:50:34,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-24 00:50:34,282 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:50:34,282 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:50:34,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 00:50:34,283 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:50:34,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:50:34,283 INFO L85 PathProgramCache]: Analyzing trace with hash -759716362, now seen corresponding path program 1 times [2024-11-24 00:50:34,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:50:34,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632214232] [2024-11-24 00:50:34,284 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:50:34,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:52:04,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:52:10,310 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-24 00:52:10,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:52:10,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632214232] [2024-11-24 00:52:10,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632214232] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:52:10,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820947403] [2024-11-24 00:52:10,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:52:10,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:52:10,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518d7b5f-44d1-43f8-9980-758c7cba23f1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:52:10,313 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518d7b5f-44d1-43f8-9980-758c7cba23f1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:52:10,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518d7b5f-44d1-43f8-9980-758c7cba23f1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process