./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_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_f021df62-4bd5-450f-86e3-1565962918bc/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f021df62-4bd5-450f-86e3-1565962918bc/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_f021df62-4bd5-450f-86e3-1565962918bc/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f021df62-4bd5-450f-86e3-1565962918bc/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f021df62-4bd5-450f-86e3-1565962918bc/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_f021df62-4bd5-450f-86e3-1565962918bc/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 d8feb785efb60d35f9204dc33a12e80ea59efcec5de2b7c2ff320ef29197b0bd --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:02:25,533 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:02:25,639 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f021df62-4bd5-450f-86e3-1565962918bc/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-23 23:02:25,654 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:02:25,654 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:02:25,687 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:02:25,688 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:02:25,688 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:02:25,688 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:02:25,688 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:02:25,689 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:02:25,689 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:02:25,689 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:02:25,689 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:02:25,690 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:02:25,690 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:02:25,690 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:02:25,690 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:02:25,690 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:02:25,691 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:02:25,691 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:02:25,691 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:02:25,691 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:02:25,691 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:02:25,691 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:02:25,691 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:02:25,692 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:02:25,692 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:02:25,692 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:02:25,692 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:02:25,692 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:02:25,692 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:02:25,693 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:02:25,693 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:02:25,693 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:02:25,693 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:02:25,693 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:02:25,693 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:02:25,693 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:02:25,694 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:02:25,694 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:02:25,694 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:02:25,694 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:02:25,694 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:02:25,694 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:02:25,694 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_f021df62-4bd5-450f-86e3-1565962918bc/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 -> d8feb785efb60d35f9204dc33a12e80ea59efcec5de2b7c2ff320ef29197b0bd [2024-11-23 23:02:26,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:02:26,108 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:02:26,113 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:02:26,115 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:02:26,115 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:02:26,118 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f021df62-4bd5-450f-86e3-1565962918bc/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_harness.i [2024-11-23 23:02:29,425 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f021df62-4bd5-450f-86e3-1565962918bc/bin/uautomizer-verify-LYvppIcaGC/data/33747e0fb/4044fb799a4c4c7e9957b4194b890724/FLAGa6417cd13 [2024-11-23 23:02:30,193 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:02:30,193 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f021df62-4bd5-450f-86e3-1565962918bc/sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_harness.i [2024-11-23 23:02:30,259 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f021df62-4bd5-450f-86e3-1565962918bc/bin/uautomizer-verify-LYvppIcaGC/data/33747e0fb/4044fb799a4c4c7e9957b4194b890724/FLAGa6417cd13 [2024-11-23 23:02:30,519 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f021df62-4bd5-450f-86e3-1565962918bc/bin/uautomizer-verify-LYvppIcaGC/data/33747e0fb/4044fb799a4c4c7e9957b4194b890724 [2024-11-23 23:02:30,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:02:30,522 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:02:30,524 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:02:30,524 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:02:30,529 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:02:30,530 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:02:30" (1/1) ... [2024-11-23 23:02:30,531 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 23.11 11:02:30, skipping insertion in model container [2024-11-23 23:02:30,531 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:02:30" (1/1) ... [2024-11-23 23:02:30,656 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:02:30,963 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_f021df62-4bd5-450f-86e3-1565962918bc/sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_harness.i[4499,4512] [2024-11-23 23:02:30,973 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_f021df62-4bd5-450f-86e3-1565962918bc/sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_harness.i[4559,4572] [2024-11-23 23:02:32,237 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:02:32,238 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:02:32,239 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:02:32,240 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:02:32,241 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:02:32,260 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:02:32,261 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:02:32,264 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:02:32,265 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:02:33,325 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:02:33,326 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:02:33,455 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:02:33,544 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:02:33,567 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_f021df62-4bd5-450f-86e3-1565962918bc/sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_harness.i[4499,4512] [2024-11-23 23:02:33,567 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_f021df62-4bd5-450f-86e3-1565962918bc/sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_harness.i[4559,4572] [2024-11-23 23:02:33,653 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:02:33,655 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:02:33,655 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:02:33,656 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:02:33,658 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:02:33,674 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:02:33,675 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:02:33,676 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:02:33,677 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:02:33,923 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8269] [2024-11-23 23:02:33,925 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:02:33,927 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:02:33,946 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8755-8766] [2024-11-23 23:02:33,985 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:02:34,257 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:02:34,258 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:02:34 WrapperNode [2024-11-23 23:02:34,258 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:02:34,259 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:02:34,259 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:02:34,259 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:02:34,286 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:02:34" (1/1) ... [2024-11-23 23:02:34,403 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:02:34" (1/1) ... [2024-11-23 23:02:34,511 INFO L138 Inliner]: procedures = 679, calls = 2728, calls flagged for inlining = 62, calls inlined = 9, statements flattened = 815 [2024-11-23 23:02:34,512 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:02:34,515 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:02:34,515 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:02:34,516 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:02:34,528 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:02:34" (1/1) ... [2024-11-23 23:02:34,528 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:02:34" (1/1) ... [2024-11-23 23:02:34,536 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:02:34" (1/1) ... [2024-11-23 23:02:34,653 INFO L175 MemorySlicer]: Split 518 memory accesses to 6 slices as follows [2, 5, 257, 238, 14, 2]. 50 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 0, 6, 0, 0]. The 494 writes are split as follows [0, 0, 257, 232, 4, 1]. [2024-11-23 23:02:34,657 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:02:34" (1/1) ... [2024-11-23 23:02:34,657 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:02:34" (1/1) ... [2024-11-23 23:02:34,745 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:02:34" (1/1) ... [2024-11-23 23:02:34,756 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:02:34" (1/1) ... [2024-11-23 23:02:34,771 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:02:34" (1/1) ... [2024-11-23 23:02:34,796 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:02:34" (1/1) ... [2024-11-23 23:02:34,816 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:02:34" (1/1) ... [2024-11-23 23:02:34,839 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:02:34,843 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:02:34,844 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:02:34,844 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:02:34,845 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:02:34" (1/1) ... [2024-11-23 23:02:34,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:02:34,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f021df62-4bd5-450f-86e3-1565962918bc/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:02:34,934 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f021df62-4bd5-450f-86e3-1565962918bc/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:02:34,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f021df62-4bd5-450f-86e3-1565962918bc/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:02:34,998 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2024-11-23 23:02:34,998 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2024-11-23 23:02:34,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-23 23:02:34,998 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-23 23:02:34,999 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-23 23:02:34,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#0 [2024-11-23 23:02:34,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#1 [2024-11-23 23:02:34,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#2 [2024-11-23 23:02:34,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#3 [2024-11-23 23:02:34,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#4 [2024-11-23 23:02:34,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#5 [2024-11-23 23:02:34,999 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2024-11-23 23:02:34,999 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2024-11-23 23:02:34,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#0 [2024-11-23 23:02:34,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#1 [2024-11-23 23:02:34,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#2 [2024-11-23 23:02:35,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#3 [2024-11-23 23:02:35,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#4 [2024-11-23 23:02:35,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#5 [2024-11-23 23:02:35,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-23 23:02:35,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-23 23:02:35,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-23 23:02:35,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-23 23:02:35,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-23 23:02:35,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-23 23:02:35,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 23:02:35,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 23:02:35,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-23 23:02:35,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-23 23:02:35,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-23 23:02:35,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-23 23:02:35,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#0 [2024-11-23 23:02:35,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#1 [2024-11-23 23:02:35,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#2 [2024-11-23 23:02:35,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#3 [2024-11-23 23:02:35,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#4 [2024-11-23 23:02:35,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#5 [2024-11-23 23:02:35,001 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#0 [2024-11-23 23:02:35,001 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#1 [2024-11-23 23:02:35,001 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#2 [2024-11-23 23:02:35,001 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#3 [2024-11-23 23:02:35,001 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#4 [2024-11-23 23:02:35,002 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#5 [2024-11-23 23:02:35,002 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-11-23 23:02:35,002 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-11-23 23:02:35,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-23 23:02:35,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-23 23:02:35,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-23 23:02:35,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:02:35,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-23 23:02:35,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-23 23:02:35,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-23 23:02:35,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-23 23:02:35,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-23 23:02:35,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-23 23:02:35,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:02:35,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:02:35,003 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-23 23:02:35,003 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-23 23:02:35,003 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#0 [2024-11-23 23:02:35,003 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#1 [2024-11-23 23:02:35,003 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#2 [2024-11-23 23:02:35,003 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#3 [2024-11-23 23:02:35,004 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#4 [2024-11-23 23:02:35,004 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#5 [2024-11-23 23:02:35,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-23 23:02:35,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-23 23:02:35,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-23 23:02:35,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-23 23:02:35,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-23 23:02:35,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-23 23:02:35,004 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2024-11-23 23:02:35,004 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2024-11-23 23:02:35,004 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 23:02:35,005 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 23:02:35,005 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2024-11-23 23:02:35,005 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2024-11-23 23:02:35,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-23 23:02:35,005 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2024-11-23 23:02:35,005 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2024-11-23 23:02:35,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-23 23:02:35,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-23 23:02:35,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-23 23:02:35,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-23 23:02:35,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-23 23:02:35,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-23 23:02:35,005 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_new_from_array [2024-11-23 23:02:35,005 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_new_from_array [2024-11-23 23:02:35,005 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-23 23:02:35,006 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-23 23:02:35,006 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2024-11-23 23:02:35,006 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2024-11-23 23:02:35,006 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-23 23:02:35,006 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-23 23:02:35,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 23:02:35,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 23:02:35,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-23 23:02:35,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-23 23:02:35,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-23 23:02:35,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-23 23:02:35,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#0 [2024-11-23 23:02:35,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#1 [2024-11-23 23:02:35,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#2 [2024-11-23 23:02:35,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#3 [2024-11-23 23:02:35,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#4 [2024-11-23 23:02:35,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#5 [2024-11-23 23:02:35,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:02:35,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 23:02:35,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 23:02:35,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-23 23:02:35,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-23 23:02:35,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-23 23:02:35,497 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:02:35,499 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:02:35,692 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-23 23:02:35,785 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume false; [2024-11-23 23:02:35,785 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !false; [2024-11-23 23:02:45,791 INFO L? ?]: Removed 174 outVars from TransFormulas that were not future-live. [2024-11-23 23:02:45,792 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:02:45,850 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:02:45,853 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-23 23:02:45,853 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:02:45 BoogieIcfgContainer [2024-11-23 23:02:45,854 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:02:45,856 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:02:45,856 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:02:45,864 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:02:45,864 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:02:30" (1/3) ... [2024-11-23 23:02:45,866 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c5382bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:02:45, skipping insertion in model container [2024-11-23 23:02:45,867 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:02:34" (2/3) ... [2024-11-23 23:02:45,867 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c5382bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:02:45, skipping insertion in model container [2024-11-23 23:02:45,869 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:02:45" (3/3) ... [2024-11-23 23:02:45,870 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_string_new_from_c_str_harness.i [2024-11-23 23:02:45,890 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:02:45,893 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_string_new_from_c_str_harness.i that has 21 procedures, 162 locations, 1 initial locations, 13 loop locations, and 1 error locations. [2024-11-23 23:02:46,047 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:02:46,063 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;@64bf2f5f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:02:46,063 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 23:02:46,068 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 87 states have (on average 1.160919540229885) internal successors, (101), 87 states have internal predecessors, (101), 34 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-23 23:02:46,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-23 23:02:46,081 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:02:46,082 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:02:46,082 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:02:46,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:02:46,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1565145841, now seen corresponding path program 1 times [2024-11-23 23:02:46,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:02:46,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177283844] [2024-11-23 23:02:46,101 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:02:46,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:04:21,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:22,935 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-23 23:04:22,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:04:22,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177283844] [2024-11-23 23:04:22,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177283844] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:04:22,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50884758] [2024-11-23 23:04:22,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:22,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:04:22,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f021df62-4bd5-450f-86e3-1565962918bc/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:04:22,944 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f021df62-4bd5-450f-86e3-1565962918bc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:04:22,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f021df62-4bd5-450f-86e3-1565962918bc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:06:01,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:06:01,517 INFO L256 TraceCheckSpWp]: Trace formula consists of 7630 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 23:06:01,543 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:06:01,559 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-23 23:06:01,560 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:06:01,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50884758] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:06:01,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:06:01,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-23 23:06:01,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623401290] [2024-11-23 23:06:01,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:06:01,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 23:06:01,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:06:01,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 23:06:01,595 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:06:01,598 INFO L87 Difference]: Start difference. First operand has 137 states, 87 states have (on average 1.160919540229885) internal successors, (101), 87 states have internal predecessors, (101), 34 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 23:06:01,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:06:01,641 INFO L93 Difference]: Finished difference Result 268 states and 351 transitions. [2024-11-23 23:06:01,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 23:06:01,644 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 75 [2024-11-23 23:06:01,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:06:01,653 INFO L225 Difference]: With dead ends: 268 [2024-11-23 23:06:01,653 INFO L226 Difference]: Without dead ends: 131 [2024-11-23 23:06:01,658 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:06:01,663 INFO L435 NwaCegarLoop]: 165 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, 165 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:06:01,663 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:06:01,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-23 23:06:01,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2024-11-23 23:06:01,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 81 states have (on average 1.1481481481481481) internal successors, (93), 82 states have internal predecessors, (93), 34 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-11-23 23:06:01,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 160 transitions. [2024-11-23 23:06:01,717 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 160 transitions. Word has length 75 [2024-11-23 23:06:01,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:06:01,719 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 160 transitions. [2024-11-23 23:06:01,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 23:06:01,719 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 160 transitions. [2024-11-23 23:06:01,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-23 23:06:01,722 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:06:01,723 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:06:01,747 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f021df62-4bd5-450f-86e3-1565962918bc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 23:06:01,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f021df62-4bd5-450f-86e3-1565962918bc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-23 23:06:01,923 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:06:01,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:06:01,924 INFO L85 PathProgramCache]: Analyzing trace with hash 46619501, now seen corresponding path program 1 times [2024-11-23 23:06:01,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:06:01,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786837254] [2024-11-23 23:06:01,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:06:01,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:07:35,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:07:38,093 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-23 23:07:38,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:07:38,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786837254] [2024-11-23 23:07:38,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786837254] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:07:38,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:07:38,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:07:38,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366092976] [2024-11-23 23:07:38,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:07:38,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:07:38,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:07:38,098 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:07:38,098 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:07:38,098 INFO L87 Difference]: Start difference. First operand 131 states and 160 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 23:07:38,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:07:38,304 INFO L93 Difference]: Finished difference Result 180 states and 218 transitions. [2024-11-23 23:07:38,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:07:38,305 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) Word has length 75 [2024-11-23 23:07:38,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:07:38,308 INFO L225 Difference]: With dead ends: 180 [2024-11-23 23:07:38,311 INFO L226 Difference]: Without dead ends: 136 [2024-11-23 23:07:38,312 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:07:38,314 INFO L435 NwaCegarLoop]: 157 mSDtfsCounter, 0 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:07:38,314 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 624 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:07:38,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-23 23:07:38,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2024-11-23 23:07:38,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 85 states have (on average 1.1411764705882352) internal successors, (97), 86 states have internal predecessors, (97), 34 states have call successors, (34), 15 states have call predecessors, (34), 16 states have return successors, (34), 34 states have call predecessors, (34), 33 states have call successors, (34) [2024-11-23 23:07:38,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 165 transitions. [2024-11-23 23:07:38,342 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 165 transitions. Word has length 75 [2024-11-23 23:07:38,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:07:38,342 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 165 transitions. [2024-11-23 23:07:38,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-23 23:07:38,343 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 165 transitions. [2024-11-23 23:07:38,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-23 23:07:38,345 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:07:38,346 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:07:38,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 23:07:38,346 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:07:38,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:07:38,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1796237082, now seen corresponding path program 1 times [2024-11-23 23:07:38,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:07:38,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199692406] [2024-11-23 23:07:38,350 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:07:38,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:09:10,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:09:15,024 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-23 23:09:15,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:09:15,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199692406] [2024-11-23 23:09:15,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199692406] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:09:15,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:09:15,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:09:15,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795422231] [2024-11-23 23:09:15,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:09:15,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:09:15,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:09:15,027 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:09:15,027 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:09:15,027 INFO L87 Difference]: Start difference. First operand 136 states and 165 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:09:15,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:09:15,278 INFO L93 Difference]: Finished difference Result 180 states and 217 transitions. [2024-11-23 23:09:15,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:09:15,279 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 81 [2024-11-23 23:09:15,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:09:15,282 INFO L225 Difference]: With dead ends: 180 [2024-11-23 23:09:15,282 INFO L226 Difference]: Without dead ends: 141 [2024-11-23 23:09:15,283 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:09:15,284 INFO L435 NwaCegarLoop]: 157 mSDtfsCounter, 0 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:09:15,284 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 776 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:09:15,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-23 23:09:15,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2024-11-23 23:09:15,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 89 states have (on average 1.1348314606741574) internal successors, (101), 90 states have internal predecessors, (101), 34 states have call successors, (34), 15 states have call predecessors, (34), 17 states have return successors, (35), 35 states have call predecessors, (35), 33 states have call successors, (35) [2024-11-23 23:09:15,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 170 transitions. [2024-11-23 23:09:15,301 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 170 transitions. Word has length 81 [2024-11-23 23:09:15,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:09:15,301 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 170 transitions. [2024-11-23 23:09:15,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:09:15,302 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 170 transitions. [2024-11-23 23:09:15,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-23 23:09:15,304 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:09:15,304 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:09:15,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 23:09:15,305 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:09:15,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:09:15,306 INFO L85 PathProgramCache]: Analyzing trace with hash 2102665871, now seen corresponding path program 1 times [2024-11-23 23:09:15,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:09:15,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12306935] [2024-11-23 23:09:15,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:09:15,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:10:49,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:10:57,105 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-23 23:10:57,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:10:57,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12306935] [2024-11-23 23:10:57,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12306935] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:10:57,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:10:57,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 23:10:57,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772887007] [2024-11-23 23:10:57,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:10:57,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 23:10:57,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:10:57,107 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 23:10:57,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:10:57,107 INFO L87 Difference]: Start difference. First operand 141 states and 170 transitions. Second operand has 11 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 23:10:57,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:10:57,865 INFO L93 Difference]: Finished difference Result 147 states and 175 transitions. [2024-11-23 23:10:57,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 23:10:57,866 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 83 [2024-11-23 23:10:57,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:10:57,868 INFO L225 Difference]: With dead ends: 147 [2024-11-23 23:10:57,868 INFO L226 Difference]: Without dead ends: 132 [2024-11-23 23:10:57,869 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:10:57,870 INFO L435 NwaCegarLoop]: 151 mSDtfsCounter, 13 mSDsluCounter, 1319 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 1470 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:10:57,870 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 1470 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-23 23:10:57,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-23 23:10:57,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 127. [2024-11-23 23:10:57,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 78 states have (on average 1.1153846153846154) internal successors, (87), 79 states have internal predecessors, (87), 33 states have call successors, (33), 15 states have call predecessors, (33), 15 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-23 23:10:57,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 152 transitions. [2024-11-23 23:10:57,881 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 152 transitions. Word has length 83 [2024-11-23 23:10:57,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:10:57,881 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 152 transitions. [2024-11-23 23:10:57,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 23:10:57,882 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 152 transitions. [2024-11-23 23:10:57,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-23 23:10:57,884 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:10:57,884 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:10:57,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 23:10:57,885 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:10:57,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:10:57,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1369317466, now seen corresponding path program 1 times [2024-11-23 23:10:57,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:10:57,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746781738] [2024-11-23 23:10:57,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:10:57,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:12:23,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:12:26,437 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-11-23 23:12:26,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:12:26,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746781738] [2024-11-23 23:12:26,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746781738] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:12:26,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:12:26,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:12:26,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357303798] [2024-11-23 23:12:26,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:12:26,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:12:26,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:12:26,439 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:12:26,439 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:12:26,439 INFO L87 Difference]: Start difference. First operand 127 states and 152 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 23:12:26,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:12:26,600 INFO L93 Difference]: Finished difference Result 188 states and 224 transitions. [2024-11-23 23:12:26,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:12:26,601 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 124 [2024-11-23 23:12:26,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:12:26,603 INFO L225 Difference]: With dead ends: 188 [2024-11-23 23:12:26,603 INFO L226 Difference]: Without dead ends: 133 [2024-11-23 23:12:26,607 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:12:26,608 INFO L435 NwaCegarLoop]: 148 mSDtfsCounter, 2 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:12:26,608 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 735 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:12:26,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-23 23:12:26,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 132. [2024-11-23 23:12:26,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 82 states have (on average 1.1097560975609757) internal successors, (91), 83 states have internal predecessors, (91), 33 states have call successors, (33), 15 states have call predecessors, (33), 16 states have return successors, (33), 33 states have call predecessors, (33), 32 states have call successors, (33) [2024-11-23 23:12:26,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 157 transitions. [2024-11-23 23:12:26,632 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 157 transitions. Word has length 124 [2024-11-23 23:12:26,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:12:26,632 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 157 transitions. [2024-11-23 23:12:26,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 23:12:26,633 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 157 transitions. [2024-11-23 23:12:26,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-23 23:12:26,638 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:12:26,639 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:12:26,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 23:12:26,642 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:12:26,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:12:26,643 INFO L85 PathProgramCache]: Analyzing trace with hash 895563120, now seen corresponding path program 1 times [2024-11-23 23:12:26,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:12:26,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472637257] [2024-11-23 23:12:26,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:12:26,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:13:52,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:13:56,751 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-11-23 23:13:56,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:13:56,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472637257] [2024-11-23 23:13:56,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472637257] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:13:56,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:13:56,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 23:13:56,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104574725] [2024-11-23 23:13:56,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:13:56,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 23:13:56,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:13:56,754 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 23:13:56,754 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:13:56,754 INFO L87 Difference]: Start difference. First operand 132 states and 157 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 5 states have call predecessors, (21), 3 states have call successors, (21) [2024-11-23 23:13:57,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:13:57,034 INFO L93 Difference]: Finished difference Result 187 states and 222 transitions. [2024-11-23 23:13:57,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 23:13:57,035 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 5 states have call predecessors, (21), 3 states have call successors, (21) Word has length 130 [2024-11-23 23:13:57,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:13:57,037 INFO L225 Difference]: With dead ends: 187 [2024-11-23 23:13:57,037 INFO L226 Difference]: Without dead ends: 125 [2024-11-23 23:13:57,037 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:13:57,038 INFO L435 NwaCegarLoop]: 147 mSDtfsCounter, 0 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:13:57,038 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1168 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 23:13:57,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-11-23 23:13:57,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2024-11-23 23:13:57,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 77 states have (on average 1.0909090909090908) internal successors, (84), 78 states have internal predecessors, (84), 32 states have call successors, (32), 15 states have call predecessors, (32), 15 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-23 23:13:57,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 147 transitions. [2024-11-23 23:13:57,049 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 147 transitions. Word has length 130 [2024-11-23 23:13:57,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:13:57,050 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 147 transitions. [2024-11-23 23:13:57,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 5 states have call predecessors, (21), 3 states have call successors, (21) [2024-11-23 23:13:57,050 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 147 transitions. [2024-11-23 23:13:57,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-23 23:13:57,052 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:13:57,052 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:13:57,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 23:13:57,052 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:13:57,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:13:57,053 INFO L85 PathProgramCache]: Analyzing trace with hash -393298334, now seen corresponding path program 1 times [2024-11-23 23:13:57,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:13:57,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426214010] [2024-11-23 23:13:57,053 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:13:57,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:15:34,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:38,393 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-11-23 23:15:38,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:15:38,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426214010] [2024-11-23 23:15:38,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426214010] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:15:38,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:15:38,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-23 23:15:38,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805149728] [2024-11-23 23:15:38,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:15:38,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-23 23:15:38,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:15:38,395 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-23 23:15:38,396 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2024-11-23 23:15:38,396 INFO L87 Difference]: Start difference. First operand 125 states and 147 transitions. Second operand has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 12 states have internal predecessors, (62), 3 states have call successors, (23), 2 states have call predecessors, (23), 5 states have return successors, (21), 6 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-23 23:15:39,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:15:39,915 INFO L93 Difference]: Finished difference Result 175 states and 207 transitions. [2024-11-23 23:15:39,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-23 23:15:39,915 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 12 states have internal predecessors, (62), 3 states have call successors, (23), 2 states have call predecessors, (23), 5 states have return successors, (21), 6 states have call predecessors, (21), 2 states have call successors, (21) Word has length 135 [2024-11-23 23:15:39,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:15:39,918 INFO L225 Difference]: With dead ends: 175 [2024-11-23 23:15:39,918 INFO L226 Difference]: Without dead ends: 133 [2024-11-23 23:15:39,919 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-11-23 23:15:39,919 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 11 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1717 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:15:39,920 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1717 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-23 23:15:39,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-23 23:15:39,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 130. [2024-11-23 23:15:39,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 81 states have (on average 1.0987654320987654) internal successors, (89), 83 states have internal predecessors, (89), 32 states have call successors, (32), 15 states have call predecessors, (32), 16 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) [2024-11-23 23:15:39,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 153 transitions. [2024-11-23 23:15:39,931 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 153 transitions. Word has length 135 [2024-11-23 23:15:39,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:15:39,932 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 153 transitions. [2024-11-23 23:15:39,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 12 states have internal predecessors, (62), 3 states have call successors, (23), 2 states have call predecessors, (23), 5 states have return successors, (21), 6 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-23 23:15:39,932 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 153 transitions. [2024-11-23 23:15:39,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-23 23:15:39,934 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:15:39,934 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:15:39,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 23:15:39,935 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:15:39,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:15:39,935 INFO L85 PathProgramCache]: Analyzing trace with hash 416048292, now seen corresponding path program 1 times [2024-11-23 23:15:39,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:15:39,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164291984] [2024-11-23 23:15:39,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:39,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms