./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_eq_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_c0d835c6-6abd-4729-82a7-5387bd596830/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0d835c6-6abd-4729-82a7-5387bd596830/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_c0d835c6-6abd-4729-82a7-5387bd596830/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0d835c6-6abd-4729-82a7-5387bd596830/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0d835c6-6abd-4729-82a7-5387bd596830/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_c0d835c6-6abd-4729-82a7-5387bd596830/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 b64b813c3d856efe8cd859d380d09d4b682c371a0a165a5a5fe0d11dc206dad7 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:38:34,032 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:38:34,128 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0d835c6-6abd-4729-82a7-5387bd596830/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-24 01:38:34,134 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:38:34,134 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:38:34,161 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:38:34,162 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:38:34,162 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:38:34,163 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:38:34,163 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:38:34,163 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:38:34,163 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:38:34,164 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:38:34,164 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:38:34,164 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:38:34,164 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:38:34,165 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:38:34,165 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:38:34,165 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:38:34,165 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:38:34,165 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:38:34,165 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:38:34,166 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:38:34,166 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:38:34,166 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:38:34,166 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:38:34,166 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:38:34,166 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:38:34,167 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:38:34,167 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:38:34,167 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:38:34,167 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:38:34,167 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:38:34,168 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:38:34,168 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:38:34,168 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:38:34,168 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:38:34,168 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:38:34,168 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:38:34,169 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:38:34,169 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:38:34,169 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:38:34,169 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:38:34,169 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:38:34,169 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:38:34,169 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_c0d835c6-6abd-4729-82a7-5387bd596830/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 -> b64b813c3d856efe8cd859d380d09d4b682c371a0a165a5a5fe0d11dc206dad7 [2024-11-24 01:38:34,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:38:34,598 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:38:34,602 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:38:34,604 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:38:34,605 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:38:34,607 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0d835c6-6abd-4729-82a7-5387bd596830/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i [2024-11-24 01:38:38,113 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0d835c6-6abd-4729-82a7-5387bd596830/bin/uautomizer-verify-LYvppIcaGC/data/add7353f2/9280a6ccda9140be95cb0a5144046ee2/FLAGc6729b2d1 [2024-11-24 01:38:38,830 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:38:38,833 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0d835c6-6abd-4729-82a7-5387bd596830/sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i [2024-11-24 01:38:38,891 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0d835c6-6abd-4729-82a7-5387bd596830/bin/uautomizer-verify-LYvppIcaGC/data/add7353f2/9280a6ccda9140be95cb0a5144046ee2/FLAGc6729b2d1 [2024-11-24 01:38:38,916 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0d835c6-6abd-4729-82a7-5387bd596830/bin/uautomizer-verify-LYvppIcaGC/data/add7353f2/9280a6ccda9140be95cb0a5144046ee2 [2024-11-24 01:38:38,918 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:38:38,922 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:38:38,925 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:38:38,926 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:38:38,931 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:38:38,932 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:38:38" (1/1) ... [2024-11-24 01:38:38,933 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28db076e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:38:38, skipping insertion in model container [2024-11-24 01:38:38,933 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:38:38" (1/1) ... [2024-11-24 01:38:39,055 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:38:39,380 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_c0d835c6-6abd-4729-82a7-5387bd596830/sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i[4493,4506] [2024-11-24 01:38:39,391 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_c0d835c6-6abd-4729-82a7-5387bd596830/sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i[4553,4566] [2024-11-24 01:38:40,527 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:40,528 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:40,529 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:40,530 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:40,531 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:40,548 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:40,549 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:40,551 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:40,552 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:41,627 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:41,628 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:41,684 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:38:41,749 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:38:41,767 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_c0d835c6-6abd-4729-82a7-5387bd596830/sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i[4493,4506] [2024-11-24 01:38:41,767 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_c0d835c6-6abd-4729-82a7-5387bd596830/sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i[4553,4566] [2024-11-24 01:38:41,831 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:41,832 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:41,832 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:41,832 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:41,834 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:41,849 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:41,850 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:41,852 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:41,854 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:42,099 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8588] [2024-11-24 01:38:42,102 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:42,103 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:38:42,124 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:38:42,394 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:38:42,394 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:38:42 WrapperNode [2024-11-24 01:38:42,395 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:38:42,396 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:38:42,396 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:38:42,396 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:38:42,407 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:38:42" (1/1) ... [2024-11-24 01:38:42,502 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:38:42" (1/1) ... [2024-11-24 01:38:42,561 INFO L138 Inliner]: procedures = 670, calls = 2270, calls flagged for inlining = 60, calls inlined = 8, statements flattened = 396 [2024-11-24 01:38:42,561 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:38:42,562 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:38:42,562 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:38:42,562 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:38:42,573 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:38:42" (1/1) ... [2024-11-24 01:38:42,573 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:38:42" (1/1) ... [2024-11-24 01:38:42,579 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:38:42" (1/1) ... [2024-11-24 01:38:42,609 INFO L175 MemorySlicer]: Split 279 memory accesses to 4 slices as follows [2, 15, 257, 5]. 92 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 0, 5]. The 260 writes are split as follows [0, 3, 257, 0]. [2024-11-24 01:38:42,610 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:38:42" (1/1) ... [2024-11-24 01:38:42,610 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:38:42" (1/1) ... [2024-11-24 01:38:42,633 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:38:42" (1/1) ... [2024-11-24 01:38:42,635 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:38:42" (1/1) ... [2024-11-24 01:38:42,639 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:38:42" (1/1) ... [2024-11-24 01:38:42,644 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:38:42" (1/1) ... [2024-11-24 01:38:42,647 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:38:42" (1/1) ... [2024-11-24 01:38:42,657 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:38:42,658 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:38:42,658 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:38:42,659 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:38:42,659 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:38:42" (1/1) ... [2024-11-24 01:38:42,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:38:42,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0d835c6-6abd-4729-82a7-5387bd596830/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:38:42,704 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0d835c6-6abd-4729-82a7-5387bd596830/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:38:42,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0d835c6-6abd-4729-82a7-5387bd596830/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:38:42,744 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq_c_str [2024-11-24 01:38:42,745 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq_c_str [2024-11-24 01:38:42,745 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2024-11-24 01:38:42,745 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2024-11-24 01:38:42,746 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2024-11-24 01:38:42,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2024-11-24 01:38:42,746 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-24 01:38:42,746 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-24 01:38:42,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-24 01:38:42,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-24 01:38:42,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-24 01:38:42,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-24 01:38:42,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-24 01:38:42,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-24 01:38:42,749 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-24 01:38:42,749 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-24 01:38:42,749 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-24 01:38:42,749 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-24 01:38:42,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-24 01:38:42,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:38:42,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-24 01:38:42,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-24 01:38:42,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-24 01:38:42,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-24 01:38:42,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:38:42,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:38:42,750 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-24 01:38:42,750 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-24 01:38:42,750 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 01:38:42,750 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 01:38:42,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-24 01:38:42,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-24 01:38:42,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-24 01:38:42,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-24 01:38:42,750 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-24 01:38:42,750 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-24 01:38:42,750 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-24 01:38:42,750 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-24 01:38:42,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-24 01:38:42,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-24 01:38:42,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-24 01:38:42,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-24 01:38:42,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:38:42,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 01:38:42,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-24 01:38:42,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-24 01:38:43,065 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:38:43,067 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:38:51,112 INFO L? ?]: Removed 93 outVars from TransFormulas that were not future-live. [2024-11-24 01:38:51,112 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:38:51,134 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:38:51,135 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-24 01:38:51,135 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:38:51 BoogieIcfgContainer [2024-11-24 01:38:51,137 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:38:51,141 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:38:51,141 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:38:51,147 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:38:51,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:38:38" (1/3) ... [2024-11-24 01:38:51,149 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a537937 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:38:51, skipping insertion in model container [2024-11-24 01:38:51,149 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:38:42" (2/3) ... [2024-11-24 01:38:51,150 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a537937 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:38:51, skipping insertion in model container [2024-11-24 01:38:51,151 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:38:51" (3/3) ... [2024-11-24 01:38:51,152 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_string_eq_c_str_harness.i [2024-11-24 01:38:51,172 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:38:51,174 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_string_eq_c_str_harness.i that has 10 procedures, 107 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 01:38:51,257 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:38:51,275 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;@39095862, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:38:51,276 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 01:38:51,282 INFO L276 IsEmpty]: Start isEmpty. Operand has 107 states, 70 states have (on average 1.2428571428571429) internal successors, (87), 71 states have internal predecessors, (87), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-24 01:38:51,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-24 01:38:51,291 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:38:51,291 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 01:38:51,292 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:38:51,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:38:51,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1307493695, now seen corresponding path program 1 times [2024-11-24 01:38:51,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:38:51,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489667556] [2024-11-24 01:38:51,309 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:38:51,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:39:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:39:57,771 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 01:39:57,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:39:57,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489667556] [2024-11-24 01:39:57,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489667556] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:39:57,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:39:57,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 01:39:57,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930293808] [2024-11-24 01:39:57,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:39:57,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 01:39:57,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:39:57,810 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 01:39:57,810 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:39:57,814 INFO L87 Difference]: Start difference. First operand has 107 states, 70 states have (on average 1.2428571428571429) internal successors, (87), 71 states have internal predecessors, (87), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-24 01:39:57,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:39:57,871 INFO L93 Difference]: Finished difference Result 205 states and 281 transitions. [2024-11-24 01:39:57,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 01:39:57,873 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 36 [2024-11-24 01:39:57,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:39:57,883 INFO L225 Difference]: With dead ends: 205 [2024-11-24 01:39:57,883 INFO L226 Difference]: Without dead ends: 101 [2024-11-24 01:39:57,889 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:39:57,894 INFO L435 NwaCegarLoop]: 136 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, 136 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:39:57,896 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:39:57,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-24 01:39:57,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2024-11-24 01:39:57,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 66 states have internal predecessors, (77), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-24 01:39:57,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 128 transitions. [2024-11-24 01:39:57,959 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 128 transitions. Word has length 36 [2024-11-24 01:39:57,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:39:57,962 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 128 transitions. [2024-11-24 01:39:57,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-24 01:39:57,963 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 128 transitions. [2024-11-24 01:39:57,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-24 01:39:57,967 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:39:57,967 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 01:39:57,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 01:39:57,968 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:39:57,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:39:57,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1298529859, now seen corresponding path program 1 times [2024-11-24 01:39:57,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:39:57,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690652083] [2024-11-24 01:39:57,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:39:57,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:41:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:41:08,126 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 01:41:08,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:41:08,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690652083] [2024-11-24 01:41:08,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690652083] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:41:08,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:41:08,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:41:08,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036485346] [2024-11-24 01:41:08,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:41:08,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:41:08,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:41:08,130 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:41:08,130 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:41:08,130 INFO L87 Difference]: Start difference. First operand 101 states and 128 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-24 01:41:08,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:41:08,249 INFO L93 Difference]: Finished difference Result 148 states and 186 transitions. [2024-11-24 01:41:08,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:41:08,252 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 36 [2024-11-24 01:41:08,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:41:08,254 INFO L225 Difference]: With dead ends: 148 [2024-11-24 01:41:08,254 INFO L226 Difference]: Without dead ends: 101 [2024-11-24 01:41:08,254 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:41:08,257 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 6 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:41:08,257 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 374 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:41:08,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-24 01:41:08,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2024-11-24 01:41:08,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 65 states have (on average 1.1692307692307693) internal successors, (76), 66 states have internal predecessors, (76), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-24 01:41:08,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 127 transitions. [2024-11-24 01:41:08,275 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 127 transitions. Word has length 36 [2024-11-24 01:41:08,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:41:08,275 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 127 transitions. [2024-11-24 01:41:08,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-24 01:41:08,276 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 127 transitions. [2024-11-24 01:41:08,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-24 01:41:08,282 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:41:08,282 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:41:08,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 01:41:08,282 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:41:08,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:41:08,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1909598513, now seen corresponding path program 1 times [2024-11-24 01:41:08,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:41:08,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541414781] [2024-11-24 01:41:08,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:41:08,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:42:15,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:42:17,577 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-24 01:42:17,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:42:17,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541414781] [2024-11-24 01:42:17,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541414781] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:42:17,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:42:17,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 01:42:17,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016477696] [2024-11-24 01:42:17,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:42:17,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 01:42:17,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:42:17,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 01:42:17,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:42:17,580 INFO L87 Difference]: Start difference. First operand 101 states and 127 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 7 states have internal predecessors, (34), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-24 01:42:17,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:42:17,956 INFO L93 Difference]: Finished difference Result 139 states and 170 transitions. [2024-11-24 01:42:17,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 01:42:17,958 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 7 states have internal predecessors, (34), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 64 [2024-11-24 01:42:17,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:42:17,960 INFO L225 Difference]: With dead ends: 139 [2024-11-24 01:42:17,960 INFO L226 Difference]: Without dead ends: 102 [2024-11-24 01:42:17,960 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:42:17,961 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 5 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:42:17,962 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 822 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 01:42:17,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-24 01:42:17,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2024-11-24 01:42:17,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 65 states have (on average 1.1538461538461537) internal successors, (75), 66 states have internal predecessors, (75), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-24 01:42:17,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 126 transitions. [2024-11-24 01:42:17,973 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 126 transitions. Word has length 64 [2024-11-24 01:42:17,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:42:17,974 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 126 transitions. [2024-11-24 01:42:17,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 7 states have internal predecessors, (34), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-24 01:42:17,974 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 126 transitions. [2024-11-24 01:42:17,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-24 01:42:17,976 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:42:17,976 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:42:17,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 01:42:17,977 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:42:17,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:42:17,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1074535689, now seen corresponding path program 1 times [2024-11-24 01:42:17,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:42:17,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230015458] [2024-11-24 01:42:17,977 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:42:17,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:43:24,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:43:25,946 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-24 01:43:25,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:43:25,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230015458] [2024-11-24 01:43:25,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230015458] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:43:25,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:43:25,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:43:25,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130479999] [2024-11-24 01:43:25,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:43:25,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:43:25,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:43:25,950 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:43:25,950 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:43:25,951 INFO L87 Difference]: Start difference. First operand 101 states and 126 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-24 01:43:26,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:43:26,094 INFO L93 Difference]: Finished difference Result 159 states and 199 transitions. [2024-11-24 01:43:26,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:43:26,095 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 65 [2024-11-24 01:43:26,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:43:26,098 INFO L225 Difference]: With dead ends: 159 [2024-11-24 01:43:26,098 INFO L226 Difference]: Without dead ends: 101 [2024-11-24 01:43:26,099 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:43:26,100 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 4 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:43:26,101 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 365 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:43:26,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-24 01:43:26,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2024-11-24 01:43:26,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 65 states have (on average 1.1384615384615384) internal successors, (74), 66 states have internal predecessors, (74), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-24 01:43:26,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 125 transitions. [2024-11-24 01:43:26,113 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 125 transitions. Word has length 65 [2024-11-24 01:43:26,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:43:26,114 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 125 transitions. [2024-11-24 01:43:26,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-24 01:43:26,114 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 125 transitions. [2024-11-24 01:43:26,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-24 01:43:26,117 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:43:26,118 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 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] [2024-11-24 01:43:26,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 01:43:26,118 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:43:26,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:43:26,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1205065792, now seen corresponding path program 1 times [2024-11-24 01:43:26,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:43:26,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220377636] [2024-11-24 01:43:26,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:43:26,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:44:22,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:44:27,295 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-11-24 01:44:27,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:44:27,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220377636] [2024-11-24 01:44:27,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220377636] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:44:27,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:44:27,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-24 01:44:27,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827980237] [2024-11-24 01:44:27,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:44:27,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-24 01:44:27,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:44:27,297 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-24 01:44:27,297 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2024-11-24 01:44:27,298 INFO L87 Difference]: Start difference. First operand 101 states and 125 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 12 states have internal predecessors, (44), 6 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 9 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-24 01:44:28,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:44:28,880 INFO L93 Difference]: Finished difference Result 138 states and 167 transitions. [2024-11-24 01:44:28,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-24 01:44:28,881 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 12 states have internal predecessors, (44), 6 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 9 states have call predecessors, (14), 6 states have call successors, (14) Word has length 99 [2024-11-24 01:44:28,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:44:28,883 INFO L225 Difference]: With dead ends: 138 [2024-11-24 01:44:28,883 INFO L226 Difference]: Without dead ends: 101 [2024-11-24 01:44:28,884 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2024-11-24 01:44:28,885 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 19 mSDsluCounter, 1067 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1177 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:44:28,885 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 1177 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-24 01:44:28,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-24 01:44:28,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2024-11-24 01:44:28,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 65 states have (on average 1.123076923076923) internal successors, (73), 66 states have internal predecessors, (73), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-24 01:44:28,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 124 transitions. [2024-11-24 01:44:28,897 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 124 transitions. Word has length 99 [2024-11-24 01:44:28,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:44:28,898 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 124 transitions. [2024-11-24 01:44:28,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 12 states have internal predecessors, (44), 6 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 9 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-24 01:44:28,898 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 124 transitions. [2024-11-24 01:44:28,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-24 01:44:28,900 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:44:28,901 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:44:28,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 01:44:28,901 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:44:28,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:44:28,902 INFO L85 PathProgramCache]: Analyzing trace with hash -637333488, now seen corresponding path program 1 times [2024-11-24 01:44:28,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:44:28,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767123995] [2024-11-24 01:44:28,902 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:44:28,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:45:26,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:45:28,641 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2024-11-24 01:45:28,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:45:28,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767123995] [2024-11-24 01:45:28,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767123995] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:45:28,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758557132] [2024-11-24 01:45:28,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:45:28,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:45:28,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0d835c6-6abd-4729-82a7-5387bd596830/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:45:28,644 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0d835c6-6abd-4729-82a7-5387bd596830/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:45:28,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0d835c6-6abd-4729-82a7-5387bd596830/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:46:25,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:46:25,976 INFO L256 TraceCheckSpWp]: Trace formula consists of 4045 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:46:25,988 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:46:26,548 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-24 01:46:26,549 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:46:26,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758557132] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:46:26,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:46:26,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2024-11-24 01:46:26,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924198042] [2024-11-24 01:46:26,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:46:26,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:46:26,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:46:26,550 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:46:26,550 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:46:26,551 INFO L87 Difference]: Start difference. First operand 101 states and 124 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-24 01:46:26,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:46:26,781 INFO L93 Difference]: Finished difference Result 155 states and 189 transitions. [2024-11-24 01:46:26,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:46:26,782 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 117 [2024-11-24 01:46:26,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:46:26,783 INFO L225 Difference]: With dead ends: 155 [2024-11-24 01:46:26,783 INFO L226 Difference]: Without dead ends: 101 [2024-11-24 01:46:26,784 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2024-11-24 01:46:26,785 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 1 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:46:26,785 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 355 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:46:26,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-24 01:46:26,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2024-11-24 01:46:26,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 65 states have (on average 1.1076923076923078) internal successors, (72), 66 states have internal predecessors, (72), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-24 01:46:26,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 123 transitions. [2024-11-24 01:46:26,806 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 123 transitions. Word has length 117 [2024-11-24 01:46:26,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:46:26,807 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 123 transitions. [2024-11-24 01:46:26,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-24 01:46:26,807 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 123 transitions. [2024-11-24 01:46:26,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-24 01:46:26,809 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:46:26,809 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:46:26,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0d835c6-6abd-4729-82a7-5387bd596830/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 01:46:27,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0d835c6-6abd-4729-82a7-5387bd596830/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-24 01:46:27,013 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:46:27,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:46:27,013 INFO L85 PathProgramCache]: Analyzing trace with hash -850813917, now seen corresponding path program 1 times [2024-11-24 01:46:27,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:46:27,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693380749] [2024-11-24 01:46:27,013 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:46:27,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:47:32,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:47:56,849 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-11-24 01:47:56,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:47:56,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693380749] [2024-11-24 01:47:56,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693380749] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:47:56,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605132592] [2024-11-24 01:47:56,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:47:56,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:47:56,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0d835c6-6abd-4729-82a7-5387bd596830/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:47:56,856 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0d835c6-6abd-4729-82a7-5387bd596830/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:47:56,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0d835c6-6abd-4729-82a7-5387bd596830/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 01:49:03,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:49:03,857 INFO L256 TraceCheckSpWp]: Trace formula consists of 4073 conjuncts, 93 conjuncts are in the unsatisfiable core [2024-11-24 01:49:03,874 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:49:06,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 53 [2024-11-24 01:49:06,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:49:06,772 INFO L349 Elim1Store]: treesize reduction 13, result has 53.6 percent of original size [2024-11-24 01:49:06,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 96 [2024-11-24 01:49:07,141 INFO L349 Elim1Store]: treesize reduction 87, result has 1.1 percent of original size [2024-11-24 01:49:07,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 134 treesize of output 73 [2024-11-24 01:49:40,155 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:49:40,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 312 treesize of output 268 [2024-11-24 01:49:40,289 INFO L349 Elim1Store]: treesize reduction 52, result has 5.5 percent of original size [2024-11-24 01:49:40,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 181 treesize of output 123 [2024-11-24 01:49:41,213 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 63 proven. 23 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-24 01:49:41,213 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:49:53,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2024-11-24 01:49:53,962 INFO L349 Elim1Store]: treesize reduction 23, result has 61.7 percent of original size [2024-11-24 01:49:53,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 47 treesize of output 101 [2024-11-24 01:49:54,000 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:49:54,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 14 [2024-11-24 01:49:58,078 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-24 01:49:58,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605132592] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:49:58,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:49:58,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 20] total 68 [2024-11-24 01:49:58,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739145829] [2024-11-24 01:49:58,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:49:58,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-11-24 01:49:58,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:58,081 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-11-24 01:49:58,084 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=4341, Unknown=0, NotChecked=0, Total=4556 [2024-11-24 01:49:58,084 INFO L87 Difference]: Start difference. First operand 101 states and 123 transitions. Second operand has 68 states, 59 states have (on average 2.7288135593220337) internal successors, (161), 53 states have internal predecessors, (161), 24 states have call successors, (52), 4 states have call predecessors, (52), 14 states have return successors, (51), 27 states have call predecessors, (51), 21 states have call successors, (51) [2024-11-24 01:50:28,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:50:28,626 INFO L93 Difference]: Finished difference Result 151 states and 180 transitions. [2024-11-24 01:50:28,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-24 01:50:28,626 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 59 states have (on average 2.7288135593220337) internal successors, (161), 53 states have internal predecessors, (161), 24 states have call successors, (52), 4 states have call predecessors, (52), 14 states have return successors, (51), 27 states have call predecessors, (51), 21 states have call successors, (51) Word has length 126 [2024-11-24 01:50:28,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:50:28,629 INFO L225 Difference]: With dead ends: 151 [2024-11-24 01:50:28,629 INFO L226 Difference]: Without dead ends: 149 [2024-11-24 01:50:28,631 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 196 SyntacticMatches, 21 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2188 ImplicationChecksByTransitivity, 51.2s TimeCoverageRelationStatistics Valid=415, Invalid=7775, Unknown=0, NotChecked=0, Total=8190 [2024-11-24 01:50:28,632 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 111 mSDsluCounter, 3370 mSDsCounter, 0 mSdLazyCounter, 2933 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 3465 SdHoareTripleChecker+Invalid, 2983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 2933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.9s IncrementalHoareTripleChecker+Time [2024-11-24 01:50:28,632 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 3465 Invalid, 2983 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 2933 Invalid, 0 Unknown, 0 Unchecked, 20.9s Time] [2024-11-24 01:50:28,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-11-24 01:50:28,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 124. [2024-11-24 01:50:28,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 80 states have (on average 1.0875) internal successors, (87), 82 states have internal predecessors, (87), 28 states have call successors, (28), 14 states have call predecessors, (28), 15 states have return successors, (29), 27 states have call predecessors, (29), 27 states have call successors, (29) [2024-11-24 01:50:28,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 144 transitions. [2024-11-24 01:50:28,660 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 144 transitions. Word has length 126 [2024-11-24 01:50:28,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:50:28,661 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 144 transitions. [2024-11-24 01:50:28,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 59 states have (on average 2.7288135593220337) internal successors, (161), 53 states have internal predecessors, (161), 24 states have call successors, (52), 4 states have call predecessors, (52), 14 states have return successors, (51), 27 states have call predecessors, (51), 21 states have call successors, (51) [2024-11-24 01:50:28,661 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 144 transitions. [2024-11-24 01:50:28,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-24 01:50:28,663 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:50:28,663 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:50:28,684 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0d835c6-6abd-4729-82a7-5387bd596830/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 01:50:28,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0d835c6-6abd-4729-82a7-5387bd596830/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:50:28,864 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:50:28,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:50:28,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1660160543, now seen corresponding path program 1 times [2024-11-24 01:50:28,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:50:28,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370698535] [2024-11-24 01:50:28,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:50:28,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:51:31,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:51:34,249 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-24 01:51:34,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:51:34,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370698535] [2024-11-24 01:51:34,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370698535] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:51:34,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630203211] [2024-11-24 01:51:34,250 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:51:34,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:51:34,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0d835c6-6abd-4729-82a7-5387bd596830/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:51:34,252 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0d835c6-6abd-4729-82a7-5387bd596830/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:51:34,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0d835c6-6abd-4729-82a7-5387bd596830/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 01:52:36,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:52:36,732 INFO L256 TraceCheckSpWp]: Trace formula consists of 4068 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-24 01:52:36,736 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:52:40,021 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-24 01:52:40,021 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:52:45,353 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-24 01:52:45,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630203211] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:52:45,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:52:45,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 35 [2024-11-24 01:52:45,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180896078] [2024-11-24 01:52:45,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:52:45,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-24 01:52:45,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:52:45,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-24 01:52:45,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1109, Unknown=0, NotChecked=0, Total=1190 [2024-11-24 01:52:45,357 INFO L87 Difference]: Start difference. First operand 124 states and 144 transitions. Second operand has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 29 states have internal predecessors, (113), 8 states have call successors, (39), 2 states have call predecessors, (39), 9 states have return successors, (42), 14 states have call predecessors, (42), 7 states have call successors, (42) [2024-11-24 01:52:50,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:52:50,870 INFO L93 Difference]: Finished difference Result 163 states and 188 transitions. [2024-11-24 01:52:50,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-24 01:52:50,871 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 29 states have internal predecessors, (113), 8 states have call successors, (39), 2 states have call predecessors, (39), 9 states have return successors, (42), 14 states have call predecessors, (42), 7 states have call successors, (42) Word has length 126 [2024-11-24 01:52:50,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:52:50,873 INFO L225 Difference]: With dead ends: 163 [2024-11-24 01:52:50,873 INFO L226 Difference]: Without dead ends: 131 [2024-11-24 01:52:50,874 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 232 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=166, Invalid=2090, Unknown=0, NotChecked=0, Total=2256 [2024-11-24 01:52:50,875 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 47 mSDsluCounter, 2699 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 2812 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:52:50,876 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 2812 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-24 01:52:50,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-24 01:52:50,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 125. [2024-11-24 01:52:50,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 82 states have (on average 1.0975609756097562) internal successors, (90), 84 states have internal predecessors, (90), 27 states have call successors, (27), 14 states have call predecessors, (27), 15 states have return successors, (27), 26 states have call predecessors, (27), 26 states have call successors, (27) [2024-11-24 01:52:50,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 144 transitions. [2024-11-24 01:52:50,901 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 144 transitions. Word has length 126 [2024-11-24 01:52:50,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:52:50,902 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 144 transitions. [2024-11-24 01:52:50,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 29 states have internal predecessors, (113), 8 states have call successors, (39), 2 states have call predecessors, (39), 9 states have return successors, (42), 14 states have call predecessors, (42), 7 states have call successors, (42) [2024-11-24 01:52:50,902 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 144 transitions. [2024-11-24 01:52:50,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-24 01:52:50,904 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:52:50,904 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:52:50,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0d835c6-6abd-4729-82a7-5387bd596830/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-24 01:52:51,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0d835c6-6abd-4729-82a7-5387bd596830/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:52:51,105 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:52:51,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:52:51,105 INFO L85 PathProgramCache]: Analyzing trace with hash -260767130, now seen corresponding path program 1 times [2024-11-24 01:52:51,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:52:51,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334224896] [2024-11-24 01:52:51,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:52:51,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms