./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1308bf07-0482-40c8-9c1c-db3060f12903/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1308bf07-0482-40c8-9c1c-db3060f12903/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1308bf07-0482-40c8-9c1c-db3060f12903/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1308bf07-0482-40c8-9c1c-db3060f12903/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1308bf07-0482-40c8-9c1c-db3060f12903/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1308bf07-0482-40c8-9c1c-db3060f12903/bin/uautomizer-verify-qhAvR1uOyd --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 69a4e17497471d2fff231bad199d28dc26e616d1fdaf7fc57a8b45b8dfdd40ce --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 16:10:58,496 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 16:10:58,581 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1308bf07-0482-40c8-9c1c-db3060f12903/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-13 16:10:58,586 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 16:10:58,586 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 16:10:58,608 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 16:10:58,609 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 16:10:58,609 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 16:10:58,609 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 16:10:58,609 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 16:10:58,609 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 16:10:58,609 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 16:10:58,610 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 16:10:58,610 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 16:10:58,610 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 16:10:58,610 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 16:10:58,610 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 16:10:58,610 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 16:10:58,610 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 16:10:58,610 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 16:10:58,611 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 16:10:58,611 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 16:10:58,611 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 16:10:58,611 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 16:10:58,611 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 16:10:58,611 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 16:10:58,611 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 16:10:58,611 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 16:10:58,611 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 16:10:58,611 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:10:58,612 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 16:10:58,612 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 16:10:58,612 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 16:10:58,612 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 16:10:58,612 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 16:10:58,612 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 16:10:58,612 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 16:10:58,612 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 16:10:58,612 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 16:10:58,612 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_1308bf07-0482-40c8-9c1c-db3060f12903/bin/uautomizer-verify-qhAvR1uOyd 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 -> 69a4e17497471d2fff231bad199d28dc26e616d1fdaf7fc57a8b45b8dfdd40ce [2024-11-13 16:10:58,921 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 16:10:58,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 16:10:58,937 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 16:10:58,938 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 16:10:58,939 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 16:10:58,941 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1308bf07-0482-40c8-9c1c-db3060f12903/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i Unable to find full path for "g++" Unable to find full path for "g++" [2024-11-13 16:11:01,937 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 16:11:02,629 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 16:11:02,630 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1308bf07-0482-40c8-9c1c-db3060f12903/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i [2024-11-13 16:11:02,690 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1308bf07-0482-40c8-9c1c-db3060f12903/bin/uautomizer-verify-qhAvR1uOyd/data/b495c0330/574b877d56214d28a1b3cc05b5c8ce18/FLAG2cbdba153 [2024-11-13 16:11:02,712 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1308bf07-0482-40c8-9c1c-db3060f12903/bin/uautomizer-verify-qhAvR1uOyd/data/b495c0330/574b877d56214d28a1b3cc05b5c8ce18 [2024-11-13 16:11:02,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 16:11:02,717 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 16:11:02,719 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 16:11:02,721 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 16:11:02,725 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 16:11:02,726 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:11:02" (1/1) ... [2024-11-13 16:11:02,726 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54867264 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:02, skipping insertion in model container [2024-11-13 16:11:02,726 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:11:02" (1/1) ... [2024-11-13 16:11:02,849 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 16:11:03,151 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_1308bf07-0482-40c8-9c1c-db3060f12903/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i[4496,4509] [2024-11-13 16:11:03,160 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_1308bf07-0482-40c8-9c1c-db3060f12903/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i[4556,4569] [2024-11-13 16:11:04,215 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 16:11:04,216 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 16:11:04,216 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 16:11:04,217 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 16:11:04,218 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 16:11:04,232 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 16:11:04,233 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 16:11:04,235 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 16:11:04,236 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 16:11:05,247 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 16:11:05,248 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 16:11:05,363 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:11:05,436 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 16:11:05,458 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_1308bf07-0482-40c8-9c1c-db3060f12903/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i[4496,4509] [2024-11-13 16:11:05,459 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_1308bf07-0482-40c8-9c1c-db3060f12903/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i[4556,4569] [2024-11-13 16:11:05,525 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 16:11:05,525 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 16:11:05,526 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 16:11:05,527 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 16:11:05,528 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 16:11:05,536 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 16:11:05,536 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 16:11:05,539 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 16:11:05,541 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 16:11:05,757 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8253] [2024-11-13 16:11:05,759 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 16:11:05,759 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 16:11:05,774 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8739-8750] [2024-11-13 16:11:05,836 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:11:06,119 INFO L204 MainTranslator]: Completed translation [2024-11-13 16:11:06,121 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:06 WrapperNode [2024-11-13 16:11:06,122 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 16:11:06,123 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 16:11:06,123 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 16:11:06,124 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 16:11:06,130 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:06" (1/1) ... [2024-11-13 16:11:06,210 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:06" (1/1) ... [2024-11-13 16:11:06,298 INFO L138 Inliner]: procedures = 682, calls = 2798, calls flagged for inlining = 61, calls inlined = 8, statements flattened = 891 [2024-11-13 16:11:06,299 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 16:11:06,299 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 16:11:06,300 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 16:11:06,300 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 16:11:06,308 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:06" (1/1) ... [2024-11-13 16:11:06,309 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:06" (1/1) ... [2024-11-13 16:11:06,315 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:06" (1/1) ... [2024-11-13 16:11:06,445 INFO L175 MemorySlicer]: Split 549 memory accesses to 6 slices as follows [2, 257, 238, 16, 16, 20]. 47 percent of accesses are in the largest equivalence class. The 33 initializations are split as follows [2, 0, 6, 16, 5, 4]. The 494 writes are split as follows [0, 257, 232, 0, 3, 2]. [2024-11-13 16:11:06,449 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:06" (1/1) ... [2024-11-13 16:11:06,449 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:06" (1/1) ... [2024-11-13 16:11:06,508 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:06" (1/1) ... [2024-11-13 16:11:06,511 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:06" (1/1) ... [2024-11-13 16:11:06,528 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:06" (1/1) ... [2024-11-13 16:11:06,536 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:06" (1/1) ... [2024-11-13 16:11:06,552 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 16:11:06,556 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 16:11:06,556 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 16:11:06,556 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 16:11:06,568 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:06" (1/1) ... [2024-11-13 16:11:06,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:11:06,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1308bf07-0482-40c8-9c1c-db3060f12903/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:11:06,626 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1308bf07-0482-40c8-9c1c-db3060f12903/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 16:11:06,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1308bf07-0482-40c8-9c1c-db3060f12903/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 16:11:06,658 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2024-11-13 16:11:06,658 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2024-11-13 16:11:06,658 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2024-11-13 16:11:06,658 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2024-11-13 16:11:06,658 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2024-11-13 16:11:06,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2024-11-13 16:11:06,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 16:11:06,660 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-13 16:11:06,660 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-13 16:11:06,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-13 16:11:06,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-13 16:11:06,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-13 16:11:06,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-13 16:11:06,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-13 16:11:06,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-13 16:11:06,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 16:11:06,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 16:11:06,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-13 16:11:06,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-13 16:11:06,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-13 16:11:06,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-13 16:11:06,661 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-13 16:11:06,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-13 16:11:06,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 16:11:06,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 16:11:06,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-13 16:11:06,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-13 16:11:06,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-13 16:11:06,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-13 16:11:06,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-13 16:11:06,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-13 16:11:06,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 16:11:06,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 16:11:06,664 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-13 16:11:06,664 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-13 16:11:06,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-13 16:11:06,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-13 16:11:06,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-13 16:11:06,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-13 16:11:06,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-13 16:11:06,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-13 16:11:06,667 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-13 16:11:06,667 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-13 16:11:06,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 16:11:06,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-13 16:11:06,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-13 16:11:06,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-13 16:11:06,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-13 16:11:06,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-13 16:11:06,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-13 16:11:06,667 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2024-11-13 16:11:06,667 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2024-11-13 16:11:06,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-13 16:11:06,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-13 16:11:06,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-13 16:11:06,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-13 16:11:06,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-13 16:11:06,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-13 16:11:06,668 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-13 16:11:06,668 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-13 16:11:06,668 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-13 16:11:06,668 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-13 16:11:06,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 16:11:06,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 16:11:06,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-13 16:11:06,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-13 16:11:06,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-13 16:11:06,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-13 16:11:06,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 16:11:06,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 16:11:06,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-13 16:11:06,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-13 16:11:06,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-13 16:11:06,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-13 16:11:07,014 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 16:11:07,016 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 16:11:16,148 INFO L? ?]: Removed 108 outVars from TransFormulas that were not future-live. [2024-11-13 16:11:16,149 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 16:11:16,166 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 16:11:16,166 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-13 16:11:16,166 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:11:16 BoogieIcfgContainer [2024-11-13 16:11:16,166 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 16:11:16,171 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 16:11:16,172 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 16:11:16,177 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 16:11:16,177 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 04:11:02" (1/3) ... [2024-11-13 16:11:16,178 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fff3e0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:11:16, skipping insertion in model container [2024-11-13 16:11:16,178 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:06" (2/3) ... [2024-11-13 16:11:16,178 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fff3e0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:11:16, skipping insertion in model container [2024-11-13 16:11:16,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:11:16" (3/3) ... [2024-11-13 16:11:16,180 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_string_eq_byte_buf_harness.i [2024-11-13 16:11:16,197 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 16:11:16,200 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_string_eq_byte_buf_harness.i that has 11 procedures, 130 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-13 16:11:16,296 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 16:11:16,310 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;@5318ff07, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 16:11:16,313 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 16:11:16,317 INFO L276 IsEmpty]: Start isEmpty. Operand has 130 states, 87 states have (on average 1.264367816091954) internal successors, (110), 88 states have internal predecessors, (110), 31 states have call successors, (31), 10 states have call predecessors, (31), 10 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-13 16:11:16,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-13 16:11:16,332 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:16,333 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:11:16,333 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:11:16,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:16,340 INFO L85 PathProgramCache]: Analyzing trace with hash -312571678, now seen corresponding path program 1 times [2024-11-13 16:11:16,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:11:16,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010244257] [2024-11-13 16:11:16,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:16,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:12:49,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:50,052 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:12:50,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:50,078 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 16:12:50,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:50,092 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-13 16:12:50,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:50,193 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-13 16:12:50,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:50,214 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-13 16:12:50,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:50,228 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-13 16:12:50,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:50,254 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-13 16:12:50,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:50,270 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-13 16:12:50,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:50,293 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-13 16:12:50,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:50,307 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-11-13 16:12:50,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:50,322 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-13 16:12:50,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:12:50,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010244257] [2024-11-13 16:12:50,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010244257] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:12:50,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:12:50,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:12:50,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493831625] [2024-11-13 16:12:50,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:12:50,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:12:50,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:12:50,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:12:50,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:12:50,363 INFO L87 Difference]: Start difference. First operand has 130 states, 87 states have (on average 1.264367816091954) internal successors, (110), 88 states have internal predecessors, (110), 31 states have call successors, (31), 10 states have call predecessors, (31), 10 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-13 16:12:54,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 16:12:56,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:12:56,259 INFO L93 Difference]: Finished difference Result 251 states and 348 transitions. [2024-11-13 16:12:56,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:12:56,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 71 [2024-11-13 16:12:56,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:12:56,274 INFO L225 Difference]: With dead ends: 251 [2024-11-13 16:12:56,275 INFO L226 Difference]: Without dead ends: 125 [2024-11-13 16:12:56,278 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:12:56,284 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 57 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-11-13 16:12:56,284 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 162 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 86 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2024-11-13 16:12:56,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-11-13 16:12:56,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2024-11-13 16:12:56,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 83 states have (on average 1.2530120481927711) internal successors, (104), 84 states have internal predecessors, (104), 31 states have call successors, (31), 10 states have call predecessors, (31), 10 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-13 16:12:56,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 165 transitions. [2024-11-13 16:12:56,346 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 165 transitions. Word has length 71 [2024-11-13 16:12:56,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:12:56,347 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 165 transitions. [2024-11-13 16:12:56,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-13 16:12:56,348 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 165 transitions. [2024-11-13 16:12:56,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-13 16:12:56,353 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:12:56,353 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:12:56,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 16:12:56,353 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:12:56,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:12:56,354 INFO L85 PathProgramCache]: Analyzing trace with hash 547077084, now seen corresponding path program 1 times [2024-11-13 16:12:56,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:12:56,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50441012] [2024-11-13 16:12:56,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:12:56,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:14:23,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:14:26,448 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:14:26,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:14:26,464 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 16:14:26,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:14:26,480 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-13 16:14:26,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:14:26,598 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-13 16:14:26,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:14:26,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-13 16:14:26,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:14:26,629 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-13 16:14:26,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:14:26,968 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-13 16:14:26,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:14:26,985 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-13 16:14:26,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:14:26,997 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-13 16:14:27,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:14:27,009 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-11-13 16:14:27,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:14:27,022 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-13 16:14:27,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:14:27,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50441012] [2024-11-13 16:14:27,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50441012] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:14:27,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:14:27,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 16:14:27,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695240745] [2024-11-13 16:14:27,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:14:27,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 16:14:27,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:14:27,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 16:14:27,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 16:14:27,027 INFO L87 Difference]: Start difference. First operand 125 states and 165 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-13 16:14:31,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 16:14:34,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:14:34,567 INFO L93 Difference]: Finished difference Result 211 states and 280 transitions. [2024-11-13 16:14:34,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 16:14:34,568 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 71 [2024-11-13 16:14:34,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:14:34,571 INFO L225 Difference]: With dead ends: 211 [2024-11-13 16:14:34,571 INFO L226 Difference]: Without dead ends: 128 [2024-11-13 16:14:34,572 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-13 16:14:34,573 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 87 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:14:34,573 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 269 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 243 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2024-11-13 16:14:34,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-13 16:14:34,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2024-11-13 16:14:34,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 85 states have (on average 1.2470588235294118) internal successors, (106), 87 states have internal predecessors, (106), 31 states have call successors, (31), 10 states have call predecessors, (31), 11 states have return successors, (31), 30 states have call predecessors, (31), 30 states have call successors, (31) [2024-11-13 16:14:34,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 168 transitions. [2024-11-13 16:14:34,589 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 168 transitions. Word has length 71 [2024-11-13 16:14:34,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:14:34,590 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 168 transitions. [2024-11-13 16:14:34,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-13 16:14:34,590 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 168 transitions. [2024-11-13 16:14:34,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-13 16:14:34,592 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:14:34,593 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:14:34,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 16:14:34,593 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:14:34,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:14:34,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1917476649, now seen corresponding path program 1 times [2024-11-13 16:14:34,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:14:34,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961585188] [2024-11-13 16:14:34,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:14:34,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:16:03,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:16:04,958 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:16:04,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:16:04,966 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 16:16:04,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:16:04,973 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-13 16:16:04,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:16:05,075 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-13 16:16:05,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:16:05,085 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-13 16:16:05,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:16:05,094 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-13 16:16:05,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:16:05,380 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-13 16:16:05,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:16:05,389 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-13 16:16:05,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:16:05,406 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-13 16:16:05,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:16:05,415 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-13 16:16:05,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:16:05,425 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-13 16:16:05,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:16:05,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961585188] [2024-11-13 16:16:05,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961585188] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:16:05,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:16:05,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 16:16:05,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061743940] [2024-11-13 16:16:05,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:16:05,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 16:16:05,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:16:05,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 16:16:05,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:16:05,429 INFO L87 Difference]: Start difference. First operand 128 states and 168 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-13 16:16:09,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 16:16:13,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:16:13,162 INFO L93 Difference]: Finished difference Result 216 states and 287 transitions. [2024-11-13 16:16:13,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:16:13,163 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 77 [2024-11-13 16:16:13,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:16:13,165 INFO L225 Difference]: With dead ends: 216 [2024-11-13 16:16:13,165 INFO L226 Difference]: Without dead ends: 130 [2024-11-13 16:16:13,166 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-13 16:16:13,166 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 59 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2024-11-13 16:16:13,167 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 322 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 245 Invalid, 1 Unknown, 0 Unchecked, 7.5s Time] [2024-11-13 16:16:13,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-13 16:16:13,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2024-11-13 16:16:13,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 87 states have (on average 1.2413793103448276) internal successors, (108), 89 states have internal predecessors, (108), 31 states have call successors, (31), 10 states have call predecessors, (31), 11 states have return successors, (31), 30 states have call predecessors, (31), 30 states have call successors, (31) [2024-11-13 16:16:13,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 170 transitions. [2024-11-13 16:16:13,181 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 170 transitions. Word has length 77 [2024-11-13 16:16:13,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:16:13,182 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 170 transitions. [2024-11-13 16:16:13,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-13 16:16:13,182 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 170 transitions. [2024-11-13 16:16:13,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-13 16:16:13,183 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:16:13,184 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:16:13,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 16:16:13,184 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:16:13,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:16:13,185 INFO L85 PathProgramCache]: Analyzing trace with hash -532123481, now seen corresponding path program 1 times [2024-11-13 16:16:13,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:16:13,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510348007] [2024-11-13 16:16:13,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:16:13,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:17:46,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:17:48,776 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:17:48,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:17:48,787 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 16:17:48,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:17:48,799 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-13 16:17:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:17:48,970 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-13 16:17:48,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:17:48,987 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-13 16:17:48,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:17:48,994 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-13 16:17:48,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:17:49,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-13 16:17:49,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:17:49,024 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-13 16:17:49,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:17:49,036 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-13 16:17:49,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:17:49,056 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-13 16:17:49,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:17:49,072 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-13 16:17:49,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:17:49,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510348007] [2024-11-13 16:17:49,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510348007] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:17:49,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:17:49,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 16:17:49,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994932268] [2024-11-13 16:17:49,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:17:49,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 16:17:49,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:17:49,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 16:17:49,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:17:49,077 INFO L87 Difference]: Start difference. First operand 130 states and 170 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-13 16:17:53,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 16:17:56,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:17:56,945 INFO L93 Difference]: Finished difference Result 221 states and 292 transitions. [2024-11-13 16:17:56,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:17:56,945 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 77 [2024-11-13 16:17:56,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:17:56,949 INFO L225 Difference]: With dead ends: 221 [2024-11-13 16:17:56,949 INFO L226 Difference]: Without dead ends: 163 [2024-11-13 16:17:56,950 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:17:56,950 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 67 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2024-11-13 16:17:56,951 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 305 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 262 Invalid, 1 Unknown, 0 Unchecked, 7.8s Time] [2024-11-13 16:17:56,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-11-13 16:17:56,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2024-11-13 16:17:56,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 108 states have (on average 1.2407407407407407) internal successors, (134), 110 states have internal predecessors, (134), 43 states have call successors, (43), 10 states have call predecessors, (43), 11 states have return successors, (44), 42 states have call predecessors, (44), 42 states have call successors, (44) [2024-11-13 16:17:56,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 221 transitions. [2024-11-13 16:17:56,976 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 221 transitions. Word has length 77 [2024-11-13 16:17:56,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:17:56,976 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 221 transitions. [2024-11-13 16:17:56,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-13 16:17:56,977 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 221 transitions. [2024-11-13 16:17:56,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-13 16:17:56,979 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:17:56,979 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 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] [2024-11-13 16:17:56,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 16:17:56,979 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:17:56,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:17:56,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1946578088, now seen corresponding path program 1 times [2024-11-13 16:17:56,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:17:56,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947476998] [2024-11-13 16:17:56,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:17:56,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:30,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:35,453 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:19:35,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:35,461 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 16:19:35,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:35,468 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-13 16:19:35,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:35,594 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-13 16:19:35,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:35,643 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-13 16:19:35,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:35,648 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-13 16:19:35,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:35,657 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-13 16:19:35,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:35,664 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-13 16:19:35,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:35,669 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-13 16:19:35,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:35,675 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-13 16:19:35,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:35,680 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-13 16:19:35,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:36,368 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-13 16:19:36,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:36,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947476998] [2024-11-13 16:19:36,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947476998] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:19:36,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:19:36,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 16:19:36,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106393782] [2024-11-13 16:19:36,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:19:36,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 16:19:36,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:36,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 16:19:36,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-13 16:19:36,371 INFO L87 Difference]: Start difference. First operand 163 states and 221 transitions. Second operand has 9 states, 8 states have (on average 5.5) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2024-11-13 16:19:40,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 16:19:48,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:48,361 INFO L93 Difference]: Finished difference Result 174 states and 235 transitions. [2024-11-13 16:19:48,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 16:19:48,362 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.5) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 89 [2024-11-13 16:19:48,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:48,365 INFO L225 Difference]: With dead ends: 174 [2024-11-13 16:19:48,365 INFO L226 Difference]: Without dead ends: 167 [2024-11-13 16:19:48,365 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-11-13 16:19:48,366 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 64 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:48,367 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 653 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 594 Invalid, 1 Unknown, 0 Unchecked, 11.2s Time] [2024-11-13 16:19:48,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-13 16:19:48,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2024-11-13 16:19:48,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 111 states have (on average 1.2342342342342343) internal successors, (137), 114 states have internal predecessors, (137), 43 states have call successors, (43), 10 states have call predecessors, (43), 12 states have return successors, (48), 42 states have call predecessors, (48), 42 states have call successors, (48) [2024-11-13 16:19:48,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 228 transitions. [2024-11-13 16:19:48,399 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 228 transitions. Word has length 89 [2024-11-13 16:19:48,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:48,400 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 228 transitions. [2024-11-13 16:19:48,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.5) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2024-11-13 16:19:48,400 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 228 transitions. [2024-11-13 16:19:48,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-13 16:19:48,405 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:48,405 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 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] [2024-11-13 16:19:48,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 16:19:48,406 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:19:48,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:48,406 INFO L85 PathProgramCache]: Analyzing trace with hash -298019214, now seen corresponding path program 1 times [2024-11-13 16:19:48,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:48,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286392089] [2024-11-13 16:19:48,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:48,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:21:26,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:33,032 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:21:33,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:33,044 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 16:21:33,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:33,053 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-13 16:21:33,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:33,193 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-13 16:21:33,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:33,205 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-13 16:21:33,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:33,212 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-13 16:21:33,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:34,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-13 16:21:34,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:34,632 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-13 16:21:34,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:34,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-13 16:21:34,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:34,650 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-13 16:21:34,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:34,660 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-13 16:21:34,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:36,283 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-13 16:21:36,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:21:36,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286392089] [2024-11-13 16:21:36,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286392089] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:21:36,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487895900] [2024-11-13 16:21:36,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:21:36,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:21:36,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1308bf07-0482-40c8-9c1c-db3060f12903/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:21:36,285 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1308bf07-0482-40c8-9c1c-db3060f12903/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:21:36,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1308bf07-0482-40c8-9c1c-db3060f12903/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 16:23:12,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:23:12,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 7720 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-13 16:23:13,003 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:23:14,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 16:23:17,846 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-13 16:23:17,846 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:23:17,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487895900] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:23:17,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 16:23:17,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 21 [2024-11-13 16:23:17,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718140822] [2024-11-13 16:23:17,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:23:17,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 16:23:17,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:23:17,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 16:23:17,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2024-11-13 16:23:17,849 INFO L87 Difference]: Start difference. First operand 167 states and 228 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 9 states have internal predecessors, (59), 4 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-13 16:23:21,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 16:23:26,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 16:23:30,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:23:30,910 INFO L93 Difference]: Finished difference Result 295 states and 397 transitions. [2024-11-13 16:23:30,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 16:23:30,911 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 9 states have internal predecessors, (59), 4 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 93 [2024-11-13 16:23:30,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:23:30,914 INFO L225 Difference]: With dead ends: 295 [2024-11-13 16:23:30,914 INFO L226 Difference]: Without dead ends: 183 [2024-11-13 16:23:30,915 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2024-11-13 16:23:30,916 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 83 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 17 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 853 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:23:30,916 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 853 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 296 Invalid, 2 Unknown, 0 Unchecked, 12.1s Time] [2024-11-13 16:23:30,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-13 16:23:30,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 174. [2024-11-13 16:23:30,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 116 states have (on average 1.2241379310344827) internal successors, (142), 118 states have internal predecessors, (142), 43 states have call successors, (43), 13 states have call predecessors, (43), 14 states have return successors, (44), 42 states have call predecessors, (44), 42 states have call successors, (44) [2024-11-13 16:23:30,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 229 transitions. [2024-11-13 16:23:30,941 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 229 transitions. Word has length 93 [2024-11-13 16:23:30,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:23:30,942 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 229 transitions. [2024-11-13 16:23:30,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 9 states have internal predecessors, (59), 4 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-13 16:23:30,942 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 229 transitions. [2024-11-13 16:23:30,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-13 16:23:30,944 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:23:30,945 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2024-11-13 16:23:30,998 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1308bf07-0482-40c8-9c1c-db3060f12903/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 16:23:31,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1308bf07-0482-40c8-9c1c-db3060f12903/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-13 16:23:31,146 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:23:31,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:23:31,146 INFO L85 PathProgramCache]: Analyzing trace with hash -824706884, now seen corresponding path program 1 times [2024-11-13 16:23:31,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:23:31,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640308526] [2024-11-13 16:23:31,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:23:31,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:25:03,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:25:10,229 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 16:25:10,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:25:10,233 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 16:25:10,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:25:10,239 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-13 16:25:10,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:25:10,334 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-13 16:25:10,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:25:10,339 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-13 16:25:10,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:25:10,344 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-13 16:25:10,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:25:10,932 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-13 16:25:10,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:25:11,378 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-13 16:25:11,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:25:11,384 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-13 16:25:11,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:25:11,389 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-13 16:25:11,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:25:11,394 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-13 16:25:11,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:25:11,402 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-13 16:25:11,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:25:11,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640308526] [2024-11-13 16:25:11,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640308526] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:25:11,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329482234] [2024-11-13 16:25:11,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:25:11,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:25:11,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1308bf07-0482-40c8-9c1c-db3060f12903/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:25:11,405 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1308bf07-0482-40c8-9c1c-db3060f12903/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:25:11,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1308bf07-0482-40c8-9c1c-db3060f12903/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process