./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 839f41a2c3e360479cb51d794d3ab0f4c035e5d91806fe8b36886ee505a3f070 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:48:29,285 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:48:29,400 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-23 23:48:29,412 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:48:29,412 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:48:29,454 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:48:29,456 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:48:29,457 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:48:29,458 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:48:29,458 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:48:29,459 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:48:29,459 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:48:29,459 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:48:29,459 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:48:29,460 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:48:29,460 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:48:29,461 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:48:29,462 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:48:29,462 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:48:29,462 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:48:29,462 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:48:29,462 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:48:29,462 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:48:29,463 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:48:29,463 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:48:29,463 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:48:29,463 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:48:29,463 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:48:29,463 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:48:29,463 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:48:29,464 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:48:29,464 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:48:29,464 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:48:29,464 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:48:29,464 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:48:29,464 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:48:29,464 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:48:29,464 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:48:29,464 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:48:29,464 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:48:29,465 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:48:29,465 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:48:29,465 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:48:29,465 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:48:29,465 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:48:29,465 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_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 839f41a2c3e360479cb51d794d3ab0f4c035e5d91806fe8b36886ee505a3f070 [2024-11-23 23:48:29,823 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:48:29,832 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:48:29,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:48:29,836 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:48:29,837 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:48:29,838 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i [2024-11-23 23:48:33,021 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/data/307c550fa/c69b9f85921f4c038b5b00de70caa83a/FLAG08136381f [2024-11-23 23:48:33,659 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:48:33,659 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i [2024-11-23 23:48:33,696 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/data/307c550fa/c69b9f85921f4c038b5b00de70caa83a/FLAG08136381f [2024-11-23 23:48:34,081 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/data/307c550fa/c69b9f85921f4c038b5b00de70caa83a [2024-11-23 23:48:34,083 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:48:34,085 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:48:34,086 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:48:34,086 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:48:34,090 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:48:34,091 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:48:34" (1/1) ... [2024-11-23 23:48:34,092 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ab2d667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:34, skipping insertion in model container [2024-11-23 23:48:34,092 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:48:34" (1/1) ... [2024-11-23 23:48:34,195 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:48:34,509 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_f180dfe7-abd8-4924-83cd-312b3f962dd4/sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i[4492,4505] [2024-11-23 23:48:34,517 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_f180dfe7-abd8-4924-83cd-312b3f962dd4/sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i[4552,4565] [2024-11-23 23:48:35,652 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:35,653 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:35,654 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:35,655 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:35,656 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:35,673 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:35,673 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:35,676 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:35,677 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:35,679 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:35,680 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:35,681 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:35,682 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:36,887 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:36,889 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:36,923 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:36,925 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:36,932 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:36,934 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:36,956 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:36,957 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:36,958 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:36,958 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:36,959 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:36,962 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:36,963 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:37,007 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_f180dfe7-abd8-4924-83cd-312b3f962dd4/sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i[227890,227903] [2024-11-23 23:48:37,010 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:48:37,050 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:48:37,069 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_f180dfe7-abd8-4924-83cd-312b3f962dd4/sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i[4492,4505] [2024-11-23 23:48:37,069 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_f180dfe7-abd8-4924-83cd-312b3f962dd4/sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i[4552,4565] [2024-11-23 23:48:37,129 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:37,130 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:37,130 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:37,131 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:37,131 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:37,146 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:37,146 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:37,149 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:37,150 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:37,151 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:37,152 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:37,152 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:37,153 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:37,299 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7558-7569] [2024-11-23 23:48:37,376 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:37,376 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:37,384 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:37,385 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:37,388 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:37,388 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:37,396 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:37,397 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:37,398 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:37,398 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:37,398 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:37,399 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:37,399 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:48:37,420 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_f180dfe7-abd8-4924-83cd-312b3f962dd4/sv-benchmarks/c/aws-c-common/aws_hash_iter_next_harness.i[227890,227903] [2024-11-23 23:48:37,420 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:48:37,663 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:48:37,665 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:37 WrapperNode [2024-11-23 23:48:37,666 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:48:37,667 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:48:37,667 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:48:37,667 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:48:37,676 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:37" (1/1) ... [2024-11-23 23:48:37,800 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:37" (1/1) ... [2024-11-23 23:48:37,874 INFO L138 Inliner]: procedures = 763, calls = 2447, calls flagged for inlining = 68, calls inlined = 11, statements flattened = 643 [2024-11-23 23:48:37,875 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:48:37,876 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:48:37,876 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:48:37,876 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:48:37,909 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:37" (1/1) ... [2024-11-23 23:48:37,910 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:37" (1/1) ... [2024-11-23 23:48:37,928 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:37" (1/1) ... [2024-11-23 23:48:38,040 INFO L175 MemorySlicer]: Split 329 memory accesses to 9 slices as follows [238, 2, 6, 43, 22, 2, 8, 3, 5]. 72 percent of accesses are in the largest equivalence class. The 22 initializations are split as follows [6, 2, 0, 9, 0, 0, 0, 0, 5]. The 247 writes are split as follows [232, 0, 2, 9, 1, 1, 1, 1, 0]. [2024-11-23 23:48:38,040 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:37" (1/1) ... [2024-11-23 23:48:38,040 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:37" (1/1) ... [2024-11-23 23:48:38,117 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:37" (1/1) ... [2024-11-23 23:48:38,122 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:37" (1/1) ... [2024-11-23 23:48:38,129 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:37" (1/1) ... [2024-11-23 23:48:38,151 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:37" (1/1) ... [2024-11-23 23:48:38,158 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:37" (1/1) ... [2024-11-23 23:48:38,176 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:48:38,177 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:48:38,180 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:48:38,180 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:48:38,181 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:37" (1/1) ... [2024-11-23 23:48:38,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:48:38,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:48:38,224 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:48:38,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:48:38,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-11-23 23:48:38,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-11-23 23:48:38,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-11-23 23:48:38,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-11-23 23:48:38,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2024-11-23 23:48:38,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2024-11-23 23:48:38,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2024-11-23 23:48:38,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2024-11-23 23:48:38,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2024-11-23 23:48:38,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-23 23:48:38,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-23 23:48:38,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-23 23:48:38,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-23 23:48:38,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-23 23:48:38,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-23 23:48:38,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-23 23:48:38,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-11-23 23:48:38,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2024-11-23 23:48:38,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2024-11-23 23:48:38,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 23:48:38,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 23:48:38,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-23 23:48:38,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-23 23:48:38,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-23 23:48:38,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-23 23:48:38,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-23 23:48:38,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-23 23:48:38,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-23 23:48:38,270 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-11-23 23:48:38,270 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-11-23 23:48:38,270 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-23 23:48:38,270 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-23 23:48:38,270 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2024-11-23 23:48:38,270 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2024-11-23 23:48:38,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-23 23:48:38,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:48:38,271 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_next [2024-11-23 23:48:38,271 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_next [2024-11-23 23:48:38,271 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2024-11-23 23:48:38,271 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2024-11-23 23:48:38,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-23 23:48:38,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-23 23:48:38,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-23 23:48:38,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-23 23:48:38,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-23 23:48:38,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-23 23:48:38,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-23 23:48:38,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-23 23:48:38,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-11-23 23:48:38,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:48:38,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:48:38,274 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-23 23:48:38,274 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-23 23:48:38,274 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2024-11-23 23:48:38,274 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2024-11-23 23:48:38,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-23 23:48:38,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-23 23:48:38,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-23 23:48:38,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-23 23:48:38,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-23 23:48:38,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-23 23:48:38,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-11-23 23:48:38,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2024-11-23 23:48:38,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#8 [2024-11-23 23:48:38,274 INFO L130 BoogieDeclarations]: Found specification of procedure s_get_next_element [2024-11-23 23:48:38,274 INFO L138 BoogieDeclarations]: Found implementation of procedure s_get_next_element [2024-11-23 23:48:38,274 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 23:48:38,275 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 23:48:38,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-23 23:48:38,275 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_is_valid [2024-11-23 23:48:38,275 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_is_valid [2024-11-23 23:48:38,275 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2024-11-23 23:48:38,275 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2024-11-23 23:48:38,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-23 23:48:38,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-23 23:48:38,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-23 23:48:38,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-23 23:48:38,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-23 23:48:38,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-23 23:48:38,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-23 23:48:38,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-23 23:48:38,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-23 23:48:38,276 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2024-11-23 23:48:38,276 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2024-11-23 23:48:38,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-23 23:48:38,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-23 23:48:38,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-23 23:48:38,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-23 23:48:38,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-23 23:48:38,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-23 23:48:38,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-23 23:48:38,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-23 23:48:38,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2024-11-23 23:48:38,279 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2024-11-23 23:48:38,279 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2024-11-23 23:48:38,279 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2024-11-23 23:48:38,280 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2024-11-23 23:48:38,280 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-23 23:48:38,280 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-23 23:48:38,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 23:48:38,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 23:48:38,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-23 23:48:38,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-23 23:48:38,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-23 23:48:38,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-23 23:48:38,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-23 23:48:38,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-23 23:48:38,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-23 23:48:38,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:48:38,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 23:48:38,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 23:48:38,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-23 23:48:38,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-23 23:48:38,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-23 23:48:38,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-23 23:48:38,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-23 23:48:38,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-23 23:48:38,281 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2024-11-23 23:48:38,281 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2024-11-23 23:48:38,747 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:48:38,751 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:48:45,094 INFO L? ?]: Removed 161 outVars from TransFormulas that were not future-live. [2024-11-23 23:48:45,094 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:48:45,108 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:48:45,108 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-23 23:48:45,109 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:48:45 BoogieIcfgContainer [2024-11-23 23:48:45,109 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:48:45,111 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:48:45,112 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:48:45,117 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:48:45,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:48:34" (1/3) ... [2024-11-23 23:48:45,118 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d7407be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:48:45, skipping insertion in model container [2024-11-23 23:48:45,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:37" (2/3) ... [2024-11-23 23:48:45,119 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d7407be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:48:45, skipping insertion in model container [2024-11-23 23:48:45,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:48:45" (3/3) ... [2024-11-23 23:48:45,120 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_hash_iter_next_harness.i [2024-11-23 23:48:45,138 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:48:45,140 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_hash_iter_next_harness.i that has 17 procedures, 173 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 23:48:45,218 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:48:45,234 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;@1ccd1ba0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:48:45,235 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 23:48:45,240 INFO L276 IsEmpty]: Start isEmpty. Operand has 173 states, 112 states have (on average 1.2589285714285714) internal successors, (141), 113 states have internal predecessors, (141), 43 states have call successors, (43), 16 states have call predecessors, (43), 16 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-23 23:48:45,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-23 23:48:45,262 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:48:45,263 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:48:45,264 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:48:45,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:48:45,271 INFO L85 PathProgramCache]: Analyzing trace with hash -150243314, now seen corresponding path program 1 times [2024-11-23 23:48:45,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:48:45,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796006577] [2024-11-23 23:48:45,282 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:48:45,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:48:53,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:48:53,851 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-11-23 23:48:53,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:48:53,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796006577] [2024-11-23 23:48:53,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796006577] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:48:53,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060200908] [2024-11-23 23:48:53,855 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:48:53,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:48:53,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:48:53,859 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:48:53,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:49:02,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:49:02,649 INFO L256 TraceCheckSpWp]: Trace formula consists of 4566 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 23:49:02,664 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:49:02,692 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-11-23 23:49:02,693 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:49:02,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060200908] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:49:02,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:49:02,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-23 23:49:02,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546972108] [2024-11-23 23:49:02,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:49:02,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 23:49:02,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:49:02,722 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 23:49:02,723 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:49:02,726 INFO L87 Difference]: Start difference. First operand has 173 states, 112 states have (on average 1.2589285714285714) internal successors, (141), 113 states have internal predecessors, (141), 43 states have call successors, (43), 16 states have call predecessors, (43), 16 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-23 23:49:02,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:49:02,776 INFO L93 Difference]: Finished difference Result 338 states and 479 transitions. [2024-11-23 23:49:02,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 23:49:02,778 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 156 [2024-11-23 23:49:02,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:49:02,787 INFO L225 Difference]: With dead ends: 338 [2024-11-23 23:49:02,788 INFO L226 Difference]: Without dead ends: 167 [2024-11-23 23:49:02,793 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:49:02,796 INFO L435 NwaCegarLoop]: 223 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:49:02,797 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:49:02,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-23 23:49:02,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2024-11-23 23:49:02,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 107 states have (on average 1.233644859813084) internal successors, (132), 108 states have internal predecessors, (132), 43 states have call successors, (43), 16 states have call predecessors, (43), 16 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-23 23:49:02,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 217 transitions. [2024-11-23 23:49:02,850 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 217 transitions. Word has length 156 [2024-11-23 23:49:02,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:49:02,850 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 217 transitions. [2024-11-23 23:49:02,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-23 23:49:02,851 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 217 transitions. [2024-11-23 23:49:02,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-23 23:49:02,858 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:49:02,861 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:49:02,876 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 23:49:03,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-23 23:49:03,062 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:49:03,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:49:03,063 INFO L85 PathProgramCache]: Analyzing trace with hash -213742062, now seen corresponding path program 1 times [2024-11-23 23:49:03,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:49:03,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307725597] [2024-11-23 23:49:03,063 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:49:03,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:49:09,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:49:11,066 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2024-11-23 23:49:11,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:49:11,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307725597] [2024-11-23 23:49:11,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307725597] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:49:11,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65793831] [2024-11-23 23:49:11,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:49:11,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:49:11,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:49:11,074 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:49:11,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 23:49:18,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:49:18,463 INFO L256 TraceCheckSpWp]: Trace formula consists of 4566 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 23:49:18,476 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:49:19,914 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-23 23:49:19,914 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:49:19,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65793831] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:49:19,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:49:19,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-23 23:49:19,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011503397] [2024-11-23 23:49:19,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:49:19,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:49:19,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:49:19,917 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:49:19,918 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:49:19,918 INFO L87 Difference]: Start difference. First operand 167 states and 217 transitions. Second operand has 6 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (24), 2 states have call predecessors, (24), 3 states have call successors, (24) [2024-11-23 23:49:21,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:49:21,326 INFO L93 Difference]: Finished difference Result 313 states and 412 transitions. [2024-11-23 23:49:21,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:49:21,327 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (24), 2 states have call predecessors, (24), 3 states have call successors, (24) Word has length 156 [2024-11-23 23:49:21,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:49:21,332 INFO L225 Difference]: With dead ends: 313 [2024-11-23 23:49:21,332 INFO L226 Difference]: Without dead ends: 173 [2024-11-23 23:49:21,333 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:49:21,336 INFO L435 NwaCegarLoop]: 184 mSDtfsCounter, 181 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:49:21,336 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 699 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-23 23:49:21,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-23 23:49:21,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 169. [2024-11-23 23:49:21,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 108 states have (on average 1.2314814814814814) internal successors, (133), 110 states have internal predecessors, (133), 43 states have call successors, (43), 16 states have call predecessors, (43), 17 states have return successors, (45), 42 states have call predecessors, (45), 42 states have call successors, (45) [2024-11-23 23:49:21,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 221 transitions. [2024-11-23 23:49:21,368 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 221 transitions. Word has length 156 [2024-11-23 23:49:21,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:49:21,369 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 221 transitions. [2024-11-23 23:49:21,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (24), 2 states have call predecessors, (24), 3 states have call successors, (24) [2024-11-23 23:49:21,369 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 221 transitions. [2024-11-23 23:49:21,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-23 23:49:21,377 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:49:21,377 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:49:21,394 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 23:49:21,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:49:21,578 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:49:21,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:49:21,579 INFO L85 PathProgramCache]: Analyzing trace with hash -358435602, now seen corresponding path program 1 times [2024-11-23 23:49:21,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:49:21,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879765139] [2024-11-23 23:49:21,579 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:49:21,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:49:27,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:49:28,698 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2024-11-23 23:49:28,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:49:28,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879765139] [2024-11-23 23:49:28,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879765139] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:49:28,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405257619] [2024-11-23 23:49:28,699 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:49:28,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:49:28,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:49:28,705 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:49:28,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 23:49:35,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:49:35,518 INFO L256 TraceCheckSpWp]: Trace formula consists of 4571 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 23:49:35,523 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:49:37,212 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 102 proven. 55 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-23 23:49:37,213 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:49:39,610 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2024-11-23 23:49:39,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405257619] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:49:39,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:49:39,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 16 [2024-11-23 23:49:39,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013051754] [2024-11-23 23:49:39,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:49:39,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-23 23:49:39,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:49:39,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-23 23:49:39,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2024-11-23 23:49:39,614 INFO L87 Difference]: Start difference. First operand 169 states and 221 transitions. Second operand has 16 states, 14 states have (on average 10.071428571428571) internal successors, (141), 14 states have internal predecessors, (141), 8 states have call successors, (63), 5 states have call predecessors, (63), 5 states have return successors, (59), 7 states have call predecessors, (59), 8 states have call successors, (59) [2024-11-23 23:49:43,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:49:43,827 INFO L93 Difference]: Finished difference Result 335 states and 443 transitions. [2024-11-23 23:49:43,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 23:49:43,829 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 10.071428571428571) internal successors, (141), 14 states have internal predecessors, (141), 8 states have call successors, (63), 5 states have call predecessors, (63), 5 states have return successors, (59), 7 states have call predecessors, (59), 8 states have call successors, (59) Word has length 157 [2024-11-23 23:49:43,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:49:43,832 INFO L225 Difference]: With dead ends: 335 [2024-11-23 23:49:43,832 INFO L226 Difference]: Without dead ends: 178 [2024-11-23 23:49:43,833 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 303 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2024-11-23 23:49:43,834 INFO L435 NwaCegarLoop]: 173 mSDtfsCounter, 310 mSDsluCounter, 1664 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 1837 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:49:43,835 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 1837 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-23 23:49:43,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-11-23 23:49:43,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 174. [2024-11-23 23:49:43,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 112 states have (on average 1.2232142857142858) internal successors, (137), 114 states have internal predecessors, (137), 43 states have call successors, (43), 16 states have call predecessors, (43), 18 states have return successors, (44), 43 states have call predecessors, (44), 42 states have call successors, (44) [2024-11-23 23:49:43,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 224 transitions. [2024-11-23 23:49:43,858 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 224 transitions. Word has length 157 [2024-11-23 23:49:43,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:49:43,859 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 224 transitions. [2024-11-23 23:49:43,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 10.071428571428571) internal successors, (141), 14 states have internal predecessors, (141), 8 states have call successors, (63), 5 states have call predecessors, (63), 5 states have return successors, (59), 7 states have call predecessors, (59), 8 states have call successors, (59) [2024-11-23 23:49:43,859 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 224 transitions. [2024-11-23 23:49:43,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-23 23:49:43,863 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:49:43,863 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:49:43,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-23 23:49:44,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:49:44,064 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:49:44,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:49:44,065 INFO L85 PathProgramCache]: Analyzing trace with hash -47352484, now seen corresponding path program 1 times [2024-11-23 23:49:44,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:49:44,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892367727] [2024-11-23 23:49:44,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:49:44,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:49:49,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:49:54,799 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2024-11-23 23:49:54,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:49:54,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892367727] [2024-11-23 23:49:54,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892367727] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:49:54,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752696051] [2024-11-23 23:49:54,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:49:54,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:49:54,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:49:54,803 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:49:54,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 23:50:02,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:50:02,510 INFO L256 TraceCheckSpWp]: Trace formula consists of 4584 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-23 23:50:02,517 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:50:05,072 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 6 proven. 128 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-11-23 23:50:05,073 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:50:08,489 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2024-11-23 23:50:08,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752696051] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 23:50:08,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:50:08,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10, 10] total 25 [2024-11-23 23:50:08,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58284054] [2024-11-23 23:50:08,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:50:08,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 23:50:08,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:50:08,492 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 23:50:08,493 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=542, Unknown=0, NotChecked=0, Total=600 [2024-11-23 23:50:08,493 INFO L87 Difference]: Start difference. First operand 174 states and 224 transitions. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 8 states have internal predecessors, (64), 6 states have call successors, (26), 4 states have call predecessors, (26), 2 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) [2024-11-23 23:50:12,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:50:12,236 INFO L93 Difference]: Finished difference Result 254 states and 332 transitions. [2024-11-23 23:50:12,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 23:50:12,237 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 8 states have internal predecessors, (64), 6 states have call successors, (26), 4 states have call predecessors, (26), 2 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) Word has length 170 [2024-11-23 23:50:12,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:50:12,241 INFO L225 Difference]: With dead ends: 254 [2024-11-23 23:50:12,241 INFO L226 Difference]: Without dead ends: 178 [2024-11-23 23:50:12,243 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 326 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=92, Invalid=900, Unknown=0, NotChecked=0, Total=992 [2024-11-23 23:50:12,244 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 235 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:50:12,246 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 1129 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-23 23:50:12,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-11-23 23:50:12,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 172. [2024-11-23 23:50:12,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 111 states have (on average 1.2162162162162162) internal successors, (135), 112 states have internal predecessors, (135), 43 states have call successors, (43), 16 states have call predecessors, (43), 17 states have return successors, (43), 43 states have call predecessors, (43), 42 states have call successors, (43) [2024-11-23 23:50:12,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 221 transitions. [2024-11-23 23:50:12,283 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 221 transitions. Word has length 170 [2024-11-23 23:50:12,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:50:12,284 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 221 transitions. [2024-11-23 23:50:12,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 8 states have internal predecessors, (64), 6 states have call successors, (26), 4 states have call predecessors, (26), 2 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) [2024-11-23 23:50:12,285 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 221 transitions. [2024-11-23 23:50:12,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-23 23:50:12,289 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:50:12,289 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:50:12,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 23:50:12,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:50:12,490 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:50:12,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:50:12,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1654169612, now seen corresponding path program 1 times [2024-11-23 23:50:12,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:50:12,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060797919] [2024-11-23 23:50:12,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:50:12,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:50:17,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:50:22,511 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2024-11-23 23:50:22,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:50:22,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060797919] [2024-11-23 23:50:22,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060797919] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:50:22,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855273628] [2024-11-23 23:50:22,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:50:22,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:50:22,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:50:22,514 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:50:22,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 23:50:29,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:50:29,426 INFO L256 TraceCheckSpWp]: Trace formula consists of 4578 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-23 23:50:29,435 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:50:32,533 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 9 proven. 131 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-23 23:50:32,533 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:50:34,486 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2024-11-23 23:50:34,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855273628] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 23:50:34,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:50:34,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10, 12] total 22 [2024-11-23 23:50:34,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179691864] [2024-11-23 23:50:34,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:50:34,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:50:34,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:50:34,489 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:50:34,489 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=416, Unknown=0, NotChecked=0, Total=462 [2024-11-23 23:50:34,489 INFO L87 Difference]: Start difference. First operand 172 states and 221 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:50:34,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:50:34,813 INFO L93 Difference]: Finished difference Result 180 states and 229 transitions. [2024-11-23 23:50:34,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:50:34,814 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 170 [2024-11-23 23:50:34,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:50:34,817 INFO L225 Difference]: With dead ends: 180 [2024-11-23 23:50:34,817 INFO L226 Difference]: Without dead ends: 178 [2024-11-23 23:50:34,818 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=50, Invalid=456, Unknown=0, NotChecked=0, Total=506 [2024-11-23 23:50:34,821 INFO L435 NwaCegarLoop]: 213 mSDtfsCounter, 3 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:50:34,821 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 841 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:50:34,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-11-23 23:50:34,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 177. [2024-11-23 23:50:34,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 114 states have (on average 1.2105263157894737) internal successors, (138), 116 states have internal predecessors, (138), 44 states have call successors, (44), 17 states have call predecessors, (44), 18 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2024-11-23 23:50:34,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 226 transitions. [2024-11-23 23:50:34,860 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 226 transitions. Word has length 170 [2024-11-23 23:50:34,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:50:34,861 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 226 transitions. [2024-11-23 23:50:34,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:50:34,861 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 226 transitions. [2024-11-23 23:50:34,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-23 23:50:34,865 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:50:34,866 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:50:34,892 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-23 23:50:35,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:50:35,066 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:50:35,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:50:35,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1656016654, now seen corresponding path program 1 times [2024-11-23 23:50:35,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:50:35,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319971786] [2024-11-23 23:50:35,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:50:35,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:50:40,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:50:43,977 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2024-11-23 23:50:43,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:50:43,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319971786] [2024-11-23 23:50:43,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319971786] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:50:43,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420238878] [2024-11-23 23:50:43,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:50:43,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:50:43,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:50:43,980 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:50:43,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 23:50:51,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:50:51,291 INFO L256 TraceCheckSpWp]: Trace formula consists of 4581 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-23 23:50:51,303 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:50:51,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-23 23:50:53,086 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-23 23:50:53,086 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:50:53,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420238878] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:50:53,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:50:53,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2024-11-23 23:50:53,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971123656] [2024-11-23 23:50:53,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:50:53,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 23:50:53,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:50:53,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 23:50:53,089 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2024-11-23 23:50:53,089 INFO L87 Difference]: Start difference. First operand 177 states and 226 transitions. Second operand has 9 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2024-11-23 23:50:57,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:51:01,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:51:05,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:51:09,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:51:16,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:51:20,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:51:21,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:51:21,234 INFO L93 Difference]: Finished difference Result 417 states and 523 transitions. [2024-11-23 23:51:21,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 23:51:21,235 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) Word has length 170 [2024-11-23 23:51:21,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:51:21,238 INFO L225 Difference]: With dead ends: 417 [2024-11-23 23:51:21,238 INFO L226 Difference]: Without dead ends: 267 [2024-11-23 23:51:21,239 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2024-11-23 23:51:21,239 INFO L435 NwaCegarLoop]: 239 mSDtfsCounter, 333 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 100 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:51:21,240 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 1153 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 360 Invalid, 6 Unknown, 0 Unchecked, 27.3s Time] [2024-11-23 23:51:21,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2024-11-23 23:51:21,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 263. [2024-11-23 23:51:21,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 178 states have (on average 1.2303370786516854) internal successors, (219), 181 states have internal predecessors, (219), 53 states have call successors, (53), 28 states have call predecessors, (53), 31 states have return successors, (55), 53 states have call predecessors, (55), 52 states have call successors, (55) [2024-11-23 23:51:21,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 327 transitions. [2024-11-23 23:51:21,281 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 327 transitions. Word has length 170 [2024-11-23 23:51:21,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:51:21,282 INFO L471 AbstractCegarLoop]: Abstraction has 263 states and 327 transitions. [2024-11-23 23:51:21,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2024-11-23 23:51:21,283 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 327 transitions. [2024-11-23 23:51:21,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-23 23:51:21,288 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:51:21,289 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:51:21,316 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-23 23:51:21,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-23 23:51:21,493 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:51:21,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:51:21,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1118247193, now seen corresponding path program 1 times [2024-11-23 23:51:21,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:51:21,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847912916] [2024-11-23 23:51:21,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:51:21,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:51:26,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:51:30,053 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2024-11-23 23:51:30,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:51:30,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847912916] [2024-11-23 23:51:30,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847912916] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:51:30,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633449057] [2024-11-23 23:51:30,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:51:30,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:51:30,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:51:30,056 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:51:30,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 23:51:37,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:51:37,646 INFO L256 TraceCheckSpWp]: Trace formula consists of 4608 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-23 23:51:37,654 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:51:38,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-23 23:51:42,516 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-23 23:51:42,516 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:51:42,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633449057] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:51:42,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:51:42,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2024-11-23 23:51:42,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81604746] [2024-11-23 23:51:42,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:51:42,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 23:51:42,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:51:42,518 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 23:51:42,518 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2024-11-23 23:51:42,518 INFO L87 Difference]: Start difference. First operand 263 states and 327 transitions. Second operand has 11 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 6 states have call successors, (29), 4 states have call predecessors, (29), 4 states have return successors, (27), 5 states have call predecessors, (27), 6 states have call successors, (27) [2024-11-23 23:51:46,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:51:50,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:51:54,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:51:59,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:52:07,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:52:11,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:52:12,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:52:12,047 INFO L93 Difference]: Finished difference Result 386 states and 485 transitions. [2024-11-23 23:52:12,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 23:52:12,047 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 6 states have call successors, (29), 4 states have call predecessors, (29), 4 states have return successors, (27), 5 states have call predecessors, (27), 6 states have call successors, (27) Word has length 179 [2024-11-23 23:52:12,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:52:12,050 INFO L225 Difference]: With dead ends: 386 [2024-11-23 23:52:12,050 INFO L226 Difference]: Without dead ends: 265 [2024-11-23 23:52:12,051 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 164 SyntacticMatches, 8 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=96, Invalid=606, Unknown=0, NotChecked=0, Total=702 [2024-11-23 23:52:12,052 INFO L435 NwaCegarLoop]: 236 mSDtfsCounter, 305 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 87 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:52:12,052 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 1175 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 470 Invalid, 6 Unknown, 0 Unchecked, 28.2s Time] [2024-11-23 23:52:12,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2024-11-23 23:52:12,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 261. [2024-11-23 23:52:12,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 177 states have (on average 1.2259887005649717) internal successors, (217), 179 states have internal predecessors, (217), 53 states have call successors, (53), 28 states have call predecessors, (53), 30 states have return successors, (54), 53 states have call predecessors, (54), 52 states have call successors, (54) [2024-11-23 23:52:12,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 324 transitions. [2024-11-23 23:52:12,077 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 324 transitions. Word has length 179 [2024-11-23 23:52:12,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:52:12,078 INFO L471 AbstractCegarLoop]: Abstraction has 261 states and 324 transitions. [2024-11-23 23:52:12,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 6 states have call successors, (29), 4 states have call predecessors, (29), 4 states have return successors, (27), 5 states have call predecessors, (27), 6 states have call successors, (27) [2024-11-23 23:52:12,078 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 324 transitions. [2024-11-23 23:52:12,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-23 23:52:12,081 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:52:12,081 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:52:12,109 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-23 23:52:12,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-23 23:52:12,282 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:52:12,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:52:12,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1555383496, now seen corresponding path program 1 times [2024-11-23 23:52:12,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:52:12,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626761349] [2024-11-23 23:52:12,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:52:12,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:52:17,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:52:20,124 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-11-23 23:52:20,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:52:20,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626761349] [2024-11-23 23:52:20,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626761349] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:52:20,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867251006] [2024-11-23 23:52:20,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:52:20,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:52:20,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:52:20,126 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:52:20,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 23:52:29,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:52:29,515 INFO L256 TraceCheckSpWp]: Trace formula consists of 4635 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-23 23:52:29,521 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:52:29,904 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 15 treesize of output 1 [2024-11-23 23:52:30,985 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-23 23:52:30,986 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:52:30,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867251006] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:52:30,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:52:30,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 15 [2024-11-23 23:52:30,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967099377] [2024-11-23 23:52:30,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:52:30,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 23:52:30,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:52:30,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 23:52:30,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-11-23 23:52:30,988 INFO L87 Difference]: Start difference. First operand 261 states and 324 transitions. Second operand has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 9 states have internal predecessors, (89), 4 states have call successors, (29), 3 states have call predecessors, (29), 4 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2024-11-23 23:52:35,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:52:35,137 INFO L93 Difference]: Finished difference Result 487 states and 610 transitions. [2024-11-23 23:52:35,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 23:52:35,137 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 9 states have internal predecessors, (89), 4 states have call successors, (29), 3 states have call predecessors, (29), 4 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 188 [2024-11-23 23:52:35,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:52:35,139 INFO L225 Difference]: With dead ends: 487 [2024-11-23 23:52:35,139 INFO L226 Difference]: Without dead ends: 290 [2024-11-23 23:52:35,140 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2024-11-23 23:52:35,141 INFO L435 NwaCegarLoop]: 241 mSDtfsCounter, 201 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 1313 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:52:35,141 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 1313 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-23 23:52:35,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2024-11-23 23:52:35,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 279. [2024-11-23 23:52:35,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 192 states have (on average 1.2239583333333333) internal successors, (235), 195 states have internal predecessors, (235), 53 states have call successors, (53), 30 states have call predecessors, (53), 33 states have return successors, (55), 53 states have call predecessors, (55), 52 states have call successors, (55) [2024-11-23 23:52:35,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 343 transitions. [2024-11-23 23:52:35,166 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 343 transitions. Word has length 188 [2024-11-23 23:52:35,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:52:35,167 INFO L471 AbstractCegarLoop]: Abstraction has 279 states and 343 transitions. [2024-11-23 23:52:35,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 9 states have internal predecessors, (89), 4 states have call successors, (29), 3 states have call predecessors, (29), 4 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2024-11-23 23:52:35,167 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 343 transitions. [2024-11-23 23:52:35,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-23 23:52:35,169 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:52:35,169 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:52:35,187 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-23 23:52:35,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:52:35,370 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:52:35,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:52:35,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1067336390, now seen corresponding path program 1 times [2024-11-23 23:52:35,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:52:35,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585094328] [2024-11-23 23:52:35,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:52:35,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:52:40,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:52:41,820 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-11-23 23:52:41,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:52:41,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585094328] [2024-11-23 23:52:41,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585094328] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:52:41,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364864188] [2024-11-23 23:52:41,820 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:52:41,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:52:41,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:52:41,823 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:52:41,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-23 23:52:50,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:52:50,788 INFO L256 TraceCheckSpWp]: Trace formula consists of 4630 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 23:52:50,799 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:52:51,452 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-23 23:52:51,452 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:52:51,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364864188] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:52:51,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:52:51,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-23 23:52:51,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095943578] [2024-11-23 23:52:51,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:52:51,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:52:51,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:52:51,454 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:52:51,454 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:52:51,455 INFO L87 Difference]: Start difference. First operand 279 states and 343 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2024-11-23 23:52:52,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:52:52,414 INFO L93 Difference]: Finished difference Result 493 states and 616 transitions. [2024-11-23 23:52:52,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:52:52,414 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 188 [2024-11-23 23:52:52,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:52:52,418 INFO L225 Difference]: With dead ends: 493 [2024-11-23 23:52:52,418 INFO L226 Difference]: Without dead ends: 291 [2024-11-23 23:52:52,420 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:52:52,420 INFO L435 NwaCegarLoop]: 193 mSDtfsCounter, 215 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:52:52,421 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 546 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 23:52:52,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-11-23 23:52:52,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 281. [2024-11-23 23:52:52,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 193 states have (on average 1.2227979274611398) internal successors, (236), 196 states have internal predecessors, (236), 54 states have call successors, (54), 30 states have call predecessors, (54), 33 states have return successors, (56), 54 states have call predecessors, (56), 53 states have call successors, (56) [2024-11-23 23:52:52,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 346 transitions. [2024-11-23 23:52:52,457 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 346 transitions. Word has length 188 [2024-11-23 23:52:52,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:52:52,458 INFO L471 AbstractCegarLoop]: Abstraction has 281 states and 346 transitions. [2024-11-23 23:52:52,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2024-11-23 23:52:52,459 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 346 transitions. [2024-11-23 23:52:52,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-11-23 23:52:52,460 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:52:52,461 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:52:52,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-23 23:52:52,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:52:52,661 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:52:52,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:52:52,662 INFO L85 PathProgramCache]: Analyzing trace with hash 123321630, now seen corresponding path program 1 times [2024-11-23 23:52:52,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:52:52,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768246698] [2024-11-23 23:52:52,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:52:52,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:52:58,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:53:01,018 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-23 23:53:01,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:53:01,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768246698] [2024-11-23 23:53:01,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768246698] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:53:01,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15928830] [2024-11-23 23:53:01,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:53:01,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:53:01,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:53:01,021 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:53:01,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-23 23:53:10,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:53:10,184 INFO L256 TraceCheckSpWp]: Trace formula consists of 4659 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-23 23:53:10,193 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:53:10,988 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 15 treesize of output 1 [2024-11-23 23:53:12,634 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-23 23:53:12,635 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:53:12,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15928830] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:53:12,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:53:12,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [7] total 17 [2024-11-23 23:53:12,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761021108] [2024-11-23 23:53:12,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:53:12,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 23:53:12,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:53:12,637 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 23:53:12,637 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2024-11-23 23:53:12,638 INFO L87 Difference]: Start difference. First operand 281 states and 346 transitions. Second operand has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 5 states have call successors, (30), 3 states have call predecessors, (30), 5 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2024-11-23 23:53:17,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:53:17,684 INFO L93 Difference]: Finished difference Result 507 states and 631 transitions. [2024-11-23 23:53:17,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 23:53:17,685 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 5 states have call successors, (30), 3 states have call predecessors, (30), 5 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) Word has length 194 [2024-11-23 23:53:17,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:53:17,688 INFO L225 Difference]: With dead ends: 507 [2024-11-23 23:53:17,688 INFO L226 Difference]: Without dead ends: 303 [2024-11-23 23:53:17,689 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2024-11-23 23:53:17,690 INFO L435 NwaCegarLoop]: 240 mSDtfsCounter, 152 mSDsluCounter, 1565 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 1805 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:53:17,690 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 1805 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-23 23:53:17,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2024-11-23 23:53:17,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 283. [2024-11-23 23:53:17,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 194 states have (on average 1.2216494845360826) internal successors, (237), 198 states have internal predecessors, (237), 54 states have call successors, (54), 30 states have call predecessors, (54), 34 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2024-11-23 23:53:17,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 349 transitions. [2024-11-23 23:53:17,731 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 349 transitions. Word has length 194 [2024-11-23 23:53:17,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:53:17,731 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 349 transitions. [2024-11-23 23:53:17,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 5 states have call successors, (30), 3 states have call predecessors, (30), 5 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2024-11-23 23:53:17,732 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 349 transitions. [2024-11-23 23:53:17,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-11-23 23:53:17,734 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:53:17,734 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:53:17,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-23 23:53:17,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-23 23:53:17,935 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:53:17,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:53:17,936 INFO L85 PathProgramCache]: Analyzing trace with hash -97102823, now seen corresponding path program 1 times [2024-11-23 23:53:17,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:53:17,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985888201] [2024-11-23 23:53:17,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:53:17,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:53:23,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:53:29,949 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-23 23:53:29,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:53:29,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985888201] [2024-11-23 23:53:29,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985888201] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:53:29,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860967231] [2024-11-23 23:53:29,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:53:29,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:53:29,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:53:29,952 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:53:29,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-23 23:53:38,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:53:38,655 INFO L256 TraceCheckSpWp]: Trace formula consists of 4691 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-23 23:53:38,661 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:53:42,231 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 24 treesize of output 9 [2024-11-23 23:53:43,907 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 9 proven. 145 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-11-23 23:53:43,908 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:53:45,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 142 treesize of output 130 [2024-11-23 23:53:48,346 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2024-11-23 23:53:48,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860967231] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:53:48,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:53:48,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 11] total 34 [2024-11-23 23:53:48,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507549244] [2024-11-23 23:53:48,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:53:48,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-23 23:53:48,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:53:48,349 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-23 23:53:48,349 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=1042, Unknown=0, NotChecked=0, Total=1122 [2024-11-23 23:53:48,350 INFO L87 Difference]: Start difference. First operand 283 states and 349 transitions. Second operand has 34 states, 30 states have (on average 6.1) internal successors, (183), 30 states have internal predecessors, (183), 13 states have call successors, (77), 6 states have call predecessors, (77), 9 states have return successors, (71), 13 states have call predecessors, (71), 12 states have call successors, (71) [2024-11-23 23:54:06,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:54:06,830 INFO L93 Difference]: Finished difference Result 553 states and 707 transitions. [2024-11-23 23:54:06,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-23 23:54:06,831 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 30 states have (on average 6.1) internal successors, (183), 30 states have internal predecessors, (183), 13 states have call successors, (77), 6 states have call predecessors, (77), 9 states have return successors, (71), 13 states have call predecessors, (71), 12 states have call successors, (71) Word has length 201 [2024-11-23 23:54:06,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:54:06,834 INFO L225 Difference]: With dead ends: 553 [2024-11-23 23:54:06,834 INFO L226 Difference]: Without dead ends: 354 [2024-11-23 23:54:06,836 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=255, Invalid=3527, Unknown=0, NotChecked=0, Total=3782 [2024-11-23 23:54:06,836 INFO L435 NwaCegarLoop]: 149 mSDtfsCounter, 280 mSDsluCounter, 3494 mSDsCounter, 0 mSdLazyCounter, 1961 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 3643 SdHoareTripleChecker+Invalid, 2095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:54:06,836 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 3643 Invalid, 2095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1961 Invalid, 0 Unknown, 0 Unchecked, 12.5s Time] [2024-11-23 23:54:06,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2024-11-23 23:54:06,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 304. [2024-11-23 23:54:06,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 212 states have (on average 1.2452830188679245) internal successors, (264), 217 states have internal predecessors, (264), 54 states have call successors, (54), 30 states have call predecessors, (54), 37 states have return successors, (62), 56 states have call predecessors, (62), 53 states have call successors, (62) [2024-11-23 23:54:06,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 380 transitions. [2024-11-23 23:54:06,883 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 380 transitions. Word has length 201 [2024-11-23 23:54:06,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:54:06,885 INFO L471 AbstractCegarLoop]: Abstraction has 304 states and 380 transitions. [2024-11-23 23:54:06,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 30 states have (on average 6.1) internal successors, (183), 30 states have internal predecessors, (183), 13 states have call successors, (77), 6 states have call predecessors, (77), 9 states have return successors, (71), 13 states have call predecessors, (71), 12 states have call successors, (71) [2024-11-23 23:54:06,885 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 380 transitions. [2024-11-23 23:54:06,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-23 23:54:06,889 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:54:06,889 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:54:06,921 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-23 23:54:07,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:54:07,090 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:54:07,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:54:07,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1159764231, now seen corresponding path program 1 times [2024-11-23 23:54:07,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:54:07,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429844213] [2024-11-23 23:54:07,091 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:54:07,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:54:12,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:54:14,092 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2024-11-23 23:54:14,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:54:14,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429844213] [2024-11-23 23:54:14,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429844213] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:54:14,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850779200] [2024-11-23 23:54:14,093 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:54:14,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:54:14,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:54:14,095 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:54:14,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-23 23:54:22,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:54:22,407 INFO L256 TraceCheckSpWp]: Trace formula consists of 4694 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-23 23:54:22,411 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:54:22,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-23 23:54:24,331 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-23 23:54:24,331 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:54:24,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850779200] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:54:24,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:54:24,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2024-11-23 23:54:24,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234110907] [2024-11-23 23:54:24,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:54:24,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 23:54:24,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:54:24,332 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 23:54:24,333 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-23 23:54:24,333 INFO L87 Difference]: Start difference. First operand 304 states and 380 transitions. Second operand has 11 states, 9 states have (on average 11.333333333333334) internal successors, (102), 10 states have internal predecessors, (102), 5 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) [2024-11-23 23:54:28,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:54:32,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:54:36,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:54:40,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:54:49,674 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:54:53,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:54:54,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:54:54,362 INFO L93 Difference]: Finished difference Result 553 states and 705 transitions. [2024-11-23 23:54:54,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 23:54:54,363 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 11.333333333333334) internal successors, (102), 10 states have internal predecessors, (102), 5 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) Word has length 202 [2024-11-23 23:54:54,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:54:54,366 INFO L225 Difference]: With dead ends: 553 [2024-11-23 23:54:54,366 INFO L226 Difference]: Without dead ends: 333 [2024-11-23 23:54:54,366 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2024-11-23 23:54:54,367 INFO L435 NwaCegarLoop]: 259 mSDtfsCounter, 343 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 98 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 1293 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:54:54,367 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 1293 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 550 Invalid, 6 Unknown, 0 Unchecked, 28.7s Time] [2024-11-23 23:54:54,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2024-11-23 23:54:54,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 306. [2024-11-23 23:54:54,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 213 states have (on average 1.244131455399061) internal successors, (265), 218 states have internal predecessors, (265), 55 states have call successors, (55), 30 states have call predecessors, (55), 37 states have return successors, (63), 57 states have call predecessors, (63), 54 states have call successors, (63) [2024-11-23 23:54:54,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 383 transitions. [2024-11-23 23:54:54,405 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 383 transitions. Word has length 202 [2024-11-23 23:54:54,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:54:54,405 INFO L471 AbstractCegarLoop]: Abstraction has 306 states and 383 transitions. [2024-11-23 23:54:54,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 11.333333333333334) internal successors, (102), 10 states have internal predecessors, (102), 5 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) [2024-11-23 23:54:54,406 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 383 transitions. [2024-11-23 23:54:54,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-23 23:54:54,407 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:54:54,407 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:54:54,439 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-23 23:54:54,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:54:54,608 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:54:54,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:54:54,609 INFO L85 PathProgramCache]: Analyzing trace with hash -123335979, now seen corresponding path program 1 times [2024-11-23 23:54:54,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:54:54,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504503311] [2024-11-23 23:54:54,609 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:54:54,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:55:00,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:55:02,487 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2024-11-23 23:55:02,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:55:02,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504503311] [2024-11-23 23:55:02,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504503311] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:55:02,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796501534] [2024-11-23 23:55:02,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:55:02,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:55:02,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:55:02,490 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:55:02,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-23 23:55:11,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:55:11,607 INFO L256 TraceCheckSpWp]: Trace formula consists of 4723 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-23 23:55:11,614 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:55:12,344 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 15 treesize of output 1 [2024-11-23 23:55:13,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-23 23:55:13,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-23 23:55:16,855 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-23 23:55:16,856 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:55:16,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796501534] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:55:16,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:55:16,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [7] total 24 [2024-11-23 23:55:16,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062643483] [2024-11-23 23:55:16,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:55:16,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-23 23:55:16,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:55:16,857 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-23 23:55:16,858 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2024-11-23 23:55:16,858 INFO L87 Difference]: Start difference. First operand 306 states and 383 transitions. Second operand has 19 states, 15 states have (on average 7.533333333333333) internal successors, (113), 17 states have internal predecessors, (113), 9 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (31), 8 states have call predecessors, (31), 9 states have call successors, (31) [2024-11-23 23:55:21,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:55:33,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:55:37,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:55:40,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:55:40,872 INFO L93 Difference]: Finished difference Result 584 states and 747 transitions. [2024-11-23 23:55:40,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-23 23:55:40,873 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 7.533333333333333) internal successors, (113), 17 states have internal predecessors, (113), 9 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (31), 8 states have call predecessors, (31), 9 states have call successors, (31) Word has length 208 [2024-11-23 23:55:40,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:55:40,876 INFO L225 Difference]: With dead ends: 584 [2024-11-23 23:55:40,876 INFO L226 Difference]: Without dead ends: 362 [2024-11-23 23:55:40,878 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 189 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=104, Invalid=708, Unknown=0, NotChecked=0, Total=812 [2024-11-23 23:55:40,878 INFO L435 NwaCegarLoop]: 270 mSDtfsCounter, 315 mSDsluCounter, 2077 mSDsCounter, 0 mSdLazyCounter, 1198 mSolverCounterSat, 69 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 2347 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1198 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:55:40,878 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 2347 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1198 Invalid, 3 Unknown, 0 Unchecked, 23.0s Time] [2024-11-23 23:55:40,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2024-11-23 23:55:40,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 308. [2024-11-23 23:55:40,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 214 states have (on average 1.2429906542056075) internal successors, (266), 220 states have internal predecessors, (266), 55 states have call successors, (55), 30 states have call predecessors, (55), 38 states have return successors, (65), 57 states have call predecessors, (65), 54 states have call successors, (65) [2024-11-23 23:55:40,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 386 transitions. [2024-11-23 23:55:40,922 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 386 transitions. Word has length 208 [2024-11-23 23:55:40,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:55:40,922 INFO L471 AbstractCegarLoop]: Abstraction has 308 states and 386 transitions. [2024-11-23 23:55:40,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 7.533333333333333) internal successors, (113), 17 states have internal predecessors, (113), 9 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (31), 8 states have call predecessors, (31), 9 states have call successors, (31) [2024-11-23 23:55:40,923 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 386 transitions. [2024-11-23 23:55:40,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-23 23:55:40,925 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:55:40,925 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:55:40,958 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-23 23:55:41,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-23 23:55:41,126 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:55:41,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:55:41,126 INFO L85 PathProgramCache]: Analyzing trace with hash -123157040, now seen corresponding path program 1 times [2024-11-23 23:55:41,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:55:41,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777804122] [2024-11-23 23:55:41,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:55:41,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:55:45,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:55:51,656 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 18 proven. 10 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2024-11-23 23:55:51,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:55:51,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777804122] [2024-11-23 23:55:51,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777804122] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:55:51,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198339789] [2024-11-23 23:55:51,657 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:55:51,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:55:51,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:55:51,659 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:55:51,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-23 23:56:00,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:00,439 INFO L256 TraceCheckSpWp]: Trace formula consists of 4755 conjuncts, 106 conjuncts are in the unsatisfiable core [2024-11-23 23:56:00,445 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:56:00,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-23 23:56:00,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-23 23:56:11,087 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 197 proven. 10 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-23 23:56:11,087 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:56:18,722 INFO L349 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2024-11-23 23:56:18,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 31 [2024-11-23 23:56:20,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198339789] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:56:20,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:56:20,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 22] total 33 [2024-11-23 23:56:20,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053432191] [2024-11-23 23:56:20,817 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 23:56:20,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-23 23:56:20,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:56:20,819 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-23 23:56:20,820 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1666, Unknown=0, NotChecked=0, Total=1806 [2024-11-23 23:56:20,820 INFO L87 Difference]: Start difference. First operand 308 states and 386 transitions. Second operand has 33 states, 27 states have (on average 5.592592592592593) internal successors, (151), 30 states have internal predecessors, (151), 14 states have call successors, (57), 5 states have call predecessors, (57), 11 states have return successors, (54), 13 states have call predecessors, (54), 14 states have call successors, (54) [2024-11-23 23:56:25,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:56:46,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:56:50,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:57:04,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:57:04,657 INFO L93 Difference]: Finished difference Result 697 states and 921 transitions. [2024-11-23 23:57:04,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-23 23:57:04,658 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 27 states have (on average 5.592592592592593) internal successors, (151), 30 states have internal predecessors, (151), 14 states have call successors, (57), 5 states have call predecessors, (57), 11 states have return successors, (54), 13 states have call predecessors, (54), 14 states have call successors, (54) Word has length 215 [2024-11-23 23:57:04,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:57:04,660 INFO L225 Difference]: With dead ends: 697 [2024-11-23 23:57:04,660 INFO L226 Difference]: Without dead ends: 529 [2024-11-23 23:57:04,662 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 295 SyntacticMatches, 6 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1246 ImplicationChecksByTransitivity, 22.4s TimeCoverageRelationStatistics Valid=462, Invalid=5390, Unknown=0, NotChecked=0, Total=5852 [2024-11-23 23:57:04,663 INFO L435 NwaCegarLoop]: 282 mSDtfsCounter, 360 mSDsluCounter, 5311 mSDsCounter, 0 mSdLazyCounter, 3174 mSolverCounterSat, 92 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 5593 SdHoareTripleChecker+Invalid, 3269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 3174 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:57:04,663 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 5593 Invalid, 3269 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [92 Valid, 3174 Invalid, 3 Unknown, 0 Unchecked, 34.9s Time] [2024-11-23 23:57:04,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2024-11-23 23:57:04,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 441. [2024-11-23 23:57:04,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 314 states have (on average 1.2515923566878981) internal successors, (393), 320 states have internal predecessors, (393), 73 states have call successors, (73), 42 states have call predecessors, (73), 53 states have return successors, (94), 78 states have call predecessors, (94), 71 states have call successors, (94) [2024-11-23 23:57:04,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 560 transitions. [2024-11-23 23:57:04,729 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 560 transitions. Word has length 215 [2024-11-23 23:57:04,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:57:04,730 INFO L471 AbstractCegarLoop]: Abstraction has 441 states and 560 transitions. [2024-11-23 23:57:04,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 27 states have (on average 5.592592592592593) internal successors, (151), 30 states have internal predecessors, (151), 14 states have call successors, (57), 5 states have call predecessors, (57), 11 states have return successors, (54), 13 states have call predecessors, (54), 14 states have call successors, (54) [2024-11-23 23:57:04,730 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 560 transitions. [2024-11-23 23:57:04,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-23 23:57:04,732 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:57:04,732 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:57:04,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-23 23:57:04,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-23 23:57:04,933 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:57:04,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:57:04,933 INFO L85 PathProgramCache]: Analyzing trace with hash -138675758, now seen corresponding path program 2 times [2024-11-23 23:57:04,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:57:04,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795849523] [2024-11-23 23:57:04,934 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:57:04,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:57:10,072 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 23:57:10,072 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:57:12,413 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 17 proven. 9 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2024-11-23 23:57:12,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:57:12,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795849523] [2024-11-23 23:57:12,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795849523] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:57:12,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749181306] [2024-11-23 23:57:12,414 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:57:12,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:57:12,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:57:12,416 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:57:12,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f180dfe7-abd8-4924-83cd-312b3f962dd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process