./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_iter_done_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_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/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_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/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_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/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 6d54635a45b4bea3ce8bb2da849d6298e1094d0c6d7d45bb3baae6f41da1bbe7 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:51:55,144 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:51:55,259 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-23 23:51:55,266 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:51:55,266 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:51:55,296 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:51:55,297 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:51:55,297 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:51:55,298 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:51:55,298 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:51:55,298 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:51:55,298 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:51:55,299 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:51:55,299 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:51:55,299 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:51:55,300 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:51:55,300 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:51:55,300 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:51:55,300 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:51:55,301 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:51:55,301 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:51:55,301 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:51:55,301 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:51:55,301 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:51:55,301 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:51:55,302 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:51:55,302 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:51:55,302 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:51:55,302 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:51:55,302 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:51:55,303 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:51:55,303 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:51:55,303 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:51:55,303 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:51:55,303 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:51:55,303 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:51:55,304 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:51:55,304 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:51:55,304 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:51:55,304 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:51:55,304 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:51:55,304 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:51:55,305 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:51:55,305 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:51:55,305 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:51:55,305 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_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/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 -> 6d54635a45b4bea3ce8bb2da849d6298e1094d0c6d7d45bb3baae6f41da1bbe7 [2024-11-23 23:51:55,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:51:55,687 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:51:55,689 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:51:55,691 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:51:55,691 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:51:55,693 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i [2024-11-23 23:51:59,423 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/data/9dc9cd80e/ca54e63f93354c0f95111d896b8b87d4/FLAG89eb66f2a [2024-11-23 23:52:00,197 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:52:00,197 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i [2024-11-23 23:52:00,254 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/data/9dc9cd80e/ca54e63f93354c0f95111d896b8b87d4/FLAG89eb66f2a [2024-11-23 23:52:00,283 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/data/9dc9cd80e/ca54e63f93354c0f95111d896b8b87d4 [2024-11-23 23:52:00,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:52:00,289 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:52:00,291 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:52:00,291 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:52:00,297 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:52:00,298 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:52:00" (1/1) ... [2024-11-23 23:52:00,299 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 11:52:00, skipping insertion in model container [2024-11-23 23:52:00,299 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:52:00" (1/1) ... [2024-11-23 23:52:00,439 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:52:00,812 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_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i[4492,4505] [2024-11-23 23:52:00,821 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_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i[4552,4565] [2024-11-23 23:52:02,256 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:02,257 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:02,258 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:02,259 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:02,260 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:02,282 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:02,283 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:02,286 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:02,287 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:02,289 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:02,291 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:02,292 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:02,292 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:03,872 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:03,873 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:03,923 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:03,925 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:03,933 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:03,934 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:03,959 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:03,962 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:03,963 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:03,964 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:03,964 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:03,965 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:03,965 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:04,012 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_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i[228041,228054] [2024-11-23 23:52:04,013 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:52:04,069 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:52:04,088 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_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i[4492,4505] [2024-11-23 23:52:04,093 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_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i[4552,4565] [2024-11-23 23:52:04,170 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:04,171 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:04,171 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:04,172 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:04,173 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:04,188 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:04,189 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:04,191 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:04,191 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:04,196 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:04,197 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:04,200 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:04,200 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:04,423 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7558-7569] [2024-11-23 23:52:04,587 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:04,588 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:04,601 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:04,603 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:04,607 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:04,608 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:04,625 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:04,628 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:04,628 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:04,629 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:04,631 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:04,632 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:04,632 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:52:04,669 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i[228041,228054] [2024-11-23 23:52:04,670 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:52:05,012 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:52:05,014 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:52:05 WrapperNode [2024-11-23 23:52:05,015 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:52:05,017 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:52:05,018 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:52:05,018 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:52:05,034 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:52:05" (1/1) ... [2024-11-23 23:52:05,226 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:52:05" (1/1) ... [2024-11-23 23:52:05,297 INFO L138 Inliner]: procedures = 763, calls = 2449, calls flagged for inlining = 68, calls inlined = 11, statements flattened = 644 [2024-11-23 23:52:05,298 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:52:05,298 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:52:05,299 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:52:05,299 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:52:05,314 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:52:05" (1/1) ... [2024-11-23 23:52:05,314 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:52:05" (1/1) ... [2024-11-23 23:52:05,346 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:52:05" (1/1) ... [2024-11-23 23:52:05,494 INFO L175 MemorySlicer]: Split 318 memory accesses to 9 slices as follows [238, 2, 3, 6, 36, 19, 2, 7, 5]. 75 percent of accesses are in the largest equivalence class. The 22 initializations are split as follows [6, 2, 0, 0, 9, 0, 0, 0, 5]. The 239 writes are split as follows [232, 0, 1, 2, 1, 1, 1, 1, 0]. [2024-11-23 23:52:05,494 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:52:05" (1/1) ... [2024-11-23 23:52:05,495 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:52:05" (1/1) ... [2024-11-23 23:52:05,572 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:52:05" (1/1) ... [2024-11-23 23:52:05,578 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:52:05" (1/1) ... [2024-11-23 23:52:05,586 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:52:05" (1/1) ... [2024-11-23 23:52:05,613 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:52:05" (1/1) ... [2024-11-23 23:52:05,621 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:52:05" (1/1) ... [2024-11-23 23:52:05,646 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:52:05,651 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:52:05,651 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:52:05,651 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:52:05,653 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:52:05" (1/1) ... [2024-11-23 23:52:05,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:52:05,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:52:05,706 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:52:05,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:52:05,749 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-11-23 23:52:05,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-11-23 23:52:05,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-11-23 23:52:05,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-11-23 23:52:05,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2024-11-23 23:52:05,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2024-11-23 23:52:05,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2024-11-23 23:52:05,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2024-11-23 23:52:05,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2024-11-23 23:52:05,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-23 23:52:05,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-23 23:52:05,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-23 23:52:05,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-23 23:52:05,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-23 23:52:05,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-23 23:52:05,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-23 23:52:05,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-11-23 23:52:05,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2024-11-23 23:52:05,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2024-11-23 23:52:05,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 23:52:05,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 23:52:05,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-23 23:52:05,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-23 23:52:05,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-23 23:52:05,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-23 23:52:05,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-23 23:52:05,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-23 23:52:05,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-23 23:52:05,752 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_done [2024-11-23 23:52:05,752 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_done [2024-11-23 23:52:05,752 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-11-23 23:52:05,752 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-11-23 23:52:05,753 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-23 23:52:05,753 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-23 23:52:05,753 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2024-11-23 23:52:05,753 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2024-11-23 23:52:05,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-23 23:52:05,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:52:05,753 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2024-11-23 23:52:05,753 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2024-11-23 23:52:05,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-23 23:52:05,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-23 23:52:05,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-23 23:52:05,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-23 23:52:05,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-23 23:52:05,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-23 23:52:05,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-23 23:52:05,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-23 23:52:05,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-11-23 23:52:05,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:52:05,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:52:05,754 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-23 23:52:05,755 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-23 23:52:05,755 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2024-11-23 23:52:05,755 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2024-11-23 23:52:05,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-23 23:52:05,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-23 23:52:05,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-23 23:52:05,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-23 23:52:05,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-23 23:52:05,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-23 23:52:05,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-11-23 23:52:05,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2024-11-23 23:52:05,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#8 [2024-11-23 23:52:05,756 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 23:52:05,756 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 23:52:05,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-23 23:52:05,756 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_is_valid [2024-11-23 23:52:05,756 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_is_valid [2024-11-23 23:52:05,756 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2024-11-23 23:52:05,756 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2024-11-23 23:52:05,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-23 23:52:05,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-23 23:52:05,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-23 23:52:05,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-23 23:52:05,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-23 23:52:05,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-23 23:52:05,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-23 23:52:05,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-23 23:52:05,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-23 23:52:05,757 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2024-11-23 23:52:05,757 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2024-11-23 23:52:05,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-23 23:52:05,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-23 23:52:05,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-23 23:52:05,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-23 23:52:05,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-23 23:52:05,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-23 23:52:05,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-23 23:52:05,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-23 23:52:05,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2024-11-23 23:52:05,758 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2024-11-23 23:52:05,758 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2024-11-23 23:52:05,758 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2024-11-23 23:52:05,758 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2024-11-23 23:52:05,759 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-23 23:52:05,759 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-23 23:52:05,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 23:52:05,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 23:52:05,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-23 23:52:05,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-23 23:52:05,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-23 23:52:05,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-23 23:52:05,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-23 23:52:05,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-23 23:52:05,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-23 23:52:05,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:52:05,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 23:52:05,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 23:52:05,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-23 23:52:05,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-23 23:52:05,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-23 23:52:05,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-23 23:52:05,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-23 23:52:05,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-23 23:52:05,760 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2024-11-23 23:52:05,760 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2024-11-23 23:52:06,382 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:52:06,385 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:52:13,726 INFO L? ?]: Removed 154 outVars from TransFormulas that were not future-live. [2024-11-23 23:52:13,726 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:52:13,746 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:52:13,747 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-23 23:52:13,750 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:52:13 BoogieIcfgContainer [2024-11-23 23:52:13,750 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:52:13,753 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:52:13,754 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:52:13,760 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:52:13,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:52:00" (1/3) ... [2024-11-23 23:52:13,763 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@784e3673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:52:13, skipping insertion in model container [2024-11-23 23:52:13,763 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:52:05" (2/3) ... [2024-11-23 23:52:13,763 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@784e3673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:52:13, skipping insertion in model container [2024-11-23 23:52:13,763 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:52:13" (3/3) ... [2024-11-23 23:52:13,765 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_hash_iter_done_harness.i [2024-11-23 23:52:13,791 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:52:13,794 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_hash_iter_done_harness.i that has 16 procedures, 163 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-23 23:52:13,886 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:52:13,905 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;@6c6b54ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:52:13,905 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 23:52:13,912 INFO L276 IsEmpty]: Start isEmpty. Operand has 163 states, 106 states have (on average 1.2452830188679245) internal successors, (132), 107 states have internal predecessors, (132), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-23 23:52:13,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-23 23:52:13,930 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:52:13,932 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:52:13,932 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:52:13,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:52:13,939 INFO L85 PathProgramCache]: Analyzing trace with hash 989145246, now seen corresponding path program 1 times [2024-11-23 23:52:13,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:52:13,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166356475] [2024-11-23 23:52:13,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:52:13,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:52:24,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:52:25,172 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2024-11-23 23:52:25,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:52:25,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166356475] [2024-11-23 23:52:25,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166356475] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:52:25,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325919517] [2024-11-23 23:52:25,175 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:52:25,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:52:25,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:52:25,178 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:52:25,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:52:34,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:52:34,799 INFO L256 TraceCheckSpWp]: Trace formula consists of 4443 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 23:52:34,812 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:52:34,841 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2024-11-23 23:52:34,842 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:52:34,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325919517] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:52:34,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:52:34,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-23 23:52:34,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378097453] [2024-11-23 23:52:34,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:52:34,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 23:52:34,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:52:34,876 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 23:52:34,877 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:52:34,880 INFO L87 Difference]: Start difference. First operand has 163 states, 106 states have (on average 1.2452830188679245) internal successors, (132), 107 states have internal predecessors, (132), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) 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, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 23:52:34,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:52:34,933 INFO L93 Difference]: Finished difference Result 318 states and 446 transitions. [2024-11-23 23:52:34,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 23:52:34,935 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, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 142 [2024-11-23 23:52:34,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:52:34,946 INFO L225 Difference]: With dead ends: 318 [2024-11-23 23:52:34,947 INFO L226 Difference]: Without dead ends: 157 [2024-11-23 23:52:34,952 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 143 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 23:52:34,956 INFO L435 NwaCegarLoop]: 209 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, 209 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 23:52:34,957 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:52:34,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-23 23:52:35,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2024-11-23 23:52:35,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 101 states have (on average 1.2277227722772277) internal successors, (124), 102 states have internal predecessors, (124), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-23 23:52:35,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 203 transitions. [2024-11-23 23:52:35,042 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 203 transitions. Word has length 142 [2024-11-23 23:52:35,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:52:35,043 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 203 transitions. [2024-11-23 23:52:35,043 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, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 23:52:35,044 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 203 transitions. [2024-11-23 23:52:35,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-23 23:52:35,053 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:52:35,053 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:52:35,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 23:52:35,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-23 23:52:35,254 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:52:35,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:52:35,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1365154082, now seen corresponding path program 1 times [2024-11-23 23:52:35,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:52:35,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047015663] [2024-11-23 23:52:35,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:52:35,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:52:42,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:52:44,466 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-23 23:52:44,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:52:44,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047015663] [2024-11-23 23:52:44,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047015663] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:52:44,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346942174] [2024-11-23 23:52:44,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:52:44,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:52:44,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:52:44,473 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:52:44,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 23:52:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:52:53,242 INFO L256 TraceCheckSpWp]: Trace formula consists of 4443 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 23:52:53,256 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:52:54,571 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 115 proven. 20 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-23 23:52:54,572 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:52:56,438 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-11-23 23:52:56,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346942174] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:52:56,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:52:56,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 12 [2024-11-23 23:52:56,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865652206] [2024-11-23 23:52:56,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:52:56,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 23:52:56,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:52:56,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 23:52:56,442 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:52:56,443 INFO L87 Difference]: Start difference. First operand 157 states and 203 transitions. Second operand has 12 states, 12 states have (on average 11.0) internal successors, (132), 12 states have internal predecessors, (132), 6 states have call successors, (55), 3 states have call predecessors, (55), 5 states have return successors, (54), 7 states have call predecessors, (54), 6 states have call successors, (54) [2024-11-23 23:52:59,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:52:59,102 INFO L93 Difference]: Finished difference Result 313 states and 410 transitions. [2024-11-23 23:52:59,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 23:52:59,105 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 11.0) internal successors, (132), 12 states have internal predecessors, (132), 6 states have call successors, (55), 3 states have call predecessors, (55), 5 states have return successors, (54), 7 states have call predecessors, (54), 6 states have call successors, (54) Word has length 142 [2024-11-23 23:52:59,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:52:59,111 INFO L225 Difference]: With dead ends: 313 [2024-11-23 23:52:59,112 INFO L226 Difference]: Without dead ends: 168 [2024-11-23 23:52:59,113 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 277 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2024-11-23 23:52:59,114 INFO L435 NwaCegarLoop]: 166 mSDtfsCounter, 181 mSDsluCounter, 1109 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 1275 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:52:59,115 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 1275 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-23 23:52:59,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-23 23:52:59,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 164. [2024-11-23 23:52:59,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 106 states have (on average 1.2169811320754718) internal successors, (129), 108 states have internal predecessors, (129), 40 states have call successors, (40), 15 states have call predecessors, (40), 17 states have return successors, (42), 40 states have call predecessors, (42), 39 states have call successors, (42) [2024-11-23 23:52:59,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 211 transitions. [2024-11-23 23:52:59,138 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 211 transitions. Word has length 142 [2024-11-23 23:52:59,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:52:59,139 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 211 transitions. [2024-11-23 23:52:59,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.0) internal successors, (132), 12 states have internal predecessors, (132), 6 states have call successors, (55), 3 states have call predecessors, (55), 5 states have return successors, (54), 7 states have call predecessors, (54), 6 states have call successors, (54) [2024-11-23 23:52:59,139 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 211 transitions. [2024-11-23 23:52:59,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-23 23:52:59,142 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:52:59,142 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:52:59,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-23 23:52:59,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:52:59,343 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:52:59,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:52:59,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1821105164, now seen corresponding path program 1 times [2024-11-23 23:52:59,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:52:59,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732981494] [2024-11-23 23:52:59,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:52:59,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:53:05,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:53:09,837 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2024-11-23 23:53:09,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:53:09,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732981494] [2024-11-23 23:53:09,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732981494] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:53:09,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332830229] [2024-11-23 23:53:09,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:53:09,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:53:09,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:53:09,840 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:53:09,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 23:53:17,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:53:17,266 INFO L256 TraceCheckSpWp]: Trace formula consists of 4456 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 23:53:17,272 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:53:19,244 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 67 proven. 81 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-23 23:53:19,245 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:53:21,947 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2024-11-23 23:53:21,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332830229] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 23:53:21,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:53:21,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10, 8] total 21 [2024-11-23 23:53:21,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365268793] [2024-11-23 23:53:21,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:53:21,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 23:53:21,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:53:21,949 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 23:53:21,950 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2024-11-23 23:53:21,950 INFO L87 Difference]: Start difference. First operand 164 states and 211 transitions. Second operand has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 5 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) [2024-11-23 23:53:24,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:53:24,403 INFO L93 Difference]: Finished difference Result 247 states and 322 transitions. [2024-11-23 23:53:24,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:53:24,404 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 5 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) Word has length 155 [2024-11-23 23:53:24,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:53:24,407 INFO L225 Difference]: With dead ends: 247 [2024-11-23 23:53:24,408 INFO L226 Difference]: Without dead ends: 166 [2024-11-23 23:53:24,412 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 300 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=72, Invalid=578, Unknown=0, NotChecked=0, Total=650 [2024-11-23 23:53:24,415 INFO L435 NwaCegarLoop]: 157 mSDtfsCounter, 215 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:53:24,416 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 899 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-23 23:53:24,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-23 23:53:24,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 162. [2024-11-23 23:53:24,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 105 states have (on average 1.2095238095238094) internal successors, (127), 106 states have internal predecessors, (127), 40 states have call successors, (40), 15 states have call predecessors, (40), 16 states have return successors, (40), 40 states have call predecessors, (40), 39 states have call successors, (40) [2024-11-23 23:53:24,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 207 transitions. [2024-11-23 23:53:24,453 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 207 transitions. Word has length 155 [2024-11-23 23:53:24,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:53:24,454 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 207 transitions. [2024-11-23 23:53:24,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 5 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) [2024-11-23 23:53:24,455 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 207 transitions. [2024-11-23 23:53:24,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-23 23:53:24,458 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:53:24,458 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:53:24,475 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 23:53:24,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:53:24,659 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:53:24,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:53:24,659 INFO L85 PathProgramCache]: Analyzing trace with hash -2105315130, now seen corresponding path program 1 times [2024-11-23 23:53:24,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:53:24,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085736530] [2024-11-23 23:53:24,660 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:53:24,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:53:31,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:53:36,377 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2024-11-23 23:53:36,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:53:36,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085736530] [2024-11-23 23:53:36,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085736530] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:53:36,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:53:36,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 23:53:36,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034630612] [2024-11-23 23:53:36,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:53:36,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 23:53:36,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:53:36,380 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 23:53:36,380 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:53:36,380 INFO L87 Difference]: Start difference. First operand 162 states and 207 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2024-11-23 23:53:37,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:53:37,953 INFO L93 Difference]: Finished difference Result 308 states and 396 transitions. [2024-11-23 23:53:37,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 23:53:37,954 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 156 [2024-11-23 23:53:37,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:53:37,957 INFO L225 Difference]: With dead ends: 308 [2024-11-23 23:53:37,957 INFO L226 Difference]: Without dead ends: 170 [2024-11-23 23:53:37,958 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:53:37,964 INFO L435 NwaCegarLoop]: 191 mSDtfsCounter, 27 mSDsluCounter, 996 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:53:37,964 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 1187 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-23 23:53:37,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-23 23:53:37,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 167. [2024-11-23 23:53:37,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 109 states have (on average 1.2110091743119267) internal successors, (132), 111 states have internal predecessors, (132), 40 states have call successors, (40), 15 states have call predecessors, (40), 17 states have return successors, (41), 40 states have call predecessors, (41), 39 states have call successors, (41) [2024-11-23 23:53:37,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 213 transitions. [2024-11-23 23:53:37,998 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 213 transitions. Word has length 156 [2024-11-23 23:53:37,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:53:37,999 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 213 transitions. [2024-11-23 23:53:37,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2024-11-23 23:53:37,999 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 213 transitions. [2024-11-23 23:53:38,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-23 23:53:38,002 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:53:38,002 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:53:38,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 23:53:38,003 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:53:38,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:53:38,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1418918600, now seen corresponding path program 1 times [2024-11-23 23:53:38,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:53:38,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407617321] [2024-11-23 23:53:38,004 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:53:38,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:53:43,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:53:45,371 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2024-11-23 23:53:45,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:53:45,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407617321] [2024-11-23 23:53:45,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407617321] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:53:45,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:53:45,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:53:45,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558247935] [2024-11-23 23:53:45,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:53:45,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:53:45,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:53:45,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:53:45,376 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:53:45,376 INFO L87 Difference]: Start difference. First operand 167 states and 213 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2024-11-23 23:53:45,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:53:45,600 INFO L93 Difference]: Finished difference Result 315 states and 403 transitions. [2024-11-23 23:53:45,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:53:45,601 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 156 [2024-11-23 23:53:45,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:53:45,604 INFO L225 Difference]: With dead ends: 315 [2024-11-23 23:53:45,604 INFO L226 Difference]: Without dead ends: 172 [2024-11-23 23:53:45,605 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:53:45,606 INFO L435 NwaCegarLoop]: 205 mSDtfsCounter, 22 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:53:45,606 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 558 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:53:45,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-11-23 23:53:45,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 169. [2024-11-23 23:53:45,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 110 states have (on average 1.209090909090909) internal successors, (133), 112 states have internal predecessors, (133), 41 states have call successors, (41), 15 states have call predecessors, (41), 17 states have return successors, (42), 41 states have call predecessors, (42), 40 states have call successors, (42) [2024-11-23 23:53:45,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 216 transitions. [2024-11-23 23:53:45,628 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 216 transitions. Word has length 156 [2024-11-23 23:53:45,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:53:45,628 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 216 transitions. [2024-11-23 23:53:45,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2024-11-23 23:53:45,629 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 216 transitions. [2024-11-23 23:53:45,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-23 23:53:45,631 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:53:45,631 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:53:45,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 23:53:45,632 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:53:45,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:53:45,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1963552108, now seen corresponding path program 1 times [2024-11-23 23:53:45,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:53:45,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825023722] [2024-11-23 23:53:45,633 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:53:45,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:53:51,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:53:54,192 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2024-11-23 23:53:54,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:53:54,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825023722] [2024-11-23 23:53:54,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825023722] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:53:54,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:53:54,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:53:54,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201940605] [2024-11-23 23:53:54,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:53:54,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:53:54,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:53:54,195 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:53:54,195 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:53:54,196 INFO L87 Difference]: Start difference. First operand 169 states and 216 transitions. Second operand has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) [2024-11-23 23:53:54,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:53:54,628 INFO L93 Difference]: Finished difference Result 317 states and 414 transitions. [2024-11-23 23:53:54,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:53:54,630 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) Word has length 162 [2024-11-23 23:53:54,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:53:54,633 INFO L225 Difference]: With dead ends: 317 [2024-11-23 23:53:54,634 INFO L226 Difference]: Without dead ends: 170 [2024-11-23 23:53:54,635 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:53:54,636 INFO L435 NwaCegarLoop]: 196 mSDtfsCounter, 3 mSDsluCounter, 953 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:53:54,636 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1149 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 23:53:54,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-23 23:53:54,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 169. [2024-11-23 23:53:54,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 110 states have (on average 1.2) internal successors, (132), 112 states have internal predecessors, (132), 41 states have call successors, (41), 15 states have call predecessors, (41), 17 states have return successors, (42), 41 states have call predecessors, (42), 40 states have call successors, (42) [2024-11-23 23:53:54,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 215 transitions. [2024-11-23 23:53:54,671 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 215 transitions. Word has length 162 [2024-11-23 23:53:54,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:53:54,672 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 215 transitions. [2024-11-23 23:53:54,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) [2024-11-23 23:53:54,673 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 215 transitions. [2024-11-23 23:53:54,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-23 23:53:54,676 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:53:54,676 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:53:54,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 23:53:54,677 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:53:54,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:53:54,677 INFO L85 PathProgramCache]: Analyzing trace with hash 194666249, now seen corresponding path program 1 times [2024-11-23 23:53:54,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:53:54,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652865969] [2024-11-23 23:53:54,678 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:53:54,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:54:00,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:54:03,896 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2024-11-23 23:54:03,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:54:03,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652865969] [2024-11-23 23:54:03,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652865969] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:54:03,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173983098] [2024-11-23 23:54:03,897 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:54:03,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:54:03,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:54:03,900 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:54:03,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 23:54:11,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:54:11,892 INFO L256 TraceCheckSpWp]: Trace formula consists of 4517 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-23 23:54:11,899 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:54:12,880 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-11-23 23:54:12,881 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:54:14,587 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2024-11-23 23:54:14,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173983098] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 23:54:14,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:54:14,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10, 8] total 18 [2024-11-23 23:54:14,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527276860] [2024-11-23 23:54:14,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:54:14,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:54:14,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:54:14,589 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:54:14,591 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2024-11-23 23:54:14,592 INFO L87 Difference]: Start difference. First operand 169 states and 215 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 23:54:14,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:54:14,906 INFO L93 Difference]: Finished difference Result 177 states and 223 transitions. [2024-11-23 23:54:14,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:54:14,907 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 169 [2024-11-23 23:54:14,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:54:14,908 INFO L225 Difference]: With dead ends: 177 [2024-11-23 23:54:14,908 INFO L226 Difference]: Without dead ends: 175 [2024-11-23 23:54:14,909 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2024-11-23 23:54:14,909 INFO L435 NwaCegarLoop]: 198 mSDtfsCounter, 3 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 781 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 23:54:14,910 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 781 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:54:14,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-11-23 23:54:14,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 174. [2024-11-23 23:54:14,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 113 states have (on average 1.1946902654867257) internal successors, (135), 116 states have internal predecessors, (135), 42 states have call successors, (42), 16 states have call predecessors, (42), 18 states have return successors, (43), 41 states have call predecessors, (43), 41 states have call successors, (43) [2024-11-23 23:54:14,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 220 transitions. [2024-11-23 23:54:14,933 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 220 transitions. Word has length 169 [2024-11-23 23:54:14,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:54:14,933 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 220 transitions. [2024-11-23 23:54:14,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 23:54:14,934 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 220 transitions. [2024-11-23 23:54:14,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-23 23:54:14,936 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:54:14,937 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:54:14,958 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 23:54:15,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:54:15,137 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:54:15,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:54:15,138 INFO L85 PathProgramCache]: Analyzing trace with hash 196513291, now seen corresponding path program 1 times [2024-11-23 23:54:15,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:54:15,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522939164] [2024-11-23 23:54:15,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:54:15,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:54:20,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:54:21,979 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2024-11-23 23:54:21,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:54:21,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522939164] [2024-11-23 23:54:21,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522939164] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:54:21,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:54:21,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:54:21,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375799344] [2024-11-23 23:54:21,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:54:21,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:54:21,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:54:21,981 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:54:21,981 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:54:21,981 INFO L87 Difference]: Start difference. First operand 174 states and 220 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-23 23:54:22,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:54:22,388 INFO L93 Difference]: Finished difference Result 261 states and 335 transitions. [2024-11-23 23:54:22,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:54:22,389 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 169 [2024-11-23 23:54:22,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:54:22,391 INFO L225 Difference]: With dead ends: 261 [2024-11-23 23:54:22,391 INFO L226 Difference]: Without dead ends: 187 [2024-11-23 23:54:22,392 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:54:22,393 INFO L435 NwaCegarLoop]: 208 mSDtfsCounter, 13 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:54:22,393 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 593 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 23:54:22,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-11-23 23:54:22,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 177. [2024-11-23 23:54:22,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 115 states have (on average 1.191304347826087) internal successors, (137), 118 states have internal predecessors, (137), 43 states have call successors, (43), 16 states have call predecessors, (43), 18 states have return successors, (44), 42 states have call predecessors, (44), 42 states have call successors, (44) [2024-11-23 23:54:22,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 224 transitions. [2024-11-23 23:54:22,415 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 224 transitions. Word has length 169 [2024-11-23 23:54:22,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:54:22,416 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 224 transitions. [2024-11-23 23:54:22,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-23 23:54:22,416 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 224 transitions. [2024-11-23 23:54:22,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-23 23:54:22,419 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:54:22,419 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:54:22,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 23:54:22,419 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:54:22,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:54:22,420 INFO L85 PathProgramCache]: Analyzing trace with hash 454678729, now seen corresponding path program 1 times [2024-11-23 23:54:22,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:54:22,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553122285] [2024-11-23 23:54:22,420 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:54:22,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:54:28,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:54:30,854 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2024-11-23 23:54:30,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:54:30,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553122285] [2024-11-23 23:54:30,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553122285] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:54:30,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231059268] [2024-11-23 23:54:30,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:54:30,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:54:30,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:54:30,856 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:54:30,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 23:54:39,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:54:39,261 INFO L256 TraceCheckSpWp]: Trace formula consists of 4523 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-23 23:54:39,270 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:54:41,146 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 39 proven. 9 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2024-11-23 23:54:41,147 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:54:44,119 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-11-23 23:54:44,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231059268] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 23:54:44,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:54:44,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 10] total 23 [2024-11-23 23:54:44,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8462039] [2024-11-23 23:54:44,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:54:44,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 23:54:44,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:54:44,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 23:54:44,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=454, Unknown=0, NotChecked=0, Total=506 [2024-11-23 23:54:44,121 INFO L87 Difference]: Start difference. First operand 177 states and 224 transitions. Second operand has 9 states, 7 states have (on average 9.857142857142858) internal successors, (69), 8 states have internal predecessors, (69), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-23 23:54:46,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:54:46,277 INFO L93 Difference]: Finished difference Result 192 states and 242 transitions. [2024-11-23 23:54:46,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 23:54:46,278 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 9.857142857142858) internal successors, (69), 8 states have internal predecessors, (69), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 169 [2024-11-23 23:54:46,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:54:46,280 INFO L225 Difference]: With dead ends: 192 [2024-11-23 23:54:46,280 INFO L226 Difference]: Without dead ends: 190 [2024-11-23 23:54:46,280 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 324 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2024-11-23 23:54:46,281 INFO L435 NwaCegarLoop]: 187 mSDtfsCounter, 9 mSDsluCounter, 1176 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:54:46,282 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1363 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-23 23:54:46,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-23 23:54:46,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 176. [2024-11-23 23:54:46,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 115 states have (on average 1.191304347826087) internal successors, (137), 117 states have internal predecessors, (137), 42 states have call successors, (42), 16 states have call predecessors, (42), 18 states have return successors, (43), 42 states have call predecessors, (43), 41 states have call successors, (43) [2024-11-23 23:54:46,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 222 transitions. [2024-11-23 23:54:46,300 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 222 transitions. Word has length 169 [2024-11-23 23:54:46,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:54:46,301 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 222 transitions. [2024-11-23 23:54:46,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 9.857142857142858) internal successors, (69), 8 states have internal predecessors, (69), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-23 23:54:46,302 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 222 transitions. [2024-11-23 23:54:46,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-23 23:54:46,304 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:54:46,304 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:54:46,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-23 23:54:46,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:54:46,505 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:54:46,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:54:46,505 INFO L85 PathProgramCache]: Analyzing trace with hash 949272445, now seen corresponding path program 1 times [2024-11-23 23:54:46,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:54:46,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080180279] [2024-11-23 23:54:46,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:54:46,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:54:51,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:54:54,491 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2024-11-23 23:54:54,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:54:54,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080180279] [2024-11-23 23:54:54,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080180279] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:54:54,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458546140] [2024-11-23 23:54:54,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:54:54,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:54:54,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:54:54,493 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:54:54,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 23:55:02,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:55:02,407 INFO L256 TraceCheckSpWp]: Trace formula consists of 4528 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-23 23:55:02,416 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:55:02,994 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 23:55:07,004 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-23 23:55:07,004 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:55:07,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458546140] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:55:07,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:55:07,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2024-11-23 23:55:07,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962841217] [2024-11-23 23:55:07,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:55:07,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 23:55:07,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:55:07,010 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 23:55:07,010 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2024-11-23 23:55:07,011 INFO L87 Difference]: Start difference. First operand 176 states and 222 transitions. Second operand has 11 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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 23:55:11,056 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:55:15,467 WARN L539 Checker$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 23:55:19,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:55:23,670 WARN L539 Checker$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 23:55:28,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:55:28,636 INFO L93 Difference]: Finished difference Result 403 states and 498 transitions. [2024-11-23 23:55:28,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 23:55:28,637 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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 175 [2024-11-23 23:55:28,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:55:28,641 INFO L225 Difference]: With dead ends: 403 [2024-11-23 23:55:28,641 INFO L226 Difference]: Without dead ends: 248 [2024-11-23 23:55:28,643 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 158 SyntacticMatches, 10 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=112, Invalid=644, Unknown=0, NotChecked=0, Total=756 [2024-11-23 23:55:28,643 INFO L435 NwaCegarLoop]: 213 mSDtfsCounter, 280 mSDsluCounter, 1036 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 128 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 1249 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:55:28,644 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 1249 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 587 Invalid, 4 Unknown, 0 Unchecked, 20.4s Time] [2024-11-23 23:55:28,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2024-11-23 23:55:28,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 244. [2024-11-23 23:55:28,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 164 states have (on average 1.1646341463414633) internal successors, (191), 166 states have internal predecessors, (191), 50 states have call successors, (50), 26 states have call predecessors, (50), 29 states have return successors, (52), 51 states have call predecessors, (52), 49 states have call successors, (52) [2024-11-23 23:55:28,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 293 transitions. [2024-11-23 23:55:28,679 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 293 transitions. Word has length 175 [2024-11-23 23:55:28,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:55:28,680 INFO L471 AbstractCegarLoop]: Abstraction has 244 states and 293 transitions. [2024-11-23 23:55:28,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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 23:55:28,680 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 293 transitions. [2024-11-23 23:55:28,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-23 23:55:28,683 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:55:28,684 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:55:28,709 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-23 23:55:28,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-23 23:55:28,884 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:55:28,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:55:28,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1783631367, now seen corresponding path program 1 times [2024-11-23 23:55:28,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:55:28,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360139880] [2024-11-23 23:55:28,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:55:28,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:55:34,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:55:39,688 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2024-11-23 23:55:39,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:55:39,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360139880] [2024-11-23 23:55:39,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360139880] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:55:39,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:55:39,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-23 23:55:39,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71183573] [2024-11-23 23:55:39,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:55:39,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-23 23:55:39,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:55:39,690 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-23 23:55:39,690 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2024-11-23 23:55:39,691 INFO L87 Difference]: Start difference. First operand 244 states and 293 transitions. Second operand has 16 states, 14 states have (on average 5.928571428571429) internal successors, (83), 14 states have internal predecessors, (83), 7 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) [2024-11-23 23:55:45,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:55:45,943 INFO L93 Difference]: Finished difference Result 416 states and 516 transitions. [2024-11-23 23:55:45,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-23 23:55:45,943 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 5.928571428571429) internal successors, (83), 14 states have internal predecessors, (83), 7 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) Word has length 193 [2024-11-23 23:55:45,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:55:45,946 INFO L225 Difference]: With dead ends: 416 [2024-11-23 23:55:45,947 INFO L226 Difference]: Without dead ends: 251 [2024-11-23 23:55:45,948 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2024-11-23 23:55:45,949 INFO L435 NwaCegarLoop]: 170 mSDtfsCounter, 103 mSDsluCounter, 1765 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 1935 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:55:45,949 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 1935 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-11-23 23:55:45,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2024-11-23 23:55:45,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 244. [2024-11-23 23:55:45,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 164 states have (on average 1.1585365853658536) internal successors, (190), 166 states have internal predecessors, (190), 50 states have call successors, (50), 26 states have call predecessors, (50), 29 states have return successors, (52), 51 states have call predecessors, (52), 49 states have call successors, (52) [2024-11-23 23:55:45,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 292 transitions. [2024-11-23 23:55:45,980 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 292 transitions. Word has length 193 [2024-11-23 23:55:45,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:55:45,980 INFO L471 AbstractCegarLoop]: Abstraction has 244 states and 292 transitions. [2024-11-23 23:55:45,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 5.928571428571429) internal successors, (83), 14 states have internal predecessors, (83), 7 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) [2024-11-23 23:55:45,981 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 292 transitions. [2024-11-23 23:55:45,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-23 23:55:45,983 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:55:45,983 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:55:45,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 23:55:45,984 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:55:45,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:55:45,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1444255673, now seen corresponding path program 1 times [2024-11-23 23:55:45,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:55:45,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499399373] [2024-11-23 23:55:45,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:55:45,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:55:52,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:55:53,561 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2024-11-23 23:55:53,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:55:53,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499399373] [2024-11-23 23:55:53,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499399373] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:55:53,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907346306] [2024-11-23 23:55:53,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:55:53,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:55:53,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:55:53,564 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:55:53,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 23:56:01,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:01,195 INFO L256 TraceCheckSpWp]: Trace formula consists of 4572 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-23 23:56:01,199 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:56:05,487 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((aws_hash_iter_is_valid_~iter.offset Int) (aws_hash_iter_is_valid_~iter.base Int)) (not (= (select (select |c_#memory_$Pointer$#4.offset| aws_hash_iter_is_valid_~iter.base) aws_hash_iter_is_valid_~iter.offset) 0))) (exists ((aws_hash_iter_is_valid_~iter.offset Int) (aws_hash_iter_is_valid_~iter.base Int)) (not (= (select (select |c_#memory_$Pointer$#4.base| aws_hash_iter_is_valid_~iter.base) aws_hash_iter_is_valid_~iter.offset) 0)))) is different from true [2024-11-23 23:56:10,280 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-23 23:56:10,280 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:56:10,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907346306] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:56:10,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:56:10,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 10 [2024-11-23 23:56:10,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809795599] [2024-11-23 23:56:10,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:56:10,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:56:10,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:56:10,282 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:56:10,282 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=52, Unknown=2, NotChecked=14, Total=90 [2024-11-23 23:56:10,283 INFO L87 Difference]: Start difference. First operand 244 states and 292 transitions. Second operand has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) [2024-11-23 23:56:14,353 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 23:56:15,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:56:15,026 INFO L93 Difference]: Finished difference Result 399 states and 487 transitions. [2024-11-23 23:56:15,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:56:15,027 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) Word has length 193 [2024-11-23 23:56:15,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:56:15,029 INFO L225 Difference]: With dead ends: 399 [2024-11-23 23:56:15,029 INFO L226 Difference]: Without dead ends: 239 [2024-11-23 23:56:15,030 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=28, Invalid=64, Unknown=2, NotChecked=16, Total=110 [2024-11-23 23:56:15,030 INFO L435 NwaCegarLoop]: 204 mSDtfsCounter, 3 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 213 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:56:15,030 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 968 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 1 Unknown, 213 Unchecked, 4.6s Time] [2024-11-23 23:56:15,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2024-11-23 23:56:15,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 237. [2024-11-23 23:56:15,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 159 states have (on average 1.150943396226415) internal successors, (183), 160 states have internal predecessors, (183), 49 states have call successors, (49), 26 states have call predecessors, (49), 28 states have return successors, (50), 50 states have call predecessors, (50), 48 states have call successors, (50) [2024-11-23 23:56:15,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 282 transitions. [2024-11-23 23:56:15,053 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 282 transitions. Word has length 193 [2024-11-23 23:56:15,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:56:15,054 INFO L471 AbstractCegarLoop]: Abstraction has 237 states and 282 transitions. [2024-11-23 23:56:15,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) [2024-11-23 23:56:15,054 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 282 transitions. [2024-11-23 23:56:15,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-11-23 23:56:15,055 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:56:15,056 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:56:15,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-23 23:56:15,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-23 23:56:15,256 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:56:15,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:15,257 INFO L85 PathProgramCache]: Analyzing trace with hash 648120209, now seen corresponding path program 1 times [2024-11-23 23:56:15,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:56:15,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796437669] [2024-11-23 23:56:15,257 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:15,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:56:20,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:23,833 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 28 proven. 3 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2024-11-23 23:56:23,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:56:23,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796437669] [2024-11-23 23:56:23,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796437669] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:56:23,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255327356] [2024-11-23 23:56:23,834 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:23,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:56:23,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:56:23,836 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:56:23,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 23:56:32,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:32,638 INFO L256 TraceCheckSpWp]: Trace formula consists of 4694 conjuncts, 128 conjuncts are in the unsatisfiable core [2024-11-23 23:56:32,648 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:56:33,382 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 23:56:33,395 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 11 treesize of output 7 [2024-11-23 23:56:33,422 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 16 treesize of output 1 [2024-11-23 23:56:37,810 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 23:56:37,827 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 23:56:55,329 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 212 proven. 33 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-23 23:56:55,329 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:57:00,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255327356] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:57:00,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:57:00,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 36] total 40 [2024-11-23 23:57:00,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670974028] [2024-11-23 23:57:00,984 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 23:57:00,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-23 23:57:00,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:57:00,986 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-23 23:57:00,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=2001, Unknown=0, NotChecked=0, Total=2162 [2024-11-23 23:57:00,988 INFO L87 Difference]: Start difference. First operand 237 states and 282 transitions. Second operand has 40 states, 32 states have (on average 5.5625) internal successors, (178), 34 states have internal predecessors, (178), 15 states have call successors, (57), 5 states have call predecessors, (57), 15 states have return successors, (54), 14 states have call predecessors, (54), 15 states have call successors, (54) [2024-11-23 23:57:33,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:57:33,081 INFO L93 Difference]: Finished difference Result 430 states and 531 transitions. [2024-11-23 23:57:33,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-23 23:57:33,082 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 32 states have (on average 5.5625) internal successors, (178), 34 states have internal predecessors, (178), 15 states have call successors, (57), 5 states have call predecessors, (57), 15 states have return successors, (54), 14 states have call predecessors, (54), 15 states have call successors, (54) Word has length 219 [2024-11-23 23:57:33,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:57:33,085 INFO L225 Difference]: With dead ends: 430 [2024-11-23 23:57:33,085 INFO L226 Difference]: Without dead ends: 262 [2024-11-23 23:57:33,088 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 207 SyntacticMatches, 11 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1222 ImplicationChecksByTransitivity, 25.6s TimeCoverageRelationStatistics Valid=377, Invalid=5025, Unknown=0, NotChecked=0, Total=5402 [2024-11-23 23:57:33,088 INFO L435 NwaCegarLoop]: 206 mSDtfsCounter, 223 mSDsluCounter, 3728 mSDsCounter, 0 mSdLazyCounter, 2937 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 3934 SdHoareTripleChecker+Invalid, 3041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 2937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:57:33,089 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 3934 Invalid, 3041 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [104 Valid, 2937 Invalid, 0 Unknown, 0 Unchecked, 22.9s Time] [2024-11-23 23:57:33,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2024-11-23 23:57:33,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 252. [2024-11-23 23:57:33,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 171 states have (on average 1.1461988304093567) internal successors, (196), 173 states have internal predecessors, (196), 49 states have call successors, (49), 28 states have call predecessors, (49), 31 states have return successors, (53), 50 states have call predecessors, (53), 48 states have call successors, (53) [2024-11-23 23:57:33,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 298 transitions. [2024-11-23 23:57:33,134 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 298 transitions. Word has length 219 [2024-11-23 23:57:33,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:57:33,134 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 298 transitions. [2024-11-23 23:57:33,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 32 states have (on average 5.5625) internal successors, (178), 34 states have internal predecessors, (178), 15 states have call successors, (57), 5 states have call predecessors, (57), 15 states have return successors, (54), 14 states have call predecessors, (54), 15 states have call successors, (54) [2024-11-23 23:57:33,135 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 298 transitions. [2024-11-23 23:57:33,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-11-23 23:57:33,136 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:57:33,137 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:57:33,160 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-23 23:57:33,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-23 23:57:33,337 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:57:33,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:57:33,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1401163521, now seen corresponding path program 1 times [2024-11-23 23:57:33,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:57:33,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945014706] [2024-11-23 23:57:33,338 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:57:33,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:57:38,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:57:40,686 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 20 proven. 11 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2024-11-23 23:57:40,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:57:40,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945014706] [2024-11-23 23:57:40,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945014706] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:57:40,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630847229] [2024-11-23 23:57:40,686 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:57:40,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:57:40,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:57:40,688 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:57:40,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-23 23:57:48,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:57:48,628 INFO L256 TraceCheckSpWp]: Trace formula consists of 4718 conjuncts, 111 conjuncts are in the unsatisfiable core [2024-11-23 23:57:48,638 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:57:49,834 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 23:57:49,849 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 39 treesize of output 1 [2024-11-23 23:57:49,863 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 23:57:51,074 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 23:57:51,093 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 23:58:02,333 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 223 proven. 18 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-23 23:58:02,333 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:58:11,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630847229] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:58:11,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:58:11,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 27] total 31 [2024-11-23 23:58:11,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852628644] [2024-11-23 23:58:11,114 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 23:58:11,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-23 23:58:11,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:58:11,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-23 23:58:11,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1505, Unknown=0, NotChecked=0, Total=1640 [2024-11-23 23:58:11,117 INFO L87 Difference]: Start difference. First operand 252 states and 298 transitions. Second operand has 31 states, 26 states have (on average 7.115384615384615) internal successors, (185), 27 states have internal predecessors, (185), 14 states have call successors, (57), 5 states have call predecessors, (57), 11 states have return successors, (54), 12 states have call predecessors, (54), 14 states have call successors, (54) [2024-11-23 23:58:26,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:58:26,337 INFO L93 Difference]: Finished difference Result 503 states and 597 transitions. [2024-11-23 23:58:26,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-23 23:58:26,338 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 26 states have (on average 7.115384615384615) internal successors, (185), 27 states have internal predecessors, (185), 14 states have call successors, (57), 5 states have call predecessors, (57), 11 states have return successors, (54), 12 states have call predecessors, (54), 14 states have call successors, (54) Word has length 225 [2024-11-23 23:58:26,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:58:26,340 INFO L225 Difference]: With dead ends: 503 [2024-11-23 23:58:26,340 INFO L226 Difference]: Without dead ends: 255 [2024-11-23 23:58:26,342 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 217 SyntacticMatches, 14 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=261, Invalid=3161, Unknown=0, NotChecked=0, Total=3422 [2024-11-23 23:58:26,343 INFO L435 NwaCegarLoop]: 189 mSDtfsCounter, 69 mSDsluCounter, 2175 mSDsCounter, 0 mSdLazyCounter, 1360 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 2364 SdHoareTripleChecker+Invalid, 1375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:58:26,343 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 2364 Invalid, 1375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1360 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2024-11-23 23:58:26,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-11-23 23:58:26,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 252. [2024-11-23 23:58:26,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 171 states have (on average 1.1403508771929824) internal successors, (195), 173 states have internal predecessors, (195), 49 states have call successors, (49), 28 states have call predecessors, (49), 31 states have return successors, (52), 50 states have call predecessors, (52), 48 states have call successors, (52) [2024-11-23 23:58:26,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 296 transitions. [2024-11-23 23:58:26,381 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 296 transitions. Word has length 225 [2024-11-23 23:58:26,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:58:26,381 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 296 transitions. [2024-11-23 23:58:26,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 26 states have (on average 7.115384615384615) internal successors, (185), 27 states have internal predecessors, (185), 14 states have call successors, (57), 5 states have call predecessors, (57), 11 states have return successors, (54), 12 states have call predecessors, (54), 14 states have call successors, (54) [2024-11-23 23:58:26,381 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 296 transitions. [2024-11-23 23:58:26,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-11-23 23:58:26,383 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:58:26,383 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:58:26,406 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-23 23:58:26,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-23 23:58:26,584 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:58:26,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:58:26,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1885193538, now seen corresponding path program 1 times [2024-11-23 23:58:26,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:58:26,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973102111] [2024-11-23 23:58:26,584 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:58:26,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:58:33,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:58:34,729 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 8 proven. 23 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2024-11-23 23:58:34,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:58:34,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973102111] [2024-11-23 23:58:34,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973102111] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:58:34,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224586606] [2024-11-23 23:58:34,730 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:58:34,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:58:34,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:58:34,732 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:58:34,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-23 23:58:43,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:58:43,134 INFO L256 TraceCheckSpWp]: Trace formula consists of 4738 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-23 23:58:43,140 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:58:44,914 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-23 23:58:44,914 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:58:44,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224586606] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:58:44,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:58:44,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 16 [2024-11-23 23:58:44,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876469660] [2024-11-23 23:58:44,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:58:44,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 23:58:44,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:58:44,916 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 23:58:44,916 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2024-11-23 23:58:44,916 INFO L87 Difference]: Start difference. First operand 252 states and 296 transitions. Second operand has 13 states, 11 states have (on average 10.454545454545455) internal successors, (115), 10 states have internal predecessors, (115), 4 states have call successors, (32), 2 states have call predecessors, (32), 6 states have return successors, (30), 5 states have call predecessors, (30), 4 states have call successors, (30) [2024-11-23 23:58:47,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:58:47,198 INFO L93 Difference]: Finished difference Result 409 states and 487 transitions. [2024-11-23 23:58:47,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 23:58:47,199 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 10.454545454545455) internal successors, (115), 10 states have internal predecessors, (115), 4 states have call successors, (32), 2 states have call predecessors, (32), 6 states have return successors, (30), 5 states have call predecessors, (30), 4 states have call successors, (30) Word has length 229 [2024-11-23 23:58:47,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:58:47,201 INFO L225 Difference]: With dead ends: 409 [2024-11-23 23:58:47,201 INFO L226 Difference]: Without dead ends: 252 [2024-11-23 23:58:47,202 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2024-11-23 23:58:47,202 INFO L435 NwaCegarLoop]: 181 mSDtfsCounter, 1 mSDsluCounter, 1892 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2073 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:58:47,202 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2073 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-23 23:58:47,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2024-11-23 23:58:47,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2024-11-23 23:58:47,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 171 states have (on average 1.1345029239766082) internal successors, (194), 173 states have internal predecessors, (194), 49 states have call successors, (49), 28 states have call predecessors, (49), 31 states have return successors, (52), 50 states have call predecessors, (52), 48 states have call successors, (52) [2024-11-23 23:58:47,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 295 transitions. [2024-11-23 23:58:47,241 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 295 transitions. Word has length 229 [2024-11-23 23:58:47,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:58:47,242 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 295 transitions. [2024-11-23 23:58:47,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 10.454545454545455) internal successors, (115), 10 states have internal predecessors, (115), 4 states have call successors, (32), 2 states have call predecessors, (32), 6 states have return successors, (30), 5 states have call predecessors, (30), 4 states have call successors, (30) [2024-11-23 23:58:47,242 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 295 transitions. [2024-11-23 23:58:47,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-23 23:58:47,244 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:58:47,244 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:58:47,268 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-23 23:58:47,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-23 23:58:47,444 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:58:47,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:58:47,445 INFO L85 PathProgramCache]: Analyzing trace with hash 710250243, now seen corresponding path program 1 times [2024-11-23 23:58:47,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:58:47,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594263604] [2024-11-23 23:58:47,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:58:47,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:58:53,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:58:54,575 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 8 proven. 23 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2024-11-23 23:58:54,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:58:54,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594263604] [2024-11-23 23:58:54,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594263604] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:58:54,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848733274] [2024-11-23 23:58:54,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:58:54,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:58:54,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:58:54,578 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:58:54,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-23 23:59:03,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:59:03,241 INFO L256 TraceCheckSpWp]: Trace formula consists of 4742 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 23:59:03,245 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:59:03,436 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2024-11-23 23:59:03,436 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:59:03,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848733274] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:59:03,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:59:03,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2024-11-23 23:59:03,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755301595] [2024-11-23 23:59:03,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:59:03,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:59:03,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:59:03,438 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:59:03,438 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:59:03,438 INFO L87 Difference]: Start difference. First operand 252 states and 295 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 3 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2024-11-23 23:59:04,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:59:04,087 INFO L93 Difference]: Finished difference Result 447 states and 525 transitions. [2024-11-23 23:59:04,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:59:04,088 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 3 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 231 [2024-11-23 23:59:04,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:59:04,090 INFO L225 Difference]: With dead ends: 447 [2024-11-23 23:59:04,090 INFO L226 Difference]: Without dead ends: 254 [2024-11-23 23:59:04,091 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:59:04,092 INFO L435 NwaCegarLoop]: 184 mSDtfsCounter, 0 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:59:04,092 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 889 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-23 23:59:04,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-11-23 23:59:04,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 247. [2024-11-23 23:59:04,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 167 states have (on average 1.125748502994012) internal successors, (188), 169 states have internal predecessors, (188), 49 states have call successors, (49), 28 states have call predecessors, (49), 30 states have return successors, (51), 49 states have call predecessors, (51), 48 states have call successors, (51) [2024-11-23 23:59:04,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 288 transitions. [2024-11-23 23:59:04,129 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 288 transitions. Word has length 231 [2024-11-23 23:59:04,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:59:04,129 INFO L471 AbstractCegarLoop]: Abstraction has 247 states and 288 transitions. [2024-11-23 23:59:04,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 3 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2024-11-23 23:59:04,130 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 288 transitions. [2024-11-23 23:59:04,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-11-23 23:59:04,131 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:59:04,132 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:59:04,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-23 23:59:04,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:59:04,332 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:59:04,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:59:04,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1325663996, now seen corresponding path program 1 times [2024-11-23 23:59:04,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:59:04,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646099952] [2024-11-23 23:59:04,333 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:59:04,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:59:12,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:59:19,260 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 20 proven. 43 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2024-11-23 23:59:19,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:59:19,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646099952] [2024-11-23 23:59:19,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646099952] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:59:19,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764870356] [2024-11-23 23:59:19,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:59:19,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:59:19,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:59:19,265 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:59:19,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-23 23:59:39,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:59:39,521 INFO L256 TraceCheckSpWp]: Trace formula consists of 4833 conjuncts, 178 conjuncts are in the unsatisfiable core [2024-11-23 23:59:39,533 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:59:40,411 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 23:59:40,423 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 11 treesize of output 7 [2024-11-23 23:59:40,447 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 27 treesize of output 1 [2024-11-23 23:59:41,950 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 23:59:41,968 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 [2024-11-24 00:00:09,803 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 251 proven. 8 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-24 00:00:09,804 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:00:25,347 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-24 00:00:25,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764870356] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-24 00:00:25,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-24 00:00:25,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14, 43] total 66 [2024-11-24 00:00:25,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72419249] [2024-11-24 00:00:25,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:00:25,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-24 00:00:25,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:00:25,349 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-24 00:00:25,350 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=4015, Unknown=0, NotChecked=0, Total=4290 [2024-11-24 00:00:25,351 INFO L87 Difference]: Start difference. First operand 247 states and 288 transitions. Second operand has 14 states, 13 states have (on average 7.769230769230769) internal successors, (101), 10 states have internal predecessors, (101), 3 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 5 states have call predecessors, (30), 3 states have call successors, (30) [2024-11-24 00:00:26,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:00:26,260 INFO L93 Difference]: Finished difference Result 415 states and 495 transitions. [2024-11-24 00:00:26,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 00:00:26,261 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 7.769230769230769) internal successors, (101), 10 states have internal predecessors, (101), 3 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 5 states have call predecessors, (30), 3 states have call successors, (30) Word has length 237 [2024-11-24 00:00:26,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:00:26,263 INFO L225 Difference]: With dead ends: 415 [2024-11-24 00:00:26,263 INFO L226 Difference]: Without dead ends: 274 [2024-11-24 00:00:26,265 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 410 SyntacticMatches, 12 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 994 ImplicationChecksByTransitivity, 29.4s TimeCoverageRelationStatistics Valid=275, Invalid=4015, Unknown=0, NotChecked=0, Total=4290 [2024-11-24 00:00:26,266 INFO L435 NwaCegarLoop]: 187 mSDtfsCounter, 4 mSDsluCounter, 1848 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2035 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-24 00:00:26,266 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2035 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-24 00:00:26,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2024-11-24 00:00:26,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 259. [2024-11-24 00:00:26,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 176 states have (on average 1.1193181818181819) internal successors, (197), 178 states have internal predecessors, (197), 49 states have call successors, (49), 28 states have call predecessors, (49), 33 states have return successors, (55), 52 states have call predecessors, (55), 48 states have call successors, (55) [2024-11-24 00:00:26,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 301 transitions. [2024-11-24 00:00:26,307 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 301 transitions. Word has length 237 [2024-11-24 00:00:26,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:00:26,308 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 301 transitions. [2024-11-24 00:00:26,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 7.769230769230769) internal successors, (101), 10 states have internal predecessors, (101), 3 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 5 states have call predecessors, (30), 3 states have call successors, (30) [2024-11-24 00:00:26,309 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 301 transitions. [2024-11-24 00:00:26,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2024-11-24 00:00:26,310 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:00:26,313 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:00:26,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-24 00:00:26,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:00:26,515 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:00:26,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:00:26,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1310454774, now seen corresponding path program 1 times [2024-11-24 00:00:26,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:00:26,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161548615] [2024-11-24 00:00:26,516 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:00:26,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:00:34,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:00:41,185 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 20 proven. 43 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-11-24 00:00:41,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:00:41,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161548615] [2024-11-24 00:00:41,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161548615] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:00:41,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7302581] [2024-11-24 00:00:41,186 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:00:41,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:00:41,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:00:41,188 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:00:41,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-24 00:00:49,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:00:49,974 INFO L256 TraceCheckSpWp]: Trace formula consists of 4837 conjuncts, 102 conjuncts are in the unsatisfiable core [2024-11-24 00:00:49,981 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:00:51,465 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 39 treesize of output 1 [2024-11-24 00:00:51,478 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 [2024-11-24 00:00:51,492 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 [2024-11-24 00:00:53,174 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 [2024-11-24 00:00:53,205 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 [2024-11-24 00:01:04,336 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 231 proven. 18 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-24 00:01:04,336 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:01:09,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7302581] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:01:09,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 00:01:09,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 25] total 36 [2024-11-24 00:01:09,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906190940] [2024-11-24 00:01:09,059 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 00:01:09,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-24 00:01:09,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:01:09,060 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-24 00:01:09,060 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1510, Unknown=0, NotChecked=0, Total=1640 [2024-11-24 00:01:09,060 INFO L87 Difference]: Start difference. First operand 259 states and 301 transitions. Second operand has 36 states, 30 states have (on average 7.333333333333333) internal successors, (220), 31 states have internal predecessors, (220), 14 states have call successors, (60), 5 states have call predecessors, (60), 13 states have return successors, (58), 14 states have call predecessors, (58), 14 states have call successors, (58) [2024-11-24 00:01:31,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:01:31,289 INFO L93 Difference]: Finished difference Result 553 states and 643 transitions. [2024-11-24 00:01:31,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-24 00:01:31,291 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 30 states have (on average 7.333333333333333) internal successors, (220), 31 states have internal predecessors, (220), 14 states have call successors, (60), 5 states have call predecessors, (60), 13 states have return successors, (58), 14 states have call predecessors, (58), 14 states have call successors, (58) Word has length 241 [2024-11-24 00:01:31,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:01:31,294 INFO L225 Difference]: With dead ends: 553 [2024-11-24 00:01:31,294 INFO L226 Difference]: Without dead ends: 259 [2024-11-24 00:01:31,297 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 238 SyntacticMatches, 13 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1028 ImplicationChecksByTransitivity, 19.7s TimeCoverageRelationStatistics Valid=316, Invalid=4514, Unknown=0, NotChecked=0, Total=4830 [2024-11-24 00:01:31,297 INFO L435 NwaCegarLoop]: 191 mSDtfsCounter, 66 mSDsluCounter, 4711 mSDsCounter, 0 mSdLazyCounter, 2064 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 4902 SdHoareTripleChecker+Invalid, 2072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 2064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2024-11-24 00:01:31,298 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 4902 Invalid, 2072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 2064 Invalid, 0 Unknown, 0 Unchecked, 14.9s Time] [2024-11-24 00:01:31,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-11-24 00:01:31,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2024-11-24 00:01:31,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 176 states have (on average 1.1079545454545454) internal successors, (195), 178 states have internal predecessors, (195), 49 states have call successors, (49), 28 states have call predecessors, (49), 33 states have return successors, (55), 52 states have call predecessors, (55), 48 states have call successors, (55) [2024-11-24 00:01:31,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 299 transitions. [2024-11-24 00:01:31,355 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 299 transitions. Word has length 241 [2024-11-24 00:01:31,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:01:31,356 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 299 transitions. [2024-11-24 00:01:31,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 30 states have (on average 7.333333333333333) internal successors, (220), 31 states have internal predecessors, (220), 14 states have call successors, (60), 5 states have call predecessors, (60), 13 states have return successors, (58), 14 states have call predecessors, (58), 14 states have call successors, (58) [2024-11-24 00:01:31,356 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 299 transitions. [2024-11-24 00:01:31,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2024-11-24 00:01:31,359 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:01:31,359 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:01:31,396 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-24 00:01:31,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-24 00:01:31,562 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:01:31,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:01:31,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1848220310, now seen corresponding path program 1 times [2024-11-24 00:01:31,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:01:31,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677116313] [2024-11-24 00:01:31,563 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:01:31,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:01:41,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:01:43,357 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 25 proven. 6 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2024-11-24 00:01:43,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:01:43,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677116313] [2024-11-24 00:01:43,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677116313] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:01:43,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387318279] [2024-11-24 00:01:43,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:01:43,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:01:43,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:01:43,360 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:01:43,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-24 00:02:51,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:02:51,810 INFO L256 TraceCheckSpWp]: Trace formula consists of 4841 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-24 00:02:51,815 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:02:52,007 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2024-11-24 00:02:52,007 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:02:52,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387318279] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:02:52,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:02:52,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2024-11-24 00:02:52,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174837323] [2024-11-24 00:02:52,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:02:52,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:02:52,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:02:52,008 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:02:52,008 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:02:52,009 INFO L87 Difference]: Start difference. First operand 259 states and 299 transitions. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2024-11-24 00:02:52,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:02:52,558 INFO L93 Difference]: Finished difference Result 371 states and 436 transitions. [2024-11-24 00:02:52,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:02:52,559 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 245 [2024-11-24 00:02:52,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:02:52,561 INFO L225 Difference]: With dead ends: 371 [2024-11-24 00:02:52,561 INFO L226 Difference]: Without dead ends: 259 [2024-11-24 00:02:52,561 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:02:52,561 INFO L435 NwaCegarLoop]: 185 mSDtfsCounter, 0 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:02:52,562 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 893 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 00:02:52,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-11-24 00:02:52,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 254. [2024-11-24 00:02:52,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 172 states have (on average 1.0988372093023255) internal successors, (189), 174 states have internal predecessors, (189), 49 states have call successors, (49), 28 states have call predecessors, (49), 32 states have return successors, (54), 51 states have call predecessors, (54), 48 states have call successors, (54) [2024-11-24 00:02:52,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 292 transitions. [2024-11-24 00:02:52,600 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 292 transitions. Word has length 245 [2024-11-24 00:02:52,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:02:52,601 INFO L471 AbstractCegarLoop]: Abstraction has 254 states and 292 transitions. [2024-11-24 00:02:52,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2024-11-24 00:02:52,601 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 292 transitions. [2024-11-24 00:02:52,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-11-24 00:02:52,603 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:02:52,603 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:02:52,803 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forcibly destroying the process [2024-11-24 00:02:52,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-24 00:02:52,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:02:52,842 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:02:52,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:02:52,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1008779767, now seen corresponding path program 1 times [2024-11-24 00:02:52,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:02:52,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686571396] [2024-11-24 00:02:52,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:02:52,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:03:02,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:03:11,922 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2024-11-24 00:03:11,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:03:11,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686571396] [2024-11-24 00:03:11,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686571396] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:03:11,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:03:11,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-24 00:03:11,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223531351] [2024-11-24 00:03:11,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:03:11,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-24 00:03:11,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:03:11,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-24 00:03:11,924 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2024-11-24 00:03:11,924 INFO L87 Difference]: Start difference. First operand 254 states and 292 transitions. Second operand has 15 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 states have internal predecessors, (93), 8 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (29), 9 states have call predecessors, (29), 8 states have call successors, (29) [2024-11-24 00:03:14,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:03:14,129 INFO L93 Difference]: Finished difference Result 378 states and 441 transitions. [2024-11-24 00:03:14,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-24 00:03:14,129 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 states have internal predecessors, (93), 8 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (29), 9 states have call predecessors, (29), 8 states have call successors, (29) Word has length 251 [2024-11-24 00:03:14,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:03:14,131 INFO L225 Difference]: With dead ends: 378 [2024-11-24 00:03:14,131 INFO L226 Difference]: Without dead ends: 275 [2024-11-24 00:03:14,132 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2024-11-24 00:03:14,132 INFO L435 NwaCegarLoop]: 182 mSDtfsCounter, 30 mSDsluCounter, 1885 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 2067 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:03:14,133 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 2067 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-24 00:03:14,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2024-11-24 00:03:14,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 265. [2024-11-24 00:03:14,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 180 states have (on average 1.0944444444444446) internal successors, (197), 182 states have internal predecessors, (197), 50 states have call successors, (50), 28 states have call predecessors, (50), 34 states have return successors, (57), 54 states have call predecessors, (57), 49 states have call successors, (57) [2024-11-24 00:03:14,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 304 transitions. [2024-11-24 00:03:14,174 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 304 transitions. Word has length 251 [2024-11-24 00:03:14,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:03:14,175 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 304 transitions. [2024-11-24 00:03:14,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 states have internal predecessors, (93), 8 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (29), 9 states have call predecessors, (29), 8 states have call successors, (29) [2024-11-24 00:03:14,175 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 304 transitions. [2024-11-24 00:03:14,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2024-11-24 00:03:14,177 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:03:14,177 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2024-11-24 00:03:14,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-24 00:03:14,178 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:03:14,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:03:14,178 INFO L85 PathProgramCache]: Analyzing trace with hash -281091408, now seen corresponding path program 1 times [2024-11-24 00:03:14,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:03:14,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454785083] [2024-11-24 00:03:14,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:03:14,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:03:19,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:03:20,279 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2024-11-24 00:03:20,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:03:20,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454785083] [2024-11-24 00:03:20,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454785083] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:03:20,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:03:20,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:03:20,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160608935] [2024-11-24 00:03:20,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:03:20,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:03:20,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:03:20,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:03:20,280 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:03:20,281 INFO L87 Difference]: Start difference. First operand 265 states and 304 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 2 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (28), 4 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-24 00:03:20,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:03:20,506 INFO L93 Difference]: Finished difference Result 475 states and 547 transitions. [2024-11-24 00:03:20,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:03:20,507 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 2 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (28), 4 states have call predecessors, (28), 2 states have call successors, (28) Word has length 257 [2024-11-24 00:03:20,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:03:20,509 INFO L225 Difference]: With dead ends: 475 [2024-11-24 00:03:20,509 INFO L226 Difference]: Without dead ends: 250 [2024-11-24 00:03:20,510 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:03:20,511 INFO L435 NwaCegarLoop]: 195 mSDtfsCounter, 0 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:03:20,512 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1157 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:03:20,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2024-11-24 00:03:20,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2024-11-24 00:03:20,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 170 states have (on average 1.0823529411764705) internal successors, (184), 172 states have internal predecessors, (184), 47 states have call successors, (47), 28 states have call predecessors, (47), 32 states have return successors, (52), 49 states have call predecessors, (52), 46 states have call successors, (52) [2024-11-24 00:03:20,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 283 transitions. [2024-11-24 00:03:20,549 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 283 transitions. Word has length 257 [2024-11-24 00:03:20,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:03:20,550 INFO L471 AbstractCegarLoop]: Abstraction has 250 states and 283 transitions. [2024-11-24 00:03:20,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 2 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (28), 4 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-24 00:03:20,550 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 283 transitions. [2024-11-24 00:03:20,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-11-24 00:03:20,552 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:03:20,552 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2024-11-24 00:03:20,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-24 00:03:20,552 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:03:20,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:03:20,553 INFO L85 PathProgramCache]: Analyzing trace with hash 592184628, now seen corresponding path program 1 times [2024-11-24 00:03:20,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:03:20,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764272243] [2024-11-24 00:03:20,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:03:20,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:03:39,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:03:51,518 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 20 proven. 20 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2024-11-24 00:03:51,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:03:51,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764272243] [2024-11-24 00:03:51,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764272243] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:03:51,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460158694] [2024-11-24 00:03:51,519 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:03:51,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:03:51,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:03:51,523 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:03:51,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a8bc932-ad2a-49a8-ae70-a8bf50d70e8c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process