./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e4f78d-a31f-46cf-be34-915baf3d2b66/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e4f78d-a31f-46cf-be34-915baf3d2b66/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e4f78d-a31f-46cf-be34-915baf3d2b66/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e4f78d-a31f-46cf-be34-915baf3d2b66/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e4f78d-a31f-46cf-be34-915baf3d2b66/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e4f78d-a31f-46cf-be34-915baf3d2b66/bin/utaipan-verify-YMUCfTKeje --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d03ab2f374c74d452a3d10e43faf5dd107aad5d480e09c302467ee543678a603 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:44:44,696 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:44:44,812 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e4f78d-a31f-46cf-be34-915baf3d2b66/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-09 05:44:44,820 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:44:44,820 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:44:44,889 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:44:44,890 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:44:44,890 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:44:44,892 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:44:44,892 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:44:44,893 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:44:44,893 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:44:44,894 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:44:44,895 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:44:44,895 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:44:44,896 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:44:44,896 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:44:44,897 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:44:44,898 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:44:44,898 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:44:44,899 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:44:44,903 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:44:44,904 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:44:44,905 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:44:44,905 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:44:44,905 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:44:44,906 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:44:44,906 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:44:44,920 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:44:44,921 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:44:44,922 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:44:44,923 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:44:44,923 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:44:44,923 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:44:44,924 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:44:44,924 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:44:44,924 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:44:44,924 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:44:44,925 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:44:44,925 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:44:44,925 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:44:44,926 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:44:44,926 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:44:44,926 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:44:44,927 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e4f78d-a31f-46cf-be34-915baf3d2b66/bin/utaipan-verify-YMUCfTKeje/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e4f78d-a31f-46cf-be34-915baf3d2b66/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d03ab2f374c74d452a3d10e43faf5dd107aad5d480e09c302467ee543678a603 [2024-11-09 05:44:45,275 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:44:45,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:44:45,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:44:45,318 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:44:45,319 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:44:45,320 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e4f78d-a31f-46cf-be34-915baf3d2b66/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i Unable to find full path for "g++" [2024-11-09 05:44:47,858 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:44:48,458 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:44:48,462 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e4f78d-a31f-46cf-be34-915baf3d2b66/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i [2024-11-09 05:44:48,518 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e4f78d-a31f-46cf-be34-915baf3d2b66/bin/utaipan-verify-YMUCfTKeje/data/007eb238a/4cc5b416bc9c4cd6aa3ecd54feaa943e/FLAG2751ac447 [2024-11-09 05:44:48,545 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e4f78d-a31f-46cf-be34-915baf3d2b66/bin/utaipan-verify-YMUCfTKeje/data/007eb238a/4cc5b416bc9c4cd6aa3ecd54feaa943e [2024-11-09 05:44:48,548 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:44:48,551 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:44:48,552 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:44:48,553 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:44:48,560 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:44:48,563 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:44:48" (1/1) ... [2024-11-09 05:44:48,565 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@529f3bd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:44:48, skipping insertion in model container [2024-11-09 05:44:48,565 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:44:48" (1/1) ... [2024-11-09 05:44:48,721 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:44:49,145 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_c6e4f78d-a31f-46cf-be34-915baf3d2b66/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i[4501,4514] [2024-11-09 05:44:49,155 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_c6e4f78d-a31f-46cf-be34-915baf3d2b66/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i[4561,4574] [2024-11-09 05:44:50,453 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:44:50,454 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:44:50,455 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:44:50,456 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:44:50,457 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:44:50,483 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:44:50,484 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:44:50,489 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:44:50,490 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:44:51,324 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:44:51,325 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:44:51,478 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:44:51,524 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:44:51,552 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_c6e4f78d-a31f-46cf-be34-915baf3d2b66/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i[4501,4514] [2024-11-09 05:44:51,553 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_c6e4f78d-a31f-46cf-be34-915baf3d2b66/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i[4561,4574] [2024-11-09 05:44:51,684 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:44:51,688 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:44:51,689 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:44:51,690 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:44:51,691 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:44:51,701 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:44:51,702 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:44:51,704 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:44:51,704 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:44:51,869 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:44:51,873 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:44:51,895 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7703-7714] [2024-11-09 05:44:51,929 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:44:52,250 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:44:52,251 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:44:52 WrapperNode [2024-11-09 05:44:52,251 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:44:52,253 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:44:52,253 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:44:52,253 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:44:52,262 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:44:52" (1/1) ... [2024-11-09 05:44:52,338 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:44:52" (1/1) ... [2024-11-09 05:44:52,409 INFO L138 Inliner]: procedures = 678, calls = 1509, calls flagged for inlining = 54, calls inlined = 9, statements flattened = 621 [2024-11-09 05:44:52,409 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:44:52,413 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:44:52,414 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:44:52,414 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:44:52,429 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:44:52" (1/1) ... [2024-11-09 05:44:52,430 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:44:52" (1/1) ... [2024-11-09 05:44:52,447 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:44:52" (1/1) ... [2024-11-09 05:44:52,448 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:44:52" (1/1) ... [2024-11-09 05:44:52,502 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:44:52" (1/1) ... [2024-11-09 05:44:52,513 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:44:52" (1/1) ... [2024-11-09 05:44:52,525 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:44:52" (1/1) ... [2024-11-09 05:44:52,534 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:44:52" (1/1) ... [2024-11-09 05:44:52,550 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:44:52,551 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:44:52,551 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:44:52,551 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:44:52,552 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:44:52" (1/1) ... [2024-11-09 05:44:52,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:44:52,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e4f78d-a31f-46cf-be34-915baf3d2b66/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:44:52,596 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e4f78d-a31f-46cf-be34-915baf3d2b66/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:44:52,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e4f78d-a31f-46cf-be34-915baf3d2b66/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:44:52,633 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2024-11-09 05:44:52,633 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2024-11-09 05:44:52,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 05:44:52,635 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2024-11-09 05:44:52,635 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2024-11-09 05:44:52,635 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2024-11-09 05:44:52,636 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2024-11-09 05:44:52,636 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-09 05:44:52,636 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-09 05:44:52,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-09 05:44:52,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 05:44:52,637 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-11-09 05:44:52,637 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-11-09 05:44:52,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 05:44:52,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 05:44:52,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 05:44:52,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:44:52,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-09 05:44:52,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:44:52,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:44:52,640 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_clean_up [2024-11-09 05:44:52,640 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_clean_up [2024-11-09 05:44:52,640 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-09 05:44:52,640 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-09 05:44:52,640 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2024-11-09 05:44:52,640 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2024-11-09 05:44:52,641 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2024-11-09 05:44:52,641 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2024-11-09 05:44:52,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-09 05:44:52,641 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2024-11-09 05:44:52,641 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2024-11-09 05:44:52,642 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2024-11-09 05:44:52,642 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2024-11-09 05:44:52,642 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-09 05:44:52,642 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-09 05:44:52,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 05:44:52,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 05:44:52,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-09 05:44:52,643 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-09 05:44:52,643 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-09 05:44:52,644 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2024-11-09 05:44:52,645 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2024-11-09 05:44:52,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 05:44:52,645 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2024-11-09 05:44:52,645 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2024-11-09 05:44:52,645 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2024-11-09 05:44:52,645 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2024-11-09 05:44:52,645 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2024-11-09 05:44:52,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2024-11-09 05:44:52,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:44:53,017 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:44:53,020 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:44:57,598 INFO L? ?]: Removed 136 outVars from TransFormulas that were not future-live. [2024-11-09 05:44:57,598 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:44:58,269 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:44:58,270 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 05:44:58,270 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:44:58 BoogieIcfgContainer [2024-11-09 05:44:58,270 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:44:58,273 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:44:58,273 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:44:58,277 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:44:58,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:44:48" (1/3) ... [2024-11-09 05:44:58,278 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bfa67a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:44:58, skipping insertion in model container [2024-11-09 05:44:58,279 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:44:52" (2/3) ... [2024-11-09 05:44:58,279 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bfa67a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:44:58, skipping insertion in model container [2024-11-09 05:44:58,279 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:44:58" (3/3) ... [2024-11-09 05:44:58,281 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_clean_up_harness.i [2024-11-09 05:44:58,302 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:44:58,302 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 05:44:58,400 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:44:58,411 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=FINITE_AUTOMATA, 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;@2f3ca757, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:44:58,411 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 05:44:58,417 INFO L276 IsEmpty]: Start isEmpty. Operand has 144 states, 84 states have (on average 1.2261904761904763) internal successors, (103), 85 states have internal predecessors, (103), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-11-09 05:44:58,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-09 05:44:58,433 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:44:58,434 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 3, 3, 3, 3, 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] [2024-11-09 05:44:58,435 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:44:58,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:44:58,441 INFO L85 PathProgramCache]: Analyzing trace with hash -809108030, now seen corresponding path program 1 times [2024-11-09 05:44:58,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:44:58,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116994173] [2024-11-09 05:44:58,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:44:58,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:45:07,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:45:09,547 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-11-09 05:45:09,547 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:45:09,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116994173] [2024-11-09 05:45:09,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116994173] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:45:09,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:45:09,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:45:09,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775511964] [2024-11-09 05:45:09,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:45:09,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:45:09,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:45:09,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:45:09,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:45:09,601 INFO L87 Difference]: Start difference. First operand has 144 states, 84 states have (on average 1.2261904761904763) internal successors, (103), 85 states have internal predecessors, (103), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-09 05:45:11,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:45:13,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:45:16,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:45:17,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:45:17,636 INFO L93 Difference]: Finished difference Result 226 states and 293 transitions. [2024-11-09 05:45:17,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:45:17,640 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 109 [2024-11-09 05:45:17,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:45:17,650 INFO L225 Difference]: With dead ends: 226 [2024-11-09 05:45:17,651 INFO L226 Difference]: Without dead ends: 142 [2024-11-09 05:45:17,654 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:45:17,658 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 6 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2024-11-09 05:45:17,660 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 573 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 3 Unknown, 0 Unchecked, 7.9s Time] [2024-11-09 05:45:17,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-09 05:45:17,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2024-11-09 05:45:17,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 82 states have (on average 1.1951219512195121) internal successors, (98), 84 states have internal predecessors, (98), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-09 05:45:17,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 179 transitions. [2024-11-09 05:45:17,720 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 179 transitions. Word has length 109 [2024-11-09 05:45:17,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:45:17,724 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 179 transitions. [2024-11-09 05:45:17,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-09 05:45:17,726 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 179 transitions. [2024-11-09 05:45:17,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-09 05:45:17,735 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:45:17,737 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 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] [2024-11-09 05:45:17,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:45:17,738 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:45:17,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:45:17,738 INFO L85 PathProgramCache]: Analyzing trace with hash 156154674, now seen corresponding path program 1 times [2024-11-09 05:45:17,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:45:17,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760070126] [2024-11-09 05:45:17,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:45:17,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:45:25,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:45:27,238 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-11-09 05:45:27,239 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:45:27,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760070126] [2024-11-09 05:45:27,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760070126] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:45:27,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:45:27,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 05:45:27,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774761284] [2024-11-09 05:45:27,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:45:27,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 05:45:27,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:45:27,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 05:45:27,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:45:27,245 INFO L87 Difference]: Start difference. First operand 142 states and 179 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2024-11-09 05:45:29,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:45:31,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:45:33,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:45:36,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:45:38,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:45:40,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:45:40,781 INFO L93 Difference]: Finished difference Result 233 states and 296 transitions. [2024-11-09 05:45:40,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 05:45:40,783 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 130 [2024-11-09 05:45:40,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:45:40,789 INFO L225 Difference]: With dead ends: 233 [2024-11-09 05:45:40,789 INFO L226 Difference]: Without dead ends: 144 [2024-11-09 05:45:40,791 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-09 05:45:40,792 INFO L432 NwaCegarLoop]: 149 mSDtfsCounter, 12 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:45:40,793 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 852 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 206 Invalid, 5 Unknown, 0 Unchecked, 13.4s Time] [2024-11-09 05:45:40,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-09 05:45:40,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2024-11-09 05:45:40,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 83 states have (on average 1.1927710843373494) internal successors, (99), 86 states have internal predecessors, (99), 41 states have call successors, (41), 18 states have call predecessors, (41), 19 states have return successors, (42), 40 states have call predecessors, (42), 40 states have call successors, (42) [2024-11-09 05:45:40,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 182 transitions. [2024-11-09 05:45:40,815 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 182 transitions. Word has length 130 [2024-11-09 05:45:40,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:45:40,816 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 182 transitions. [2024-11-09 05:45:40,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2024-11-09 05:45:40,817 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 182 transitions. [2024-11-09 05:45:40,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-09 05:45:40,821 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:45:40,821 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 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] [2024-11-09 05:45:40,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 05:45:40,822 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:45:40,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:45:40,823 INFO L85 PathProgramCache]: Analyzing trace with hash -2081299072, now seen corresponding path program 1 times [2024-11-09 05:45:40,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:45:40,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573655997] [2024-11-09 05:45:40,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:45:40,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:45:47,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:45:49,264 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-11-09 05:45:49,264 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:45:49,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573655997] [2024-11-09 05:45:49,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573655997] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:45:49,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:45:49,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 05:45:49,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147282428] [2024-11-09 05:45:49,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:45:49,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:45:49,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:45:49,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:45:49,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:45:49,270 INFO L87 Difference]: Start difference. First operand 144 states and 182 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2024-11-09 05:45:51,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:45:53,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:45:55,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:45:58,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:45:59,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:45:59,802 INFO L93 Difference]: Finished difference Result 227 states and 284 transitions. [2024-11-09 05:45:59,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:45:59,803 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 139 [2024-11-09 05:45:59,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:45:59,805 INFO L225 Difference]: With dead ends: 227 [2024-11-09 05:45:59,806 INFO L226 Difference]: Without dead ends: 144 [2024-11-09 05:45:59,807 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:45:59,808 INFO L432 NwaCegarLoop]: 149 mSDtfsCounter, 11 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:45:59,809 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 699 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 148 Invalid, 4 Unknown, 0 Unchecked, 10.5s Time] [2024-11-09 05:45:59,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-09 05:45:59,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2024-11-09 05:45:59,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 83 states have (on average 1.180722891566265) internal successors, (98), 86 states have internal predecessors, (98), 41 states have call successors, (41), 18 states have call predecessors, (41), 19 states have return successors, (42), 40 states have call predecessors, (42), 40 states have call successors, (42) [2024-11-09 05:45:59,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 181 transitions. [2024-11-09 05:45:59,828 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 181 transitions. Word has length 139 [2024-11-09 05:45:59,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:45:59,829 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 181 transitions. [2024-11-09 05:45:59,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2024-11-09 05:45:59,830 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 181 transitions. [2024-11-09 05:45:59,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-09 05:45:59,833 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:45:59,834 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:45:59,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 05:45:59,834 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:45:59,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:45:59,835 INFO L85 PathProgramCache]: Analyzing trace with hash -307832209, now seen corresponding path program 1 times [2024-11-09 05:45:59,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:45:59,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514374807] [2024-11-09 05:45:59,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:45:59,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:46:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:46:08,460 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-09 05:46:08,461 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:46:08,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514374807] [2024-11-09 05:46:08,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514374807] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:46:08,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:46:08,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 05:46:08,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346476069] [2024-11-09 05:46:08,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:46:08,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 05:46:08,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:46:08,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 05:46:08,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-09 05:46:08,467 INFO L87 Difference]: Start difference. First operand 144 states and 181 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 5 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2024-11-09 05:46:10,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:46:12,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:46:15,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:46:17,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:46:19,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:46:22,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:46:24,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:46:24,557 INFO L93 Difference]: Finished difference Result 232 states and 290 transitions. [2024-11-09 05:46:24,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 05:46:24,562 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 5 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) Word has length 147 [2024-11-09 05:46:24,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:46:24,565 INFO L225 Difference]: With dead ends: 232 [2024-11-09 05:46:24,565 INFO L226 Difference]: Without dead ends: 144 [2024-11-09 05:46:24,566 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-09 05:46:24,567 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 18 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 2 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:46:24,568 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 957 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 232 Invalid, 6 Unknown, 0 Unchecked, 16.0s Time] [2024-11-09 05:46:24,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-09 05:46:24,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2024-11-09 05:46:24,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 83 states have (on average 1.180722891566265) internal successors, (98), 86 states have internal predecessors, (98), 41 states have call successors, (41), 18 states have call predecessors, (41), 19 states have return successors, (41), 40 states have call predecessors, (41), 40 states have call successors, (41) [2024-11-09 05:46:24,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 180 transitions. [2024-11-09 05:46:24,587 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 180 transitions. Word has length 147 [2024-11-09 05:46:24,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:46:24,588 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 180 transitions. [2024-11-09 05:46:24,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 5 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2024-11-09 05:46:24,589 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 180 transitions. [2024-11-09 05:46:24,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-09 05:46:24,593 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:46:24,593 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:46:24,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 05:46:24,593 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:46:24,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:46:24,594 INFO L85 PathProgramCache]: Analyzing trace with hash -2008070209, now seen corresponding path program 1 times [2024-11-09 05:46:24,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:46:24,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232694851] [2024-11-09 05:46:24,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:46:24,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:46:31,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:46:33,513 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-09 05:46:33,513 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:46:33,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232694851] [2024-11-09 05:46:33,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232694851] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:46:33,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:46:33,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 05:46:33,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544718859] [2024-11-09 05:46:33,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:46:33,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:46:33,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:46:33,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:46:33,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:46:33,518 INFO L87 Difference]: Start difference. First operand 144 states and 180 transitions. Second operand has 6 states, 5 states have (on average 12.0) internal successors, (60), 6 states have internal predecessors, (60), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2024-11-09 05:46:35,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:46:37,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:46:40,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:46:42,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:46:44,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:46:46,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:46:46,386 INFO L93 Difference]: Finished difference Result 225 states and 280 transitions. [2024-11-09 05:46:46,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:46:46,387 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.0) internal successors, (60), 6 states have internal predecessors, (60), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 156 [2024-11-09 05:46:46,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:46:46,390 INFO L225 Difference]: With dead ends: 225 [2024-11-09 05:46:46,390 INFO L226 Difference]: Without dead ends: 144 [2024-11-09 05:46:46,391 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:46:46,392 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 5 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2024-11-09 05:46:46,393 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 745 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 131 Invalid, 5 Unknown, 0 Unchecked, 12.8s Time] [2024-11-09 05:46:46,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-09 05:46:46,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2024-11-09 05:46:46,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 83 states have (on average 1.1686746987951808) internal successors, (97), 86 states have internal predecessors, (97), 41 states have call successors, (41), 18 states have call predecessors, (41), 19 states have return successors, (41), 40 states have call predecessors, (41), 40 states have call successors, (41) [2024-11-09 05:46:46,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 179 transitions. [2024-11-09 05:46:46,412 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 179 transitions. Word has length 156 [2024-11-09 05:46:46,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:46:46,413 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 179 transitions. [2024-11-09 05:46:46,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.0) internal successors, (60), 6 states have internal predecessors, (60), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2024-11-09 05:46:46,413 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 179 transitions. [2024-11-09 05:46:46,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-09 05:46:46,416 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:46:46,417 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:46:46,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 05:46:46,417 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:46:46,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:46:46,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1554596590, now seen corresponding path program 1 times [2024-11-09 05:46:46,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:46:46,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139391845] [2024-11-09 05:46:46,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:46:46,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:46:54,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat