./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_top_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_a7f83ba4-1b82-4609-9629-c5d63461169c/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7f83ba4-1b82-4609-9629-c5d63461169c/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_a7f83ba4-1b82-4609-9629-c5d63461169c/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7f83ba4-1b82-4609-9629-c5d63461169c/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7f83ba4-1b82-4609-9629-c5d63461169c/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_a7f83ba4-1b82-4609-9629-c5d63461169c/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 83b04173d709803d577cfa49fe0a9356919fe4fb57e740404cfb5ffbf2560c97 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 06:23:57,220 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:23:57,323 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7f83ba4-1b82-4609-9629-c5d63461169c/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-09 06:23:57,330 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:23:57,331 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:23:57,369 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:23:57,369 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:23:57,370 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:23:57,371 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:23:57,371 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:23:57,372 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 06:23:57,372 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 06:23:57,372 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 06:23:57,373 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 06:23:57,373 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 06:23:57,373 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 06:23:57,374 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 06:23:57,374 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 06:23:57,379 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 06:23:57,379 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 06:23:57,379 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 06:23:57,384 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 06:23:57,384 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:23:57,385 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 06:23:57,385 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 06:23:57,385 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:23:57,385 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 06:23:57,386 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:23:57,386 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 06:23:57,386 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:23:57,387 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 06:23:57,387 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:23:57,387 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:23:57,390 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 06:23:57,390 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:23:57,390 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:23:57,391 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:23:57,391 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:23:57,391 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 06:23:57,391 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 06:23:57,391 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 06:23:57,393 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:23:57,393 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 06:23:57,393 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 06:23:57,394 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_a7f83ba4-1b82-4609-9629-c5d63461169c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7f83ba4-1b82-4609-9629-c5d63461169c/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83b04173d709803d577cfa49fe0a9356919fe4fb57e740404cfb5ffbf2560c97 [2024-11-09 06:23:57,693 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:23:57,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:23:57,727 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:23:57,728 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:23:57,729 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:23:57,730 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7f83ba4-1b82-4609-9629-c5d63461169c/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i Unable to find full path for "g++" [2024-11-09 06:23:59,848 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:24:00,386 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:24:00,387 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7f83ba4-1b82-4609-9629-c5d63461169c/sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i [2024-11-09 06:24:00,436 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7f83ba4-1b82-4609-9629-c5d63461169c/bin/utaipan-verify-YMUCfTKeje/data/4c679cf39/cd55fb52fcf5431d962bcf8e639ea75d/FLAG3c8e0327c [2024-11-09 06:24:00,934 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7f83ba4-1b82-4609-9629-c5d63461169c/bin/utaipan-verify-YMUCfTKeje/data/4c679cf39/cd55fb52fcf5431d962bcf8e639ea75d [2024-11-09 06:24:00,936 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:24:00,938 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:24:00,939 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:24:00,939 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:24:00,945 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:24:00,946 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:24:00" (1/1) ... [2024-11-09 06:24:00,947 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d78eb76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:24:00, skipping insertion in model container [2024-11-09 06:24:00,947 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:24:00" (1/1) ... [2024-11-09 06:24:01,076 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:24:01,391 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7f83ba4-1b82-4609-9629-c5d63461169c/sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i[4496,4509] [2024-11-09 06:24:01,401 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_a7f83ba4-1b82-4609-9629-c5d63461169c/sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i[4556,4569] [2024-11-09 06:24:02,567 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:24:02,568 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:24:02,569 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:24:02,570 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:24:02,572 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:24:02,600 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:24:02,601 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:24:02,607 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:24:02,608 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:24:03,465 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:24:03,467 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:24:03,569 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:24:03,626 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 06:24:03,645 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_a7f83ba4-1b82-4609-9629-c5d63461169c/sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i[4496,4509] [2024-11-09 06:24:03,649 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_a7f83ba4-1b82-4609-9629-c5d63461169c/sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i[4556,4569] [2024-11-09 06:24:03,740 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:24:03,740 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:24:03,741 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:24:03,741 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:24:03,746 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:24:03,761 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:24:03,762 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:24:03,764 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:24:03,766 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:24:03,897 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:24:03,901 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:24:03,916 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7703-7714] [2024-11-09 06:24:03,951 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:24:04,179 INFO L204 MainTranslator]: Completed translation [2024-11-09 06:24:04,181 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:24:04 WrapperNode [2024-11-09 06:24:04,181 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 06:24:04,182 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 06:24:04,183 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 06:24:04,183 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 06:24:04,191 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:24:04" (1/1) ... [2024-11-09 06:24:04,300 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:24:04" (1/1) ... [2024-11-09 06:24:04,364 INFO L138 Inliner]: procedures = 678, calls = 1548, calls flagged for inlining = 54, calls inlined = 10, statements flattened = 726 [2024-11-09 06:24:04,364 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 06:24:04,365 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 06:24:04,365 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 06:24:04,365 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 06:24:04,376 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:24:04" (1/1) ... [2024-11-09 06:24:04,376 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:24:04" (1/1) ... [2024-11-09 06:24:04,384 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:24:04" (1/1) ... [2024-11-09 06:24:04,384 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:24:04" (1/1) ... [2024-11-09 06:24:04,424 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:24:04" (1/1) ... [2024-11-09 06:24:04,430 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:24:04" (1/1) ... [2024-11-09 06:24:04,441 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:24:04" (1/1) ... [2024-11-09 06:24:04,451 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:24:04" (1/1) ... [2024-11-09 06:24:04,464 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 06:24:04,465 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 06:24:04,465 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 06:24:04,465 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 06:24:04,466 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:24:04" (1/1) ... [2024-11-09 06:24:04,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:24:04,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7f83ba4-1b82-4609-9629-c5d63461169c/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:24:04,509 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7f83ba4-1b82-4609-9629-c5d63461169c/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 06:24:04,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7f83ba4-1b82-4609-9629-c5d63461169c/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 06:24:04,545 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2024-11-09 06:24:04,546 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2024-11-09 06:24:04,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 06:24:04,548 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2024-11-09 06:24:04,548 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2024-11-09 06:24:04,548 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2024-11-09 06:24:04,548 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2024-11-09 06:24:04,548 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-09 06:24:04,549 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-09 06:24:04,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-09 06:24:04,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 06:24:04,549 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-11-09 06:24:04,550 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-11-09 06:24:04,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 06:24:04,550 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 06:24:04,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 06:24:04,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 06:24:04,551 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2024-11-09 06:24:04,551 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2024-11-09 06:24:04,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-09 06:24:04,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 06:24:04,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 06:24:04,553 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-09 06:24:04,553 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-09 06:24:04,553 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2024-11-09 06:24:04,553 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2024-11-09 06:24:04,554 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2024-11-09 06:24:04,554 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2024-11-09 06:24:04,554 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2024-11-09 06:24:04,554 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2024-11-09 06:24:04,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-09 06:24:04,554 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2024-11-09 06:24:04,554 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2024-11-09 06:24:04,555 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2024-11-09 06:24:04,555 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2024-11-09 06:24:04,556 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-09 06:24:04,556 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-09 06:24:04,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 06:24:04,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 06:24:04,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-09 06:24:04,557 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-09 06:24:04,557 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-09 06:24:04,557 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2024-11-09 06:24:04,557 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2024-11-09 06:24:04,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 06:24:04,558 INFO L130 BoogieDeclarations]: Found specification of procedure assert_array_list_equivalence [2024-11-09 06:24:04,558 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_array_list_equivalence [2024-11-09 06:24:04,558 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2024-11-09 06:24:04,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2024-11-09 06:24:04,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 06:24:04,927 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 06:24:04,930 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 06:24:09,026 INFO L? ?]: Removed 162 outVars from TransFormulas that were not future-live. [2024-11-09 06:24:09,026 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 06:24:09,633 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 06:24:09,635 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 06:24:09,635 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:24:09 BoogieIcfgContainer [2024-11-09 06:24:09,636 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 06:24:09,638 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 06:24:09,639 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 06:24:09,642 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 06:24:09,643 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:24:00" (1/3) ... [2024-11-09 06:24:09,644 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42844e6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:24:09, skipping insertion in model container [2024-11-09 06:24:09,644 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:24:04" (2/3) ... [2024-11-09 06:24:09,644 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42844e6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:24:09, skipping insertion in model container [2024-11-09 06:24:09,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:24:09" (3/3) ... [2024-11-09 06:24:09,647 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_top_harness.i [2024-11-09 06:24:09,666 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 06:24:09,667 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 06:24:09,768 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:24:09,775 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;@40f6cf8b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:24:09,776 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 06:24:09,781 INFO L276 IsEmpty]: Start isEmpty. Operand has 174 states, 98 states have (on average 1.1938775510204083) internal successors, (117), 98 states have internal predecessors, (117), 57 states have call successors, (57), 18 states have call predecessors, (57), 18 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2024-11-09 06:24:09,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-09 06:24:09,800 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:24:09,801 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 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] [2024-11-09 06:24:09,802 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:24:09,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:24:09,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1819896538, now seen corresponding path program 1 times [2024-11-09 06:24:09,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:24:09,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028951558] [2024-11-09 06:24:09,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:24:09,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:24:19,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:24:20,960 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-09 06:24:20,960 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:24:20,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028951558] [2024-11-09 06:24:20,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028951558] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:24:20,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:24:20,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:24:20,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001857980] [2024-11-09 06:24:20,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:24:20,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:24:20,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:24:21,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:24:21,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:24:21,007 INFO L87 Difference]: Start difference. First operand has 174 states, 98 states have (on average 1.1938775510204083) internal successors, (117), 98 states have internal predecessors, (117), 57 states have call successors, (57), 18 states have call predecessors, (57), 18 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2024-11-09 06:24:23,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:24:25,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:24:27,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:24:29,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:24:29,076 INFO L93 Difference]: Finished difference Result 306 states and 421 transitions. [2024-11-09 06:24:29,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:24:29,079 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 117 [2024-11-09 06:24:29,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:24:29,089 INFO L225 Difference]: With dead ends: 306 [2024-11-09 06:24:29,089 INFO L226 Difference]: Without dead ends: 172 [2024-11-09 06:24:29,093 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 06:24:29,096 INFO L432 NwaCegarLoop]: 196 mSDtfsCounter, 19 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:24:29,097 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 730 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 115 Invalid, 3 Unknown, 0 Unchecked, 8.0s Time] [2024-11-09 06:24:29,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-11-09 06:24:29,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2024-11-09 06:24:29,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 96 states have (on average 1.1666666666666667) internal successors, (112), 97 states have internal predecessors, (112), 57 states have call successors, (57), 18 states have call predecessors, (57), 18 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-09 06:24:29,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 225 transitions. [2024-11-09 06:24:29,194 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 225 transitions. Word has length 117 [2024-11-09 06:24:29,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:24:29,196 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 225 transitions. [2024-11-09 06:24:29,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2024-11-09 06:24:29,196 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 225 transitions. [2024-11-09 06:24:29,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-09 06:24:29,199 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:24:29,200 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:24:29,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 06:24:29,200 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:24:29,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:24:29,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1117798484, now seen corresponding path program 1 times [2024-11-09 06:24:29,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:24:29,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791560346] [2024-11-09 06:24:29,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:24:29,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:24:36,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:24:38,174 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-09 06:24:38,175 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:24:38,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791560346] [2024-11-09 06:24:38,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791560346] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:24:38,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221132631] [2024-11-09 06:24:38,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:24:38,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:24:38,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7f83ba4-1b82-4609-9629-c5d63461169c/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:24:38,179 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7f83ba4-1b82-4609-9629-c5d63461169c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:24:38,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7f83ba4-1b82-4609-9629-c5d63461169c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 06:24:46,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:24:46,446 INFO L255 TraceCheckSpWp]: Trace formula consists of 4534 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 06:24:46,469 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:24:47,806 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-09 06:24:47,807 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:24:47,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221132631] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:24:47,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:24:47,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-09 06:24:47,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51052195] [2024-11-09 06:24:47,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:24:47,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:24:47,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:24:47,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:24:47,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-09 06:24:47,813 INFO L87 Difference]: Start difference. First operand 172 states and 225 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2024-11-09 06:24:49,919 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 06:24:52,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:24:54,456 WARN L539 Checker$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 06:24:56,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:24:58,956 WARN L539 Checker$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 06:25:01,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:25:01,340 INFO L93 Difference]: Finished difference Result 313 states and 416 transitions. [2024-11-09 06:25:01,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 06:25:01,344 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 125 [2024-11-09 06:25:01,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:25:01,348 INFO L225 Difference]: With dead ends: 313 [2024-11-09 06:25:01,349 INFO L226 Difference]: Without dead ends: 174 [2024-11-09 06:25:01,350 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-09 06:25:01,351 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 25 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:25:01,352 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1049 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 230 Invalid, 5 Unknown, 0 Unchecked, 13.3s Time] [2024-11-09 06:25:01,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-11-09 06:25:01,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2024-11-09 06:25:01,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 97 states have (on average 1.1649484536082475) internal successors, (113), 99 states have internal predecessors, (113), 57 states have call successors, (57), 18 states have call predecessors, (57), 19 states have return successors, (62), 56 states have call predecessors, (62), 56 states have call successors, (62) [2024-11-09 06:25:01,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 232 transitions. [2024-11-09 06:25:01,376 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 232 transitions. Word has length 125 [2024-11-09 06:25:01,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:25:01,377 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 232 transitions. [2024-11-09 06:25:01,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2024-11-09 06:25:01,378 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 232 transitions. [2024-11-09 06:25:01,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-09 06:25:01,380 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:25:01,381 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:25:01,406 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7f83ba4-1b82-4609-9629-c5d63461169c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 06:25:01,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7f83ba4-1b82-4609-9629-c5d63461169c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:25:01,582 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:25:01,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:25:01,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1094158566, now seen corresponding path program 1 times [2024-11-09 06:25:01,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:25:01,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572765784] [2024-11-09 06:25:01,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:25:01,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:25:07,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:25:09,321 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 06:25:09,325 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:25:09,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572765784] [2024-11-09 06:25:09,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572765784] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:25:09,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:25:09,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 06:25:09,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245694529] [2024-11-09 06:25:09,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:25:09,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:25:09,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:25:09,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:25:09,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:25:09,328 INFO L87 Difference]: Start difference. First operand 174 states and 232 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2024-11-09 06:25:11,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:25:13,674 WARN L539 Checker$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 06:25:15,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:25:18,200 WARN L539 Checker$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 06:25:19,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:25:19,703 INFO L93 Difference]: Finished difference Result 307 states and 409 transitions. [2024-11-09 06:25:19,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:25:19,704 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 134 [2024-11-09 06:25:19,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:25:19,709 INFO L225 Difference]: With dead ends: 307 [2024-11-09 06:25:19,710 INFO L226 Difference]: Without dead ends: 174 [2024-11-09 06:25:19,711 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 06:25:19,712 INFO L432 NwaCegarLoop]: 194 mSDtfsCounter, 24 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:25:19,712 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 900 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 153 Invalid, 4 Unknown, 0 Unchecked, 10.3s Time] [2024-11-09 06:25:19,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-11-09 06:25:19,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2024-11-09 06:25:19,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 97 states have (on average 1.1546391752577319) internal successors, (112), 99 states have internal predecessors, (112), 57 states have call successors, (57), 18 states have call predecessors, (57), 19 states have return successors, (62), 56 states have call predecessors, (62), 56 states have call successors, (62) [2024-11-09 06:25:19,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 231 transitions. [2024-11-09 06:25:19,733 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 231 transitions. Word has length 134 [2024-11-09 06:25:19,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:25:19,734 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 231 transitions. [2024-11-09 06:25:19,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2024-11-09 06:25:19,734 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 231 transitions. [2024-11-09 06:25:19,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-09 06:25:19,740 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:25:19,740 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:25:19,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 06:25:19,741 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:25:19,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:25:19,741 INFO L85 PathProgramCache]: Analyzing trace with hash 767770625, now seen corresponding path program 1 times [2024-11-09 06:25:19,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:25:19,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816316234] [2024-11-09 06:25:19,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:25:19,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:25:25,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:25:27,818 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2024-11-09 06:25:27,819 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:25:27,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816316234] [2024-11-09 06:25:27,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816316234] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:25:27,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471143825] [2024-11-09 06:25:27,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:25:27,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:25:27,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7f83ba4-1b82-4609-9629-c5d63461169c/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:25:27,822 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7f83ba4-1b82-4609-9629-c5d63461169c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:25:27,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7f83ba4-1b82-4609-9629-c5d63461169c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 06:25:35,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:25:35,282 INFO L255 TraceCheckSpWp]: Trace formula consists of 4678 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 06:25:35,292 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:25:36,858 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-09 06:25:36,858 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:25:36,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471143825] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:25:36,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:25:36,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2024-11-09 06:25:36,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386745718] [2024-11-09 06:25:36,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:25:36,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 06:25:36,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:25:36,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 06:25:36,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2024-11-09 06:25:36,862 INFO L87 Difference]: Start difference. First operand 174 states and 231 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 5 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2024-11-09 06:25:38,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:25:41,220 WARN L539 Checker$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 06:25:43,503 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:25:45,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:25:48,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:25:50,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:25:53,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:25:53,083 INFO L93 Difference]: Finished difference Result 312 states and 414 transitions. [2024-11-09 06:25:53,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 06:25:53,084 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 5 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) Word has length 142 [2024-11-09 06:25:53,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:25:53,087 INFO L225 Difference]: With dead ends: 312 [2024-11-09 06:25:53,087 INFO L226 Difference]: Without dead ends: 174 [2024-11-09 06:25:53,088 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2024-11-09 06:25:53,089 INFO L432 NwaCegarLoop]: 185 mSDtfsCounter, 31 mSDsluCounter, 1030 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 3 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:25:53,089 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 1215 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 272 Invalid, 6 Unknown, 0 Unchecked, 16.1s Time] [2024-11-09 06:25:53,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-11-09 06:25:53,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2024-11-09 06:25:53,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 97 states have (on average 1.1546391752577319) internal successors, (112), 99 states have internal predecessors, (112), 57 states have call successors, (57), 18 states have call predecessors, (57), 19 states have return successors, (61), 56 states have call predecessors, (61), 56 states have call successors, (61) [2024-11-09 06:25:53,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 230 transitions. [2024-11-09 06:25:53,119 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 230 transitions. Word has length 142 [2024-11-09 06:25:53,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:25:53,123 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 230 transitions. [2024-11-09 06:25:53,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 5 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2024-11-09 06:25:53,124 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 230 transitions. [2024-11-09 06:25:53,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-09 06:25:53,126 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:25:53,127 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:25:53,162 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7f83ba4-1b82-4609-9629-c5d63461169c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 06:25:53,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7f83ba4-1b82-4609-9629-c5d63461169c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:25:53,327 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:25:53,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:25:53,328 INFO L85 PathProgramCache]: Analyzing trace with hash -898812399, now seen corresponding path program 2 times [2024-11-09 06:25:53,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:25:53,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329642032] [2024-11-09 06:25:53,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:25:53,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:25:59,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:26:01,536 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-09 06:26:01,537 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:26:01,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329642032] [2024-11-09 06:26:01,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329642032] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:26:01,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529305972] [2024-11-09 06:26:01,538 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 06:26:01,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:26:01,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7f83ba4-1b82-4609-9629-c5d63461169c/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:26:01,542 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7f83ba4-1b82-4609-9629-c5d63461169c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:26:01,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7f83ba4-1b82-4609-9629-c5d63461169c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process