./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_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_2744ea72-998b-49d8-bb31-069f19dd1c7a/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2744ea72-998b-49d8-bb31-069f19dd1c7a/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_2744ea72-998b-49d8-bb31-069f19dd1c7a/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2744ea72-998b-49d8-bb31-069f19dd1c7a/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2744ea72-998b-49d8-bb31-069f19dd1c7a/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_2744ea72-998b-49d8-bb31-069f19dd1c7a/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 dfa651ad1a3815b71299318434192d50e4a949decdd541c310285fbc30ab43ee --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 06:15:21,655 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:15:21,721 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2744ea72-998b-49d8-bb31-069f19dd1c7a/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-09 06:15:21,725 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:15:21,726 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:15:21,750 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:15:21,750 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:15:21,751 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:15:21,751 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:15:21,752 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:15:21,752 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 06:15:21,753 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 06:15:21,753 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 06:15:21,753 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 06:15:21,754 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 06:15:21,754 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 06:15:21,754 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 06:15:21,755 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 06:15:21,759 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 06:15:21,759 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 06:15:21,759 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 06:15:21,764 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 06:15:21,764 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:15:21,765 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 06:15:21,765 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 06:15:21,765 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:15:21,766 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 06:15:21,766 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:15:21,767 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 06:15:21,767 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:15:21,767 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 06:15:21,768 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:15:21,768 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:15:21,768 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 06:15:21,769 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:15:21,769 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:15:21,773 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:15:21,774 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:15:21,774 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 06:15:21,775 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 06:15:21,775 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 06:15:21,775 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:15:21,776 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 06:15:21,776 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 06:15:21,776 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_2744ea72-998b-49d8-bb31-069f19dd1c7a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2744ea72-998b-49d8-bb31-069f19dd1c7a/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfa651ad1a3815b71299318434192d50e4a949decdd541c310285fbc30ab43ee [2024-11-09 06:15:22,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:15:22,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:15:22,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:15:22,118 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:15:22,119 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:15:22,120 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2744ea72-998b-49d8-bb31-069f19dd1c7a/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i Unable to find full path for "g++" [2024-11-09 06:15:24,365 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:15:25,074 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:15:25,076 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2744ea72-998b-49d8-bb31-069f19dd1c7a/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i [2024-11-09 06:15:25,131 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2744ea72-998b-49d8-bb31-069f19dd1c7a/bin/utaipan-verify-YMUCfTKeje/data/884b67f19/edb4e6ddaefa4f289b7dc74149100a3e/FLAG2e04da731 [2024-11-09 06:15:25,155 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2744ea72-998b-49d8-bb31-069f19dd1c7a/bin/utaipan-verify-YMUCfTKeje/data/884b67f19/edb4e6ddaefa4f289b7dc74149100a3e [2024-11-09 06:15:25,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:15:25,162 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:15:25,165 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:15:25,167 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:15:25,174 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:15:25,176 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:15:25" (1/1) ... [2024-11-09 06:15:25,177 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2851a65f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:15:25, skipping insertion in model container [2024-11-09 06:15:25,177 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:15:25" (1/1) ... [2024-11-09 06:15:25,324 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:15:25,708 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_2744ea72-998b-49d8-bb31-069f19dd1c7a/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i[4501,4514] [2024-11-09 06:15:25,718 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_2744ea72-998b-49d8-bb31-069f19dd1c7a/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i[4561,4574] [2024-11-09 06:15:27,000 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:27,002 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:27,003 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:27,004 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:27,006 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:27,028 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:27,030 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:27,033 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:27,034 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:27,037 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:27,039 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:27,040 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:27,041 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,118 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,133 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,300 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,301 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,301 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,301 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,302 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,303 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,303 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,305 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,305 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,306 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,306 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,307 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,307 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,315 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,316 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,316 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,318 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,327 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,328 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,345 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,346 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,347 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,399 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:15:28,520 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 06:15:28,572 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_2744ea72-998b-49d8-bb31-069f19dd1c7a/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i[4501,4514] [2024-11-09 06:15:28,573 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_2744ea72-998b-49d8-bb31-069f19dd1c7a/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i[4561,4574] [2024-11-09 06:15:28,664 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,665 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,666 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,666 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,667 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,684 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,690 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,691 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,692 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,695 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,696 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,697 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,702 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,849 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,857 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,864 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7771-7782] [2024-11-09 06:15:28,899 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,900 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,900 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,902 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,903 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,903 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,904 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,904 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,905 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,905 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,905 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,905 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,906 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,907 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,908 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,909 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,910 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,913 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,913 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,923 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,925 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,925 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:15:28,937 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:15:29,256 INFO L204 MainTranslator]: Completed translation [2024-11-09 06:15:29,257 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:15:29 WrapperNode [2024-11-09 06:15:29,257 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 06:15:29,258 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 06:15:29,258 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 06:15:29,258 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 06:15:29,264 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:15:29" (1/1) ... [2024-11-09 06:15:29,368 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:15:29" (1/1) ... [2024-11-09 06:15:29,497 INFO L138 Inliner]: procedures = 686, calls = 1892, calls flagged for inlining = 57, calls inlined = 17, statements flattened = 1176 [2024-11-09 06:15:29,502 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 06:15:29,503 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 06:15:29,503 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 06:15:29,503 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 06:15:29,518 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:15:29" (1/1) ... [2024-11-09 06:15:29,518 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:15:29" (1/1) ... [2024-11-09 06:15:29,533 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:15:29" (1/1) ... [2024-11-09 06:15:29,533 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:15:29" (1/1) ... [2024-11-09 06:15:29,610 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:15:29" (1/1) ... [2024-11-09 06:15:29,624 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:15:29" (1/1) ... [2024-11-09 06:15:29,637 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:15:29" (1/1) ... [2024-11-09 06:15:29,644 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:15:29" (1/1) ... [2024-11-09 06:15:29,660 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 06:15:29,661 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 06:15:29,661 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 06:15:29,661 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 06:15:29,663 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:15:29" (1/1) ... [2024-11-09 06:15:29,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:15:29,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2744ea72-998b-49d8-bb31-069f19dd1c7a/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:15:29,719 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2744ea72-998b-49d8-bb31-069f19dd1c7a/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 06:15:29,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2744ea72-998b-49d8-bb31-069f19dd1c7a/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 06:15:29,755 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2024-11-09 06:15:29,755 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2024-11-09 06:15:29,755 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_init_dynamic [2024-11-09 06:15:29,755 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_init_dynamic [2024-11-09 06:15:29,756 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2024-11-09 06:15:29,756 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2024-11-09 06:15:29,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 06:15:29,756 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2024-11-09 06:15:29,756 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2024-11-09 06:15:29,756 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2024-11-09 06:15:29,757 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2024-11-09 06:15:29,757 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-09 06:15:29,757 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-09 06:15:29,757 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2024-11-09 06:15:29,758 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2024-11-09 06:15:29,758 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2024-11-09 06:15:29,758 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2024-11-09 06:15:29,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-09 06:15:29,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 06:15:29,759 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-11-09 06:15:29,759 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-11-09 06:15:29,759 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 06:15:29,759 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 06:15:29,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 06:15:29,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 06:15:29,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-09 06:15:29,760 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2024-11-09 06:15:29,760 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2024-11-09 06:15:29,760 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2024-11-09 06:15:29,760 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2024-11-09 06:15:29,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 06:15:29,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 06:15:29,761 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-09 06:15:29,761 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-09 06:15:29,761 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2024-11-09 06:15:29,761 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2024-11-09 06:15:29,762 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2024-11-09 06:15:29,762 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2024-11-09 06:15:29,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-09 06:15:29,762 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2024-11-09 06:15:29,762 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2024-11-09 06:15:29,762 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2024-11-09 06:15:29,762 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2024-11-09 06:15:29,763 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2024-11-09 06:15:29,763 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2024-11-09 06:15:29,763 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2024-11-09 06:15:29,763 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2024-11-09 06:15:29,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2024-11-09 06:15:29,763 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2024-11-09 06:15:29,763 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-09 06:15:29,764 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-09 06:15:29,764 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2024-11-09 06:15:29,764 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2024-11-09 06:15:29,764 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2024-11-09 06:15:29,764 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2024-11-09 06:15:29,764 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2024-11-09 06:15:29,765 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2024-11-09 06:15:29,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 06:15:29,765 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2024-11-09 06:15:29,765 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2024-11-09 06:15:29,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 06:15:29,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-09 06:15:29,766 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_push_ref [2024-11-09 06:15:29,766 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_push_ref [2024-11-09 06:15:29,766 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2024-11-09 06:15:29,766 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2024-11-09 06:15:29,766 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-09 06:15:29,767 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-09 06:15:29,767 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2024-11-09 06:15:29,767 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2024-11-09 06:15:29,767 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2024-11-09 06:15:29,767 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2024-11-09 06:15:29,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 06:15:29,768 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2024-11-09 06:15:29,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2024-11-09 06:15:29,768 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_set_at [2024-11-09 06:15:29,768 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_set_at [2024-11-09 06:15:29,768 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2024-11-09 06:15:29,768 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2024-11-09 06:15:29,769 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-09 06:15:29,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-09 06:15:29,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 06:15:30,241 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 06:15:30,245 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 06:15:35,707 INFO L? ?]: Removed 296 outVars from TransFormulas that were not future-live. [2024-11-09 06:15:35,707 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 06:15:36,435 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 06:15:36,436 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 06:15:36,437 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:15:36 BoogieIcfgContainer [2024-11-09 06:15:36,437 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 06:15:36,439 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 06:15:36,440 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 06:15:36,444 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 06:15:36,444 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:15:25" (1/3) ... [2024-11-09 06:15:36,445 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29b2a38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:15:36, skipping insertion in model container [2024-11-09 06:15:36,445 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:15:29" (2/3) ... [2024-11-09 06:15:36,446 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29b2a38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:15:36, skipping insertion in model container [2024-11-09 06:15:36,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:15:36" (3/3) ... [2024-11-09 06:15:36,447 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_push_ref_harness.i [2024-11-09 06:15:36,474 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 06:15:36,475 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-09 06:15:36,586 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:15:36,598 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;@35f7b4bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:15:36,598 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-09 06:15:36,608 INFO L276 IsEmpty]: Start isEmpty. Operand has 480 states, 245 states have (on average 1.2040816326530612) internal successors, (295), 248 states have internal predecessors, (295), 199 states have call successors, (199), 34 states have call predecessors, (199), 34 states have return successors, (199), 199 states have call predecessors, (199), 199 states have call successors, (199) [2024-11-09 06:15:36,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-09 06:15:36,627 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:15:36,628 INFO L215 NwaCegarLoop]: trace histogram [11, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:15:36,629 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:15:36,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:15:36,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1869870242, now seen corresponding path program 1 times [2024-11-09 06:15:36,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:15:36,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323000140] [2024-11-09 06:15:36,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:15:36,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:15:45,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:15:48,076 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-11-09 06:15:48,078 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:15:48,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323000140] [2024-11-09 06:15:48,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323000140] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:15:48,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996187862] [2024-11-09 06:15:48,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:15:48,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:15:48,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2744ea72-998b-49d8-bb31-069f19dd1c7a/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:15:48,085 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2744ea72-998b-49d8-bb31-069f19dd1c7a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:15:48,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2744ea72-998b-49d8-bb31-069f19dd1c7a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 06:15:57,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:15:57,716 INFO L255 TraceCheckSpWp]: Trace formula consists of 4526 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 06:15:57,738 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:15:58,263 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-11-09 06:15:58,264 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:15:58,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996187862] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:15:58,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:15:58,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-09 06:15:58,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477507442] [2024-11-09 06:15:58,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:15:58,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:15:58,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:15:58,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:15:58,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:15:58,317 INFO L87 Difference]: Start difference. First operand has 480 states, 245 states have (on average 1.2040816326530612) internal successors, (295), 248 states have internal predecessors, (295), 199 states have call successors, (199), 34 states have call predecessors, (199), 34 states have return successors, (199), 199 states have call predecessors, (199), 199 states have call successors, (199) Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2024-11-09 06:16:00,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:16:02,704 WARN L539 Checker$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 06:16:04,973 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 06:16:07,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:16:07,482 INFO L93 Difference]: Finished difference Result 919 states and 1393 transitions. [2024-11-09 06:16:07,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:16:07,485 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 147 [2024-11-09 06:16:07,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:16:07,504 INFO L225 Difference]: With dead ends: 919 [2024-11-09 06:16:07,504 INFO L226 Difference]: Without dead ends: 479 [2024-11-09 06:16:07,515 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:16:07,519 INFO L432 NwaCegarLoop]: 627 mSDtfsCounter, 6 mSDsluCounter, 1834 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2461 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:16:07,520 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2461 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 249 Invalid, 3 Unknown, 0 Unchecked, 9.0s Time] [2024-11-09 06:16:07,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2024-11-09 06:16:07,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2024-11-09 06:16:07,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 244 states have (on average 1.1926229508196722) internal successors, (291), 247 states have internal predecessors, (291), 199 states have call successors, (199), 34 states have call predecessors, (199), 34 states have return successors, (205), 197 states have call predecessors, (205), 197 states have call successors, (205) [2024-11-09 06:16:07,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 695 transitions. [2024-11-09 06:16:07,695 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 695 transitions. Word has length 147 [2024-11-09 06:16:07,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:16:07,696 INFO L471 AbstractCegarLoop]: Abstraction has 479 states and 695 transitions. [2024-11-09 06:16:07,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2024-11-09 06:16:07,697 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 695 transitions. [2024-11-09 06:16:07,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-09 06:16:07,704 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:16:07,704 INFO L215 NwaCegarLoop]: trace histogram [11, 6, 4, 4, 4, 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 06:16:07,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2744ea72-998b-49d8-bb31-069f19dd1c7a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 06:16:07,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2744ea72-998b-49d8-bb31-069f19dd1c7a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-09 06:16:07,906 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:16:07,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:16:07,907 INFO L85 PathProgramCache]: Analyzing trace with hash 683983573, now seen corresponding path program 1 times [2024-11-09 06:16:07,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:16:07,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354642106] [2024-11-09 06:16:07,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:16:07,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:16:15,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:16:17,490 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2024-11-09 06:16:17,491 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:16:17,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354642106] [2024-11-09 06:16:17,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354642106] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:16:17,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137018021] [2024-11-09 06:16:17,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:16:17,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:16:17,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2744ea72-998b-49d8-bb31-069f19dd1c7a/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:16:17,495 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2744ea72-998b-49d8-bb31-069f19dd1c7a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:16:17,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2744ea72-998b-49d8-bb31-069f19dd1c7a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 06:16:26,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:16:26,159 INFO L255 TraceCheckSpWp]: Trace formula consists of 4576 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 06:16:26,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:16:27,216 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-11-09 06:16:27,217 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:16:27,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137018021] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:16:27,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:16:27,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-09 06:16:27,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226064537] [2024-11-09 06:16:27,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:16:27,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:16:27,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:16:27,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:16:27,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-09 06:16:27,222 INFO L87 Difference]: Start difference. First operand 479 states and 695 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2024-11-09 06:16:29,324 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 06:16:31,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:16:33,929 WARN L539 Checker$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 06:16:36,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:16:38,442 WARN L539 Checker$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 06:16:44,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:16:44,886 INFO L93 Difference]: Finished difference Result 929 states and 1389 transitions. [2024-11-09 06:16:44,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 06:16:44,888 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) Word has length 155 [2024-11-09 06:16:44,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:16:44,899 INFO L225 Difference]: With dead ends: 929 [2024-11-09 06:16:44,899 INFO L226 Difference]: Without dead ends: 492 [2024-11-09 06:16:44,904 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-09 06:16:44,906 INFO L432 NwaCegarLoop]: 599 mSDtfsCounter, 12 mSDsluCounter, 2879 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 3478 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:16:44,906 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 3478 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 632 Invalid, 5 Unknown, 0 Unchecked, 17.4s Time] [2024-11-09 06:16:44,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2024-11-09 06:16:44,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 490. [2024-11-09 06:16:44,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 252 states have (on average 1.1944444444444444) internal successors, (301), 255 states have internal predecessors, (301), 201 states have call successors, (201), 34 states have call predecessors, (201), 35 states have return successors, (239), 200 states have call predecessors, (239), 199 states have call successors, (239) [2024-11-09 06:16:44,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 741 transitions. [2024-11-09 06:16:44,974 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 741 transitions. Word has length 155 [2024-11-09 06:16:44,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:16:44,975 INFO L471 AbstractCegarLoop]: Abstraction has 490 states and 741 transitions. [2024-11-09 06:16:44,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2024-11-09 06:16:44,976 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 741 transitions. [2024-11-09 06:16:44,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-09 06:16:44,979 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:16:44,980 INFO L215 NwaCegarLoop]: trace histogram [11, 6, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:16:45,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2744ea72-998b-49d8-bb31-069f19dd1c7a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 06:16:45,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2744ea72-998b-49d8-bb31-069f19dd1c7a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:16:45,185 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:16:45,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:16:45,186 INFO L85 PathProgramCache]: Analyzing trace with hash -208733468, now seen corresponding path program 1 times [2024-11-09 06:16:45,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:16:45,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199318969] [2024-11-09 06:16:45,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:16:45,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:16:51,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:16:54,021 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-11-09 06:16:54,021 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:16:54,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199318969] [2024-11-09 06:16:54,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199318969] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:16:54,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205228554] [2024-11-09 06:16:54,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:16:54,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:16:54,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2744ea72-998b-49d8-bb31-069f19dd1c7a/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:16:54,027 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2744ea72-998b-49d8-bb31-069f19dd1c7a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:16:54,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2744ea72-998b-49d8-bb31-069f19dd1c7a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 06:17:03,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:17:03,093 INFO L255 TraceCheckSpWp]: Trace formula consists of 4680 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 06:17:03,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:17:03,993 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-11-09 06:17:03,993 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:17:03,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205228554] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:17:03,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:17:03,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-11-09 06:17:03,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448126339] [2024-11-09 06:17:03,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:17:03,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:17:03,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:17:03,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:17:03,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-09 06:17:03,997 INFO L87 Difference]: Start difference. First operand 490 states and 741 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 4 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) [2024-11-09 06:17:06,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:17:08,352 WARN L539 Checker$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 06:17:10,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:17:12,912 WARN L539 Checker$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 06:17:17,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:17:17,075 INFO L93 Difference]: Finished difference Result 944 states and 1446 transitions. [2024-11-09 06:17:17,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:17:17,076 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 4 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) Word has length 164 [2024-11-09 06:17:17,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:17:17,084 INFO L225 Difference]: With dead ends: 944 [2024-11-09 06:17:17,085 INFO L226 Difference]: Without dead ends: 496 [2024-11-09 06:17:17,089 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-09 06:17:17,090 INFO L432 NwaCegarLoop]: 625 mSDtfsCounter, 11 mSDsluCounter, 2429 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 3054 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:17:17,091 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 3054 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 328 Invalid, 4 Unknown, 0 Unchecked, 13.0s Time] [2024-11-09 06:17:17,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2024-11-09 06:17:17,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 490. [2024-11-09 06:17:17,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 252 states have (on average 1.1944444444444444) internal successors, (301), 255 states have internal predecessors, (301), 201 states have call successors, (201), 34 states have call predecessors, (201), 35 states have return successors, (239), 200 states have call predecessors, (239), 199 states have call successors, (239) [2024-11-09 06:17:17,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 741 transitions. [2024-11-09 06:17:17,159 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 741 transitions. Word has length 164 [2024-11-09 06:17:17,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:17:17,161 INFO L471 AbstractCegarLoop]: Abstraction has 490 states and 741 transitions. [2024-11-09 06:17:17,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 4 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) [2024-11-09 06:17:17,162 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 741 transitions. [2024-11-09 06:17:17,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-09 06:17:17,168 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:17:17,169 INFO L215 NwaCegarLoop]: trace histogram [11, 6, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:17:17,210 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2744ea72-998b-49d8-bb31-069f19dd1c7a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 06:17:17,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2744ea72-998b-49d8-bb31-069f19dd1c7a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:17:17,370 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:17:17,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:17:17,370 INFO L85 PathProgramCache]: Analyzing trace with hash -638045795, now seen corresponding path program 1 times [2024-11-09 06:17:17,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:17:17,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428556451] [2024-11-09 06:17:17,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:17:17,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:17:24,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:17:27,014 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2024-11-09 06:17:27,014 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:17:27,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428556451] [2024-11-09 06:17:27,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428556451] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:17:27,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896977054] [2024-11-09 06:17:27,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:17:27,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:17:27,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2744ea72-998b-49d8-bb31-069f19dd1c7a/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:17:27,018 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2744ea72-998b-49d8-bb31-069f19dd1c7a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:17:27,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2744ea72-998b-49d8-bb31-069f19dd1c7a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 06:17:35,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:17:35,822 INFO L255 TraceCheckSpWp]: Trace formula consists of 4720 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 06:17:35,829 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:17:37,410 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-09 06:17:37,410 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:17:37,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896977054] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:17:37,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:17:37,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2024-11-09 06:17:37,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795153954] [2024-11-09 06:17:37,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:17:37,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 06:17:37,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:17:37,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 06:17:37,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-09 06:17:37,415 INFO L87 Difference]: Start difference. First operand 490 states and 741 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 5 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (33), 5 states have call predecessors, (33), 5 states have call successors, (33) [2024-11-09 06:17:39,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:17:41,776 WARN L539 Checker$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 06:17:44,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:17:46,348 WARN L539 Checker$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 06:17:48,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:17:50,912 WARN L539 Checker$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 06:17:58,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:17:58,768 INFO L93 Difference]: Finished difference Result 947 states and 1444 transitions. [2024-11-09 06:17:58,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 06:17:58,769 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 5 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (33), 5 states have call predecessors, (33), 5 states have call successors, (33) Word has length 172 [2024-11-09 06:17:58,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:17:58,776 INFO L225 Difference]: With dead ends: 947 [2024-11-09 06:17:58,777 INFO L226 Difference]: Without dead ends: 499 [2024-11-09 06:17:58,781 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-11-09 06:17:58,782 INFO L432 NwaCegarLoop]: 592 mSDtfsCounter, 21 mSDsluCounter, 3421 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 7 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 4013 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.9s IncrementalHoareTripleChecker+Time [2024-11-09 06:17:58,782 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 4013 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 742 Invalid, 6 Unknown, 0 Unchecked, 20.9s Time] [2024-11-09 06:17:58,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2024-11-09 06:17:58,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 490. [2024-11-09 06:17:58,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 252 states have (on average 1.1944444444444444) internal successors, (301), 255 states have internal predecessors, (301), 201 states have call successors, (201), 34 states have call predecessors, (201), 35 states have return successors, (239), 200 states have call predecessors, (239), 199 states have call successors, (239) [2024-11-09 06:17:58,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 741 transitions. [2024-11-09 06:17:58,824 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 741 transitions. Word has length 172 [2024-11-09 06:17:58,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:17:58,825 INFO L471 AbstractCegarLoop]: Abstraction has 490 states and 741 transitions. [2024-11-09 06:17:58,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 5 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (33), 5 states have call predecessors, (33), 5 states have call successors, (33) [2024-11-09 06:17:58,826 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 741 transitions. [2024-11-09 06:17:58,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-09 06:17:58,829 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:17:58,829 INFO L215 NwaCegarLoop]: trace histogram [11, 6, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:17:58,861 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2744ea72-998b-49d8-bb31-069f19dd1c7a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 06:17:59,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2744ea72-998b-49d8-bb31-069f19dd1c7a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:17:59,030 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:17:59,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:17:59,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1577239692, now seen corresponding path program 2 times [2024-11-09 06:17:59,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:17:59,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546708511] [2024-11-09 06:17:59,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:17:59,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:18:05,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:08,098 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2024-11-09 06:18:08,099 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:18:08,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546708511] [2024-11-09 06:18:08,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546708511] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:18:08,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:18:08,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 06:18:08,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623758703] [2024-11-09 06:18:08,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:18:08,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:18:08,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:18:08,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:18:08,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:18:08,103 INFO L87 Difference]: Start difference. First operand 490 states and 741 transitions. Second operand has 7 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 4 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (33), 3 states have call predecessors, (33), 4 states have call successors, (33) [2024-11-09 06:18:10,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:18:12,473 WARN L539 Checker$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 06:18:14,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:18:17,037 WARN L539 Checker$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 06:18:19,323 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 06:18:23,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:18:23,866 INFO L93 Difference]: Finished difference Result 929 states and 1416 transitions. [2024-11-09 06:18:23,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 06:18:23,867 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 4 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (33), 3 states have call predecessors, (33), 4 states have call successors, (33) Word has length 181 [2024-11-09 06:18:23,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:18:23,876 INFO L225 Difference]: With dead ends: 929 [2024-11-09 06:18:23,880 INFO L226 Difference]: Without dead ends: 492 [2024-11-09 06:18:23,884 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:18:23,886 INFO L432 NwaCegarLoop]: 624 mSDtfsCounter, 73 mSDsluCounter, 2966 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 59 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 3590 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2024-11-09 06:18:23,886 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 3590 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 354 Invalid, 5 Unknown, 0 Unchecked, 15.6s Time] [2024-11-09 06:18:23,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2024-11-09 06:18:23,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 492. [2024-11-09 06:18:23,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 253 states have (on average 1.1936758893280632) internal successors, (302), 257 states have internal predecessors, (302), 201 states have call successors, (201), 34 states have call predecessors, (201), 36 states have return successors, (243), 200 states have call predecessors, (243), 199 states have call successors, (243) [2024-11-09 06:18:23,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 746 transitions. [2024-11-09 06:18:23,936 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 746 transitions. Word has length 181 [2024-11-09 06:18:23,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:18:23,937 INFO L471 AbstractCegarLoop]: Abstraction has 492 states and 746 transitions. [2024-11-09 06:18:23,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 4 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (33), 3 states have call predecessors, (33), 4 states have call successors, (33) [2024-11-09 06:18:23,937 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 746 transitions. [2024-11-09 06:18:23,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-11-09 06:18:23,943 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:18:23,944 INFO L215 NwaCegarLoop]: trace histogram [11, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 06:18:23,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 06:18:23,944 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:18:23,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:18:23,945 INFO L85 PathProgramCache]: Analyzing trace with hash -321015071, now seen corresponding path program 1 times [2024-11-09 06:18:23,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:18:23,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374871462] [2024-11-09 06:18:23,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:23,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:18:30,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:33,559 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2024-11-09 06:18:33,559 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:18:33,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374871462] [2024-11-09 06:18:33,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374871462] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:18:33,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918817634] [2024-11-09 06:18:33,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:33,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:18:33,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2744ea72-998b-49d8-bb31-069f19dd1c7a/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:18:33,562 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2744ea72-998b-49d8-bb31-069f19dd1c7a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:18:33,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2744ea72-998b-49d8-bb31-069f19dd1c7a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 06:18:43,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:43,069 INFO L255 TraceCheckSpWp]: Trace formula consists of 4874 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 06:18:43,080 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:18:45,197 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2024-11-09 06:18:45,198 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:18:45,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918817634] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:18:45,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:18:45,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 16 [2024-11-09 06:18:45,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224349019] [2024-11-09 06:18:45,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:18:45,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 06:18:45,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:18:45,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 06:18:45,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-11-09 06:18:45,201 INFO L87 Difference]: Start difference. First operand 492 states and 746 transitions. Second operand has 9 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 5 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 4 states have call predecessors, (34), 5 states have call successors, (34) [2024-11-09 06:18:47,273 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 06:18:49,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:18:51,853 WARN L539 Checker$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 06:18:54,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:18:56,408 WARN L539 Checker$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 06:18:58,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:19:00,979 WARN L539 Checker$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 06:19:09,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:19:09,959 INFO L93 Difference]: Finished difference Result 939 states and 1434 transitions. [2024-11-09 06:19:09,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 06:19:09,960 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 5 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 4 states have call predecessors, (34), 5 states have call successors, (34) Word has length 189 [2024-11-09 06:19:09,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:19:09,966 INFO L225 Difference]: With dead ends: 939 [2024-11-09 06:19:09,967 INFO L226 Difference]: Without dead ends: 500 [2024-11-09 06:19:09,970 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2024-11-09 06:19:09,972 INFO L432 NwaCegarLoop]: 595 mSDtfsCounter, 79 mSDsluCounter, 3949 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 66 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 4544 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:19:09,972 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 4544 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 809 Invalid, 7 Unknown, 0 Unchecked, 24.3s Time] [2024-11-09 06:19:09,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2024-11-09 06:19:10,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 498. [2024-11-09 06:19:10,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 258 states have (on average 1.193798449612403) internal successors, (308), 261 states have internal predecessors, (308), 202 states have call successors, (202), 34 states have call predecessors, (202), 36 states have return successors, (244), 202 states have call predecessors, (244), 200 states have call successors, (244) [2024-11-09 06:19:10,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 754 transitions. [2024-11-09 06:19:10,015 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 754 transitions. Word has length 189 [2024-11-09 06:19:10,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:19:10,016 INFO L471 AbstractCegarLoop]: Abstraction has 498 states and 754 transitions. [2024-11-09 06:19:10,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 5 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 4 states have call predecessors, (34), 5 states have call successors, (34) [2024-11-09 06:19:10,017 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 754 transitions. [2024-11-09 06:19:10,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-09 06:19:10,021 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:19:10,021 INFO L215 NwaCegarLoop]: trace histogram [11, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:19:10,064 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2744ea72-998b-49d8-bb31-069f19dd1c7a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 06:19:10,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2744ea72-998b-49d8-bb31-069f19dd1c7a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:19:10,222 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:19:10,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:19:10,223 INFO L85 PathProgramCache]: Analyzing trace with hash -448493382, now seen corresponding path program 2 times [2024-11-09 06:19:10,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:19:10,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525861811] [2024-11-09 06:19:10,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:10,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:19:16,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:19,093 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2024-11-09 06:19:19,093 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:19:19,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525861811] [2024-11-09 06:19:19,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525861811] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:19:19,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:19:19,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 06:19:19,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53855297] [2024-11-09 06:19:19,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:19:19,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 06:19:19,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:19:19,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 06:19:19,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:19:19,097 INFO L87 Difference]: Start difference. First operand 498 states and 754 transitions. Second operand has 8 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 5 states have call successors, (37), 3 states have call predecessors, (37), 2 states have return successors, (34), 4 states have call predecessors, (34), 5 states have call successors, (34) [2024-11-09 06:19:21,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:19:23,474 WARN L539 Checker$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 06:19:25,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:19:28,020 WARN L539 Checker$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 06:19:30,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:19:32,577 WARN L539 Checker$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 06:19:37,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:19:37,483 INFO L93 Difference]: Finished difference Result 949 states and 1449 transitions. [2024-11-09 06:19:37,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 06:19:37,483 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 5 states have call successors, (37), 3 states have call predecessors, (37), 2 states have return successors, (34), 4 states have call predecessors, (34), 5 states have call successors, (34) Word has length 198 [2024-11-09 06:19:37,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:19:37,489 INFO L225 Difference]: With dead ends: 949 [2024-11-09 06:19:37,489 INFO L226 Difference]: Without dead ends: 504 [2024-11-09 06:19:37,493 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 06:19:37,494 INFO L432 NwaCegarLoop]: 623 mSDtfsCounter, 78 mSDsluCounter, 3559 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 60 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 4182 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:19:37,494 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 4182 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 443 Invalid, 6 Unknown, 0 Unchecked, 18.2s Time] [2024-11-09 06:19:37,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2024-11-09 06:19:37,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 498. [2024-11-09 06:19:37,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 258 states have (on average 1.193798449612403) internal successors, (308), 261 states have internal predecessors, (308), 202 states have call successors, (202), 34 states have call predecessors, (202), 36 states have return successors, (244), 202 states have call predecessors, (244), 200 states have call successors, (244) [2024-11-09 06:19:37,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 754 transitions. [2024-11-09 06:19:37,536 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 754 transitions. Word has length 198 [2024-11-09 06:19:37,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:19:37,537 INFO L471 AbstractCegarLoop]: Abstraction has 498 states and 754 transitions. [2024-11-09 06:19:37,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 5 states have call successors, (37), 3 states have call predecessors, (37), 2 states have return successors, (34), 4 states have call predecessors, (34), 5 states have call successors, (34) [2024-11-09 06:19:37,538 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 754 transitions. [2024-11-09 06:19:37,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-09 06:19:37,541 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:19:37,542 INFO L215 NwaCegarLoop]: trace histogram [11, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:19:37,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 06:19:37,542 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:19:37,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:19:37,543 INFO L85 PathProgramCache]: Analyzing trace with hash 263328610, now seen corresponding path program 1 times [2024-11-09 06:19:37,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:19:37,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734902943] [2024-11-09 06:19:37,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:37,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:19:44,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:47,152 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2024-11-09 06:19:47,152 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:19:47,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734902943] [2024-11-09 06:19:47,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734902943] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:19:47,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791851509] [2024-11-09 06:19:47,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:47,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:19:47,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2744ea72-998b-49d8-bb31-069f19dd1c7a/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:19:47,156 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2744ea72-998b-49d8-bb31-069f19dd1c7a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:19:47,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2744ea72-998b-49d8-bb31-069f19dd1c7a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 06:19:57,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:57,286 INFO L255 TraceCheckSpWp]: Trace formula consists of 5122 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 06:19:57,296 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:19:59,187 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2024-11-09 06:19:59,187 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:19:59,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791851509] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:19:59,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:19:59,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2024-11-09 06:19:59,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453156186] [2024-11-09 06:19:59,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:19:59,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 06:19:59,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:19:59,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 06:19:59,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-09 06:19:59,191 INFO L87 Difference]: Start difference. First operand 498 states and 754 transitions. Second operand has 8 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 5 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (33), 4 states have call predecessors, (33), 5 states have call successors, (33) [2024-11-09 06:20:01,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:20:03,549 WARN L539 Checker$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 06:20:05,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:20:08,111 WARN L539 Checker$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 06:20:10,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:20:12,683 WARN L539 Checker$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 06:20:19,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:20:19,932 INFO L93 Difference]: Finished difference Result 938 states and 1424 transitions. [2024-11-09 06:20:19,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 06:20:19,934 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 5 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (33), 4 states have call predecessors, (33), 5 states have call successors, (33) Word has length 215 [2024-11-09 06:20:19,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:20:19,941 INFO L225 Difference]: With dead ends: 938 [2024-11-09 06:20:19,941 INFO L226 Difference]: Without dead ends: 498 [2024-11-09 06:20:19,945 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2024-11-09 06:20:19,946 INFO L432 NwaCegarLoop]: 601 mSDtfsCounter, 80 mSDsluCounter, 3393 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 65 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 3994 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:20:19,946 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 3994 Invalid, 687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 616 Invalid, 6 Unknown, 0 Unchecked, 20.4s Time] [2024-11-09 06:20:19,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2024-11-09 06:20:19,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 498. [2024-11-09 06:20:19,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 258 states have (on average 1.193798449612403) internal successors, (308), 261 states have internal predecessors, (308), 202 states have call successors, (202), 34 states have call predecessors, (202), 36 states have return successors, (241), 202 states have call predecessors, (241), 200 states have call successors, (241) [2024-11-09 06:20:19,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 751 transitions. [2024-11-09 06:20:19,990 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 751 transitions. Word has length 215 [2024-11-09 06:20:19,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:20:19,991 INFO L471 AbstractCegarLoop]: Abstraction has 498 states and 751 transitions. [2024-11-09 06:20:19,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 5 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (33), 4 states have call predecessors, (33), 5 states have call successors, (33) [2024-11-09 06:20:19,992 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 751 transitions. [2024-11-09 06:20:19,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2024-11-09 06:20:19,996 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:20:19,996 INFO L215 NwaCegarLoop]: trace histogram [11, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:20:20,044 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2744ea72-998b-49d8-bb31-069f19dd1c7a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 06:20:20,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2744ea72-998b-49d8-bb31-069f19dd1c7a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-09 06:20:20,198 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:20:20,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:20:20,198 INFO L85 PathProgramCache]: Analyzing trace with hash -460087439, now seen corresponding path program 2 times [2024-11-09 06:20:20,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:20:20,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833874174] [2024-11-09 06:20:20,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:20:20,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:20:27,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:20:30,531 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2024-11-09 06:20:30,531 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:20:30,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833874174] [2024-11-09 06:20:30,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833874174] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:20:30,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819940160] [2024-11-09 06:20:30,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 06:20:30,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:20:30,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2744ea72-998b-49d8-bb31-069f19dd1c7a/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:20:30,533 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2744ea72-998b-49d8-bb31-069f19dd1c7a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:20:30,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2744ea72-998b-49d8-bb31-069f19dd1c7a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process