./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad7caa3-bda2-4e5d-91c6-9d04f9738f6b/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad7caa3-bda2-4e5d-91c6-9d04f9738f6b/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad7caa3-bda2-4e5d-91c6-9d04f9738f6b/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad7caa3-bda2-4e5d-91c6-9d04f9738f6b/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad7caa3-bda2-4e5d-91c6-9d04f9738f6b/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad7caa3-bda2-4e5d-91c6-9d04f9738f6b/bin/utaipan-verify-sOmjnqqW8E --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 c5ce5ecaf845e6855240a1053cf9bb98448187512cca05d9c176538088e49244 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:09:43,453 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:09:43,554 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad7caa3-bda2-4e5d-91c6-9d04f9738f6b/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-14 04:09:43,563 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:09:43,563 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:09:43,599 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:09:43,600 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:09:43,600 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:09:43,601 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:09:43,601 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:09:43,601 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:09:43,601 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:09:43,601 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:09:43,601 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 04:09:43,601 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:09:43,601 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:09:43,603 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 04:09:43,603 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 04:09:43,604 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:09:43,605 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 04:09:43,605 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 04:09:43,605 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 04:09:43,606 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:09:43,606 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 04:09:43,606 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 04:09:43,606 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:09:43,606 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 04:09:43,606 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:09:43,606 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 04:09:43,607 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:09:43,607 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 04:09:43,607 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:09:43,607 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:09:43,607 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:09:43,607 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:09:43,607 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:09:43,607 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:09:43,607 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:09:43,608 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 04:09:43,608 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 04:09:43,608 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 04:09:43,608 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:09:43,608 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:09:43,608 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 04:09:43,608 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_cad7caa3-bda2-4e5d-91c6-9d04f9738f6b/bin/utaipan-verify-sOmjnqqW8E 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 -> c5ce5ecaf845e6855240a1053cf9bb98448187512cca05d9c176538088e49244 [2024-11-14 04:09:43,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:09:43,945 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:09:43,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:09:43,952 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:09:43,952 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:09:43,953 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad7caa3-bda2-4e5d-91c6-9d04f9738f6b/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness_negated.i Unable to find full path for "g++" [2024-11-14 04:09:46,202 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:09:47,113 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:09:47,116 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad7caa3-bda2-4e5d-91c6-9d04f9738f6b/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness_negated.i [2024-11-14 04:09:47,172 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad7caa3-bda2-4e5d-91c6-9d04f9738f6b/bin/utaipan-verify-sOmjnqqW8E/data/3e208ef77/17c3d93164ba4501bf34a267bf52034b/FLAG9418c1423 [2024-11-14 04:09:47,197 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad7caa3-bda2-4e5d-91c6-9d04f9738f6b/bin/utaipan-verify-sOmjnqqW8E/data/3e208ef77/17c3d93164ba4501bf34a267bf52034b [2024-11-14 04:09:47,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:09:47,202 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:09:47,205 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:09:47,205 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:09:47,212 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:09:47,213 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:09:47" (1/1) ... [2024-11-14 04:09:47,216 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c2b7c23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:09:47, skipping insertion in model container [2024-11-14 04:09:47,217 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:09:47" (1/1) ... [2024-11-14 04:09:47,355 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:09:47,759 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_cad7caa3-bda2-4e5d-91c6-9d04f9738f6b/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness_negated.i[4496,4509] [2024-11-14 04:09:47,771 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_cad7caa3-bda2-4e5d-91c6-9d04f9738f6b/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness_negated.i[4556,4569] [2024-11-14 04:09:49,067 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:49,068 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:49,069 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:49,069 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:49,075 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:49,103 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:49,103 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:49,106 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:49,106 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:49,109 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:49,110 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:49,111 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:49,111 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:49,869 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:49,876 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:49,958 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:49,959 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:49,959 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:49,959 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:49,959 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:49,960 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:49,960 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:49,961 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:49,961 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:49,961 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:49,962 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:49,962 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:49,962 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:49,966 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:49,966 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:49,967 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:49,967 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:49,971 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:49,971 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:49,980 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:49,981 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:49,981 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:50,001 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:09:50,039 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 04:09:50,051 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_cad7caa3-bda2-4e5d-91c6-9d04f9738f6b/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness_negated.i[4496,4509] [2024-11-14 04:09:50,051 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_cad7caa3-bda2-4e5d-91c6-9d04f9738f6b/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness_negated.i[4556,4569] [2024-11-14 04:09:50,110 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:50,111 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:50,111 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:50,111 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:50,112 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:50,120 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:50,160 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:50,161 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:50,162 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:50,163 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:50,163 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:50,165 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:50,165 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:50,250 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:50,256 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:50,264 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7739-7750] [2024-11-14 04:09:50,284 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:50,285 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:50,285 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:50,285 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:50,285 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:50,286 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:50,286 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:50,287 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:50,288 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:50,288 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:50,288 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:50,288 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:50,288 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:50,289 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:50,290 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:50,290 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:50,290 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:50,293 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:50,293 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:50,299 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:50,300 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:50,300 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 04:09:50,309 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:09:50,522 INFO L204 MainTranslator]: Completed translation [2024-11-14 04:09:50,522 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:09:50 WrapperNode [2024-11-14 04:09:50,523 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:09:50,524 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 04:09:50,524 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 04:09:50,524 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 04:09:50,530 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:09:50" (1/1) ... [2024-11-14 04:09:50,611 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:09:50" (1/1) ... [2024-11-14 04:09:50,724 INFO L138 Inliner]: procedures = 686, calls = 1930, calls flagged for inlining = 59, calls inlined = 15, statements flattened = 1059 [2024-11-14 04:09:50,724 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 04:09:50,730 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 04:09:50,730 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 04:09:50,730 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 04:09:50,739 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:09:50" (1/1) ... [2024-11-14 04:09:50,739 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:09:50" (1/1) ... [2024-11-14 04:09:50,751 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:09:50" (1/1) ... [2024-11-14 04:09:50,752 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:09:50" (1/1) ... [2024-11-14 04:09:50,805 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:09:50" (1/1) ... [2024-11-14 04:09:50,815 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:09:50" (1/1) ... [2024-11-14 04:09:50,836 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:09:50" (1/1) ... [2024-11-14 04:09:50,844 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:09:50" (1/1) ... [2024-11-14 04:09:50,865 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 04:09:50,870 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 04:09:50,870 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 04:09:50,870 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 04:09:50,874 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:09:50" (1/1) ... [2024-11-14 04:09:50,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:09:50,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad7caa3-bda2-4e5d-91c6-9d04f9738f6b/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:09:50,910 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad7caa3-bda2-4e5d-91c6-9d04f9738f6b/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 04:09:50,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad7caa3-bda2-4e5d-91c6-9d04f9738f6b/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 04:09:50,964 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2024-11-14 04:09:50,965 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2024-11-14 04:09:50,965 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2024-11-14 04:09:50,965 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2024-11-14 04:09:50,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 04:09:50,965 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2024-11-14 04:09:50,965 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2024-11-14 04:09:50,965 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2024-11-14 04:09:50,965 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2024-11-14 04:09:50,965 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-14 04:09:50,966 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-14 04:09:50,966 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2024-11-14 04:09:50,966 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2024-11-14 04:09:50,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-14 04:09:50,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 04:09:50,967 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-11-14 04:09:50,967 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-11-14 04:09:50,967 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-14 04:09:50,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-14 04:09:50,967 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_node [2024-11-14 04:09:50,967 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_node [2024-11-14 04:09:50,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-14 04:09:50,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 04:09:50,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-14 04:09:50,968 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2024-11-14 04:09:50,968 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2024-11-14 04:09:50,969 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2024-11-14 04:09:50,969 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2024-11-14 04:09:50,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 04:09:50,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 04:09:50,969 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-14 04:09:50,969 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-14 04:09:50,969 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2024-11-14 04:09:50,969 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2024-11-14 04:09:50,969 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2024-11-14 04:09:50,969 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2024-11-14 04:09:50,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-14 04:09:50,969 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2024-11-14 04:09:50,969 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2024-11-14 04:09:50,969 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2024-11-14 04:09:50,969 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2024-11-14 04:09:50,969 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2024-11-14 04:09:50,969 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2024-11-14 04:09:50,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2024-11-14 04:09:50,969 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2024-11-14 04:09:50,970 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-14 04:09:50,970 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-14 04:09:50,970 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2024-11-14 04:09:50,970 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2024-11-14 04:09:50,970 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2024-11-14 04:09:50,970 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2024-11-14 04:09:50,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-14 04:09:50,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-14 04:09:50,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-14 04:09:50,970 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2024-11-14 04:09:50,970 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2024-11-14 04:09:50,970 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-14 04:09:50,970 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-14 04:09:50,970 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2024-11-14 04:09:50,970 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2024-11-14 04:09:50,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 04:09:50,970 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2024-11-14 04:09:50,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2024-11-14 04:09:50,970 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2024-11-14 04:09:50,970 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2024-11-14 04:09:50,971 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-14 04:09:50,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-14 04:09:50,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 04:09:50,971 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at [2024-11-14 04:09:50,971 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at [2024-11-14 04:09:51,395 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 04:09:51,401 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 04:09:56,561 INFO L? ?]: Removed 243 outVars from TransFormulas that were not future-live. [2024-11-14 04:09:56,562 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 04:09:57,395 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 04:09:57,396 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-14 04:09:57,396 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:09:57 BoogieIcfgContainer [2024-11-14 04:09:57,396 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 04:09:57,400 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 04:09:57,400 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 04:09:57,406 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 04:09:57,406 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:09:47" (1/3) ... [2024-11-14 04:09:57,407 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@562cbdac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:09:57, skipping insertion in model container [2024-11-14 04:09:57,407 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:09:50" (2/3) ... [2024-11-14 04:09:57,408 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@562cbdac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:09:57, skipping insertion in model container [2024-11-14 04:09:57,408 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:09:57" (3/3) ... [2024-11-14 04:09:57,409 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_pop_harness_negated.i [2024-11-14 04:09:57,434 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 04:09:57,436 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_priority_queue_pop_harness_negated.i that has 29 procedures, 392 locations, 1 initial locations, 6 loop locations, and 2 error locations. [2024-11-14 04:09:57,538 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 04:09:57,555 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;@1d828d74, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 04:09:57,556 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-14 04:09:57,564 INFO L276 IsEmpty]: Start isEmpty. Operand has 392 states, 200 states have (on average 1.2) internal successors, (240), 203 states have internal predecessors, (240), 162 states have call successors, (162), 28 states have call predecessors, (162), 28 states have return successors, (162), 162 states have call predecessors, (162), 162 states have call successors, (162) [2024-11-14 04:09:57,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-14 04:09:57,582 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:09:57,583 INFO L215 NwaCegarLoop]: trace histogram [9, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:09:57,583 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:09:57,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:09:57,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1743640087, now seen corresponding path program 1 times [2024-11-14 04:09:57,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:09:57,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516237925] [2024-11-14 04:09:57,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:09:57,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:10:06,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:10:08,309 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2024-11-14 04:10:08,311 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:10:08,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516237925] [2024-11-14 04:10:08,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516237925] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:10:08,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515069082] [2024-11-14 04:10:08,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:10:08,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:10:08,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad7caa3-bda2-4e5d-91c6-9d04f9738f6b/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:10:08,319 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad7caa3-bda2-4e5d-91c6-9d04f9738f6b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:10:08,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad7caa3-bda2-4e5d-91c6-9d04f9738f6b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 04:10:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:10:15,858 INFO L255 TraceCheckSpWp]: Trace formula consists of 4433 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 04:10:15,872 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:10:16,340 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-14 04:10:16,340 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:10:16,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515069082] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:10:16,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:10:16,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-14 04:10:16,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686673408] [2024-11-14 04:10:16,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:10:16,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:10:16,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:10:16,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:10:16,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-14 04:10:16,378 INFO L87 Difference]: Start difference. First operand has 392 states, 200 states have (on average 1.2) internal successors, (240), 203 states have internal predecessors, (240), 162 states have call successors, (162), 28 states have call predecessors, (162), 28 states have return successors, (162), 162 states have call predecessors, (162), 162 states have call successors, (162) Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2024-11-14 04:10:18,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:10:20,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:10:22,983 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 [] [2024-11-14 04:10:25,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:10:25,870 INFO L93 Difference]: Finished difference Result 741 states and 1136 transitions. [2024-11-14 04:10:25,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:10:25,873 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 125 [2024-11-14 04:10:25,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:10:25,888 INFO L225 Difference]: With dead ends: 741 [2024-11-14 04:10:25,888 INFO L226 Difference]: Without dead ends: 391 [2024-11-14 04:10:25,898 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-14 04:10:25,902 INFO L432 NwaCegarLoop]: 485 mSDtfsCounter, 29 mSDsluCounter, 1376 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 1861 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:10:25,902 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 1861 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 300 Invalid, 3 Unknown, 0 Unchecked, 9.3s Time] [2024-11-14 04:10:25,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2024-11-14 04:10:26,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2024-11-14 04:10:26,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 199 states have (on average 1.185929648241206) internal successors, (236), 203 states have internal predecessors, (236), 162 states have call successors, (162), 28 states have call predecessors, (162), 28 states have return successors, (173), 160 states have call predecessors, (173), 160 states have call successors, (173) [2024-11-14 04:10:26,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 571 transitions. [2024-11-14 04:10:26,059 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 571 transitions. Word has length 125 [2024-11-14 04:10:26,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:10:26,062 INFO L471 AbstractCegarLoop]: Abstraction has 391 states and 571 transitions. [2024-11-14 04:10:26,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2024-11-14 04:10:26,062 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 571 transitions. [2024-11-14 04:10:26,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-14 04:10:26,072 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:10:26,073 INFO L215 NwaCegarLoop]: trace histogram [9, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:10:26,104 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad7caa3-bda2-4e5d-91c6-9d04f9738f6b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 04:10:26,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad7caa3-bda2-4e5d-91c6-9d04f9738f6b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:10:26,274 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:10:26,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:10:26,275 INFO L85 PathProgramCache]: Analyzing trace with hash 376392169, now seen corresponding path program 1 times [2024-11-14 04:10:26,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:10:26,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754052081] [2024-11-14 04:10:26,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:10:26,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:10:32,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:10:34,074 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-14 04:10:34,075 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:10:34,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754052081] [2024-11-14 04:10:34,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754052081] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:10:34,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959323539] [2024-11-14 04:10:34,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:10:34,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:10:34,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad7caa3-bda2-4e5d-91c6-9d04f9738f6b/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:10:34,078 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad7caa3-bda2-4e5d-91c6-9d04f9738f6b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:10:34,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad7caa3-bda2-4e5d-91c6-9d04f9738f6b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 04:10:40,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:10:40,725 INFO L255 TraceCheckSpWp]: Trace formula consists of 4483 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 04:10:40,733 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:10:41,687 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-14 04:10:41,687 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:10:41,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959323539] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:10:41,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:10:41,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-14 04:10:41,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541718351] [2024-11-14 04:10:41,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:10:41,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 04:10:41,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:10:41,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 04:10:41,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-14 04:10:41,694 INFO L87 Difference]: Start difference. First operand 391 states and 571 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2024-11-14 04:10:43,761 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 [] [2024-11-14 04:10:46,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:10:48,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:10:50,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:10:52,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:10:58,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:10:58,677 INFO L93 Difference]: Finished difference Result 751 states and 1130 transitions. [2024-11-14 04:10:58,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 04:10:58,678 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 133 [2024-11-14 04:10:58,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:10:58,686 INFO L225 Difference]: With dead ends: 751 [2024-11-14 04:10:58,687 INFO L226 Difference]: Without dead ends: 404 [2024-11-14 04:10:58,689 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-14 04:10:58,690 INFO L432 NwaCegarLoop]: 466 mSDtfsCounter, 35 mSDsluCounter, 2217 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 2683 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2024-11-14 04:10:58,690 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 2683 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 579 Invalid, 5 Unknown, 0 Unchecked, 16.8s Time] [2024-11-14 04:10:58,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2024-11-14 04:10:58,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 402. [2024-11-14 04:10:58,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 207 states have (on average 1.1884057971014492) internal successors, (246), 211 states have internal predecessors, (246), 164 states have call successors, (164), 28 states have call predecessors, (164), 29 states have return successors, (192), 163 states have call predecessors, (192), 162 states have call successors, (192) [2024-11-14 04:10:58,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 602 transitions. [2024-11-14 04:10:58,745 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 602 transitions. Word has length 133 [2024-11-14 04:10:58,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:10:58,745 INFO L471 AbstractCegarLoop]: Abstraction has 402 states and 602 transitions. [2024-11-14 04:10:58,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2024-11-14 04:10:58,746 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 602 transitions. [2024-11-14 04:10:58,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-14 04:10:58,750 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:10:58,751 INFO L215 NwaCegarLoop]: trace histogram [9, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:10:58,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad7caa3-bda2-4e5d-91c6-9d04f9738f6b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-14 04:10:58,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad7caa3-bda2-4e5d-91c6-9d04f9738f6b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:10:58,952 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:10:58,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:10:58,952 INFO L85 PathProgramCache]: Analyzing trace with hash -2102821717, now seen corresponding path program 1 times [2024-11-14 04:10:58,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:10:58,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669422629] [2024-11-14 04:10:58,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:10:58,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:11:05,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:11:06,755 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2024-11-14 04:11:06,755 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:11:06,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669422629] [2024-11-14 04:11:06,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669422629] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:11:06,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309199899] [2024-11-14 04:11:06,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:11:06,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:11:06,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad7caa3-bda2-4e5d-91c6-9d04f9738f6b/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:11:06,758 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad7caa3-bda2-4e5d-91c6-9d04f9738f6b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:11:06,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad7caa3-bda2-4e5d-91c6-9d04f9738f6b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 04:11:13,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:11:13,871 INFO L255 TraceCheckSpWp]: Trace formula consists of 4587 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 04:11:13,877 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:11:14,769 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-14 04:11:14,769 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:11:14,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309199899] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:11:14,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:11:14,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-11-14 04:11:14,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332364630] [2024-11-14 04:11:14,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:11:14,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 04:11:14,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:11:14,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 04:11:14,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-14 04:11:14,772 INFO L87 Difference]: Start difference. First operand 402 states and 602 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2024-11-14 04:11:16,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:11:19,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:11:21,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:11:23,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:11:27,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:11:27,640 INFO L93 Difference]: Finished difference Result 766 states and 1177 transitions. [2024-11-14 04:11:27,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 04:11:27,641 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) Word has length 142 [2024-11-14 04:11:27,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:11:27,650 INFO L225 Difference]: With dead ends: 766 [2024-11-14 04:11:27,650 INFO L226 Difference]: Without dead ends: 408 [2024-11-14 04:11:27,654 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-14 04:11:27,654 INFO L432 NwaCegarLoop]: 483 mSDtfsCounter, 34 mSDsluCounter, 1824 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 2307 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2024-11-14 04:11:27,655 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 2307 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 397 Invalid, 4 Unknown, 0 Unchecked, 12.8s Time] [2024-11-14 04:11:27,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2024-11-14 04:11:27,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 402. [2024-11-14 04:11:27,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 207 states have (on average 1.1884057971014492) internal successors, (246), 211 states have internal predecessors, (246), 164 states have call successors, (164), 28 states have call predecessors, (164), 29 states have return successors, (192), 163 states have call predecessors, (192), 162 states have call successors, (192) [2024-11-14 04:11:27,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 602 transitions. [2024-11-14 04:11:27,700 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 602 transitions. Word has length 142 [2024-11-14 04:11:27,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:11:27,701 INFO L471 AbstractCegarLoop]: Abstraction has 402 states and 602 transitions. [2024-11-14 04:11:27,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2024-11-14 04:11:27,701 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 602 transitions. [2024-11-14 04:11:27,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-14 04:11:27,703 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:11:27,704 INFO L215 NwaCegarLoop]: trace histogram [9, 6, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:11:27,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad7caa3-bda2-4e5d-91c6-9d04f9738f6b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-14 04:11:27,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad7caa3-bda2-4e5d-91c6-9d04f9738f6b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:11:27,904 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:11:27,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:11:27,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1406977233, now seen corresponding path program 1 times [2024-11-14 04:11:27,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:11:27,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676658628] [2024-11-14 04:11:27,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:11:27,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:11:33,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:11:35,500 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2024-11-14 04:11:35,501 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:11:35,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676658628] [2024-11-14 04:11:35,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676658628] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:11:35,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460550497] [2024-11-14 04:11:35,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:11:35,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:11:35,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad7caa3-bda2-4e5d-91c6-9d04f9738f6b/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:11:35,504 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad7caa3-bda2-4e5d-91c6-9d04f9738f6b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:11:35,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad7caa3-bda2-4e5d-91c6-9d04f9738f6b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 04:11:42,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:11:42,861 INFO L255 TraceCheckSpWp]: Trace formula consists of 4627 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 04:11:42,867 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:11:44,391 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-14 04:11:44,391 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:11:44,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460550497] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:11:44,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:11:44,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2024-11-14 04:11:44,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850543537] [2024-11-14 04:11:44,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:11:44,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 04:11:44,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:11:44,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 04:11:44,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-14 04:11:44,394 INFO L87 Difference]: Start difference. First operand 402 states and 602 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 5 states have call predecessors, (29), 5 states have call successors, (29) [2024-11-14 04:11:46,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:11:48,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:11:51,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:11:53,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:11:55,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:11:57,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:12:04,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:12:04,572 INFO L93 Difference]: Finished difference Result 769 states and 1170 transitions. [2024-11-14 04:12:04,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 04:12:04,573 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 5 states have call predecessors, (29), 5 states have call successors, (29) Word has length 150 [2024-11-14 04:12:04,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:12:04,578 INFO L225 Difference]: With dead ends: 769 [2024-11-14 04:12:04,579 INFO L226 Difference]: Without dead ends: 411 [2024-11-14 04:12:04,582 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-11-14 04:12:04,584 INFO L432 NwaCegarLoop]: 465 mSDtfsCounter, 44 mSDsluCounter, 2652 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 7 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 3117 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.8s IncrementalHoareTripleChecker+Time [2024-11-14 04:12:04,584 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 3117 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 702 Invalid, 6 Unknown, 0 Unchecked, 19.8s Time] [2024-11-14 04:12:04,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2024-11-14 04:12:04,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 402. [2024-11-14 04:12:04,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 207 states have (on average 1.1884057971014492) internal successors, (246), 211 states have internal predecessors, (246), 164 states have call successors, (164), 28 states have call predecessors, (164), 29 states have return successors, (192), 163 states have call predecessors, (192), 162 states have call successors, (192) [2024-11-14 04:12:04,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 602 transitions. [2024-11-14 04:12:04,637 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 602 transitions. Word has length 150 [2024-11-14 04:12:04,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:12:04,637 INFO L471 AbstractCegarLoop]: Abstraction has 402 states and 602 transitions. [2024-11-14 04:12:04,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 5 states have call predecessors, (29), 5 states have call successors, (29) [2024-11-14 04:12:04,638 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 602 transitions. [2024-11-14 04:12:04,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-14 04:12:04,644 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:12:04,644 INFO L215 NwaCegarLoop]: trace histogram [9, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:12:04,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad7caa3-bda2-4e5d-91c6-9d04f9738f6b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-14 04:12:04,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad7caa3-bda2-4e5d-91c6-9d04f9738f6b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:12:04,845 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:12:04,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:12:04,845 INFO L85 PathProgramCache]: Analyzing trace with hash -473607967, now seen corresponding path program 2 times [2024-11-14 04:12:04,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:12:04,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819937533] [2024-11-14 04:12:04,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:12:04,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:12:09,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:12:11,439 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-14 04:12:11,439 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:12:11,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819937533] [2024-11-14 04:12:11,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819937533] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:12:11,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:12:11,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 04:12:11,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612240216] [2024-11-14 04:12:11,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:12:11,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 04:12:11,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:12:11,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 04:12:11,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:12:11,442 INFO L87 Difference]: Start difference. First operand 402 states and 602 transitions. Second operand has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 4 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 3 states have call predecessors, (29), 4 states have call successors, (29) [2024-11-14 04:12:13,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:12:15,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:12:18,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:12:20,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:12:24,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:12:24,410 INFO L93 Difference]: Finished difference Result 733 states and 1119 transitions. [2024-11-14 04:12:24,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 04:12:24,410 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 4 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 3 states have call predecessors, (29), 4 states have call successors, (29) Word has length 159 [2024-11-14 04:12:24,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:12:24,416 INFO L225 Difference]: With dead ends: 733 [2024-11-14 04:12:24,416 INFO L226 Difference]: Without dead ends: 404 [2024-11-14 04:12:24,419 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:12:24,420 INFO L432 NwaCegarLoop]: 486 mSDtfsCounter, 33 mSDsluCounter, 1848 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 17 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 2334 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2024-11-14 04:12:24,421 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 2334 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 359 Invalid, 4 Unknown, 0 Unchecked, 12.8s Time] [2024-11-14 04:12:24,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2024-11-14 04:12:24,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 404. [2024-11-14 04:12:24,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 208 states have (on average 1.1875) internal successors, (247), 213 states have internal predecessors, (247), 164 states have call successors, (164), 28 states have call predecessors, (164), 30 states have return successors, (203), 163 states have call predecessors, (203), 162 states have call successors, (203) [2024-11-14 04:12:24,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 614 transitions. [2024-11-14 04:12:24,454 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 614 transitions. Word has length 159 [2024-11-14 04:12:24,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:12:24,454 INFO L471 AbstractCegarLoop]: Abstraction has 404 states and 614 transitions. [2024-11-14 04:12:24,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 4 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 3 states have call predecessors, (29), 4 states have call successors, (29) [2024-11-14 04:12:24,455 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 614 transitions. [2024-11-14 04:12:24,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-14 04:12:24,458 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:12:24,458 INFO L215 NwaCegarLoop]: trace histogram [9, 6, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:12:24,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-14 04:12:24,458 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:12:24,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:12:24,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1258522623, now seen corresponding path program 1 times [2024-11-14 04:12:24,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:12:24,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162853862] [2024-11-14 04:12:24,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:12:24,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:12:29,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:12:31,610 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2024-11-14 04:12:31,610 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:12:31,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162853862] [2024-11-14 04:12:31,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162853862] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:12:31,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:12:31,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 04:12:31,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113151741] [2024-11-14 04:12:31,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:12:31,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 04:12:31,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:12:31,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 04:12:31,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:12:31,613 INFO L87 Difference]: Start difference. First operand 404 states and 614 transitions. Second operand has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 7 states have internal predecessors, (61), 5 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) [2024-11-14 04:12:33,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:12:35,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:12:38,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:12:40,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:12:42,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:12:47,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:12:47,615 INFO L93 Difference]: Finished difference Result 738 states and 1144 transitions. [2024-11-14 04:12:47,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 04:12:47,616 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 7 states have internal predecessors, (61), 5 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) Word has length 176 [2024-11-14 04:12:47,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:12:47,621 INFO L225 Difference]: With dead ends: 738 [2024-11-14 04:12:47,621 INFO L226 Difference]: Without dead ends: 407 [2024-11-14 04:12:47,624 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-14 04:12:47,625 INFO L432 NwaCegarLoop]: 485 mSDtfsCounter, 38 mSDsluCounter, 2299 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 18 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 2784 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2024-11-14 04:12:47,626 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 2784 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 460 Invalid, 5 Unknown, 0 Unchecked, 15.8s Time] [2024-11-14 04:12:47,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2024-11-14 04:12:47,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 405. [2024-11-14 04:12:47,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 209 states have (on average 1.186602870813397) internal successors, (248), 214 states have internal predecessors, (248), 164 states have call successors, (164), 28 states have call predecessors, (164), 30 states have return successors, (203), 163 states have call predecessors, (203), 162 states have call successors, (203) [2024-11-14 04:12:47,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 615 transitions. [2024-11-14 04:12:47,654 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 615 transitions. Word has length 176 [2024-11-14 04:12:47,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:12:47,656 INFO L471 AbstractCegarLoop]: Abstraction has 405 states and 615 transitions. [2024-11-14 04:12:47,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 7 states have internal predecessors, (61), 5 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) [2024-11-14 04:12:47,657 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 615 transitions. [2024-11-14 04:12:47,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-14 04:12:47,661 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:12:47,661 INFO L215 NwaCegarLoop]: trace histogram [9, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:12:47,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-14 04:12:47,662 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:12:47,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:12:47,662 INFO L85 PathProgramCache]: Analyzing trace with hash -766975143, now seen corresponding path program 1 times [2024-11-14 04:12:47,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:12:47,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981662011] [2024-11-14 04:12:47,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:12:47,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:12:52,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:12:54,124 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-14 04:12:54,124 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:12:54,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981662011] [2024-11-14 04:12:54,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981662011] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:12:54,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719236215] [2024-11-14 04:12:54,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:12:54,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:12:54,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad7caa3-bda2-4e5d-91c6-9d04f9738f6b/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:12:54,127 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad7caa3-bda2-4e5d-91c6-9d04f9738f6b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:12:54,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad7caa3-bda2-4e5d-91c6-9d04f9738f6b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 04:13:00,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:13:00,898 INFO L255 TraceCheckSpWp]: Trace formula consists of 5029 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 04:13:00,906 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:13:02,523 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-14 04:13:02,523 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:13:02,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719236215] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:13:02,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:13:02,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2024-11-14 04:13:02,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436701698] [2024-11-14 04:13:02,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:13:02,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 04:13:02,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:13:02,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 04:13:02,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-14 04:13:02,525 INFO L87 Difference]: Start difference. First operand 405 states and 615 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 5 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (29), 5 states have call predecessors, (29), 5 states have call successors, (29) [2024-11-14 04:13:04,593 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 [] [2024-11-14 04:13:06,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:13:09,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:13:11,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:13:13,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:13:15,937 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 [] [2024-11-14 04:13:21,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:13:21,790 INFO L93 Difference]: Finished difference Result 742 states and 1140 transitions. [2024-11-14 04:13:21,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 04:13:21,791 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 5 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (29), 5 states have call predecessors, (29), 5 states have call successors, (29) Word has length 193 [2024-11-14 04:13:21,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:13:21,796 INFO L225 Difference]: With dead ends: 742 [2024-11-14 04:13:21,796 INFO L226 Difference]: Without dead ends: 415 [2024-11-14 04:13:21,799 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2024-11-14 04:13:21,799 INFO L432 NwaCegarLoop]: 482 mSDtfsCounter, 37 mSDsluCounter, 2786 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 23 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 3268 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:13:21,800 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 3268 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 546 Invalid, 6 Unknown, 0 Unchecked, 19.0s Time] [2024-11-14 04:13:21,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2024-11-14 04:13:21,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2024-11-14 04:13:21,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 213 states have (on average 1.1830985915492958) internal successors, (252), 218 states have internal predecessors, (252), 169 states have call successors, (169), 29 states have call predecessors, (169), 31 states have return successors, (208), 168 states have call predecessors, (208), 167 states have call successors, (208) [2024-11-14 04:13:21,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 629 transitions. [2024-11-14 04:13:21,829 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 629 transitions. Word has length 193 [2024-11-14 04:13:21,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:13:21,833 INFO L471 AbstractCegarLoop]: Abstraction has 415 states and 629 transitions. [2024-11-14 04:13:21,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 5 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (29), 5 states have call predecessors, (29), 5 states have call successors, (29) [2024-11-14 04:13:21,833 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 629 transitions. [2024-11-14 04:13:21,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-14 04:13:21,838 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:13:21,838 INFO L215 NwaCegarLoop]: trace histogram [9, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:13:21,874 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad7caa3-bda2-4e5d-91c6-9d04f9738f6b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-14 04:13:22,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad7caa3-bda2-4e5d-91c6-9d04f9738f6b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:13:22,039 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:13:22,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:13:22,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1325028795, now seen corresponding path program 2 times [2024-11-14 04:13:22,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:13:22,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781133129] [2024-11-14 04:13:22,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:13:22,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:13:26,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:13:29,204 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2024-11-14 04:13:29,204 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:13:29,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781133129] [2024-11-14 04:13:29,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781133129] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:13:29,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767151981] [2024-11-14 04:13:29,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 04:13:29,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:13:29,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad7caa3-bda2-4e5d-91c6-9d04f9738f6b/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:13:29,207 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad7caa3-bda2-4e5d-91c6-9d04f9738f6b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:13:29,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad7caa3-bda2-4e5d-91c6-9d04f9738f6b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process