./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2e69d0ba5182ea14058c8293e8c1aea9ca71843fb723868a6419c81ddb81574e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:15:11,259 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:15:11,342 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-09 05:15:11,348 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:15:11,349 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:15:11,389 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:15:11,389 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:15:11,390 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:15:11,391 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:15:11,391 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:15:11,392 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:15:11,392 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:15:11,393 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:15:11,393 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:15:11,394 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:15:11,394 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:15:11,395 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:15:11,395 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:15:11,396 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:15:11,397 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:15:11,397 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:15:11,402 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:15:11,403 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:15:11,403 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:15:11,403 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:15:11,404 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:15:11,404 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:15:11,404 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:15:11,405 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:15:11,405 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:15:11,405 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:15:11,410 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:15:11,410 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:15:11,411 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:15:11,411 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:15:11,411 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:15:11,411 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:15:11,412 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:15:11,412 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:15:11,412 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:15:11,412 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:15:11,413 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:15:11,413 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:15:11,413 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:15:11,414 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e69d0ba5182ea14058c8293e8c1aea9ca71843fb723868a6419c81ddb81574e [2024-11-09 05:15:11,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:15:11,800 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:15:11,804 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:15:11,806 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:15:11,807 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:15:11,808 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness_negated.i Unable to find full path for "g++" [2024-11-09 05:15:14,194 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:15:14,935 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:15:14,936 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness_negated.i [2024-11-09 05:15:14,981 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/data/82fb01dd5/f5f1fe8acae647b4b306349cf2a6e28b/FLAGf505f9285 [2024-11-09 05:15:15,001 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/data/82fb01dd5/f5f1fe8acae647b4b306349cf2a6e28b [2024-11-09 05:15:15,004 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:15:15,006 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:15:15,008 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:15:15,008 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:15:15,020 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:15:15,023 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:15:15" (1/1) ... [2024-11-09 05:15:15,025 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f5f537d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:15:15, skipping insertion in model container [2024-11-09 05:15:15,026 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:15:15" (1/1) ... [2024-11-09 05:15:15,213 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:15:15,604 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_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness_negated.i[4496,4509] [2024-11-09 05:15:15,615 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_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness_negated.i[4556,4569] [2024-11-09 05:15:17,132 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:17,133 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:17,134 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:17,135 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:17,136 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:17,156 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:17,157 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:17,160 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:17,161 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:17,164 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:17,165 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:17,166 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:17,166 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:18,678 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:18,679 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:18,734 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:18,738 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:18,750 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:18,754 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:18,787 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:18,791 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:18,792 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:18,792 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:18,792 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:18,793 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:18,794 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:18,855 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_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness_negated.i[227893,227906] [2024-11-09 05:15:18,857 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:15:18,917 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:15:18,942 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_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness_negated.i[4496,4509] [2024-11-09 05:15:18,943 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_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness_negated.i[4556,4569] [2024-11-09 05:15:19,078 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:19,078 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:19,079 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:19,079 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:19,080 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:19,088 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:19,089 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:19,090 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:19,091 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:19,092 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:19,093 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:19,094 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:19,094 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:19,213 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7526-7537] [2024-11-09 05:15:19,344 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:19,345 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:19,357 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:19,358 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:19,362 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:19,362 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:19,380 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:19,381 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:19,382 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:19,382 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:19,383 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:19,384 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:19,385 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 05:15:19,420 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_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness_negated.i[227893,227906] [2024-11-09 05:15:19,421 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:15:19,741 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:15:19,742 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:15:19 WrapperNode [2024-11-09 05:15:19,742 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:15:19,743 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:15:19,744 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:15:19,744 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:15:19,754 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:15:19" (1/1) ... [2024-11-09 05:15:19,925 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:15:19" (1/1) ... [2024-11-09 05:15:20,064 INFO L138 Inliner]: procedures = 764, calls = 2430, calls flagged for inlining = 70, calls inlined = 18, statements flattened = 969 [2024-11-09 05:15:20,065 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:15:20,067 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:15:20,067 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:15:20,067 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:15:20,080 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:15:19" (1/1) ... [2024-11-09 05:15:20,081 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:15:19" (1/1) ... [2024-11-09 05:15:20,097 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:15:19" (1/1) ... [2024-11-09 05:15:20,098 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:15:19" (1/1) ... [2024-11-09 05:15:20,162 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:15:19" (1/1) ... [2024-11-09 05:15:20,170 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:15:19" (1/1) ... [2024-11-09 05:15:20,181 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:15:19" (1/1) ... [2024-11-09 05:15:20,187 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:15:19" (1/1) ... [2024-11-09 05:15:20,203 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:15:20,204 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:15:20,204 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:15:20,204 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:15:20,205 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:15:19" (1/1) ... [2024-11-09 05:15:20,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:15:20,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:15:20,268 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:15:20,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:15:20,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2024-11-09 05:15:20,316 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2024-11-09 05:15:20,317 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2024-11-09 05:15:20,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 05:15:20,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-09 05:15:20,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 05:15:20,319 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-11-09 05:15:20,319 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-11-09 05:15:20,319 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 05:15:20,319 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 05:15:20,319 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2024-11-09 05:15:20,319 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2024-11-09 05:15:20,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 05:15:20,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:15:20,320 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2024-11-09 05:15:20,320 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2024-11-09 05:15:20,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-09 05:15:20,321 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2024-11-09 05:15:20,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2024-11-09 05:15:20,321 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2024-11-09 05:15:20,321 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2024-11-09 05:15:20,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:15:20,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:15:20,324 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-09 05:15:20,324 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-09 05:15:20,324 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2024-11-09 05:15:20,324 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2024-11-09 05:15:20,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-09 05:15:20,324 INFO L130 BoogieDeclarations]: Found specification of procedure s_get_next_element [2024-11-09 05:15:20,325 INFO L138 BoogieDeclarations]: Found implementation of procedure s_get_next_element [2024-11-09 05:15:20,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2024-11-09 05:15:20,325 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2024-11-09 05:15:20,325 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-09 05:15:20,325 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-09 05:15:20,325 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_int [2024-11-09 05:15:20,325 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_int [2024-11-09 05:15:20,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 05:15:20,326 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_is_valid [2024-11-09 05:15:20,326 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_is_valid [2024-11-09 05:15:20,326 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2024-11-09 05:15:20,326 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2024-11-09 05:15:20,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 05:15:20,326 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2024-11-09 05:15:20,326 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2024-11-09 05:15:20,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-09 05:15:20,327 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2024-11-09 05:15:20,327 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2024-11-09 05:15:20,327 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2024-11-09 05:15:20,327 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2024-11-09 05:15:20,327 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-09 05:15:20,327 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-09 05:15:20,327 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_entry [2024-11-09 05:15:20,327 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_entry [2024-11-09 05:15:20,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 05:15:20,328 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-09 05:15:20,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-09 05:15:20,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:15:20,328 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2024-11-09 05:15:20,328 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2024-11-09 05:15:20,887 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:15:20,890 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:15:21,241 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !true; [2024-11-09 05:15:21,242 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume !true; [2024-11-09 05:15:25,995 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !true; [2024-11-09 05:15:26,189 INFO L? ?]: Removed 272 outVars from TransFormulas that were not future-live. [2024-11-09 05:15:26,189 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:15:26,818 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:15:26,819 INFO L316 CfgBuilder]: Removed 12 assume(true) statements. [2024-11-09 05:15:26,819 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:15:26 BoogieIcfgContainer [2024-11-09 05:15:26,819 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:15:26,826 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:15:26,826 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:15:26,832 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:15:26,832 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:15:15" (1/3) ... [2024-11-09 05:15:26,834 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@458af9fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:15:26, skipping insertion in model container [2024-11-09 05:15:26,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:15:19" (2/3) ... [2024-11-09 05:15:26,835 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@458af9fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:15:26, skipping insertion in model container [2024-11-09 05:15:26,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:15:26" (3/3) ... [2024-11-09 05:15:26,838 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_table_foreach_harness_negated.i [2024-11-09 05:15:26,862 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:15:26,862 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 05:15:26,984 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:15:26,996 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;@1b49894, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:15:26,998 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 05:15:27,004 INFO L276 IsEmpty]: Start isEmpty. Operand has 231 states, 130 states have (on average 1.2307692307692308) internal successors, (160), 127 states have internal predecessors, (160), 81 states have call successors, (81), 22 states have call predecessors, (81), 22 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-09 05:15:27,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-09 05:15:27,024 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:15:27,026 INFO L215 NwaCegarLoop]: trace histogram [8, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:15:27,026 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:15:27,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:15:27,035 INFO L85 PathProgramCache]: Analyzing trace with hash -383179933, now seen corresponding path program 1 times [2024-11-09 05:15:27,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:15:27,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775145078] [2024-11-09 05:15:27,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:15:27,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:15:35,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:15:37,961 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-09 05:15:37,967 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:15:37,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775145078] [2024-11-09 05:15:37,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775145078] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:15:37,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:15:37,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:15:37,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828316677] [2024-11-09 05:15:37,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:15:37,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:15:37,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:15:38,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:15:38,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:15:38,052 INFO L87 Difference]: Start difference. First operand has 231 states, 130 states have (on average 1.2307692307692308) internal successors, (160), 127 states have internal predecessors, (160), 81 states have call successors, (81), 22 states have call predecessors, (81), 22 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) Second operand has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-09 05:15:40,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:15:42,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:15:44,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:15:47,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:15:49,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:15:49,016 INFO L93 Difference]: Finished difference Result 430 states and 626 transitions. [2024-11-09 05:15:49,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:15:49,020 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 88 [2024-11-09 05:15:49,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:15:49,042 INFO L225 Difference]: With dead ends: 430 [2024-11-09 05:15:49,043 INFO L226 Difference]: Without dead ends: 233 [2024-11-09 05:15:49,050 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:15:49,059 INFO L432 NwaCegarLoop]: 271 mSDtfsCounter, 0 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2024-11-09 05:15:49,064 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1080 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 163 Invalid, 4 Unknown, 0 Unchecked, 10.8s Time] [2024-11-09 05:15:49,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2024-11-09 05:15:49,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2024-11-09 05:15:49,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 128 states have (on average 1.1875) internal successors, (152), 129 states have internal predecessors, (152), 81 states have call successors, (81), 22 states have call predecessors, (81), 23 states have return successors, (81), 81 states have call predecessors, (81), 80 states have call successors, (81) [2024-11-09 05:15:49,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 314 transitions. [2024-11-09 05:15:49,174 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 314 transitions. Word has length 88 [2024-11-09 05:15:49,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:15:49,176 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 314 transitions. [2024-11-09 05:15:49,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-09 05:15:49,177 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 314 transitions. [2024-11-09 05:15:49,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-09 05:15:49,182 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:15:49,182 INFO L215 NwaCegarLoop]: trace histogram [8, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:15:49,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:15:49,183 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:15:49,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:15:49,184 INFO L85 PathProgramCache]: Analyzing trace with hash -33843438, now seen corresponding path program 1 times [2024-11-09 05:15:49,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:15:49,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922385056] [2024-11-09 05:15:49,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:15:49,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:15:56,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:16:02,871 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-09 05:16:02,871 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:16:02,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922385056] [2024-11-09 05:16:02,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922385056] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:16:02,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205117139] [2024-11-09 05:16:02,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:16:02,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:16:02,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:16:02,876 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:16:02,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 05:16:11,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:16:11,463 INFO L255 TraceCheckSpWp]: Trace formula consists of 4308 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 05:16:11,477 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:16:14,186 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 05:16:14,186 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:16:17,158 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-09 05:16:17,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205117139] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 05:16:17,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 05:16:17,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 19 [2024-11-09 05:16:17,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92337731] [2024-11-09 05:16:17,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:16:17,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 05:16:17,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:16:17,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 05:16:17,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2024-11-09 05:16:17,167 INFO L87 Difference]: Start difference. First operand 233 states and 314 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) [2024-11-09 05:16:19,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:16:21,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:16:23,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:16:26,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:16:28,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:16:30,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:16:35,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:16:35,662 INFO L93 Difference]: Finished difference Result 425 states and 596 transitions. [2024-11-09 05:16:35,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 05:16:35,663 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) Word has length 97 [2024-11-09 05:16:35,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:16:35,669 INFO L225 Difference]: With dead ends: 425 [2024-11-09 05:16:35,669 INFO L226 Difference]: Without dead ends: 254 [2024-11-09 05:16:35,671 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 182 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2024-11-09 05:16:35,673 INFO L432 NwaCegarLoop]: 243 mSDtfsCounter, 328 mSDsluCounter, 1201 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 26 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 1444 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2024-11-09 05:16:35,678 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 1444 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 411 Invalid, 6 Unknown, 0 Unchecked, 17.6s Time] [2024-11-09 05:16:35,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-11-09 05:16:35,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 250. [2024-11-09 05:16:35,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 138 states have (on average 1.1956521739130435) internal successors, (165), 140 states have internal predecessors, (165), 86 states have call successors, (86), 23 states have call predecessors, (86), 25 states have return successors, (93), 86 states have call predecessors, (93), 85 states have call successors, (93) [2024-11-09 05:16:35,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 344 transitions. [2024-11-09 05:16:35,747 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 344 transitions. Word has length 97 [2024-11-09 05:16:35,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:16:35,748 INFO L471 AbstractCegarLoop]: Abstraction has 250 states and 344 transitions. [2024-11-09 05:16:35,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) [2024-11-09 05:16:35,749 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 344 transitions. [2024-11-09 05:16:35,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-09 05:16:35,753 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:16:35,753 INFO L215 NwaCegarLoop]: trace histogram [8, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:16:35,783 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 05:16:35,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:16:35,954 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:16:35,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:16:35,955 INFO L85 PathProgramCache]: Analyzing trace with hash 300973335, now seen corresponding path program 1 times [2024-11-09 05:16:35,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:16:35,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697711026] [2024-11-09 05:16:35,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:16:35,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:16:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:16:47,751 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-09 05:16:47,751 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:16:47,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697711026] [2024-11-09 05:16:47,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697711026] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:16:47,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237084057] [2024-11-09 05:16:47,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:16:47,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:16:47,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:16:47,755 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:16:47,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 05:16:55,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:16:55,428 INFO L255 TraceCheckSpWp]: Trace formula consists of 4313 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-09 05:16:55,438 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:16:56,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2024-11-09 05:16:58,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 18 [2024-11-09 05:17:00,745 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 05:17:00,746 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:17:00,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237084057] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:17:00,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:17:00,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [8] total 20 [2024-11-09 05:17:00,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838557034] [2024-11-09 05:17:00,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:17:00,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 05:17:00,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:17:00,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 05:17:00,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2024-11-09 05:17:00,752 INFO L87 Difference]: Start difference. First operand 250 states and 344 transitions. Second operand has 14 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 8 states have call successors, (22), 5 states have call predecessors, (22), 3 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) [2024-11-09 05:17:02,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:17:05,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:17:07,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:17:09,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:17:11,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:17:14,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:17:16,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:17:18,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:17:21,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:17:23,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:17:25,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:17:27,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:17:30,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-09 05:17:32,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:17:34,674 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:17:36,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:17:38,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:17:41,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:17:43,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:17:45,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:18:03,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:18:05,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:18:11,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:18:14,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:18:16,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:18:18,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:18:21,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:18:23,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:18:25,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:18:28,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:18:30,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:18:32,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:18:32,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:18:32,581 INFO L93 Difference]: Finished difference Result 688 states and 964 transitions. [2024-11-09 05:18:32,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 05:18:32,585 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 8 states have call successors, (22), 5 states have call predecessors, (22), 3 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) Word has length 98 [2024-11-09 05:18:32,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:18:32,600 INFO L225 Difference]: With dead ends: 688 [2024-11-09 05:18:32,601 INFO L226 Difference]: Without dead ends: 511 [2024-11-09 05:18:32,606 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 82 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=113, Invalid=757, Unknown=0, NotChecked=0, Total=870 [2024-11-09 05:18:32,607 INFO L432 NwaCegarLoop]: 354 mSDtfsCounter, 395 mSDsluCounter, 1567 mSDsCounter, 0 mSdLazyCounter, 2312 mSolverCounterSat, 92 mSolverCounterUnsat, 32 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 86.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 1921 SdHoareTripleChecker+Invalid, 2436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 2312 IncrementalHoareTripleChecker+Invalid, 32 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 89.8s IncrementalHoareTripleChecker+Time [2024-11-09 05:18:32,615 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 1921 Invalid, 2436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 2312 Invalid, 32 Unknown, 0 Unchecked, 89.8s Time] [2024-11-09 05:18:32,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2024-11-09 05:18:32,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 491. [2024-11-09 05:18:32,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 265 states have (on average 1.2075471698113207) internal successors, (320), 274 states have internal predecessors, (320), 176 states have call successors, (176), 49 states have call predecessors, (176), 49 states have return successors, (183), 167 states have call predecessors, (183), 173 states have call successors, (183) [2024-11-09 05:18:32,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 679 transitions. [2024-11-09 05:18:32,767 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 679 transitions. Word has length 98 [2024-11-09 05:18:32,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:18:32,768 INFO L471 AbstractCegarLoop]: Abstraction has 491 states and 679 transitions. [2024-11-09 05:18:32,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 8 states have call successors, (22), 5 states have call predecessors, (22), 3 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) [2024-11-09 05:18:32,770 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 679 transitions. [2024-11-09 05:18:32,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-09 05:18:32,777 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:18:32,777 INFO L215 NwaCegarLoop]: trace histogram [8, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:18:32,817 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 05:18:32,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-09 05:18:32,978 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:18:32,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:18:32,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1131380026, now seen corresponding path program 1 times [2024-11-09 05:18:32,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:18:32,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171675251] [2024-11-09 05:18:32,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:18:32,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:18:39,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:18:44,197 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-09 05:18:44,197 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:18:44,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171675251] [2024-11-09 05:18:44,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171675251] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:18:44,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253072303] [2024-11-09 05:18:44,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:18:44,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:18:44,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:18:44,200 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:18:44,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 05:18:52,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:18:52,481 INFO L255 TraceCheckSpWp]: Trace formula consists of 4325 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 05:18:52,489 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:18:55,792 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-09 05:18:55,792 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:18:56,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 26 [2024-11-09 05:18:58,835 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-09 05:18:58,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253072303] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 05:18:58,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 05:18:58,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 11] total 21 [2024-11-09 05:18:58,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487120922] [2024-11-09 05:18:58,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:18:58,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 05:18:58,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:18:58,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 05:18:58,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2024-11-09 05:18:58,838 INFO L87 Difference]: Start difference. First operand 491 states and 679 transitions. Second operand has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-09 05:19:00,916 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:19:03,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:19:05,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:19:07,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:19:09,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:19:12,221 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 [] [2024-11-09 05:19:15,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:19:15,533 INFO L93 Difference]: Finished difference Result 504 states and 702 transitions. [2024-11-09 05:19:15,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 05:19:15,534 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 102 [2024-11-09 05:19:15,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:19:15,544 INFO L225 Difference]: With dead ends: 504 [2024-11-09 05:19:15,544 INFO L226 Difference]: Without dead ends: 502 [2024-11-09 05:19:15,545 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2024-11-09 05:19:15,546 INFO L432 NwaCegarLoop]: 272 mSDtfsCounter, 3 mSDsluCounter, 1337 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1609 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:19:15,548 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1609 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 261 Invalid, 6 Unknown, 0 Unchecked, 16.3s Time] [2024-11-09 05:19:15,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2024-11-09 05:19:15,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 499. [2024-11-09 05:19:15,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 270 states have (on average 1.2037037037037037) internal successors, (325), 280 states have internal predecessors, (325), 177 states have call successors, (177), 50 states have call predecessors, (177), 51 states have return successors, (189), 168 states have call predecessors, (189), 174 states have call successors, (189) [2024-11-09 05:19:15,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 691 transitions. [2024-11-09 05:19:15,628 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 691 transitions. Word has length 102 [2024-11-09 05:19:15,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:19:15,629 INFO L471 AbstractCegarLoop]: Abstraction has 499 states and 691 transitions. [2024-11-09 05:19:15,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-09 05:19:15,630 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 691 transitions. [2024-11-09 05:19:15,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-09 05:19:15,632 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:19:15,633 INFO L215 NwaCegarLoop]: trace histogram [8, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:19:15,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 05:19:15,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:19:15,834 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:19:15,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:19:15,838 INFO L85 PathProgramCache]: Analyzing trace with hash -260427906, now seen corresponding path program 1 times [2024-11-09 05:19:15,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:19:15,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32802550] [2024-11-09 05:19:15,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:19:15,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:19:22,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:19:27,112 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-09 05:19:27,112 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:19:27,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32802550] [2024-11-09 05:19:27,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32802550] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:19:27,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128702270] [2024-11-09 05:19:27,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:19:27,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:19:27,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:19:27,116 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:19:27,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 05:19:35,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:19:35,434 INFO L255 TraceCheckSpWp]: Trace formula consists of 4331 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-09 05:19:35,443 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:19:39,462 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 2 proven. 41 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-09 05:19:39,462 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:19:47,767 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:19:47,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 914 treesize of output 994 [2024-11-09 05:19:48,108 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:19:48,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 883 treesize of output 840 [2024-11-09 05:19:48,616 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:19:48,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 825 treesize of output 806 [2024-11-09 05:19:54,579 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-09 05:19:54,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128702270] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 05:19:54,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 05:19:54,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8, 14] total 26 [2024-11-09 05:19:54,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841118085] [2024-11-09 05:19:54,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:19:54,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 05:19:54,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:19:54,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 05:19:54,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=593, Unknown=0, NotChecked=0, Total=650 [2024-11-09 05:19:54,581 INFO L87 Difference]: Start difference. First operand 499 states and 691 transitions. Second operand has 9 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-09 05:19:56,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:19:58,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:20:01,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:20:03,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:20:05,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:20:07,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:20:10,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:20:12,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:20:16,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:20:16,036 INFO L93 Difference]: Finished difference Result 528 states and 745 transitions. [2024-11-09 05:20:16,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 05:20:16,037 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 1 states have call successors, (21) Word has length 104 [2024-11-09 05:20:16,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:20:16,043 INFO L225 Difference]: With dead ends: 528 [2024-11-09 05:20:16,043 INFO L226 Difference]: Without dead ends: 526 [2024-11-09 05:20:16,044 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=61, Invalid=641, Unknown=0, NotChecked=0, Total=702 [2024-11-09 05:20:16,045 INFO L432 NwaCegarLoop]: 272 mSDtfsCounter, 3 mSDsluCounter, 1878 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 2 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2150 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:20:16,046 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2150 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 339 Invalid, 8 Unknown, 0 Unchecked, 21.1s Time] [2024-11-09 05:20:16,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2024-11-09 05:20:16,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 519. [2024-11-09 05:20:16,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 282 states have (on average 1.1950354609929077) internal successors, (337), 294 states have internal predecessors, (337), 179 states have call successors, (179), 52 states have call predecessors, (179), 57 states have return successors, (212), 172 states have call predecessors, (212), 176 states have call successors, (212) [2024-11-09 05:20:16,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 728 transitions. [2024-11-09 05:20:16,114 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 728 transitions. Word has length 104 [2024-11-09 05:20:16,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:20:16,115 INFO L471 AbstractCegarLoop]: Abstraction has 519 states and 728 transitions. [2024-11-09 05:20:16,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-09 05:20:16,116 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 728 transitions. [2024-11-09 05:20:16,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-09 05:20:16,118 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:20:16,118 INFO L215 NwaCegarLoop]: trace histogram [8, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:20:16,159 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 05:20:16,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:20:16,319 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:20:16,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:20:16,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1022278451, now seen corresponding path program 1 times [2024-11-09 05:20:16,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:20:16,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271519647] [2024-11-09 05:20:16,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:20:16,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:20:22,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:20:26,597 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-09 05:20:26,597 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:20:26,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271519647] [2024-11-09 05:20:26,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271519647] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:20:26,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29117473] [2024-11-09 05:20:26,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:20:26,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:20:26,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:20:26,599 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:20:26,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 05:20:35,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:20:35,209 INFO L255 TraceCheckSpWp]: Trace formula consists of 4343 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 05:20:35,218 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:20:39,272 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 2 proven. 41 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-09 05:20:39,273 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:20:48,391 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:20:48,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 900 treesize of output 1196 [2024-11-09 05:20:48,834 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:20:48,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 917 treesize of output 842 [2024-11-09 05:20:49,345 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:20:49,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 827 treesize of output 792 [2024-11-09 05:20:56,103 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-09 05:20:56,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29117473] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 05:20:56,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 05:20:56,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8, 14] total 26 [2024-11-09 05:20:56,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413939927] [2024-11-09 05:20:56,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:20:56,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 05:20:56,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:20:56,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 05:20:56,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2024-11-09 05:20:56,107 INFO L87 Difference]: Start difference. First operand 519 states and 728 transitions. Second operand has 10 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-09 05:20:58,216 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:21:00,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:21:02,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:21:04,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:21:07,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:21:09,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:21:11,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:21:14,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:21:16,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:21:21,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:21:21,094 INFO L93 Difference]: Finished difference Result 540 states and 757 transitions. [2024-11-09 05:21:21,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 05:21:21,095 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 1 states have call successors, (22) Word has length 108 [2024-11-09 05:21:21,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:21:21,103 INFO L225 Difference]: With dead ends: 540 [2024-11-09 05:21:21,103 INFO L226 Difference]: Without dead ends: 538 [2024-11-09 05:21:21,104 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=62, Invalid=640, Unknown=0, NotChecked=0, Total=702 [2024-11-09 05:21:21,106 INFO L432 NwaCegarLoop]: 269 mSDtfsCounter, 3 mSDsluCounter, 2065 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 2 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2334 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.7s IncrementalHoareTripleChecker+Time [2024-11-09 05:21:21,106 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2334 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 444 Invalid, 9 Unknown, 0 Unchecked, 24.7s Time] [2024-11-09 05:21:21,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2024-11-09 05:21:21,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 528. [2024-11-09 05:21:21,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 288 states have (on average 1.1909722222222223) internal successors, (343), 300 states have internal predecessors, (343), 180 states have call successors, (180), 53 states have call predecessors, (180), 59 states have return successors, (217), 174 states have call predecessors, (217), 177 states have call successors, (217) [2024-11-09 05:21:21,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 740 transitions. [2024-11-09 05:21:21,173 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 740 transitions. Word has length 108 [2024-11-09 05:21:21,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:21:21,176 INFO L471 AbstractCegarLoop]: Abstraction has 528 states and 740 transitions. [2024-11-09 05:21:21,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-09 05:21:21,177 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 740 transitions. [2024-11-09 05:21:21,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-09 05:21:21,179 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:21:21,179 INFO L215 NwaCegarLoop]: trace histogram [8, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:21:21,219 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 05:21:21,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-09 05:21:21,380 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:21:21,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:21:21,381 INFO L85 PathProgramCache]: Analyzing trace with hash -2106134514, now seen corresponding path program 1 times [2024-11-09 05:21:21,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:21:21,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965666785] [2024-11-09 05:21:21,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:21:21,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:21:27,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:21:31,555 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-09 05:21:31,555 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:21:31,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965666785] [2024-11-09 05:21:31,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965666785] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:21:31,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319265681] [2024-11-09 05:21:31,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:21:31,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:21:31,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:21:31,558 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:21:31,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 05:21:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:21:40,914 INFO L255 TraceCheckSpWp]: Trace formula consists of 4355 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 05:21:40,923 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:21:45,820 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 2 proven. 41 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-09 05:21:45,821 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:21:53,035 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:21:53,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 878 treesize of output 958 [2024-11-09 05:21:53,401 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:21:53,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 847 treesize of output 804 [2024-11-09 05:21:53,898 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:21:53,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 825 treesize of output 806 [2024-11-09 05:22:00,563 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-09 05:22:00,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319265681] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 05:22:00,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 05:22:00,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [8, 16] total 30 [2024-11-09 05:22:00,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991829228] [2024-11-09 05:22:00,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:22:00,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 05:22:00,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:22:00,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 05:22:00,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=803, Unknown=0, NotChecked=0, Total=870 [2024-11-09 05:22:00,567 INFO L87 Difference]: Start difference. First operand 528 states and 740 transitions. Second operand has 11 states, 9 states have (on average 5.555555555555555) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (22), 4 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-09 05:22:02,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:22:04,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:22:07,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:22:09,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:22:11,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:22:13,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:22:16,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:22:18,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:22:20,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:22:22,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:22:28,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:22:28,134 INFO L93 Difference]: Finished difference Result 566 states and 809 transitions. [2024-11-09 05:22:28,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 05:22:28,135 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.555555555555555) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (22), 4 states have call predecessors, (22), 1 states have call successors, (22) Word has length 110 [2024-11-09 05:22:28,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:22:28,141 INFO L225 Difference]: With dead ends: 566 [2024-11-09 05:22:28,141 INFO L226 Difference]: Without dead ends: 564 [2024-11-09 05:22:28,142 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=71, Invalid=859, Unknown=0, NotChecked=0, Total=930 [2024-11-09 05:22:28,143 INFO L432 NwaCegarLoop]: 271 mSDtfsCounter, 3 mSDsluCounter, 2412 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 3 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2683 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:22:28,144 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2683 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 429 Invalid, 10 Unknown, 0 Unchecked, 27.2s Time] [2024-11-09 05:22:28,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2024-11-09 05:22:28,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 539. [2024-11-09 05:22:28,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 295 states have (on average 1.1864406779661016) internal successors, (350), 308 states have internal predecessors, (350), 180 states have call successors, (180), 53 states have call predecessors, (180), 63 states have return successors, (233), 177 states have call predecessors, (233), 177 states have call successors, (233) [2024-11-09 05:22:28,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 763 transitions. [2024-11-09 05:22:28,208 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 763 transitions. Word has length 110 [2024-11-09 05:22:28,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:22:28,209 INFO L471 AbstractCegarLoop]: Abstraction has 539 states and 763 transitions. [2024-11-09 05:22:28,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.555555555555555) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (22), 4 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-09 05:22:28,209 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 763 transitions. [2024-11-09 05:22:28,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-09 05:22:28,211 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:22:28,211 INFO L215 NwaCegarLoop]: trace histogram [8, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:22:28,245 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 05:22:28,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:22:28,412 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:22:28,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:22:28,413 INFO L85 PathProgramCache]: Analyzing trace with hash 380899363, now seen corresponding path program 1 times [2024-11-09 05:22:28,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:22:28,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026763320] [2024-11-09 05:22:28,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:22:28,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:22:35,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:22:38,945 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-09 05:22:38,945 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:22:38,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026763320] [2024-11-09 05:22:38,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026763320] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:22:38,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959564431] [2024-11-09 05:22:38,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:22:38,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:22:38,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:22:38,947 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:22:38,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 05:22:49,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:22:49,342 INFO L255 TraceCheckSpWp]: Trace formula consists of 4367 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-09 05:22:49,354 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:22:54,690 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 2 proven. 41 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-09 05:22:54,691 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:23:04,153 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:23:04,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 936 treesize of output 1232 [2024-11-09 05:23:04,638 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:23:04,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 953 treesize of output 878 [2024-11-09 05:23:05,214 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:23:05,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 863 treesize of output 828 [2024-11-09 05:23:14,741 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-09 05:23:14,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959564431] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 05:23:14,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 05:23:14,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [8, 16] total 30 [2024-11-09 05:23:14,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850510553] [2024-11-09 05:23:14,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:23:14,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 05:23:14,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:23:14,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 05:23:14,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=802, Unknown=0, NotChecked=0, Total=870 [2024-11-09 05:23:14,746 INFO L87 Difference]: Start difference. First operand 539 states and 763 transitions. Second operand has 12 states, 10 states have (on average 5.3) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 4 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-09 05:23:16,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:23:19,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:23:21,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:23:23,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 05:23:25,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:23:28,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:23:30,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:23:32,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:23:34,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:23:37,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:23:39,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:23:46,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:23:46,320 INFO L93 Difference]: Finished difference Result 563 states and 796 transitions. [2024-11-09 05:23:46,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 05:23:46,321 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 5.3) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 4 states have call predecessors, (23), 1 states have call successors, (23) Word has length 114 [2024-11-09 05:23:46,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:23:46,326 INFO L225 Difference]: With dead ends: 563 [2024-11-09 05:23:46,326 INFO L226 Difference]: Without dead ends: 561 [2024-11-09 05:23:46,328 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=72, Invalid=858, Unknown=0, NotChecked=0, Total=930 [2024-11-09 05:23:46,328 INFO L432 NwaCegarLoop]: 268 mSDtfsCounter, 3 mSDsluCounter, 2592 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 3 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2860 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:23:46,329 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2860 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 535 Invalid, 11 Unknown, 0 Unchecked, 31.1s Time] [2024-11-09 05:23:46,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2024-11-09 05:23:46,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 537. [2024-11-09 05:23:46,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 294 states have (on average 1.1870748299319729) internal successors, (349), 306 states have internal predecessors, (349), 180 states have call successors, (180), 53 states have call predecessors, (180), 62 states have return successors, (226), 177 states have call predecessors, (226), 177 states have call successors, (226) [2024-11-09 05:23:46,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 755 transitions. [2024-11-09 05:23:46,395 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 755 transitions. Word has length 114 [2024-11-09 05:23:46,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:23:46,396 INFO L471 AbstractCegarLoop]: Abstraction has 537 states and 755 transitions. [2024-11-09 05:23:46,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 5.3) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 4 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-09 05:23:46,396 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 755 transitions. [2024-11-09 05:23:46,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-09 05:23:46,398 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:23:46,398 INFO L215 NwaCegarLoop]: trace histogram [8, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:23:46,431 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 05:23:46,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:23:46,599 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:23:46,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:23:46,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1573164791, now seen corresponding path program 1 times [2024-11-09 05:23:46,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:23:46,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623777524] [2024-11-09 05:23:46,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:23:46,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:23:54,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:23:58,847 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-09 05:23:58,848 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:23:58,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623777524] [2024-11-09 05:23:58,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623777524] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:23:58,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223917172] [2024-11-09 05:23:58,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:23:58,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:23:58,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:23:58,851 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:23:58,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0580c05b-7520-40e0-a0c2-cff5dbe41fb0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 05:24:09,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:24:09,602 INFO L255 TraceCheckSpWp]: Trace formula consists of 4396 conjuncts, 125 conjuncts are in the unsatisfiable core [2024-11-09 05:24:09,619 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:24:12,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 05:24:15,357 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_hash_table_foreach_harness_~#map~0#1.base_BEFORE_CALL_17| Int)) (and (<= 2 |v_ULTIMATE.start_aws_hash_table_foreach_harness_~#map~0#1.base_BEFORE_CALL_17|) (<= (+ (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_hash_table_foreach_harness_~#map~0#1.base_BEFORE_CALL_17|) 0) 2) |v_ULTIMATE.start_aws_hash_table_foreach_harness_~#map~0#1.base_BEFORE_CALL_17|))) is different from true [2024-11-09 05:24:33,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:24:34,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:24:34,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:24:34,080 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 05:24:34,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 54 [2024-11-09 05:24:34,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:24:34,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:24:34,198 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 05:24:34,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 23 [2024-11-09 05:24:34,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:24:34,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-09 05:24:39,561 INFO L349 Elim1Store]: treesize reduction 40, result has 51.8 percent of original size [2024-11-09 05:24:39,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 51 [2024-11-09 05:24:40,130 INFO L349 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2024-11-09 05:24:40,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 22 [2024-11-09 05:24:57,186 INFO L349 Elim1Store]: treesize reduction 402, result has 13.2 percent of original size [2024-11-09 05:24:57,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 16 case distinctions, treesize of input 96 treesize of output 139 [2024-11-09 05:24:57,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:24:58,187 INFO L349 Elim1Store]: treesize reduction 154, result has 15.8 percent of original size [2024-11-09 05:24:58,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 11 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 61 [2024-11-09 05:25:14,119 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 7 proven. 55 refuted. 4 times theorem prover too weak. 14 trivial. 2 not checked. [2024-11-09 05:25:14,120 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:25:19,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223917172] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:25:19,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1388615931] [2024-11-09 05:25:19,193 INFO L159 IcfgInterpreter]: Started Sifa with 91 locations of interest [2024-11-09 05:25:19,193 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:25:19,196 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:25:19,202 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:25:19,202 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:29:03,664 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_uint64_t with input of size 4752 for LOIs [2024-11-09 05:29:12,024 INFO L197 IcfgInterpreter]: Interpreting procedure hash_table_state_required_bytes with input of size 77 for LOIs [2024-11-09 05:29:12,355 INFO L197 IcfgInterpreter]: Interpreting procedure aws_mul_size_checked with input of size 83 for LOIs [2024-11-09 05:29:12,739 INFO L197 IcfgInterpreter]: Interpreting procedure __CPROVER_overflow_mult with input of size 67 for LOIs [2024-11-09 05:29:12,768 INFO L197 IcfgInterpreter]: Interpreting procedure aws_raise_error with input of size 52 for LOIs [2024-11-09 05:29:12,795 INFO L197 IcfgInterpreter]: Interpreting procedure aws_is_power_of_two with input of size 4788 for LOIs