./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3b33a1dc558667a4fcb18529533ebc713d63e8618dba1b7e6d3f152565826fd1 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 05:16:25,655 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 05:16:25,755 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-14 05:16:25,761 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 05:16:25,761 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 05:16:25,794 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 05:16:25,796 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 05:16:25,797 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 05:16:25,798 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 05:16:25,798 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 05:16:25,798 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 05:16:25,798 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 05:16:25,799 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 05:16:25,799 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 05:16:25,799 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 05:16:25,800 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 05:16:25,800 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 05:16:25,800 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 05:16:25,800 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 05:16:25,800 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 05:16:25,800 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 05:16:25,800 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 05:16:25,801 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 05:16:25,801 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 05:16:25,801 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 05:16:25,801 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 05:16:25,801 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 05:16:25,801 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 05:16:25,801 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 05:16:25,802 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 05:16:25,804 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 05:16:25,804 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 05:16:25,805 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 05:16:25,805 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 05:16:25,806 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 05:16:25,806 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:16:25,806 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 05:16:25,807 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 05:16:25,807 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 05:16:25,807 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 05:16:25,807 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 05:16:25,807 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 05:16:25,807 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 05:16:25,807 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 05:16:25,808 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b33a1dc558667a4fcb18529533ebc713d63e8618dba1b7e6d3f152565826fd1 [2024-11-14 05:16:26,239 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 05:16:26,254 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 05:16:26,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 05:16:26,261 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 05:16:26,261 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 05:16:26,264 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i Unable to find full path for "g++" [2024-11-14 05:16:28,901 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 05:16:29,485 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 05:16:29,488 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i [2024-11-14 05:16:29,518 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/data/eaed5d19d/9bb935c8d3b64a17bbe99edbe4b3fd58/FLAGcf09bd44c [2024-11-14 05:16:29,972 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/data/eaed5d19d/9bb935c8d3b64a17bbe99edbe4b3fd58 [2024-11-14 05:16:29,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 05:16:29,977 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 05:16:29,980 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 05:16:29,980 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 05:16:29,986 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 05:16:29,987 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:16:29" (1/1) ... [2024-11-14 05:16:29,988 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26fe47ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:29, skipping insertion in model container [2024-11-14 05:16:29,989 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:16:29" (1/1) ... [2024-11-14 05:16:30,143 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 05:16:30,481 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_0026a717-d058-42bd-8abb-85ba0a6ae6f9/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i[4506,4519] [2024-11-14 05:16:30,490 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_0026a717-d058-42bd-8abb-85ba0a6ae6f9/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i[4566,4579] [2024-11-14 05:16:31,696 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:31,697 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:31,698 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:31,699 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:31,701 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:31,722 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:31,723 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:31,726 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:31,727 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:31,730 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:31,731 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:31,733 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:31,733 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:32,734 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:32,735 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:32,746 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:32,756 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:32,905 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:32,906 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:32,907 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:32,907 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:32,907 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:32,908 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:32,908 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:32,909 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:32,909 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:32,910 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:32,910 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:32,910 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:32,910 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:32,915 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:32,916 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:32,918 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:32,918 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:32,925 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:32,928 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:32,945 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:32,948 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:32,948 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:32,966 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:16:33,053 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 05:16:33,075 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_0026a717-d058-42bd-8abb-85ba0a6ae6f9/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i[4506,4519] [2024-11-14 05:16:33,079 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_0026a717-d058-42bd-8abb-85ba0a6ae6f9/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i[4566,4579] [2024-11-14 05:16:33,172 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:33,175 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:33,175 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:33,175 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:33,176 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:33,195 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:33,195 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:33,198 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:33,198 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:33,200 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:33,201 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:33,202 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:33,202 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:33,348 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:33,349 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:33,350 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:33,358 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:33,366 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7776-7787] [2024-11-14 05:16:33,397 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:33,399 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:33,400 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:33,400 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:33,400 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:33,401 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:33,401 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:33,402 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:33,403 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:33,403 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:33,403 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:33,404 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:33,404 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:33,406 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:33,407 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:33,407 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:33,407 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:33,410 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:33,412 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:33,426 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:33,427 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:33,428 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-14 05:16:33,444 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:16:33,797 INFO L204 MainTranslator]: Completed translation [2024-11-14 05:16:33,798 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:33 WrapperNode [2024-11-14 05:16:33,799 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 05:16:33,801 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 05:16:33,802 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 05:16:33,802 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 05:16:33,810 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:33" (1/1) ... [2024-11-14 05:16:33,933 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:33" (1/1) ... [2024-11-14 05:16:34,041 INFO L138 Inliner]: procedures = 686, calls = 1900, calls flagged for inlining = 59, calls inlined = 15, statements flattened = 951 [2024-11-14 05:16:34,045 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 05:16:34,046 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 05:16:34,046 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 05:16:34,046 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 05:16:34,064 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:33" (1/1) ... [2024-11-14 05:16:34,064 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:33" (1/1) ... [2024-11-14 05:16:34,075 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:33" (1/1) ... [2024-11-14 05:16:34,075 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:33" (1/1) ... [2024-11-14 05:16:34,118 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:33" (1/1) ... [2024-11-14 05:16:34,129 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:33" (1/1) ... [2024-11-14 05:16:34,144 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:33" (1/1) ... [2024-11-14 05:16:34,153 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:33" (1/1) ... [2024-11-14 05:16:34,195 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 05:16:34,196 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 05:16:34,196 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 05:16:34,197 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 05:16:34,198 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:33" (1/1) ... [2024-11-14 05:16:34,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:16:34,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:16:34,239 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 05:16:34,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 05:16:34,283 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_either [2024-11-14 05:16:34,283 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_either [2024-11-14 05:16:34,283 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2024-11-14 05:16:34,283 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2024-11-14 05:16:34,284 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2024-11-14 05:16:34,284 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2024-11-14 05:16:34,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 05:16:34,284 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2024-11-14 05:16:34,284 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2024-11-14 05:16:34,284 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2024-11-14 05:16:34,284 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2024-11-14 05:16:34,284 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-14 05:16:34,285 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-14 05:16:34,285 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2024-11-14 05:16:34,285 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2024-11-14 05:16:34,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-14 05:16:34,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 05:16:34,285 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-11-14 05:16:34,285 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-11-14 05:16:34,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-14 05:16:34,286 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-14 05:16:34,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-14 05:16:34,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 05:16:34,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-14 05:16:34,286 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2024-11-14 05:16:34,287 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2024-11-14 05:16:34,287 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2024-11-14 05:16:34,287 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2024-11-14 05:16:34,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 05:16:34,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 05:16:34,287 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-14 05:16:34,287 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-14 05:16:34,287 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2024-11-14 05:16:34,287 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2024-11-14 05:16:34,288 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2024-11-14 05:16:34,288 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2024-11-14 05:16:34,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-14 05:16:34,288 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2024-11-14 05:16:34,288 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2024-11-14 05:16:34,288 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2024-11-14 05:16:34,288 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2024-11-14 05:16:34,288 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2024-11-14 05:16:34,288 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2024-11-14 05:16:34,289 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-14 05:16:34,289 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-14 05:16:34,289 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2024-11-14 05:16:34,289 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2024-11-14 05:16:34,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-14 05:16:34,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-14 05:16:34,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-14 05:16:34,289 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2024-11-14 05:16:34,289 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2024-11-14 05:16:34,290 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-14 05:16:34,290 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-14 05:16:34,290 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2024-11-14 05:16:34,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2024-11-14 05:16:34,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 05:16:34,290 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2024-11-14 05:16:34,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2024-11-14 05:16:34,290 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2024-11-14 05:16:34,290 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2024-11-14 05:16:34,291 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-14 05:16:34,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-14 05:16:34,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 05:16:34,852 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 05:16:34,857 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 05:16:39,825 INFO L? ?]: Removed 218 outVars from TransFormulas that were not future-live. [2024-11-14 05:16:39,825 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 05:16:40,662 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 05:16:40,662 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-14 05:16:40,663 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:16:40 BoogieIcfgContainer [2024-11-14 05:16:40,663 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 05:16:40,667 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 05:16:40,667 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 05:16:40,674 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 05:16:40,674 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 05:16:29" (1/3) ... [2024-11-14 05:16:40,675 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32fc5d48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:16:40, skipping insertion in model container [2024-11-14 05:16:40,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:16:33" (2/3) ... [2024-11-14 05:16:40,676 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32fc5d48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:16:40, skipping insertion in model container [2024-11-14 05:16:40,676 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:16:40" (3/3) ... [2024-11-14 05:16:40,677 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_either_harness.i [2024-11-14 05:16:40,696 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 05:16:40,698 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_priority_queue_s_sift_either_harness.i that has 26 procedures, 307 locations, 1 initial locations, 6 loop locations, and 2 error locations. [2024-11-14 05:16:40,787 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 05:16:40,806 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;@7644bc45, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 05:16:40,807 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-14 05:16:40,812 INFO L276 IsEmpty]: Start isEmpty. Operand has 307 states, 159 states have (on average 1.2138364779874213) internal successors, (193), 162 states have internal predecessors, (193), 120 states have call successors, (120), 25 states have call predecessors, (120), 25 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2024-11-14 05:16:40,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-14 05:16:40,835 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:16:40,836 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:16:40,837 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:16:40,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:16:40,844 INFO L85 PathProgramCache]: Analyzing trace with hash -267582567, now seen corresponding path program 1 times [2024-11-14 05:16:40,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:16:40,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717148608] [2024-11-14 05:16:40,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:16:40,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:16:50,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:16:52,585 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-14 05:16:52,588 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:16:52,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717148608] [2024-11-14 05:16:52,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717148608] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:16:52,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845252767] [2024-11-14 05:16:52,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:16:52,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:16:52,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:16:52,597 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:16:52,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 05:17:00,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:17:00,844 INFO L255 TraceCheckSpWp]: Trace formula consists of 4303 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 05:17:00,867 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:17:00,950 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-14 05:17:00,950 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:17:00,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845252767] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:17:00,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:17:00,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-14 05:17:00,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960587617] [2024-11-14 05:17:00,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:17:00,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:17:00,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:17:00,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:17:00,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:17:00,988 INFO L87 Difference]: Start difference. First operand has 307 states, 159 states have (on average 1.2138364779874213) internal successors, (193), 162 states have internal predecessors, (193), 120 states have call successors, (120), 25 states have call predecessors, (120), 25 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-14 05:17:03,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:17:05,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:17:06,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:17:06,458 INFO L93 Difference]: Finished difference Result 546 states and 810 transitions. [2024-11-14 05:17:06,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:17:06,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 108 [2024-11-14 05:17:06,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:17:06,478 INFO L225 Difference]: With dead ends: 546 [2024-11-14 05:17:06,478 INFO L226 Difference]: Without dead ends: 305 [2024-11-14 05:17:06,485 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:17:06,488 INFO L432 NwaCegarLoop]: 390 mSDtfsCounter, 0 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:17:06,489 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 775 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 2 Unknown, 0 Unchecked, 5.3s Time] [2024-11-14 05:17:06,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2024-11-14 05:17:06,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2024-11-14 05:17:06,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 159 states have (on average 1.1886792452830188) internal successors, (189), 161 states have internal predecessors, (189), 120 states have call successors, (120), 25 states have call predecessors, (120), 24 states have return successors, (118), 118 states have call predecessors, (118), 118 states have call successors, (118) [2024-11-14 05:17:06,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 427 transitions. [2024-11-14 05:17:06,576 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 427 transitions. Word has length 108 [2024-11-14 05:17:06,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:17:06,578 INFO L471 AbstractCegarLoop]: Abstraction has 305 states and 427 transitions. [2024-11-14 05:17:06,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-14 05:17:06,578 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 427 transitions. [2024-11-14 05:17:06,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-14 05:17:06,585 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:17:06,585 INFO L215 NwaCegarLoop]: trace histogram [9, 7, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:17:06,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-14 05:17:06,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-14 05:17:06,786 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:17:06,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:17:06,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1816602013, now seen corresponding path program 1 times [2024-11-14 05:17:06,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:17:06,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653817992] [2024-11-14 05:17:06,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:17:06,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:17:13,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:17:15,534 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2024-11-14 05:17:15,537 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:17:15,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653817992] [2024-11-14 05:17:15,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653817992] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:17:15,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068763805] [2024-11-14 05:17:15,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:17:15,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:17:15,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:17:15,542 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:17:15,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 05:17:24,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:17:24,187 INFO L255 TraceCheckSpWp]: Trace formula consists of 4405 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 05:17:24,195 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:17:24,815 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-14 05:17:24,815 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:17:24,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068763805] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:17:24,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:17:24,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-14 05:17:24,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136776173] [2024-11-14 05:17:24,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:17:24,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 05:17:24,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:17:24,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 05:17:24,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-14 05:17:24,818 INFO L87 Difference]: Start difference. First operand 305 states and 427 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2024-11-14 05:17:26,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:17:29,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:17:31,503 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:17:34,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:17:34,241 INFO L93 Difference]: Finished difference Result 570 states and 807 transitions. [2024-11-14 05:17:34,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 05:17:34,242 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 123 [2024-11-14 05:17:34,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:17:34,249 INFO L225 Difference]: With dead ends: 570 [2024-11-14 05:17:34,249 INFO L226 Difference]: Without dead ends: 307 [2024-11-14 05:17:34,251 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-14 05:17:34,252 INFO L432 NwaCegarLoop]: 367 mSDtfsCounter, 21 mSDsluCounter, 1041 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 1408 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:17:34,252 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 1408 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 238 Invalid, 3 Unknown, 0 Unchecked, 9.3s Time] [2024-11-14 05:17:34,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2024-11-14 05:17:34,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2024-11-14 05:17:34,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 160 states have (on average 1.1875) internal successors, (190), 163 states have internal predecessors, (190), 120 states have call successors, (120), 25 states have call predecessors, (120), 25 states have return successors, (126), 118 states have call predecessors, (126), 118 states have call successors, (126) [2024-11-14 05:17:34,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 436 transitions. [2024-11-14 05:17:34,294 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 436 transitions. Word has length 123 [2024-11-14 05:17:34,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:17:34,295 INFO L471 AbstractCegarLoop]: Abstraction has 307 states and 436 transitions. [2024-11-14 05:17:34,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2024-11-14 05:17:34,295 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 436 transitions. [2024-11-14 05:17:34,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-14 05:17:34,302 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:17:34,302 INFO L215 NwaCegarLoop]: trace histogram [9, 7, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:17:34,340 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-14 05:17:34,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:17:34,503 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:17:34,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:17:34,504 INFO L85 PathProgramCache]: Analyzing trace with hash 349768209, now seen corresponding path program 1 times [2024-11-14 05:17:34,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:17:34,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35228580] [2024-11-14 05:17:34,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:17:34,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:17:41,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:17:42,931 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2024-11-14 05:17:42,931 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:17:42,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35228580] [2024-11-14 05:17:42,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35228580] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:17:42,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497977459] [2024-11-14 05:17:42,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:17:42,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:17:42,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:17:42,934 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:17:42,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 05:17:50,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:17:50,086 INFO L255 TraceCheckSpWp]: Trace formula consists of 4455 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 05:17:50,092 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:17:51,273 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-14 05:17:51,273 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:17:51,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497977459] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:17:51,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:17:51,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-14 05:17:51,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062305451] [2024-11-14 05:17:51,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:17:51,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 05:17:51,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:17:51,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 05:17:51,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-14 05:17:51,276 INFO L87 Difference]: Start difference. First operand 307 states and 436 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2024-11-14 05:17:53,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:17:55,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:17:57,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:18:00,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:18:02,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:18:07,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:18:07,011 INFO L93 Difference]: Finished difference Result 585 states and 850 transitions. [2024-11-14 05:18:07,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 05:18:07,012 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 131 [2024-11-14 05:18:07,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:18:07,017 INFO L225 Difference]: With dead ends: 585 [2024-11-14 05:18:07,017 INFO L226 Difference]: Without dead ends: 320 [2024-11-14 05:18:07,020 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-14 05:18:07,021 INFO L432 NwaCegarLoop]: 368 mSDtfsCounter, 17 mSDsluCounter, 1763 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 2131 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:18:07,021 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 2131 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 457 Invalid, 5 Unknown, 0 Unchecked, 15.5s Time] [2024-11-14 05:18:07,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-11-14 05:18:07,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 318. [2024-11-14 05:18:07,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 168 states have (on average 1.1904761904761905) internal successors, (200), 171 states have internal predecessors, (200), 122 states have call successors, (122), 25 states have call predecessors, (122), 26 states have return successors, (139), 121 states have call predecessors, (139), 120 states have call successors, (139) [2024-11-14 05:18:07,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 461 transitions. [2024-11-14 05:18:07,063 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 461 transitions. Word has length 131 [2024-11-14 05:18:07,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:18:07,064 INFO L471 AbstractCegarLoop]: Abstraction has 318 states and 461 transitions. [2024-11-14 05:18:07,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2024-11-14 05:18:07,065 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 461 transitions. [2024-11-14 05:18:07,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-14 05:18:07,067 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:18:07,068 INFO L215 NwaCegarLoop]: trace histogram [9, 7, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:18:07,106 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-14 05:18:07,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:18:07,268 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:18:07,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:18:07,269 INFO L85 PathProgramCache]: Analyzing trace with hash -861609533, now seen corresponding path program 1 times [2024-11-14 05:18:07,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:18:07,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321178624] [2024-11-14 05:18:07,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:18:07,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:18:13,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:18:15,424 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2024-11-14 05:18:15,424 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:18:15,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321178624] [2024-11-14 05:18:15,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321178624] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:18:15,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643709109] [2024-11-14 05:18:15,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:18:15,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:18:15,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:18:15,428 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:18:15,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 05:18:23,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:18:23,487 INFO L255 TraceCheckSpWp]: Trace formula consists of 4559 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 05:18:23,493 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:18:24,407 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-14 05:18:24,407 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:18:24,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643709109] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:18:24,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:18:24,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-11-14 05:18:24,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469326998] [2024-11-14 05:18:24,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:18:24,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:18:24,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:18:24,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:18:24,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-14 05:18:24,414 INFO L87 Difference]: Start difference. First operand 318 states and 461 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2024-11-14 05:18:26,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:18:28,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:18:31,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:18:33,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:18:36,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:18:36,809 INFO L93 Difference]: Finished difference Result 600 states and 886 transitions. [2024-11-14 05:18:36,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:18:36,809 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 140 [2024-11-14 05:18:36,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:18:36,814 INFO L225 Difference]: With dead ends: 600 [2024-11-14 05:18:36,815 INFO L226 Difference]: Without dead ends: 324 [2024-11-14 05:18:36,817 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-14 05:18:36,818 INFO L432 NwaCegarLoop]: 366 mSDtfsCounter, 26 mSDsluCounter, 1379 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 1745 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:18:36,818 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 1745 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 320 Invalid, 4 Unknown, 0 Unchecked, 12.3s Time] [2024-11-14 05:18:36,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2024-11-14 05:18:36,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 318. [2024-11-14 05:18:36,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 168 states have (on average 1.1904761904761905) internal successors, (200), 171 states have internal predecessors, (200), 122 states have call successors, (122), 25 states have call predecessors, (122), 26 states have return successors, (139), 121 states have call predecessors, (139), 120 states have call successors, (139) [2024-11-14 05:18:36,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 461 transitions. [2024-11-14 05:18:36,854 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 461 transitions. Word has length 140 [2024-11-14 05:18:36,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:18:36,855 INFO L471 AbstractCegarLoop]: Abstraction has 318 states and 461 transitions. [2024-11-14 05:18:36,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2024-11-14 05:18:36,856 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 461 transitions. [2024-11-14 05:18:36,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-14 05:18:36,858 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:18:36,858 INFO L215 NwaCegarLoop]: trace histogram [9, 7, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:18:36,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-14 05:18:37,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:18:37,059 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:18:37,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:18:37,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1893015189, now seen corresponding path program 1 times [2024-11-14 05:18:37,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:18:37,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262000601] [2024-11-14 05:18:37,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:18:37,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:18:42,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:18:45,474 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2024-11-14 05:18:45,474 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:18:45,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262000601] [2024-11-14 05:18:45,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262000601] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:18:45,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184642391] [2024-11-14 05:18:45,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:18:45,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:18:45,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:18:45,477 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:18:45,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 05:18:53,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:18:53,505 INFO L255 TraceCheckSpWp]: Trace formula consists of 4599 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 05:18:53,513 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:18:55,230 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-14 05:18:55,231 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:18:55,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184642391] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:18:55,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:18:55,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2024-11-14 05:18:55,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713801807] [2024-11-14 05:18:55,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:18:55,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 05:18:55,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:18:55,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 05:18:55,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2024-11-14 05:18:55,234 INFO L87 Difference]: Start difference. First operand 318 states and 461 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2024-11-14 05:18:57,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:18:59,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:19:01,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:19:04,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:19:06,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:19:08,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:19:14,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:19:14,479 INFO L93 Difference]: Finished difference Result 611 states and 901 transitions. [2024-11-14 05:19:14,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 05:19:14,480 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) Word has length 148 [2024-11-14 05:19:14,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:19:14,485 INFO L225 Difference]: With dead ends: 611 [2024-11-14 05:19:14,486 INFO L226 Difference]: Without dead ends: 335 [2024-11-14 05:19:14,491 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2024-11-14 05:19:14,492 INFO L432 NwaCegarLoop]: 363 mSDtfsCounter, 23 mSDsluCounter, 2085 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 3 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2448 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:19:14,492 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 2448 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 541 Invalid, 6 Unknown, 0 Unchecked, 19.0s Time] [2024-11-14 05:19:14,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2024-11-14 05:19:14,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 318. [2024-11-14 05:19:14,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 168 states have (on average 1.1904761904761905) internal successors, (200), 171 states have internal predecessors, (200), 122 states have call successors, (122), 25 states have call predecessors, (122), 26 states have return successors, (139), 121 states have call predecessors, (139), 120 states have call successors, (139) [2024-11-14 05:19:14,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 461 transitions. [2024-11-14 05:19:14,574 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 461 transitions. Word has length 148 [2024-11-14 05:19:14,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:19:14,575 INFO L471 AbstractCegarLoop]: Abstraction has 318 states and 461 transitions. [2024-11-14 05:19:14,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2024-11-14 05:19:14,576 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 461 transitions. [2024-11-14 05:19:14,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-14 05:19:14,580 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:19:14,580 INFO L215 NwaCegarLoop]: trace histogram [9, 7, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:19:14,615 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-14 05:19:14,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:19:14,781 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:19:14,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:19:14,784 INFO L85 PathProgramCache]: Analyzing trace with hash -714235891, now seen corresponding path program 1 times [2024-11-14 05:19:14,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:19:14,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630700693] [2024-11-14 05:19:14,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:19:14,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:19:21,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:19:23,703 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2024-11-14 05:19:23,704 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:19:23,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630700693] [2024-11-14 05:19:23,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630700693] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:19:23,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075812559] [2024-11-14 05:19:23,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:19:23,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:19:23,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:19:23,708 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:19:23,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-14 05:19:32,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:19:32,765 INFO L255 TraceCheckSpWp]: Trace formula consists of 4703 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 05:19:32,772 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:19:34,128 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-14 05:19:34,128 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:19:34,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075812559] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:19:34,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:19:34,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-14 05:19:34,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269092051] [2024-11-14 05:19:34,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:19:34,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 05:19:34,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:19:34,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 05:19:34,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-14 05:19:34,131 INFO L87 Difference]: Start difference. First operand 318 states and 461 transitions. Second operand has 7 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) [2024-11-14 05:19:36,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:19:38,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:19:40,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:19:43,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:19:45,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:19:49,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:19:49,074 INFO L93 Difference]: Finished difference Result 566 states and 835 transitions. [2024-11-14 05:19:49,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 05:19:49,075 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) Word has length 157 [2024-11-14 05:19:49,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:19:49,079 INFO L225 Difference]: With dead ends: 566 [2024-11-14 05:19:49,080 INFO L226 Difference]: Without dead ends: 320 [2024-11-14 05:19:49,082 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-14 05:19:49,086 INFO L432 NwaCegarLoop]: 365 mSDtfsCounter, 66 mSDsluCounter, 1701 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 41 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 2066 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2024-11-14 05:19:49,086 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 2066 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 343 Invalid, 5 Unknown, 0 Unchecked, 14.8s Time] [2024-11-14 05:19:49,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-11-14 05:19:49,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2024-11-14 05:19:49,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 169 states have (on average 1.1893491124260356) internal successors, (201), 173 states have internal predecessors, (201), 122 states have call successors, (122), 25 states have call predecessors, (122), 27 states have return successors, (145), 121 states have call predecessors, (145), 120 states have call successors, (145) [2024-11-14 05:19:49,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 468 transitions. [2024-11-14 05:19:49,121 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 468 transitions. Word has length 157 [2024-11-14 05:19:49,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:19:49,123 INFO L471 AbstractCegarLoop]: Abstraction has 320 states and 468 transitions. [2024-11-14 05:19:49,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) [2024-11-14 05:19:49,126 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 468 transitions. [2024-11-14 05:19:49,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-14 05:19:49,130 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:19:49,131 INFO L215 NwaCegarLoop]: trace histogram [9, 7, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:19:49,178 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-14 05:19:49,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:19:49,332 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:19:49,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:19:49,332 INFO L85 PathProgramCache]: Analyzing trace with hash 818418107, now seen corresponding path program 1 times [2024-11-14 05:19:49,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:19:49,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582006038] [2024-11-14 05:19:49,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:19:49,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:19:54,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:19:57,288 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-14 05:19:57,288 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:19:57,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582006038] [2024-11-14 05:19:57,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582006038] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:19:57,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256156020] [2024-11-14 05:19:57,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:19:57,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:19:57,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:19:57,290 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:19:57,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-14 05:20:05,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:20:05,773 INFO L255 TraceCheckSpWp]: Trace formula consists of 4753 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 05:20:05,783 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:20:08,057 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-14 05:20:08,057 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:20:08,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256156020] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:20:08,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:20:08,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 16 [2024-11-14 05:20:08,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621688407] [2024-11-14 05:20:08,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:20:08,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 05:20:08,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:20:08,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 05:20:08,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2024-11-14 05:20:08,059 INFO L87 Difference]: Start difference. First operand 320 states and 468 transitions. Second operand has 9 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 5 states have call successors, (32), 3 states have call predecessors, (32), 4 states have return successors, (29), 4 states have call predecessors, (29), 5 states have call successors, (29) [2024-11-14 05:20:10,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:20:12,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:20:14,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:20:16,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:20:19,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:20:21,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:20:23,851 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:20:30,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:20:30,418 INFO L93 Difference]: Finished difference Result 576 states and 857 transitions. [2024-11-14 05:20:30,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 05:20:30,419 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 5 states have call successors, (32), 3 states have call predecessors, (32), 4 states have return successors, (29), 4 states have call predecessors, (29), 5 states have call successors, (29) Word has length 165 [2024-11-14 05:20:30,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:20:30,422 INFO L225 Difference]: With dead ends: 576 [2024-11-14 05:20:30,423 INFO L226 Difference]: Without dead ends: 328 [2024-11-14 05:20:30,425 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2024-11-14 05:20:30,426 INFO L432 NwaCegarLoop]: 366 mSDtfsCounter, 62 mSDsluCounter, 2415 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 37 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 2781 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:20:30,426 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 2781 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 594 Invalid, 7 Unknown, 0 Unchecked, 22.0s Time] [2024-11-14 05:20:30,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2024-11-14 05:20:30,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 326. [2024-11-14 05:20:30,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 174 states have (on average 1.1896551724137931) internal successors, (207), 177 states have internal predecessors, (207), 123 states have call successors, (123), 25 states have call predecessors, (123), 27 states have return successors, (146), 123 states have call predecessors, (146), 121 states have call successors, (146) [2024-11-14 05:20:30,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 476 transitions. [2024-11-14 05:20:30,454 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 476 transitions. Word has length 165 [2024-11-14 05:20:30,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:20:30,455 INFO L471 AbstractCegarLoop]: Abstraction has 326 states and 476 transitions. [2024-11-14 05:20:30,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 5 states have call successors, (32), 3 states have call predecessors, (32), 4 states have return successors, (29), 4 states have call predecessors, (29), 5 states have call successors, (29) [2024-11-14 05:20:30,455 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 476 transitions. [2024-11-14 05:20:30,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-14 05:20:30,459 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:20:30,459 INFO L215 NwaCegarLoop]: trace histogram [9, 7, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:20:30,495 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-14 05:20:30,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-14 05:20:30,660 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:20:30,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:20:30,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1132182763, now seen corresponding path program 1 times [2024-11-14 05:20:30,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:20:30,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200053075] [2024-11-14 05:20:30,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:20:30,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:20:35,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:20:37,090 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-14 05:20:37,090 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:20:37,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200053075] [2024-11-14 05:20:37,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200053075] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:20:37,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740885546] [2024-11-14 05:20:37,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:20:37,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:20:37,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:20:37,093 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:20:37,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-14 05:20:45,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:20:45,564 INFO L255 TraceCheckSpWp]: Trace formula consists of 4857 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 05:20:45,570 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:20:47,154 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2024-11-14 05:20:47,155 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:20:47,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740885546] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:20:47,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:20:47,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2024-11-14 05:20:47,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100647789] [2024-11-14 05:20:47,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:20:47,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 05:20:47,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:20:47,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 05:20:47,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-14 05:20:47,157 INFO L87 Difference]: Start difference. First operand 326 states and 476 transitions. Second operand has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 5 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (29), 4 states have call predecessors, (29), 5 states have call successors, (29) [2024-11-14 05:20:49,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:20:51,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:20:53,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:20:56,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:20:58,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:21:00,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:21:05,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:21:05,762 INFO L93 Difference]: Finished difference Result 586 states and 874 transitions. [2024-11-14 05:21:05,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 05:21:05,763 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 5 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (29), 4 states have call predecessors, (29), 5 states have call successors, (29) Word has length 174 [2024-11-14 05:21:05,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:21:05,771 INFO L225 Difference]: With dead ends: 586 [2024-11-14 05:21:05,771 INFO L226 Difference]: Without dead ends: 332 [2024-11-14 05:21:05,773 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-11-14 05:21:05,774 INFO L432 NwaCegarLoop]: 364 mSDtfsCounter, 71 mSDsluCounter, 2035 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 42 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 2399 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:21:05,774 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 2399 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 431 Invalid, 6 Unknown, 0 Unchecked, 18.4s Time] [2024-11-14 05:21:05,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2024-11-14 05:21:05,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 326. [2024-11-14 05:21:05,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 174 states have (on average 1.1896551724137931) internal successors, (207), 177 states have internal predecessors, (207), 123 states have call successors, (123), 25 states have call predecessors, (123), 27 states have return successors, (146), 123 states have call predecessors, (146), 121 states have call successors, (146) [2024-11-14 05:21:05,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 476 transitions. [2024-11-14 05:21:05,802 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 476 transitions. Word has length 174 [2024-11-14 05:21:05,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:21:05,803 INFO L471 AbstractCegarLoop]: Abstraction has 326 states and 476 transitions. [2024-11-14 05:21:05,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 5 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (29), 4 states have call predecessors, (29), 5 states have call successors, (29) [2024-11-14 05:21:05,803 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 476 transitions. [2024-11-14 05:21:05,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-14 05:21:05,807 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:21:05,807 INFO L215 NwaCegarLoop]: trace histogram [9, 7, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:21:05,845 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-14 05:21:06,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:21:06,008 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:21:06,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:21:06,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1738090563, now seen corresponding path program 2 times [2024-11-14 05:21:06,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:21:06,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103927554] [2024-11-14 05:21:06,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:21:06,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:21:11,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:21:14,196 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2024-11-14 05:21:14,196 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:21:14,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103927554] [2024-11-14 05:21:14,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103927554] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:21:14,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013148775] [2024-11-14 05:21:14,197 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:21:14,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:21:14,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:21:14,199 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:21:14,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0026a717-d058-42bd-8abb-85ba0a6ae6f9/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process