./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label46.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81319577-2a03-4b49-b0cd-cb4e78dbaa33/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81319577-2a03-4b49-b0cd-cb4e78dbaa33/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81319577-2a03-4b49-b0cd-cb4e78dbaa33/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81319577-2a03-4b49-b0cd-cb4e78dbaa33/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label46.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81319577-2a03-4b49-b0cd-cb4e78dbaa33/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81319577-2a03-4b49-b0cd-cb4e78dbaa33/bin/utaipan-g80aRyZoba --witnessprinter.witness.filename witness.graphml --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 32bit --witnessprinter.graph.data.programhash 14408b329878540946fe7764dd35bdde7ddb2280d1dd9f9e09220bf70c4bb1b5 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 02:30:10,294 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:30:10,297 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:30:10,321 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:30:10,321 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:30:10,323 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:30:10,324 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:30:10,327 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:30:10,329 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:30:10,330 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:30:10,331 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:30:10,333 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:30:10,333 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:30:10,335 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:30:10,336 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:30:10,338 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:30:10,339 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:30:10,340 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:30:10,342 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:30:10,344 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:30:10,346 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:30:10,348 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:30:10,349 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:30:10,350 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:30:10,355 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:30:10,355 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:30:10,356 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:30:10,357 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:30:10,358 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:30:10,359 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:30:10,360 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:30:10,361 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:30:10,362 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:30:10,363 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:30:10,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:30:10,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:30:10,366 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:30:10,366 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:30:10,367 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:30:10,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:30:10,369 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:30:10,378 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81319577-2a03-4b49-b0cd-cb4e78dbaa33/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 02:30:10,432 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:30:10,432 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:30:10,433 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:30:10,433 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:30:10,434 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:30:10,435 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:30:10,435 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:30:10,435 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:30:10,436 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:30:10,436 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:30:10,437 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:30:10,437 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:30:10,438 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:30:10,438 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:30:10,438 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:30:10,439 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:30:10,439 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:30:10,439 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:30:10,440 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:30:10,440 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 02:30:10,441 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:30:10,441 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 02:30:10,441 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:30:10,441 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:30:10,442 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:30:10,442 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:30:10,443 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 02:30:10,443 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:30:10,443 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:30:10,443 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:30:10,444 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:30:10,444 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:30:10,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:30:10,445 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:30:10,445 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:30:10,445 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:30:10,446 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:30:10,446 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:30:10,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:30:10,446 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:30:10,447 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:30:10,448 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81319577-2a03-4b49-b0cd-cb4e78dbaa33/bin/utaipan-g80aRyZoba/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81319577-2a03-4b49-b0cd-cb4e78dbaa33/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14408b329878540946fe7764dd35bdde7ddb2280d1dd9f9e09220bf70c4bb1b5 [2022-11-22 02:30:10,829 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:30:10,874 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:30:10,877 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:30:10,879 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:30:10,880 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:30:10,881 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81319577-2a03-4b49-b0cd-cb4e78dbaa33/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/eca-rers2012/Problem01_label46.c [2022-11-22 02:30:14,162 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:30:14,490 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:30:14,491 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81319577-2a03-4b49-b0cd-cb4e78dbaa33/sv-benchmarks/c/eca-rers2012/Problem01_label46.c [2022-11-22 02:30:14,504 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81319577-2a03-4b49-b0cd-cb4e78dbaa33/bin/utaipan-g80aRyZoba/data/0765af857/88bc33bd0aa1401e83552c388baccc8d/FLAG022725a88 [2022-11-22 02:30:14,525 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81319577-2a03-4b49-b0cd-cb4e78dbaa33/bin/utaipan-g80aRyZoba/data/0765af857/88bc33bd0aa1401e83552c388baccc8d [2022-11-22 02:30:14,535 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:30:14,537 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:30:14,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:30:14,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:30:14,544 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:30:14,545 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:30:14" (1/1) ... [2022-11-22 02:30:14,547 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cb70c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:14, skipping insertion in model container [2022-11-22 02:30:14,547 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:30:14" (1/1) ... [2022-11-22 02:30:14,561 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:30:14,614 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:30:15,042 WARN L237 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_81319577-2a03-4b49-b0cd-cb4e78dbaa33/sv-benchmarks/c/eca-rers2012/Problem01_label46.c[19475,19488] [2022-11-22 02:30:15,074 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:30:15,087 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:30:15,227 WARN L237 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_81319577-2a03-4b49-b0cd-cb4e78dbaa33/sv-benchmarks/c/eca-rers2012/Problem01_label46.c[19475,19488] [2022-11-22 02:30:15,254 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:30:15,278 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:30:15,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:15 WrapperNode [2022-11-22 02:30:15,280 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:30:15,282 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:30:15,282 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:30:15,282 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:30:15,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:15" (1/1) ... [2022-11-22 02:30:15,311 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:15" (1/1) ... [2022-11-22 02:30:15,371 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 657 [2022-11-22 02:30:15,371 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:30:15,372 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:30:15,373 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:30:15,373 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:30:15,384 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:15" (1/1) ... [2022-11-22 02:30:15,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:15" (1/1) ... [2022-11-22 02:30:15,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:15" (1/1) ... [2022-11-22 02:30:15,390 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:15" (1/1) ... [2022-11-22 02:30:15,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:15" (1/1) ... [2022-11-22 02:30:15,422 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:15" (1/1) ... [2022-11-22 02:30:15,441 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:15" (1/1) ... [2022-11-22 02:30:15,446 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:15" (1/1) ... [2022-11-22 02:30:15,453 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:30:15,454 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:30:15,454 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:30:15,455 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:30:15,469 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:15" (1/1) ... [2022-11-22 02:30:15,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:30:15,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81319577-2a03-4b49-b0cd-cb4e78dbaa33/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:30:15,528 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81319577-2a03-4b49-b0cd-cb4e78dbaa33/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:30:15,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81319577-2a03-4b49-b0cd-cb4e78dbaa33/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:30:15,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:30:15,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:30:15,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:30:15,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:30:15,686 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:30:15,688 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:30:17,197 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:30:17,467 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:30:17,467 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 02:30:17,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:30:17 BoogieIcfgContainer [2022-11-22 02:30:17,470 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:30:17,476 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:30:17,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:30:17,480 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:30:17,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:30:14" (1/3) ... [2022-11-22 02:30:17,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62c0dafb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:30:17, skipping insertion in model container [2022-11-22 02:30:17,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:15" (2/3) ... [2022-11-22 02:30:17,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62c0dafb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:30:17, skipping insertion in model container [2022-11-22 02:30:17,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:30:17" (3/3) ... [2022-11-22 02:30:17,486 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label46.c [2022-11-22 02:30:17,510 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:30:17,510 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 02:30:17,584 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:30:17,591 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@6f7ea23a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:30:17,591 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 02:30:17,597 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:30:17,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-22 02:30:17,609 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:30:17,610 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:30:17,611 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:30:17,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:30:17,617 INFO L85 PathProgramCache]: Analyzing trace with hash 379025031, now seen corresponding path program 1 times [2022-11-22 02:30:17,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:30:17,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251097319] [2022-11-22 02:30:17,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:30:17,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:30:17,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:30:18,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:30:18,292 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:30:18,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251097319] [2022-11-22 02:30:18,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251097319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:30:18,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:30:18,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:30:18,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968787971] [2022-11-22 02:30:18,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:30:18,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:30:18,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:30:18,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:30:18,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:30:18,361 INFO L87 Difference]: Start difference. First operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:30:19,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:30:19,011 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2022-11-22 02:30:19,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:30:19,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-11-22 02:30:19,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:30:19,035 INFO L225 Difference]: With dead ends: 224 [2022-11-22 02:30:19,036 INFO L226 Difference]: Without dead ends: 145 [2022-11-22 02:30:19,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:30:19,045 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 21 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:30:19,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 17 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 02:30:19,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-11-22 02:30:19,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2022-11-22 02:30:19,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.8819444444444444) internal successors, (271), 144 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:30:19,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 271 transitions. [2022-11-22 02:30:19,099 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 271 transitions. Word has length 71 [2022-11-22 02:30:19,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:30:19,100 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 271 transitions. [2022-11-22 02:30:19,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:30:19,100 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 271 transitions. [2022-11-22 02:30:19,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-22 02:30:19,103 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:30:19,104 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-22 02:30:19,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:30:19,104 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:30:19,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:30:19,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1708132031, now seen corresponding path program 1 times [2022-11-22 02:30:19,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:30:19,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403508100] [2022-11-22 02:30:19,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:30:19,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:30:19,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:30:19,282 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:30:19,283 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:30:19,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403508100] [2022-11-22 02:30:19,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403508100] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:30:19,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:30:19,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:30:19,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617474125] [2022-11-22 02:30:19,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:30:19,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:30:19,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:30:19,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:30:19,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:30:19,289 INFO L87 Difference]: Start difference. First operand 145 states and 271 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:30:19,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:30:19,777 INFO L93 Difference]: Finished difference Result 431 states and 810 transitions. [2022-11-22 02:30:19,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:30:19,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-11-22 02:30:19,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:30:19,781 INFO L225 Difference]: With dead ends: 431 [2022-11-22 02:30:19,781 INFO L226 Difference]: Without dead ends: 287 [2022-11-22 02:30:19,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:30:19,784 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 112 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:30:19,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 25 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:30:19,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-11-22 02:30:19,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2022-11-22 02:30:19,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.7622377622377623) internal successors, (504), 286 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:30:19,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 504 transitions. [2022-11-22 02:30:19,824 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 504 transitions. Word has length 76 [2022-11-22 02:30:19,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:30:19,830 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 504 transitions. [2022-11-22 02:30:19,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:30:19,831 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 504 transitions. [2022-11-22 02:30:19,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-22 02:30:19,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:30:19,844 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-22 02:30:19,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:30:19,845 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:30:19,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:30:19,846 INFO L85 PathProgramCache]: Analyzing trace with hash 714043750, now seen corresponding path program 1 times [2022-11-22 02:30:19,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:30:19,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831918255] [2022-11-22 02:30:19,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:30:19,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:30:19,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:30:20,096 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:30:20,097 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:30:20,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831918255] [2022-11-22 02:30:20,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831918255] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:30:20,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:30:20,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:30:20,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438398500] [2022-11-22 02:30:20,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:30:20,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:30:20,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:30:20,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:30:20,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:30:20,101 INFO L87 Difference]: Start difference. First operand 287 states and 504 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:30:20,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:30:20,511 INFO L93 Difference]: Finished difference Result 786 states and 1371 transitions. [2022-11-22 02:30:20,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:30:20,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-22 02:30:20,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:30:20,514 INFO L225 Difference]: With dead ends: 786 [2022-11-22 02:30:20,514 INFO L226 Difference]: Without dead ends: 500 [2022-11-22 02:30:20,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:30:20,528 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 62 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:30:20,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 52 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:30:20,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2022-11-22 02:30:20,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 429. [2022-11-22 02:30:20,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 428 states have (on average 1.5934579439252337) internal successors, (682), 428 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:30:20,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 682 transitions. [2022-11-22 02:30:20,578 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 682 transitions. Word has length 86 [2022-11-22 02:30:20,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:30:20,581 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 682 transitions. [2022-11-22 02:30:20,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:30:20,581 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 682 transitions. [2022-11-22 02:30:20,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-22 02:30:20,584 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:30:20,584 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-22 02:30:20,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:30:20,585 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:30:20,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:30:20,586 INFO L85 PathProgramCache]: Analyzing trace with hash 763853046, now seen corresponding path program 1 times [2022-11-22 02:30:20,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:30:20,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370485849] [2022-11-22 02:30:20,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:30:20,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:30:20,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:30:20,891 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-22 02:30:20,891 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:30:20,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370485849] [2022-11-22 02:30:20,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370485849] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:30:20,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:30:20,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:30:20,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396955565] [2022-11-22 02:30:20,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:30:20,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:30:20,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:30:20,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:30:20,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:30:20,898 INFO L87 Difference]: Start difference. First operand 429 states and 682 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:30:21,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:30:21,289 INFO L93 Difference]: Finished difference Result 999 states and 1596 transitions. [2022-11-22 02:30:21,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:30:21,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2022-11-22 02:30:21,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:30:21,292 INFO L225 Difference]: With dead ends: 999 [2022-11-22 02:30:21,293 INFO L226 Difference]: Without dead ends: 571 [2022-11-22 02:30:21,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:30:21,305 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 67 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:30:21,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 70 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:30:21,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-11-22 02:30:21,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 500. [2022-11-22 02:30:21,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 1.5330661322645291) internal successors, (765), 499 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:30:21,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 765 transitions. [2022-11-22 02:30:21,340 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 765 transitions. Word has length 87 [2022-11-22 02:30:21,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:30:21,341 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 765 transitions. [2022-11-22 02:30:21,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:30:21,341 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 765 transitions. [2022-11-22 02:30:21,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-22 02:30:21,349 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:30:21,350 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 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] [2022-11-22 02:30:21,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 02:30:21,350 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:30:21,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:30:21,352 INFO L85 PathProgramCache]: Analyzing trace with hash 2105966382, now seen corresponding path program 1 times [2022-11-22 02:30:21,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:30:21,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087702205] [2022-11-22 02:30:21,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:30:21,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:30:21,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:30:21,625 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-22 02:30:21,625 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:30:21,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087702205] [2022-11-22 02:30:21,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087702205] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:30:21,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:30:21,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:30:21,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782387398] [2022-11-22 02:30:21,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:30:21,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:30:21,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:30:21,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:30:21,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:30:21,630 INFO L87 Difference]: Start difference. First operand 500 states and 765 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:30:22,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:30:22,014 INFO L93 Difference]: Finished difference Result 1141 states and 1762 transitions. [2022-11-22 02:30:22,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:30:22,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-11-22 02:30:22,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:30:22,018 INFO L225 Difference]: With dead ends: 1141 [2022-11-22 02:30:22,018 INFO L226 Difference]: Without dead ends: 642 [2022-11-22 02:30:22,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:30:22,021 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 69 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:30:22,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 57 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:30:22,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2022-11-22 02:30:22,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2022-11-22 02:30:22,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 1.4804992199687987) internal successors, (949), 641 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:30:22,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 949 transitions. [2022-11-22 02:30:22,051 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 949 transitions. Word has length 91 [2022-11-22 02:30:22,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:30:22,052 INFO L495 AbstractCegarLoop]: Abstraction has 642 states and 949 transitions. [2022-11-22 02:30:22,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:30:22,053 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 949 transitions. [2022-11-22 02:30:22,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-22 02:30:22,057 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:30:22,058 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-11-22 02:30:22,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 02:30:22,058 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:30:22,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:30:22,059 INFO L85 PathProgramCache]: Analyzing trace with hash 768862906, now seen corresponding path program 1 times [2022-11-22 02:30:22,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:30:22,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248753680] [2022-11-22 02:30:22,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:30:22,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:30:22,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:30:22,486 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-22 02:30:22,486 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:30:22,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248753680] [2022-11-22 02:30:22,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248753680] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:30:22,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:30:22,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:30:22,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686097830] [2022-11-22 02:30:22,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:30:22,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:30:22,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:30:22,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:30:22,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:30:22,489 INFO L87 Difference]: Start difference. First operand 642 states and 949 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:30:23,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:30:23,098 INFO L93 Difference]: Finished difference Result 1567 states and 2289 transitions. [2022-11-22 02:30:23,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:30:23,100 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2022-11-22 02:30:23,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:30:23,104 INFO L225 Difference]: With dead ends: 1567 [2022-11-22 02:30:23,104 INFO L226 Difference]: Without dead ends: 926 [2022-11-22 02:30:23,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:30:23,106 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 152 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:30:23,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 55 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 02:30:23,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2022-11-22 02:30:23,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 855. [2022-11-22 02:30:23,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 1.4379391100702577) internal successors, (1228), 854 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:30:23,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1228 transitions. [2022-11-22 02:30:23,130 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1228 transitions. Word has length 120 [2022-11-22 02:30:23,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:30:23,131 INFO L495 AbstractCegarLoop]: Abstraction has 855 states and 1228 transitions. [2022-11-22 02:30:23,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:30:23,131 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1228 transitions. [2022-11-22 02:30:23,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-22 02:30:23,133 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:30:23,134 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-22 02:30:23,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 02:30:23,134 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:30:23,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:30:23,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1488493789, now seen corresponding path program 1 times [2022-11-22 02:30:23,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:30:23,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332396858] [2022-11-22 02:30:23,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:30:23,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:30:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:30:23,448 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-22 02:30:23,448 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:30:23,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332396858] [2022-11-22 02:30:23,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332396858] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:30:23,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:30:23,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:30:23,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755885517] [2022-11-22 02:30:23,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:30:23,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:30:23,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:30:23,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:30:23,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:30:23,451 INFO L87 Difference]: Start difference. First operand 855 states and 1228 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:30:24,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:30:24,160 INFO L93 Difference]: Finished difference Result 1851 states and 2621 transitions. [2022-11-22 02:30:24,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:30:24,161 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2022-11-22 02:30:24,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:30:24,165 INFO L225 Difference]: With dead ends: 1851 [2022-11-22 02:30:24,165 INFO L226 Difference]: Without dead ends: 997 [2022-11-22 02:30:24,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:30:24,167 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 104 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:30:24,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 38 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 02:30:24,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2022-11-22 02:30:24,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 855. [2022-11-22 02:30:24,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 1.3747072599531616) internal successors, (1174), 854 states have internal predecessors, (1174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:30:24,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1174 transitions. [2022-11-22 02:30:24,191 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1174 transitions. Word has length 137 [2022-11-22 02:30:24,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:30:24,191 INFO L495 AbstractCegarLoop]: Abstraction has 855 states and 1174 transitions. [2022-11-22 02:30:24,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:30:24,192 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1174 transitions. [2022-11-22 02:30:24,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-22 02:30:24,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:30:24,195 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-22 02:30:24,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 02:30:24,196 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:30:24,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:30:24,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1747505042, now seen corresponding path program 1 times [2022-11-22 02:30:24,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:30:24,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678566713] [2022-11-22 02:30:24,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:30:24,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:30:24,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:30:24,469 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-22 02:30:24,470 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:30:24,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678566713] [2022-11-22 02:30:24,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678566713] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:30:24,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:30:24,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:30:24,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113327073] [2022-11-22 02:30:24,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:30:24,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:30:24,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:30:24,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:30:24,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:30:24,473 INFO L87 Difference]: Start difference. First operand 855 states and 1174 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:30:24,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:30:24,897 INFO L93 Difference]: Finished difference Result 1851 states and 2513 transitions. [2022-11-22 02:30:24,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:30:24,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2022-11-22 02:30:24,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:30:24,902 INFO L225 Difference]: With dead ends: 1851 [2022-11-22 02:30:24,903 INFO L226 Difference]: Without dead ends: 997 [2022-11-22 02:30:24,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:30:24,905 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 28 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:30:24,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 124 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:30:24,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2022-11-22 02:30:24,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 926. [2022-11-22 02:30:24,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 925 states have (on average 1.2940540540540542) internal successors, (1197), 925 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:30:24,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1197 transitions. [2022-11-22 02:30:24,931 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1197 transitions. Word has length 164 [2022-11-22 02:30:24,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:30:24,932 INFO L495 AbstractCegarLoop]: Abstraction has 926 states and 1197 transitions. [2022-11-22 02:30:24,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:30:24,932 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1197 transitions. [2022-11-22 02:30:24,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-11-22 02:30:24,936 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:30:24,936 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-22 02:30:24,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 02:30:24,937 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:30:24,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:30:24,937 INFO L85 PathProgramCache]: Analyzing trace with hash 243934839, now seen corresponding path program 1 times [2022-11-22 02:30:24,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:30:24,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610468321] [2022-11-22 02:30:24,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:30:24,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:30:25,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:30:25,202 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-11-22 02:30:25,203 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:30:25,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610468321] [2022-11-22 02:30:25,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610468321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:30:25,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:30:25,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:30:25,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424174037] [2022-11-22 02:30:25,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:30:25,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:30:25,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:30:25,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:30:25,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:30:25,206 INFO L87 Difference]: Start difference. First operand 926 states and 1197 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:30:25,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:30:25,599 INFO L93 Difference]: Finished difference Result 1141 states and 1459 transitions. [2022-11-22 02:30:25,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:30:25,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 186 [2022-11-22 02:30:25,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:30:25,604 INFO L225 Difference]: With dead ends: 1141 [2022-11-22 02:30:25,605 INFO L226 Difference]: Without dead ends: 1139 [2022-11-22 02:30:25,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:30:25,609 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 20 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:30:25,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 27 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:30:25,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2022-11-22 02:30:25,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 926. [2022-11-22 02:30:25,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 925 states have (on average 1.2929729729729729) internal successors, (1196), 925 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:30:25,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1196 transitions. [2022-11-22 02:30:25,639 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1196 transitions. Word has length 186 [2022-11-22 02:30:25,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:30:25,640 INFO L495 AbstractCegarLoop]: Abstraction has 926 states and 1196 transitions. [2022-11-22 02:30:25,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:30:25,640 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1196 transitions. [2022-11-22 02:30:25,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-11-22 02:30:25,645 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:30:25,645 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-22 02:30:25,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 02:30:25,646 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:30:25,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:30:25,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1896309135, now seen corresponding path program 1 times [2022-11-22 02:30:25,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:30:25,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799749947] [2022-11-22 02:30:25,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:30:25,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:30:25,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:30:26,733 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 256 proven. 142 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-22 02:30:26,733 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:30:26,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799749947] [2022-11-22 02:30:26,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799749947] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:30:26,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806468983] [2022-11-22 02:30:26,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:30:26,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:30:26,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81319577-2a03-4b49-b0cd-cb4e78dbaa33/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:30:26,740 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81319577-2a03-4b49-b0cd-cb4e78dbaa33/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:30:26,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81319577-2a03-4b49-b0cd-cb4e78dbaa33/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:30:26,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:30:26,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 02:30:26,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:30:27,318 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-11-22 02:30:27,319 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:30:27,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806468983] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:30:27,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:30:27,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-22 02:30:27,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661674226] [2022-11-22 02:30:27,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:30:27,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:30:27,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:30:27,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:30:27,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:30:27,322 INFO L87 Difference]: Start difference. First operand 926 states and 1196 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:30:27,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:30:27,746 INFO L93 Difference]: Finished difference Result 1849 states and 2390 transitions. [2022-11-22 02:30:27,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:30:27,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 241 [2022-11-22 02:30:27,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:30:27,748 INFO L225 Difference]: With dead ends: 1849 [2022-11-22 02:30:27,748 INFO L226 Difference]: Without dead ends: 0 [2022-11-22 02:30:27,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:30:27,752 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 6 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:30:27,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 123 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:30:27,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-22 02:30:27,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-22 02:30:27,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:30:27,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-22 02:30:27,754 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 241 [2022-11-22 02:30:27,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:30:27,754 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-22 02:30:27,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:30:27,754 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-22 02:30:27,755 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-22 02:30:27,760 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-22 02:30:27,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81319577-2a03-4b49-b0cd-cb4e78dbaa33/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 02:30:27,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81319577-2a03-4b49-b0cd-cb4e78dbaa33/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-22 02:30:27,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-22 02:30:28,490 INFO L899 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2022-11-22 02:30:28,490 INFO L899 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2022-11-22 02:30:28,491 INFO L899 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2022-11-22 02:30:28,491 INFO L899 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2022-11-22 02:30:28,491 INFO L899 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2022-11-22 02:30:28,491 INFO L899 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2022-11-22 02:30:28,491 INFO L899 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2022-11-22 02:30:28,491 INFO L899 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2022-11-22 02:30:28,491 INFO L899 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2022-11-22 02:30:28,491 INFO L899 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2022-11-22 02:30:28,491 INFO L899 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2022-11-22 02:30:28,491 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2022-11-22 02:30:28,492 INFO L899 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2022-11-22 02:30:28,492 INFO L899 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2022-11-22 02:30:28,492 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2022-11-22 02:30:28,492 INFO L899 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2022-11-22 02:30:28,492 INFO L899 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2022-11-22 02:30:28,492 INFO L899 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2022-11-22 02:30:28,492 INFO L899 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2022-11-22 02:30:28,492 INFO L899 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2022-11-22 02:30:28,493 INFO L899 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2022-11-22 02:30:28,493 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2022-11-22 02:30:28,493 INFO L899 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2022-11-22 02:30:28,493 INFO L899 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2022-11-22 02:30:28,493 INFO L899 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2022-11-22 02:30:28,493 INFO L899 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2022-11-22 02:30:28,493 INFO L899 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2022-11-22 02:30:28,493 INFO L899 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2022-11-22 02:30:28,493 INFO L899 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2022-11-22 02:30:28,493 INFO L899 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2022-11-22 02:30:28,494 INFO L899 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2022-11-22 02:30:28,494 INFO L899 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2022-11-22 02:30:28,494 INFO L899 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2022-11-22 02:30:28,494 INFO L899 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2022-11-22 02:30:28,494 INFO L899 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2022-11-22 02:30:28,494 INFO L899 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2022-11-22 02:30:28,494 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-22 02:30:28,494 INFO L899 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2022-11-22 02:30:28,494 INFO L899 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2022-11-22 02:30:28,495 INFO L899 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2022-11-22 02:30:28,495 INFO L895 garLoopResultBuilder]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse3 (<= ~a21~0 0)) (.cse1 (<= ~a16~0 5)) (.cse2 (= ~a16~0 6)) (.cse0 (= ~a21~0 1))) (or (and .cse0 .cse1) (and .cse2 .cse3) (and .cse3 .cse1) (and .cse2 .cse0 (<= 15 ~a8~0)) (and .cse0 (= ~a20~0 1)))) [2022-11-22 02:30:28,495 INFO L899 garLoopResultBuilder]: For program point L518-1(lines 40 585) no Hoare annotation was computed. [2022-11-22 02:30:28,495 INFO L899 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2022-11-22 02:30:28,496 INFO L899 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2022-11-22 02:30:28,496 INFO L899 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2022-11-22 02:30:28,496 INFO L899 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2022-11-22 02:30:28,496 INFO L899 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2022-11-22 02:30:28,496 INFO L899 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2022-11-22 02:30:28,496 INFO L899 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2022-11-22 02:30:28,496 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-22 02:30:28,496 INFO L899 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2022-11-22 02:30:28,496 INFO L902 garLoopResultBuilder]: At program point L587(lines 587 604) the Hoare annotation is: true [2022-11-22 02:30:28,497 INFO L899 garLoopResultBuilder]: For program point L521-1(lines 40 585) no Hoare annotation was computed. [2022-11-22 02:30:28,497 INFO L899 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2022-11-22 02:30:28,497 INFO L899 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2022-11-22 02:30:28,497 INFO L899 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2022-11-22 02:30:28,497 INFO L899 garLoopResultBuilder]: For program point L522(line 522) no Hoare annotation was computed. [2022-11-22 02:30:28,497 INFO L899 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2022-11-22 02:30:28,497 INFO L899 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2022-11-22 02:30:28,497 INFO L899 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2022-11-22 02:30:28,498 INFO L899 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2022-11-22 02:30:28,498 INFO L899 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2022-11-22 02:30:28,498 INFO L899 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2022-11-22 02:30:28,498 INFO L899 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2022-11-22 02:30:28,498 INFO L899 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2022-11-22 02:30:28,498 INFO L899 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2022-11-22 02:30:28,498 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2022-11-22 02:30:28,498 INFO L895 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse3 (<= ~a21~0 0)) (.cse1 (<= ~a16~0 5)) (.cse2 (= ~a16~0 6)) (.cse0 (= ~a21~0 1))) (or (and .cse0 .cse1) (and .cse2 .cse3) (and .cse3 .cse1) (and .cse2 .cse0 (<= 15 ~a8~0)) (and .cse0 (= ~a20~0 1)))) [2022-11-22 02:30:28,499 INFO L899 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2022-11-22 02:30:28,499 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 522) no Hoare annotation was computed. [2022-11-22 02:30:28,499 INFO L899 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2022-11-22 02:30:28,499 INFO L899 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2022-11-22 02:30:28,499 INFO L899 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2022-11-22 02:30:28,499 INFO L899 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2022-11-22 02:30:28,499 INFO L899 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2022-11-22 02:30:28,499 INFO L899 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2022-11-22 02:30:28,503 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:30:28,508 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 02:30:28,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 02:30:28 BoogieIcfgContainer [2022-11-22 02:30:28,525 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 02:30:28,526 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 02:30:28,526 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 02:30:28,526 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 02:30:28,527 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:30:17" (3/4) ... [2022-11-22 02:30:28,531 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-22 02:30:28,550 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 110 nodes and edges [2022-11-22 02:30:28,551 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2022-11-22 02:30:28,552 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-11-22 02:30:28,554 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-22 02:30:28,682 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81319577-2a03-4b49-b0cd-cb4e78dbaa33/bin/utaipan-g80aRyZoba/witness.graphml [2022-11-22 02:30:28,683 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 02:30:28,683 INFO L158 Benchmark]: Toolchain (without parser) took 14146.34ms. Allocated memory was 136.3MB in the beginning and 295.7MB in the end (delta: 159.4MB). Free memory was 92.7MB in the beginning and 185.7MB in the end (delta: -93.0MB). Peak memory consumption was 66.0MB. Max. memory is 16.1GB. [2022-11-22 02:30:28,684 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 109.1MB. Free memory is still 77.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 02:30:28,684 INFO L158 Benchmark]: CACSL2BoogieTranslator took 741.30ms. Allocated memory is still 136.3MB. Free memory was 92.4MB in the beginning and 86.8MB in the end (delta: 5.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-22 02:30:28,685 INFO L158 Benchmark]: Boogie Procedure Inliner took 90.16ms. Allocated memory is still 136.3MB. Free memory was 86.5MB in the beginning and 80.9MB in the end (delta: 5.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-22 02:30:28,685 INFO L158 Benchmark]: Boogie Preprocessor took 81.05ms. Allocated memory is still 136.3MB. Free memory was 80.9MB in the beginning and 76.3MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-22 02:30:28,685 INFO L158 Benchmark]: RCFGBuilder took 2016.41ms. Allocated memory was 136.3MB in the beginning and 167.8MB in the end (delta: 31.5MB). Free memory was 76.3MB in the beginning and 125.9MB in the end (delta: -49.6MB). Peak memory consumption was 59.0MB. Max. memory is 16.1GB. [2022-11-22 02:30:28,686 INFO L158 Benchmark]: TraceAbstraction took 11049.71ms. Allocated memory was 167.8MB in the beginning and 295.7MB in the end (delta: 127.9MB). Free memory was 125.9MB in the beginning and 196.1MB in the end (delta: -70.2MB). Peak memory consumption was 56.7MB. Max. memory is 16.1GB. [2022-11-22 02:30:28,686 INFO L158 Benchmark]: Witness Printer took 156.67ms. Allocated memory is still 295.7MB. Free memory was 196.1MB in the beginning and 185.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-22 02:30:28,688 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 109.1MB. Free memory is still 77.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 741.30ms. Allocated memory is still 136.3MB. Free memory was 92.4MB in the beginning and 86.8MB in the end (delta: 5.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 90.16ms. Allocated memory is still 136.3MB. Free memory was 86.5MB in the beginning and 80.9MB in the end (delta: 5.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 81.05ms. Allocated memory is still 136.3MB. Free memory was 80.9MB in the beginning and 76.3MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 2016.41ms. Allocated memory was 136.3MB in the beginning and 167.8MB in the end (delta: 31.5MB). Free memory was 76.3MB in the beginning and 125.9MB in the end (delta: -49.6MB). Peak memory consumption was 59.0MB. Max. memory is 16.1GB. * TraceAbstraction took 11049.71ms. Allocated memory was 167.8MB in the beginning and 295.7MB in the end (delta: 127.9MB). Free memory was 125.9MB in the beginning and 196.1MB in the end (delta: -70.2MB). Peak memory consumption was 56.7MB. Max. memory is 16.1GB. * Witness Printer took 156.67ms. Allocated memory is still 295.7MB. Free memory was 196.1MB in the beginning and 185.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 522]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10.9s, OverallIterations: 10, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 5.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 641 SdHoareTripleChecker+Valid, 4.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 641 mSDsluCounter, 588 SdHoareTripleChecker+Invalid, 3.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 45 mSDsCounter, 694 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2457 IncrementalHoareTripleChecker+Invalid, 3151 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 694 mSolverCounterUnsat, 543 mSDtfsCounter, 2457 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 269 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=926occurred in iteration=8, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 639 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 31 NumberOfFragments, 79 HoareAnnotationTreeSize, 3 FomulaSimplifications, 6 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 3 FomulaSimplificationsInter, 1674 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 1500 NumberOfCodeBlocks, 1500 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1489 ConstructedInterpolants, 0 QuantifiedInterpolants, 4332 SizeOfPredicates, 0 NumberOfNonLiveVariables, 534 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 11 InterpolantComputations, 10 PerfectInterpolantSequences, 1234/1376 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((a21 == 1 && a16 <= 5) || (a16 == 6 && a21 <= 0)) || (a21 <= 0 && a16 <= 5)) || ((a16 == 6 && a21 == 1) && 15 <= a8)) || (a21 == 1 && a20 == 1) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((a21 == 1 && a16 <= 5) || (a16 == 6 && a21 <= 0)) || (a21 <= 0 && a16 <= 5)) || ((a16 == 6 && a21 == 1) && 15 <= a8)) || (a21 == 1 && a20 == 1) RESULT: Ultimate proved your program to be correct! [2022-11-22 02:30:28,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81319577-2a03-4b49-b0cd-cb4e78dbaa33/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE