./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P --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 23d3becec5645fa497625df98df84137049a5fde6a7d2da6a420cf3c624fd037 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:39:50,456 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:39:50,459 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:39:50,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:39:50,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:39:50,500 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:39:50,503 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:39:50,506 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:39:50,509 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:39:50,511 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:39:50,512 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:39:50,514 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:39:50,515 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:39:50,517 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:39:50,519 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:39:50,521 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:39:50,523 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:39:50,524 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:39:50,527 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:39:50,530 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:39:50,533 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:39:50,535 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:39:50,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:39:50,539 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:39:50,544 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:39:50,544 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:39:50,545 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:39:50,546 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:39:50,547 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:39:50,549 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:39:50,549 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:39:50,551 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:39:50,552 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:39:50,553 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:39:50,555 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:39:50,555 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:39:50,557 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:39:50,557 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:39:50,558 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:39:50,559 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:39:50,560 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:39:50,562 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 01:39:50,598 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:39:50,598 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:39:50,599 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:39:50,599 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:39:50,600 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:39:50,600 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:39:50,601 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:39:50,601 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:39:50,601 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:39:50,602 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:39:50,602 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:39:50,602 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:39:50,603 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:39:50,603 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:39:50,603 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:39:50,603 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:39:50,604 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:39:50,604 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:39:50,605 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:39:50,605 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:39:50,606 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:39:50,606 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:39:50,606 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:39:50,607 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:39:50,607 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:39:50,607 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:39:50,607 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:39:50,608 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:39:50,608 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:39:50,608 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:39:50,609 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:39:50,609 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:39:50,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:39:50,610 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:39:50,610 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:39:50,610 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:39:50,611 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:39:50,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:39:50,611 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:39:50,612 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:39:50,612 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:39:50,612 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23d3becec5645fa497625df98df84137049a5fde6a7d2da6a420cf3c624fd037 [2021-11-21 01:39:50,937 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:39:50,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:39:50,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:39:50,971 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:39:50,974 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:39:50,975 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2021-11-21 01:39:51,071 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/data/8dd3b032c/4b59bc8e012248488cd355682d04b378/FLAG3c93e9b80 [2021-11-21 01:39:51,503 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:39:51,504 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2021-11-21 01:39:51,512 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/data/8dd3b032c/4b59bc8e012248488cd355682d04b378/FLAG3c93e9b80 [2021-11-21 01:39:51,890 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/data/8dd3b032c/4b59bc8e012248488cd355682d04b378 [2021-11-21 01:39:51,893 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:39:51,895 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:39:51,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:39:51,898 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:39:51,917 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:39:51,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:39:51" (1/1) ... [2021-11-21 01:39:51,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b562b18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:39:51, skipping insertion in model container [2021-11-21 01:39:51,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:39:51" (1/1) ... [2021-11-21 01:39:51,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:39:51,956 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:39:52,211 WARN L230 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_2514c8fc-994d-4eaa-837c-3ae12397ce8b/sv-benchmarks/c/float-newlib/double_req_bl_1130a.c[4166,4179] [2021-11-21 01:39:52,215 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:39:52,224 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:39:52,282 WARN L230 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_2514c8fc-994d-4eaa-837c-3ae12397ce8b/sv-benchmarks/c/float-newlib/double_req_bl_1130a.c[4166,4179] [2021-11-21 01:39:52,283 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:39:52,301 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:39:52,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:39:52 WrapperNode [2021-11-21 01:39:52,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:39:52,304 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:39:52,304 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:39:52,304 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:39:52,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:39:52" (1/1) ... [2021-11-21 01:39:52,328 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:39:52" (1/1) ... [2021-11-21 01:39:52,366 INFO L137 Inliner]: procedures = 19, calls = 39, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 242 [2021-11-21 01:39:52,366 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:39:52,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:39:52,368 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:39:52,368 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:39:52,378 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:39:52" (1/1) ... [2021-11-21 01:39:52,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:39:52" (1/1) ... [2021-11-21 01:39:52,385 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:39:52" (1/1) ... [2021-11-21 01:39:52,385 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:39:52" (1/1) ... [2021-11-21 01:39:52,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:39:52" (1/1) ... [2021-11-21 01:39:52,420 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:39:52" (1/1) ... [2021-11-21 01:39:52,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:39:52" (1/1) ... [2021-11-21 01:39:52,441 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:39:52,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:39:52,443 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:39:52,443 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:39:52,444 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:39:52" (1/1) ... [2021-11-21 01:39:52,467 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:39:52,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:39:52,495 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:39:52,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:39:52,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:39:52,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:39:52,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:39:52,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:39:52,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-21 01:39:52,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-21 01:39:52,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:39:52,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:39:52,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:39:52,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-11-21 01:39:52,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:39:52,634 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:39:52,636 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:39:53,168 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:39:53,265 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:39:53,270 INFO L301 CfgBuilder]: Removed 16 assume(true) statements. [2021-11-21 01:39:53,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:39:53 BoogieIcfgContainer [2021-11-21 01:39:53,278 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:39:53,281 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:39:53,283 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:39:53,287 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:39:53,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:39:51" (1/3) ... [2021-11-21 01:39:53,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17625385 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:39:53, skipping insertion in model container [2021-11-21 01:39:53,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:39:52" (2/3) ... [2021-11-21 01:39:53,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17625385 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:39:53, skipping insertion in model container [2021-11-21 01:39:53,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:39:53" (3/3) ... [2021-11-21 01:39:53,293 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2021-11-21 01:39:53,300 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:39:53,300 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:39:53,360 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:39:53,368 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:39:53,369 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:39:53,387 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 43 states have (on average 1.7674418604651163) internal successors, (76), 44 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) [2021-11-21 01:39:53,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-21 01:39:53,394 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:39:53,395 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:39:53,395 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:39:53,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:39:53,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1875325126, now seen corresponding path program 1 times [2021-11-21 01:39:53,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:39:53,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98946634] [2021-11-21 01:39:53,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:39:53,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:39:53,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:39:53,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:39:53,575 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:39:53,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98946634] [2021-11-21 01:39:53,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98946634] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:39:53,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:39:53,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 01:39:53,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731241553] [2021-11-21 01:39:53,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:39:53,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-21 01:39:53,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:39:53,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-21 01:39:53,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:39:53,634 INFO L87 Difference]: Start difference. First operand has 45 states, 43 states have (on average 1.7674418604651163) internal successors, (76), 44 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) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-11-21 01:39:53,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:39:53,730 INFO L93 Difference]: Finished difference Result 88 states and 149 transitions. [2021-11-21 01:39:53,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-21 01:39:53,735 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2021-11-21 01:39:53,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:39:53,746 INFO L225 Difference]: With dead ends: 88 [2021-11-21 01:39:53,746 INFO L226 Difference]: Without dead ends: 42 [2021-11-21 01:39:53,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:39:53,754 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:39:53,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:39:53,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-11-21 01:39:53,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-11-21 01:39:53,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.4634146341463414) internal successors, (60), 41 states have internal predecessors, (60), 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) [2021-11-21 01:39:53,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 60 transitions. [2021-11-21 01:39:53,800 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 60 transitions. Word has length 10 [2021-11-21 01:39:53,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:39:53,802 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 60 transitions. [2021-11-21 01:39:53,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-11-21 01:39:53,804 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 60 transitions. [2021-11-21 01:39:53,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-21 01:39:53,807 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:39:53,807 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:39:53,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:39:53,808 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:39:53,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:39:53,811 INFO L85 PathProgramCache]: Analyzing trace with hash -86320413, now seen corresponding path program 1 times [2021-11-21 01:39:53,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:39:53,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035957977] [2021-11-21 01:39:53,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:39:53,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:39:53,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:39:53,888 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 01:39:53,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:39:53,996 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-21 01:39:53,997 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-21 01:39:53,999 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-21 01:39:54,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:39:54,005 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-21 01:39:54,008 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 01:39:54,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 01:39:54 BoogieIcfgContainer [2021-11-21 01:39:54,038 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 01:39:54,039 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 01:39:54,039 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 01:39:54,039 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 01:39:54,040 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:39:53" (3/4) ... [2021-11-21 01:39:54,043 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-21 01:39:54,043 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 01:39:54,044 INFO L158 Benchmark]: Toolchain (without parser) took 2148.92ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 56.8MB in the beginning and 79.0MB in the end (delta: -22.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:39:54,045 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 100.7MB. Free memory is still 73.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:39:54,046 INFO L158 Benchmark]: CACSL2BoogieTranslator took 405.09ms. Allocated memory is still 100.7MB. Free memory was 56.6MB in the beginning and 72.1MB in the end (delta: -15.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-21 01:39:54,046 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.26ms. Allocated memory is still 100.7MB. Free memory was 72.1MB in the beginning and 69.4MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:39:54,047 INFO L158 Benchmark]: Boogie Preprocessor took 74.09ms. Allocated memory is still 100.7MB. Free memory was 69.4MB in the beginning and 67.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:39:54,048 INFO L158 Benchmark]: RCFGBuilder took 836.10ms. Allocated memory is still 100.7MB. Free memory was 67.4MB in the beginning and 44.1MB in the end (delta: 23.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-11-21 01:39:54,049 INFO L158 Benchmark]: TraceAbstraction took 757.25ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 43.6MB in the beginning and 79.7MB in the end (delta: -36.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:39:54,049 INFO L158 Benchmark]: Witness Printer took 4.79ms. Allocated memory is still 121.6MB. Free memory was 79.7MB in the beginning and 79.0MB in the end (delta: 685.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:39:54,053 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 100.7MB. Free memory is still 73.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 405.09ms. Allocated memory is still 100.7MB. Free memory was 56.6MB in the beginning and 72.1MB in the end (delta: -15.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.26ms. Allocated memory is still 100.7MB. Free memory was 72.1MB in the beginning and 69.4MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 74.09ms. Allocated memory is still 100.7MB. Free memory was 69.4MB in the beginning and 67.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 836.10ms. Allocated memory is still 100.7MB. Free memory was 67.4MB in the beginning and 44.1MB in the end (delta: 23.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 757.25ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 43.6MB in the beginning and 79.7MB in the end (delta: -36.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.79ms. Allocated memory is still 121.6MB. Free memory was 79.7MB in the beginning and 79.0MB in the end (delta: 685.5kB). There was no memory consumed. 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 - UnprovableResult [Line: 193]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 46, overapproximation of someUnaryDOUBLEoperation at line 22, overapproximation of bitwiseAnd at line 41, overapproximation of someBinaryArithmeticDOUBLEoperation at line 47, overapproximation of someBinaryDOUBLEComparisonOperation at line 192, overapproximation of bitwiseXor at line 42. Possible FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L184] double x = 0.0; [L185] double y = __VERIFIER_nondet_double(); [L187] COND TRUE y < 0.0 || y > 0.0 [L189] CALL, EXPR fmod_double(x, y) [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; VAL [\old(x)=0, \old(y)=8589934593, one_fmod=1, x=0, y=8589934593, Zero_fmod={4:0}] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff VAL [\old(x)=0, \old(y)=8589934593, lx=8589934591, ly=8589934594, one_fmod=1, sx=-1, x=0, y=8589934593, Zero_fmod={4:0}] [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); VAL [\old(x)=0, \old(y)=8589934593, hx=2146435072, lx=8589934591, ly=8589934594, one_fmod=1, sx=-1, x=0, y=8589934593, Zero_fmod={4:0}] [L189] RET, EXPR fmod_double(x, y) [L189] double res = fmod_double(x, y); [L192] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [one_fmod=1, res=8589934592, res == 0.0 && __signbit_double(res) == 0=0, x=0, y=8589934593, Zero_fmod={4:0}] [L192] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L193] reach_error() VAL [one_fmod=1, res=8589934592, x=0, y=8589934593, Zero_fmod={4:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 48 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16 IncrementalHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 48 mSDtfsCounter, 16 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-21 01:39:54,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P --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 23d3becec5645fa497625df98df84137049a5fde6a7d2da6a420cf3c624fd037 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:39:56,920 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:39:56,923 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:39:56,964 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:39:56,964 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:39:56,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:39:56,969 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:39:56,972 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:39:56,975 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:39:56,977 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:39:56,979 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:39:56,981 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:39:56,981 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:39:56,983 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:39:56,985 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:39:56,988 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:39:56,989 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:39:56,991 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:39:56,994 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:39:56,997 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:39:57,000 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:39:57,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:39:57,004 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:39:57,006 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:39:57,011 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:39:57,012 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:39:57,012 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:39:57,014 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:39:57,015 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:39:57,016 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:39:57,017 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:39:57,018 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:39:57,020 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:39:57,021 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:39:57,035 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:39:57,042 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:39:57,043 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:39:57,044 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:39:57,044 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:39:57,046 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:39:57,047 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:39:57,049 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-21 01:39:57,101 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:39:57,101 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:39:57,102 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:39:57,102 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:39:57,103 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:39:57,103 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:39:57,103 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:39:57,103 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:39:57,104 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:39:57,104 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:39:57,104 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:39:57,104 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:39:57,105 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:39:57,106 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:39:57,106 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:39:57,106 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:39:57,106 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:39:57,106 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:39:57,107 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:39:57,107 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-21 01:39:57,107 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-21 01:39:57,107 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:39:57,108 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:39:57,108 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:39:57,108 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:39:57,108 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:39:57,109 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-21 01:39:57,109 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:39:57,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:39:57,109 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:39:57,110 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:39:57,110 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:39:57,110 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-21 01:39:57,110 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-21 01:39:57,110 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:39:57,111 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:39:57,111 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:39:57,111 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23d3becec5645fa497625df98df84137049a5fde6a7d2da6a420cf3c624fd037 [2021-11-21 01:39:57,574 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:39:57,600 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:39:57,604 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:39:57,606 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:39:57,607 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:39:57,608 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2021-11-21 01:39:57,711 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/data/ac4eb0719/832c123548344a0bb42f7c70f35ffabf/FLAGfe3239525 [2021-11-21 01:39:58,418 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:39:58,432 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2021-11-21 01:39:58,445 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/data/ac4eb0719/832c123548344a0bb42f7c70f35ffabf/FLAGfe3239525 [2021-11-21 01:39:58,729 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/data/ac4eb0719/832c123548344a0bb42f7c70f35ffabf [2021-11-21 01:39:58,732 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:39:58,735 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:39:58,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:39:58,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:39:58,744 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:39:58,745 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:39:58" (1/1) ... [2021-11-21 01:39:58,746 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75c34ce3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:39:58, skipping insertion in model container [2021-11-21 01:39:58,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:39:58" (1/1) ... [2021-11-21 01:39:58,757 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:39:58,807 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:39:59,051 WARN L230 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_2514c8fc-994d-4eaa-837c-3ae12397ce8b/sv-benchmarks/c/float-newlib/double_req_bl_1130a.c[4166,4179] [2021-11-21 01:39:59,055 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:39:59,070 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:39:59,195 WARN L230 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_2514c8fc-994d-4eaa-837c-3ae12397ce8b/sv-benchmarks/c/float-newlib/double_req_bl_1130a.c[4166,4179] [2021-11-21 01:39:59,196 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:39:59,220 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:39:59,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:39:59 WrapperNode [2021-11-21 01:39:59,221 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:39:59,223 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:39:59,223 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:39:59,223 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:39:59,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:39:59" (1/1) ... [2021-11-21 01:39:59,253 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:39:59" (1/1) ... [2021-11-21 01:39:59,291 INFO L137 Inliner]: procedures = 22, calls = 39, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 242 [2021-11-21 01:39:59,292 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:39:59,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:39:59,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:39:59,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:39:59,305 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:39:59" (1/1) ... [2021-11-21 01:39:59,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:39:59" (1/1) ... [2021-11-21 01:39:59,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:39:59" (1/1) ... [2021-11-21 01:39:59,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:39:59" (1/1) ... [2021-11-21 01:39:59,349 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:39:59" (1/1) ... [2021-11-21 01:39:59,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:39:59" (1/1) ... [2021-11-21 01:39:59,361 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:39:59" (1/1) ... [2021-11-21 01:39:59,378 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:39:59,379 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:39:59,379 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:39:59,380 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:39:59,380 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:39:59" (1/1) ... [2021-11-21 01:39:59,394 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:39:59,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:39:59,422 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:39:59,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:39:59,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:39:59,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-11-21 01:39:59,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-11-21 01:39:59,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-21 01:39:59,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:39:59,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2021-11-21 01:39:59,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-21 01:39:59,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:39:59,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:39:59,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-21 01:39:59,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:39:59,606 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:39:59,609 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:40:03,057 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:40:03,067 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:40:03,067 INFO L301 CfgBuilder]: Removed 16 assume(true) statements. [2021-11-21 01:40:03,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:40:03 BoogieIcfgContainer [2021-11-21 01:40:03,069 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:40:03,079 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:40:03,079 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:40:03,082 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:40:03,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:39:58" (1/3) ... [2021-11-21 01:40:03,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c369739 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:40:03, skipping insertion in model container [2021-11-21 01:40:03,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:39:59" (2/3) ... [2021-11-21 01:40:03,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c369739 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:40:03, skipping insertion in model container [2021-11-21 01:40:03,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:40:03" (3/3) ... [2021-11-21 01:40:03,091 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2021-11-21 01:40:03,097 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:40:03,097 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:40:03,173 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:40:03,183 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:40:03,184 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:40:03,220 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 59 states have (on average 1.7966101694915255) internal successors, (106), 60 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) [2021-11-21 01:40:03,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-21 01:40:03,227 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:40:03,231 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:40:03,233 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:40:03,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:40:03,245 INFO L85 PathProgramCache]: Analyzing trace with hash 464220005, now seen corresponding path program 1 times [2021-11-21 01:40:03,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:40:03,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [235308427] [2021-11-21 01:40:03,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:40:03,258 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:40:03,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:40:03,263 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:40:03,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-21 01:40:04,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:40:04,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-21 01:40:04,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:40:04,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:40:04,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:40:04,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:40:04,649 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:40:04,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [235308427] [2021-11-21 01:40:04,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [235308427] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:40:04,650 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:40:04,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-21 01:40:04,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274386860] [2021-11-21 01:40:04,653 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:40:04,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-21 01:40:04,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:40:04,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-21 01:40:04,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:40:04,686 INFO L87 Difference]: Start difference. First operand has 61 states, 59 states have (on average 1.7966101694915255) internal successors, (106), 60 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) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2021-11-21 01:40:04,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:40:04,709 INFO L93 Difference]: Finished difference Result 119 states and 208 transitions. [2021-11-21 01:40:04,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-21 01:40:04,711 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 11 [2021-11-21 01:40:04,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:40:04,720 INFO L225 Difference]: With dead ends: 119 [2021-11-21 01:40:04,720 INFO L226 Difference]: Without dead ends: 57 [2021-11-21 01:40:04,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:40:04,727 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:40:04,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:40:04,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-21 01:40:04,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-11-21 01:40:04,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.5) internal successors, (84), 56 states have internal predecessors, (84), 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) [2021-11-21 01:40:04,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 84 transitions. [2021-11-21 01:40:04,764 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 84 transitions. Word has length 11 [2021-11-21 01:40:04,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:40:04,765 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 84 transitions. [2021-11-21 01:40:04,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2021-11-21 01:40:04,765 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 84 transitions. [2021-11-21 01:40:04,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-21 01:40:04,766 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:40:04,766 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:40:04,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:40:04,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:40:04,983 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:40:04,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:40:04,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1051323842, now seen corresponding path program 1 times [2021-11-21 01:40:04,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:40:04,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2137622356] [2021-11-21 01:40:04,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:40:04,985 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:40:04,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:40:04,987 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:40:04,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-21 01:40:06,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:40:06,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-21 01:40:06,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:40:06,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2021-11-21 01:40:07,574 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:40:07,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 71 [2021-11-21 01:40:07,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2021-11-21 01:40:11,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:40:11,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:40:13,152 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:40:13,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 130 treesize of output 109 [2021-11-21 01:40:13,340 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:40:13,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 109 treesize of output 123 [2021-11-21 01:40:13,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-21 01:40:15,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:40:15,403 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:40:15,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2137622356] [2021-11-21 01:40:15,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2137622356] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:40:15,404 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:40:15,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-21 01:40:15,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684194557] [2021-11-21 01:40:15,405 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:40:15,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 01:40:15,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:40:15,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 01:40:15,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=104, Unknown=1, NotChecked=0, Total=132 [2021-11-21 01:40:15,408 INFO L87 Difference]: Start difference. First operand 57 states and 84 transitions. Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 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) [2021-11-21 01:40:18,543 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 01:40:18,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:40:18,543 INFO L93 Difference]: Finished difference Result 66 states and 93 transitions. [2021-11-21 01:40:18,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:40:18,574 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 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 13 [2021-11-21 01:40:18,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:40:18,575 INFO L225 Difference]: With dead ends: 66 [2021-11-21 01:40:18,576 INFO L226 Difference]: Without dead ends: 57 [2021-11-21 01:40:18,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=42, Invalid=139, Unknown=1, NotChecked=0, Total=182 [2021-11-21 01:40:18,578 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 8 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:40:18,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 469 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 1 Unknown, 69 Unchecked, 2.8s Time] [2021-11-21 01:40:18,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-21 01:40:18,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-11-21 01:40:18,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.4821428571428572) internal successors, (83), 56 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) [2021-11-21 01:40:18,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 83 transitions. [2021-11-21 01:40:18,589 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 83 transitions. Word has length 13 [2021-11-21 01:40:18,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:40:18,590 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 83 transitions. [2021-11-21 01:40:18,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 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) [2021-11-21 01:40:18,590 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 83 transitions. [2021-11-21 01:40:18,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-21 01:40:18,591 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:40:18,592 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:40:18,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-21 01:40:18,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:40:18,813 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:40:18,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:40:18,813 INFO L85 PathProgramCache]: Analyzing trace with hash 734189607, now seen corresponding path program 1 times [2021-11-21 01:40:18,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:40:18,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1616690065] [2021-11-21 01:40:18,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:40:18,815 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:40:18,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:40:18,816 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:40:18,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-21 01:40:18,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:40:18,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 01:40:18,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:40:19,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:40:19,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:40:19,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:40:19,784 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:40:19,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1616690065] [2021-11-21 01:40:19,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1616690065] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:40:19,784 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:40:19,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-11-21 01:40:19,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482727664] [2021-11-21 01:40:19,784 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:40:19,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-21 01:40:19,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:40:19,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-21 01:40:19,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-21 01:40:19,786 INFO L87 Difference]: Start difference. First operand 57 states and 83 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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) [2021-11-21 01:40:22,431 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 01:40:22,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:40:22,541 INFO L93 Difference]: Finished difference Result 78 states and 103 transitions. [2021-11-21 01:40:22,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 01:40:22,541 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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 15 [2021-11-21 01:40:22,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:40:22,555 INFO L225 Difference]: With dead ends: 78 [2021-11-21 01:40:22,556 INFO L226 Difference]: Without dead ends: 75 [2021-11-21 01:40:22,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:40:22,558 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 356 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:40:22,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 316 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2021-11-21 01:40:22,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-11-21 01:40:22,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 59. [2021-11-21 01:40:22,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.4655172413793103) internal successors, (85), 58 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) [2021-11-21 01:40:22,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 85 transitions. [2021-11-21 01:40:22,572 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 85 transitions. Word has length 15 [2021-11-21 01:40:22,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:40:22,572 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 85 transitions. [2021-11-21 01:40:22,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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) [2021-11-21 01:40:22,573 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 85 transitions. [2021-11-21 01:40:22,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-21 01:40:22,574 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:40:22,574 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:40:22,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-21 01:40:22,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:40:22,789 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:40:22,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:40:22,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1151454894, now seen corresponding path program 1 times [2021-11-21 01:40:22,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:40:22,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1243296336] [2021-11-21 01:40:22,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:40:22,791 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:40:22,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:40:22,792 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:40:22,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-21 01:40:22,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:40:22,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-21 01:40:22,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:40:23,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 27 [2021-11-21 01:40:24,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:40:24,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:40:25,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 39 [2021-11-21 01:40:26,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:40:26,020 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:40:26,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1243296336] [2021-11-21 01:40:26,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1243296336] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:40:26,020 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:40:26,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-11-21 01:40:26,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880508731] [2021-11-21 01:40:26,021 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:40:26,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 01:40:26,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:40:26,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 01:40:26,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:40:26,023 INFO L87 Difference]: Start difference. First operand 59 states and 85 transitions. Second operand has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 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) [2021-11-21 01:40:27,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:40:27,154 INFO L93 Difference]: Finished difference Result 88 states and 122 transitions. [2021-11-21 01:40:27,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 01:40:27,156 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 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 16 [2021-11-21 01:40:27,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:40:27,157 INFO L225 Difference]: With dead ends: 88 [2021-11-21 01:40:27,158 INFO L226 Difference]: Without dead ends: 79 [2021-11-21 01:40:27,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-11-21 01:40:27,160 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 34 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 73 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:40:27,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 549 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 96 Invalid, 0 Unknown, 73 Unchecked, 0.9s Time] [2021-11-21 01:40:27,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-11-21 01:40:27,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 59. [2021-11-21 01:40:27,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.4482758620689655) internal successors, (84), 58 states have internal predecessors, (84), 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) [2021-11-21 01:40:27,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 84 transitions. [2021-11-21 01:40:27,171 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 84 transitions. Word has length 16 [2021-11-21 01:40:27,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:40:27,172 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 84 transitions. [2021-11-21 01:40:27,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 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) [2021-11-21 01:40:27,172 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 84 transitions. [2021-11-21 01:40:27,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-21 01:40:27,173 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:40:27,174 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:40:27,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-21 01:40:27,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:40:27,379 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:40:27,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:40:27,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1071102724, now seen corresponding path program 1 times [2021-11-21 01:40:27,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:40:27,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [141105937] [2021-11-21 01:40:27,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:40:27,381 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:40:27,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:40:27,382 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:40:27,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-21 01:40:27,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:40:27,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-21 01:40:27,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:40:28,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:40:28,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:40:30,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:40:30,396 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:40:30,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [141105937] [2021-11-21 01:40:30,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [141105937] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:40:30,396 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:40:30,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 16 [2021-11-21 01:40:30,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97339565] [2021-11-21 01:40:30,397 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:40:30,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-21 01:40:30,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:40:30,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-21 01:40:30,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-11-21 01:40:30,399 INFO L87 Difference]: Start difference. First operand 59 states and 84 transitions. Second operand has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 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) [2021-11-21 01:40:31,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:40:31,809 INFO L93 Difference]: Finished difference Result 77 states and 100 transitions. [2021-11-21 01:40:31,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-21 01:40:31,809 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 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 19 [2021-11-21 01:40:31,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:40:31,815 INFO L225 Difference]: With dead ends: 77 [2021-11-21 01:40:31,815 INFO L226 Difference]: Without dead ends: 68 [2021-11-21 01:40:31,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=122, Invalid=430, Unknown=0, NotChecked=0, Total=552 [2021-11-21 01:40:31,820 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 244 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:40:31,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 763 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 43 Unchecked, 0.3s Time] [2021-11-21 01:40:31,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-11-21 01:40:31,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 57. [2021-11-21 01:40:31,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.4464285714285714) internal successors, (81), 56 states have internal predecessors, (81), 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) [2021-11-21 01:40:31,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 81 transitions. [2021-11-21 01:40:31,835 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 81 transitions. Word has length 19 [2021-11-21 01:40:31,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:40:31,835 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 81 transitions. [2021-11-21 01:40:31,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 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) [2021-11-21 01:40:31,835 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 81 transitions. [2021-11-21 01:40:31,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-21 01:40:31,836 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:40:31,836 INFO L514 BasicCegarLoop]: 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] [2021-11-21 01:40:31,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-21 01:40:32,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:40:32,037 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:40:32,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:40:32,038 INFO L85 PathProgramCache]: Analyzing trace with hash -2103758894, now seen corresponding path program 1 times [2021-11-21 01:40:32,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:40:32,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1769459375] [2021-11-21 01:40:32,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:40:32,038 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:40:32,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:40:32,039 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:40:32,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-21 01:40:32,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:40:32,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-21 01:40:32,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:40:32,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:40:32,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:40:33,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:40:33,736 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:40:33,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1769459375] [2021-11-21 01:40:33,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1769459375] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:40:33,736 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:40:33,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-21 01:40:33,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057404479] [2021-11-21 01:40:33,737 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:40:33,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-21 01:40:33,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:40:33,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-21 01:40:33,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-21 01:40:33,738 INFO L87 Difference]: Start difference. First operand 57 states and 81 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-11-21 01:40:34,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:40:34,011 INFO L93 Difference]: Finished difference Result 102 states and 149 transitions. [2021-11-21 01:40:34,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:40:34,012 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 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 24 [2021-11-21 01:40:34,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:40:34,013 INFO L225 Difference]: With dead ends: 102 [2021-11-21 01:40:34,013 INFO L226 Difference]: Without dead ends: 57 [2021-11-21 01:40:34,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-11-21 01:40:34,016 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 18 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:40:34,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 309 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 33 Unchecked, 0.1s Time] [2021-11-21 01:40:34,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-21 01:40:34,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-11-21 01:40:34,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.4285714285714286) internal successors, (80), 56 states have internal predecessors, (80), 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) [2021-11-21 01:40:34,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 80 transitions. [2021-11-21 01:40:34,024 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 80 transitions. Word has length 24 [2021-11-21 01:40:34,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:40:34,025 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 80 transitions. [2021-11-21 01:40:34,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-11-21 01:40:34,025 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 80 transitions. [2021-11-21 01:40:34,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-21 01:40:34,027 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:40:34,027 INFO L514 BasicCegarLoop]: 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] [2021-11-21 01:40:34,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-21 01:40:34,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:40:34,242 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:40:34,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:40:34,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1391759413, now seen corresponding path program 1 times [2021-11-21 01:40:34,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:40:34,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [253230996] [2021-11-21 01:40:34,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:40:34,244 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:40:34,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:40:34,245 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:40:34,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-21 01:40:34,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:40:34,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-21 01:40:34,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:40:35,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:40:35,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:40:35,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:40:35,896 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:40:35,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [253230996] [2021-11-21 01:40:35,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [253230996] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:40:35,896 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:40:35,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [] total 9 [2021-11-21 01:40:35,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093629936] [2021-11-21 01:40:35,897 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:40:35,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-21 01:40:35,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:40:35,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-21 01:40:35,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-21 01:40:35,898 INFO L87 Difference]: Start difference. First operand 57 states and 80 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 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) [2021-11-21 01:40:36,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:40:36,544 INFO L93 Difference]: Finished difference Result 113 states and 161 transitions. [2021-11-21 01:40:36,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:40:36,546 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 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 26 [2021-11-21 01:40:36,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:40:36,547 INFO L225 Difference]: With dead ends: 113 [2021-11-21 01:40:36,547 INFO L226 Difference]: Without dead ends: 74 [2021-11-21 01:40:36,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-21 01:40:36,548 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 45 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:40:36,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 426 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 37 Unchecked, 0.5s Time] [2021-11-21 01:40:36,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-11-21 01:40:36,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 57. [2021-11-21 01:40:36,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.4107142857142858) internal successors, (79), 56 states have internal predecessors, (79), 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) [2021-11-21 01:40:36,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 79 transitions. [2021-11-21 01:40:36,557 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 79 transitions. Word has length 26 [2021-11-21 01:40:36,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:40:36,557 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 79 transitions. [2021-11-21 01:40:36,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 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) [2021-11-21 01:40:36,558 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 79 transitions. [2021-11-21 01:40:36,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-21 01:40:36,559 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:40:36,560 INFO L514 BasicCegarLoop]: 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] [2021-11-21 01:40:36,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-21 01:40:36,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:40:36,776 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:40:36,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:40:36,777 INFO L85 PathProgramCache]: Analyzing trace with hash -244554330, now seen corresponding path program 1 times [2021-11-21 01:40:36,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:40:36,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [735236450] [2021-11-21 01:40:36,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:40:36,778 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:40:36,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:40:36,780 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:40:36,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-21 01:40:36,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:40:36,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-21 01:40:36,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:40:37,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:40:37,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:40:38,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:40:38,419 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:40:38,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [735236450] [2021-11-21 01:40:38,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [735236450] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:40:38,420 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:40:38,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [] total 9 [2021-11-21 01:40:38,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042871671] [2021-11-21 01:40:38,420 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:40:38,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-21 01:40:38,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:40:38,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-21 01:40:38,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-21 01:40:38,422 INFO L87 Difference]: Start difference. First operand 57 states and 79 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 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) [2021-11-21 01:40:40,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:40:40,116 INFO L93 Difference]: Finished difference Result 105 states and 146 transitions. [2021-11-21 01:40:40,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:40:40,146 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 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 28 [2021-11-21 01:40:40,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:40:40,147 INFO L225 Difference]: With dead ends: 105 [2021-11-21 01:40:40,147 INFO L226 Difference]: Without dead ends: 64 [2021-11-21 01:40:40,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-11-21 01:40:40,149 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 41 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:40:40,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 410 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 38 Unchecked, 1.3s Time] [2021-11-21 01:40:40,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-21 01:40:40,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 55. [2021-11-21 01:40:40,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.3888888888888888) internal successors, (75), 54 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) [2021-11-21 01:40:40,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 75 transitions. [2021-11-21 01:40:40,157 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 75 transitions. Word has length 28 [2021-11-21 01:40:40,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:40:40,158 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 75 transitions. [2021-11-21 01:40:40,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 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) [2021-11-21 01:40:40,158 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 75 transitions. [2021-11-21 01:40:40,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-21 01:40:40,160 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:40:40,160 INFO L514 BasicCegarLoop]: 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] [2021-11-21 01:40:40,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-21 01:40:40,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:40:40,365 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:40:40,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:40:40,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1905417094, now seen corresponding path program 1 times [2021-11-21 01:40:40,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:40:40,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [983672017] [2021-11-21 01:40:40,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:40:40,366 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:40:40,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:40:40,368 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:40:40,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-21 01:40:40,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:40:40,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:40:40,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:40:40,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:40:40,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:40:40,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:40:40,963 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:40:40,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [983672017] [2021-11-21 01:40:40,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [983672017] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:40:40,963 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:40:40,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-21 01:40:40,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962770161] [2021-11-21 01:40:40,964 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:40:40,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:40:40,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:40:40,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:40:40,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:40:40,965 INFO L87 Difference]: Start difference. First operand 55 states and 75 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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) [2021-11-21 01:40:41,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:40:41,180 INFO L93 Difference]: Finished difference Result 166 states and 238 transitions. [2021-11-21 01:40:41,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:40:41,181 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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 28 [2021-11-21 01:40:41,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:40:41,183 INFO L225 Difference]: With dead ends: 166 [2021-11-21 01:40:41,183 INFO L226 Difference]: Without dead ends: 135 [2021-11-21 01:40:41,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:40:41,185 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 169 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:40:41,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 196 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:40:41,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-11-21 01:40:41,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 65. [2021-11-21 01:40:41,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.421875) internal successors, (91), 64 states have internal predecessors, (91), 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) [2021-11-21 01:40:41,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 91 transitions. [2021-11-21 01:40:41,196 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 91 transitions. Word has length 28 [2021-11-21 01:40:41,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:40:41,197 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 91 transitions. [2021-11-21 01:40:41,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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) [2021-11-21 01:40:41,197 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 91 transitions. [2021-11-21 01:40:41,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-21 01:40:41,199 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:40:41,199 INFO L514 BasicCegarLoop]: 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] [2021-11-21 01:40:41,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-21 01:40:41,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:40:41,436 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:40:41,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:40:41,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1604243380, now seen corresponding path program 1 times [2021-11-21 01:40:41,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:40:41,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2006443722] [2021-11-21 01:40:41,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:40:41,437 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:40:41,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:40:41,439 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:40:41,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-21 01:40:41,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:40:41,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-21 01:40:41,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:40:43,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:40:43,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:40:44,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:40:44,491 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:40:44,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2006443722] [2021-11-21 01:40:44,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2006443722] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:40:44,491 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:40:44,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-21 01:40:44,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795022372] [2021-11-21 01:40:44,492 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:40:44,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 01:40:44,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:40:44,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 01:40:44,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-21 01:40:44,493 INFO L87 Difference]: Start difference. First operand 65 states and 91 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 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) [2021-11-21 01:40:45,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:40:45,187 INFO L93 Difference]: Finished difference Result 113 states and 158 transitions. [2021-11-21 01:40:45,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 01:40:45,188 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 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 29 [2021-11-21 01:40:45,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:40:45,189 INFO L225 Difference]: With dead ends: 113 [2021-11-21 01:40:45,189 INFO L226 Difference]: Without dead ends: 79 [2021-11-21 01:40:45,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:40:45,191 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 46 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:40:45,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 372 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 28 Unchecked, 0.4s Time] [2021-11-21 01:40:45,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-11-21 01:40:45,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 65. [2021-11-21 01:40:45,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.390625) internal successors, (89), 64 states have internal predecessors, (89), 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) [2021-11-21 01:40:45,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 89 transitions. [2021-11-21 01:40:45,200 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 89 transitions. Word has length 29 [2021-11-21 01:40:45,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:40:45,201 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 89 transitions. [2021-11-21 01:40:45,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 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) [2021-11-21 01:40:45,201 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 89 transitions. [2021-11-21 01:40:45,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-21 01:40:45,203 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:40:45,203 INFO L514 BasicCegarLoop]: 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] [2021-11-21 01:40:45,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-21 01:40:45,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:40:45,411 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:40:45,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:40:45,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1093238151, now seen corresponding path program 1 times [2021-11-21 01:40:45,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:40:45,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2064108049] [2021-11-21 01:40:45,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:40:45,412 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:40:45,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:40:45,413 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:40:45,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-21 01:40:45,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:40:45,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:40:45,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:40:46,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:40:46,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:40:46,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:40:46,884 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:40:46,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2064108049] [2021-11-21 01:40:46,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2064108049] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:40:46,884 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:40:46,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-21 01:40:46,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114701065] [2021-11-21 01:40:46,884 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:40:46,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 01:40:46,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:40:46,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 01:40:46,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:40:46,886 INFO L87 Difference]: Start difference. First operand 65 states and 89 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 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) [2021-11-21 01:40:47,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:40:47,037 INFO L93 Difference]: Finished difference Result 101 states and 142 transitions. [2021-11-21 01:40:47,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:40:47,038 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 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 31 [2021-11-21 01:40:47,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:40:47,040 INFO L225 Difference]: With dead ends: 101 [2021-11-21 01:40:47,040 INFO L226 Difference]: Without dead ends: 67 [2021-11-21 01:40:47,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:40:47,041 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 2 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:40:47,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 285 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 20 Unchecked, 0.1s Time] [2021-11-21 01:40:47,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-11-21 01:40:47,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-11-21 01:40:47,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.378787878787879) internal successors, (91), 66 states have internal predecessors, (91), 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) [2021-11-21 01:40:47,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 91 transitions. [2021-11-21 01:40:47,050 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 91 transitions. Word has length 31 [2021-11-21 01:40:47,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:40:47,050 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 91 transitions. [2021-11-21 01:40:47,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 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) [2021-11-21 01:40:47,051 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 91 transitions. [2021-11-21 01:40:47,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-21 01:40:47,052 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:40:47,052 INFO L514 BasicCegarLoop]: 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] [2021-11-21 01:40:47,079 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-21 01:40:47,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:40:47,267 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:40:47,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:40:47,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1051757721, now seen corresponding path program 1 times [2021-11-21 01:40:47,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:40:47,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [929388920] [2021-11-21 01:40:47,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:40:47,268 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:40:47,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:40:47,269 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:40:47,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-21 01:40:47,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:40:47,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:40:47,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:40:47,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:40:47,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:40:47,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:40:47,772 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:40:47,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [929388920] [2021-11-21 01:40:47,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [929388920] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:40:47,773 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:40:47,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-21 01:40:47,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861159371] [2021-11-21 01:40:47,773 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:40:47,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:40:47,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:40:47,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:40:47,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:40:47,774 INFO L87 Difference]: Start difference. First operand 67 states and 91 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2021-11-21 01:40:47,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:40:47,958 INFO L93 Difference]: Finished difference Result 160 states and 226 transitions. [2021-11-21 01:40:47,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:40:47,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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 31 [2021-11-21 01:40:47,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:40:47,960 INFO L225 Difference]: With dead ends: 160 [2021-11-21 01:40:47,960 INFO L226 Difference]: Without dead ends: 131 [2021-11-21 01:40:47,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:40:47,961 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 122 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:40:47,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 166 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:40:47,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-11-21 01:40:47,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 105. [2021-11-21 01:40:47,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.4807692307692308) internal successors, (154), 104 states have internal predecessors, (154), 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) [2021-11-21 01:40:47,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 154 transitions. [2021-11-21 01:40:47,973 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 154 transitions. Word has length 31 [2021-11-21 01:40:47,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:40:47,973 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 154 transitions. [2021-11-21 01:40:47,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2021-11-21 01:40:47,974 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 154 transitions. [2021-11-21 01:40:47,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-21 01:40:47,975 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:40:47,975 INFO L514 BasicCegarLoop]: 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] [2021-11-21 01:40:47,992 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-21 01:40:48,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:40:48,192 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:40:48,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:40:48,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1156639288, now seen corresponding path program 1 times [2021-11-21 01:40:48,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:40:48,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [74250273] [2021-11-21 01:40:48,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:40:48,194 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:40:48,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:40:48,195 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:40:48,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-21 01:40:48,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:40:48,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:40:48,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:40:48,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:40:48,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:40:48,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:40:48,846 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:40:48,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [74250273] [2021-11-21 01:40:48,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [74250273] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:40:48,847 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:40:48,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-21 01:40:48,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118877184] [2021-11-21 01:40:48,847 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:40:48,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:40:48,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:40:48,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:40:48,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:40:48,848 INFO L87 Difference]: Start difference. First operand 105 states and 154 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 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) [2021-11-21 01:40:49,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:40:49,651 INFO L93 Difference]: Finished difference Result 227 states and 310 transitions. [2021-11-21 01:40:49,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 01:40:49,652 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 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 32 [2021-11-21 01:40:49,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:40:49,656 INFO L225 Difference]: With dead ends: 227 [2021-11-21 01:40:49,656 INFO L226 Difference]: Without dead ends: 185 [2021-11-21 01:40:49,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-21 01:40:49,657 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 110 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:40:49,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 361 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-21 01:40:49,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-11-21 01:40:49,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 122. [2021-11-21 01:40:49,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 1.4793388429752066) internal successors, (179), 121 states have internal predecessors, (179), 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) [2021-11-21 01:40:49,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 179 transitions. [2021-11-21 01:40:49,671 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 179 transitions. Word has length 32 [2021-11-21 01:40:49,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:40:49,672 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 179 transitions. [2021-11-21 01:40:49,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 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) [2021-11-21 01:40:49,673 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 179 transitions. [2021-11-21 01:40:49,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-21 01:40:49,674 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:40:49,674 INFO L514 BasicCegarLoop]: 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] [2021-11-21 01:40:49,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-21 01:40:49,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:40:49,887 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:40:49,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:40:49,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1857703866, now seen corresponding path program 1 times [2021-11-21 01:40:49,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:40:49,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1910404082] [2021-11-21 01:40:49,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:40:49,888 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:40:49,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:40:49,889 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:40:49,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-21 01:40:50,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:40:50,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:40:50,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:40:50,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:40:50,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:40:50,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:40:50,905 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:40:50,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1910404082] [2021-11-21 01:40:50,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1910404082] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:40:50,906 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:40:50,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-11-21 01:40:50,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169097126] [2021-11-21 01:40:50,906 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:40:50,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 01:40:50,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:40:50,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 01:40:50,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:40:50,908 INFO L87 Difference]: Start difference. First operand 122 states and 179 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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) [2021-11-21 01:40:51,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:40:51,665 INFO L93 Difference]: Finished difference Result 258 states and 372 transitions. [2021-11-21 01:40:51,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:40:51,666 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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 32 [2021-11-21 01:40:51,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:40:51,668 INFO L225 Difference]: With dead ends: 258 [2021-11-21 01:40:51,668 INFO L226 Difference]: Without dead ends: 223 [2021-11-21 01:40:51,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-21 01:40:51,670 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 125 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:40:51,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 354 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-21 01:40:51,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-11-21 01:40:51,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 132. [2021-11-21 01:40:51,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.465648854961832) internal successors, (192), 131 states have internal predecessors, (192), 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) [2021-11-21 01:40:51,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 192 transitions. [2021-11-21 01:40:51,683 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 192 transitions. Word has length 32 [2021-11-21 01:40:51,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:40:51,683 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 192 transitions. [2021-11-21 01:40:51,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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) [2021-11-21 01:40:51,684 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 192 transitions. [2021-11-21 01:40:51,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-21 01:40:51,685 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:40:51,685 INFO L514 BasicCegarLoop]: 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] [2021-11-21 01:40:51,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-21 01:40:51,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:40:51,904 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:40:51,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:40:51,904 INFO L85 PathProgramCache]: Analyzing trace with hash 714531849, now seen corresponding path program 1 times [2021-11-21 01:40:51,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:40:51,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [155241934] [2021-11-21 01:40:51,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:40:51,905 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:40:51,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:40:51,906 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:40:51,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-21 01:40:52,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:40:52,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:40:52,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:40:52,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:40:52,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:40:52,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:40:52,615 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:40:52,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [155241934] [2021-11-21 01:40:52,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [155241934] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:40:52,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1605752300] [2021-11-21 01:40:52,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:40:52,616 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:40:52,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:40:52,619 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:40:52,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-21 01:40:52,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:40:52,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:40:52,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:40:53,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 01:40:53,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:40:54,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 01:40:54,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1605752300] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:40:54,505 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-21 01:40:54,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [4, 4] total 13 [2021-11-21 01:40:54,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206102811] [2021-11-21 01:40:54,506 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:40:54,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-21 01:40:54,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:40:54,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-21 01:40:54,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-11-21 01:40:54,507 INFO L87 Difference]: Start difference. First operand 132 states and 192 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2021-11-21 01:40:55,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:40:55,345 INFO L93 Difference]: Finished difference Result 209 states and 304 transitions. [2021-11-21 01:40:55,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 01:40:55,346 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 33 [2021-11-21 01:40:55,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:40:55,348 INFO L225 Difference]: With dead ends: 209 [2021-11-21 01:40:55,348 INFO L226 Difference]: Without dead ends: 157 [2021-11-21 01:40:55,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 117 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:40:55,350 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 57 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:40:55,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 195 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 45 Invalid, 0 Unknown, 49 Unchecked, 0.4s Time] [2021-11-21 01:40:55,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-11-21 01:40:55,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 126. [2021-11-21 01:40:55,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.448) internal successors, (181), 125 states have internal predecessors, (181), 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) [2021-11-21 01:40:55,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 181 transitions. [2021-11-21 01:40:55,366 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 181 transitions. Word has length 33 [2021-11-21 01:40:55,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:40:55,366 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 181 transitions. [2021-11-21 01:40:55,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2021-11-21 01:40:55,367 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 181 transitions. [2021-11-21 01:40:55,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-21 01:40:55,369 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:40:55,369 INFO L514 BasicCegarLoop]: 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] [2021-11-21 01:40:55,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-21 01:40:55,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-21 01:40:55,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:40:55,780 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:40:55,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:40:55,780 INFO L85 PathProgramCache]: Analyzing trace with hash -2071939666, now seen corresponding path program 1 times [2021-11-21 01:40:55,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:40:55,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [19193908] [2021-11-21 01:40:55,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:40:55,781 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:40:55,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:40:55,781 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:40:55,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-21 01:40:55,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:40:55,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-21 01:40:55,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:40:57,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:40:57,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:40:58,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:40:58,255 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:40:58,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [19193908] [2021-11-21 01:40:58,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [19193908] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:40:58,255 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:40:58,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 5] imperfect sequences [] total 14 [2021-11-21 01:40:58,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822459666] [2021-11-21 01:40:58,256 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:40:58,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 01:40:58,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:40:58,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 01:40:58,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:40:58,257 INFO L87 Difference]: Start difference. First operand 126 states and 181 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 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) [2021-11-21 01:40:58,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:40:58,916 INFO L93 Difference]: Finished difference Result 258 states and 363 transitions. [2021-11-21 01:40:58,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-21 01:40:58,917 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 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 33 [2021-11-21 01:40:58,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:40:58,919 INFO L225 Difference]: With dead ends: 258 [2021-11-21 01:40:58,919 INFO L226 Difference]: Without dead ends: 223 [2021-11-21 01:40:58,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-11-21 01:40:58,920 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 109 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 312 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:40:58,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 734 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 312 Unchecked, 0.4s Time] [2021-11-21 01:40:58,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-11-21 01:40:58,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 134. [2021-11-21 01:40:58,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 1.443609022556391) internal successors, (192), 133 states have internal predecessors, (192), 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) [2021-11-21 01:40:58,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 192 transitions. [2021-11-21 01:40:58,934 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 192 transitions. Word has length 33 [2021-11-21 01:40:58,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:40:58,934 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 192 transitions. [2021-11-21 01:40:58,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 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) [2021-11-21 01:40:58,935 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 192 transitions. [2021-11-21 01:40:58,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-21 01:40:58,935 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:40:58,936 INFO L514 BasicCegarLoop]: 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] [2021-11-21 01:40:58,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-21 01:40:59,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:40:59,151 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:40:59,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:40:59,152 INFO L85 PathProgramCache]: Analyzing trace with hash -2014681364, now seen corresponding path program 1 times [2021-11-21 01:40:59,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:40:59,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1144604447] [2021-11-21 01:40:59,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:40:59,152 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:40:59,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:40:59,154 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:40:59,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-21 01:40:59,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:40:59,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-21 01:40:59,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:41:03,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:41:03,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:41:06,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:41:06,449 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:41:06,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1144604447] [2021-11-21 01:41:06,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1144604447] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:41:06,449 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:41:06,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 9] imperfect sequences [] total 18 [2021-11-21 01:41:06,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944442848] [2021-11-21 01:41:06,450 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:41:06,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-21 01:41:06,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:41:06,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-21 01:41:06,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-11-21 01:41:06,452 INFO L87 Difference]: Start difference. First operand 134 states and 192 transitions. Second operand has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 states have internal predecessors, (55), 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) [2021-11-21 01:41:06,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:41:06,466 INFO L93 Difference]: Finished difference Result 148 states and 210 transitions. [2021-11-21 01:41:06,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 01:41:06,467 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 states have internal predecessors, (55), 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 33 [2021-11-21 01:41:06,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:41:06,468 INFO L225 Difference]: With dead ends: 148 [2021-11-21 01:41:06,468 INFO L226 Difference]: Without dead ends: 139 [2021-11-21 01:41:06,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-11-21 01:41:06,470 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 7 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 158 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:41:06,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 382 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 158 Unchecked, 0.0s Time] [2021-11-21 01:41:06,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-11-21 01:41:06,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 138. [2021-11-21 01:41:06,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 1.4525547445255473) internal successors, (199), 137 states have internal predecessors, (199), 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) [2021-11-21 01:41:06,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 199 transitions. [2021-11-21 01:41:06,483 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 199 transitions. Word has length 33 [2021-11-21 01:41:06,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:41:06,484 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 199 transitions. [2021-11-21 01:41:06,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 states have internal predecessors, (55), 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) [2021-11-21 01:41:06,484 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 199 transitions. [2021-11-21 01:41:06,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-21 01:41:06,485 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:41:06,485 INFO L514 BasicCegarLoop]: 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] [2021-11-21 01:41:06,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-21 01:41:06,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:41:06,697 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:41:06,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:41:06,697 INFO L85 PathProgramCache]: Analyzing trace with hash -296932304, now seen corresponding path program 1 times [2021-11-21 01:41:06,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:41:06,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [7316296] [2021-11-21 01:41:06,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:41:06,698 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:41:06,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:41:06,699 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:41:06,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-21 01:41:06,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:41:06,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-21 01:41:06,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:41:16,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:41:16,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:41:23,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:41:23,419 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:41:23,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [7316296] [2021-11-21 01:41:23,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [7316296] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:41:23,419 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:41:23,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20, 13] imperfect sequences [] total 31 [2021-11-21 01:41:23,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888616136] [2021-11-21 01:41:23,420 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:41:23,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-21 01:41:23,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:41:23,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-21 01:41:23,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=762, Unknown=0, NotChecked=0, Total=930 [2021-11-21 01:41:23,422 INFO L87 Difference]: Start difference. First operand 138 states and 199 transitions. Second operand has 31 states, 31 states have (on average 1.967741935483871) internal successors, (61), 31 states have internal predecessors, (61), 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) [2021-11-21 01:41:33,088 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:33,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:41:33,152 INFO L93 Difference]: Finished difference Result 204 states and 285 transitions. [2021-11-21 01:41:33,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-21 01:41:33,153 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.967741935483871) internal successors, (61), 31 states have internal predecessors, (61), 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 33 [2021-11-21 01:41:33,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:41:33,155 INFO L225 Difference]: With dead ends: 204 [2021-11-21 01:41:33,155 INFO L226 Difference]: Without dead ends: 195 [2021-11-21 01:41:33,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=217, Invalid=1043, Unknown=0, NotChecked=0, Total=1260 [2021-11-21 01:41:33,157 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 84 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 302 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:41:33,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 810 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 322 Invalid, 1 Unknown, 302 Unchecked, 6.5s Time] [2021-11-21 01:41:33,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-11-21 01:41:33,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 137. [2021-11-21 01:41:33,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.4485294117647058) internal successors, (197), 136 states have internal predecessors, (197), 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) [2021-11-21 01:41:33,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 197 transitions. [2021-11-21 01:41:33,173 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 197 transitions. Word has length 33 [2021-11-21 01:41:33,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:41:33,174 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 197 transitions. [2021-11-21 01:41:33,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.967741935483871) internal successors, (61), 31 states have internal predecessors, (61), 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) [2021-11-21 01:41:33,174 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 197 transitions. [2021-11-21 01:41:33,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-21 01:41:33,175 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:41:33,175 INFO L514 BasicCegarLoop]: 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] [2021-11-21 01:41:33,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-21 01:41:33,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:41:33,387 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:41:33,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:41:33,387 INFO L85 PathProgramCache]: Analyzing trace with hash 161858632, now seen corresponding path program 1 times [2021-11-21 01:41:33,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:41:33,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1257392294] [2021-11-21 01:41:33,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:41:33,388 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:41:33,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:41:33,389 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:41:33,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-21 01:41:33,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:41:33,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-21 01:41:33,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:41:35,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:41:35,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:41:36,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:41:36,881 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:41:36,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1257392294] [2021-11-21 01:41:36,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1257392294] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-21 01:41:36,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:41:36,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2021-11-21 01:41:36,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314623692] [2021-11-21 01:41:36,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:41:36,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 01:41:36,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:41:36,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 01:41:36,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:41:36,883 INFO L87 Difference]: Start difference. First operand 137 states and 197 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 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) [2021-11-21 01:41:38,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:41:38,293 INFO L93 Difference]: Finished difference Result 222 states and 307 transitions. [2021-11-21 01:41:38,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 01:41:38,294 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 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 34 [2021-11-21 01:41:38,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:41:38,295 INFO L225 Difference]: With dead ends: 222 [2021-11-21 01:41:38,295 INFO L226 Difference]: Without dead ends: 179 [2021-11-21 01:41:38,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2021-11-21 01:41:38,296 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 116 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:41:38,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 398 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 127 Invalid, 0 Unknown, 48 Unchecked, 1.0s Time] [2021-11-21 01:41:38,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-11-21 01:41:38,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 121. [2021-11-21 01:41:38,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.4083333333333334) internal successors, (169), 120 states have internal predecessors, (169), 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) [2021-11-21 01:41:38,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 169 transitions. [2021-11-21 01:41:38,309 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 169 transitions. Word has length 34 [2021-11-21 01:41:38,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:41:38,310 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 169 transitions. [2021-11-21 01:41:38,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 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) [2021-11-21 01:41:38,310 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 169 transitions. [2021-11-21 01:41:38,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-21 01:41:38,311 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:41:38,311 INFO L514 BasicCegarLoop]: 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] [2021-11-21 01:41:38,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-21 01:41:38,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:41:38,525 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:41:38,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:41:38,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1761290204, now seen corresponding path program 1 times [2021-11-21 01:41:38,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:41:38,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1035421588] [2021-11-21 01:41:38,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:41:38,526 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:41:38,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:41:38,528 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:41:38,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-21 01:41:38,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:41:38,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-21 01:41:38,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:41:40,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:41:40,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:41:40,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 01:41:40,662 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:41:40,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1035421588] [2021-11-21 01:41:40,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1035421588] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-21 01:41:40,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:41:40,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2021-11-21 01:41:40,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095858128] [2021-11-21 01:41:40,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:41:40,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:41:40,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:41:40,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:41:40,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-21 01:41:40,664 INFO L87 Difference]: Start difference. First operand 121 states and 169 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2021-11-21 01:41:40,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:41:40,673 INFO L93 Difference]: Finished difference Result 145 states and 202 transitions. [2021-11-21 01:41:40,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:41:40,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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 34 [2021-11-21 01:41:40,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:41:40,675 INFO L225 Difference]: With dead ends: 145 [2021-11-21 01:41:40,675 INFO L226 Difference]: Without dead ends: 136 [2021-11-21 01:41:40,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-21 01:41:40,676 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 7 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:41:40,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 111 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 30 Unchecked, 0.0s Time] [2021-11-21 01:41:40,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-11-21 01:41:40,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 127. [2021-11-21 01:41:40,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.4126984126984128) internal successors, (178), 126 states have internal predecessors, (178), 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) [2021-11-21 01:41:40,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 178 transitions. [2021-11-21 01:41:40,687 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 178 transitions. Word has length 34 [2021-11-21 01:41:40,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:41:40,688 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 178 transitions. [2021-11-21 01:41:40,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2021-11-21 01:41:40,688 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 178 transitions. [2021-11-21 01:41:40,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-21 01:41:40,688 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:41:40,688 INFO L514 BasicCegarLoop]: 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] [2021-11-21 01:41:40,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-21 01:41:40,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:41:40,891 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:41:40,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:41:40,891 INFO L85 PathProgramCache]: Analyzing trace with hash 13717158, now seen corresponding path program 1 times [2021-11-21 01:41:40,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:41:40,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1377657614] [2021-11-21 01:41:40,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:41:40,892 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:41:40,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:41:40,893 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:41:40,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-21 01:41:40,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:41:40,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-21 01:41:40,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:41:41,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 27 [2021-11-21 01:41:46,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:41:46,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:41:55,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 65 [2021-11-21 01:41:56,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:41:56,817 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:41:56,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1377657614] [2021-11-21 01:41:56,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1377657614] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:41:56,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1632559294] [2021-11-21 01:41:56,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:41:56,818 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:41:56,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:41:56,820 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:41:56,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-11-21 01:41:57,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:41:57,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-21 01:41:57,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:41:57,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2021-11-21 01:42:00,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 01:42:00,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:42:16,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 73 [2021-11-21 01:42:18,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:42:18,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1632559294] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-21 01:42:18,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:42:18,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15, 14, 19] total 49 [2021-11-21 01:42:18,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059171469] [2021-11-21 01:42:18,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:42:18,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-21 01:42:18,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:42:18,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-21 01:42:18,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=2057, Unknown=0, NotChecked=0, Total=2352 [2021-11-21 01:42:18,843 INFO L87 Difference]: Start difference. First operand 127 states and 178 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 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) [2021-11-21 01:42:20,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:42:20,063 INFO L93 Difference]: Finished difference Result 127 states and 178 transitions. [2021-11-21 01:42:20,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 01:42:20,063 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 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 34 [2021-11-21 01:42:20,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:42:20,064 INFO L225 Difference]: With dead ends: 127 [2021-11-21 01:42:20,064 INFO L226 Difference]: Without dead ends: 0 [2021-11-21 01:42:20,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 872 ImplicationChecksByTransitivity, 29.8s TimeCoverageRelationStatistics Valid=333, Invalid=2319, Unknown=0, NotChecked=0, Total=2652 [2021-11-21 01:42:20,067 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 12 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:42:20,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 15 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 12 Unchecked, 0.0s Time] [2021-11-21 01:42:20,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-21 01:42:20,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-21 01:42:20,068 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) [2021-11-21 01:42:20,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-21 01:42:20,069 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2021-11-21 01:42:20,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:42:20,069 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-21 01:42:20,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 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) [2021-11-21 01:42:20,070 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-21 01:42:20,070 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-21 01:42:20,072 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-21 01:42:20,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-21 01:42:20,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2021-11-21 01:42:20,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt [2021-11-21 01:42:20,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-21 01:42:21,479 INFO L858 garLoopResultBuilder]: For program point L35-2(lines 35 40) no Hoare annotation was computed. [2021-11-21 01:42:21,479 INFO L854 garLoopResultBuilder]: At program point L68-3(lines 68 69) the Hoare annotation is: false [2021-11-21 01:42:21,479 INFO L858 garLoopResultBuilder]: For program point L168-1(lines 168 172) no Hoare annotation was computed. [2021-11-21 01:42:21,479 INFO L854 garLoopResultBuilder]: At program point L168-2(lines 168 172) the Hoare annotation is: (and (= |ULTIMATE.start_fmod_double_~x#1| (_ +zero 11 53)) |ULTIMATE.start_main_#t~short18#1| (= |ULTIMATE.start_main_~res~0#1| (_ +zero 11 53)) (= (_ +zero 11 53) |ULTIMATE.start_fmod_double_#res#1|) (= (_ +zero 11 53) |ULTIMATE.start_main_~x~0#1|) (= (_ +zero 11 53) |ULTIMATE.start___signbit_double_~x#1|)) [2021-11-21 01:42:21,480 INFO L858 garLoopResultBuilder]: For program point L168-3(lines 168 172) no Hoare annotation was computed. [2021-11-21 01:42:21,480 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-21 01:42:21,480 INFO L858 garLoopResultBuilder]: For program point L136-1(lines 136 141) no Hoare annotation was computed. [2021-11-21 01:42:21,480 INFO L858 garLoopResultBuilder]: For program point L103-1(lines 103 117) no Hoare annotation was computed. [2021-11-21 01:42:21,480 INFO L854 garLoopResultBuilder]: At program point L136-2(lines 136 141) the Hoare annotation is: false [2021-11-21 01:42:21,480 INFO L858 garLoopResultBuilder]: For program point L103-3(lines 103 117) no Hoare annotation was computed. [2021-11-21 01:42:21,480 INFO L858 garLoopResultBuilder]: For program point L120(lines 120 121) no Hoare annotation was computed. [2021-11-21 01:42:21,480 INFO L858 garLoopResultBuilder]: For program point L120-2(lines 25 163) no Hoare annotation was computed. [2021-11-21 01:42:21,480 INFO L858 garLoopResultBuilder]: For program point L71-2(lines 71 72) no Hoare annotation was computed. [2021-11-21 01:42:21,480 INFO L854 garLoopResultBuilder]: At program point L71-3(lines 71 72) the Hoare annotation is: false [2021-11-21 01:42:21,481 INFO L858 garLoopResultBuilder]: For program point L187(lines 187 196) no Hoare annotation was computed. [2021-11-21 01:42:21,481 INFO L858 garLoopResultBuilder]: For program point L154(lines 154 159) no Hoare annotation was computed. [2021-11-21 01:42:21,481 INFO L858 garLoopResultBuilder]: For program point L154-1(lines 142 161) no Hoare annotation was computed. [2021-11-21 01:42:21,481 INFO L858 garLoopResultBuilder]: For program point L187-2(lines 187 196) no Hoare annotation was computed. [2021-11-21 01:42:21,481 INFO L858 garLoopResultBuilder]: For program point L154-2(lines 154 159) no Hoare annotation was computed. [2021-11-21 01:42:21,481 INFO L858 garLoopResultBuilder]: For program point L55(lines 25 163) no Hoare annotation was computed. [2021-11-21 01:42:21,481 INFO L858 garLoopResultBuilder]: For program point L122-1(lines 25 163) no Hoare annotation was computed. [2021-11-21 01:42:21,482 INFO L858 garLoopResultBuilder]: For program point L56(lines 56 62) no Hoare annotation was computed. [2021-11-21 01:42:21,482 INFO L858 garLoopResultBuilder]: For program point L106(lines 106 107) no Hoare annotation was computed. [2021-11-21 01:42:21,482 INFO L858 garLoopResultBuilder]: For program point L106-2(lines 103 117) no Hoare annotation was computed. [2021-11-21 01:42:21,482 INFO L858 garLoopResultBuilder]: For program point L57-2(lines 57 58) no Hoare annotation was computed. [2021-11-21 01:42:21,482 INFO L854 garLoopResultBuilder]: At program point L57-3(lines 57 58) the Hoare annotation is: false [2021-11-21 01:42:21,482 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-21 01:42:21,482 INFO L854 garLoopResultBuilder]: At program point L174(lines 165 175) the Hoare annotation is: (and |ULTIMATE.start_main_#t~short18#1| (= (_ bv0 32) |ULTIMATE.start___signbit_double_#res#1|) (= (_ +zero 11 53) |ULTIMATE.start_main_~x~0#1|)) [2021-11-21 01:42:21,483 INFO L854 garLoopResultBuilder]: At program point L108-1(lines 103 117) the Hoare annotation is: false [2021-11-21 01:42:21,483 INFO L858 garLoopResultBuilder]: For program point L192(line 192) no Hoare annotation was computed. [2021-11-21 01:42:21,483 INFO L858 garLoopResultBuilder]: For program point L192-2(lines 192 195) no Hoare annotation was computed. [2021-11-21 01:42:21,483 INFO L858 garLoopResultBuilder]: For program point L93(lines 93 99) no Hoare annotation was computed. [2021-11-21 01:42:21,483 INFO L858 garLoopResultBuilder]: For program point L93-2(lines 89 100) no Hoare annotation was computed. [2021-11-21 01:42:21,483 INFO L858 garLoopResultBuilder]: For program point L60-2(lines 60 61) no Hoare annotation was computed. [2021-11-21 01:42:21,483 INFO L854 garLoopResultBuilder]: At program point L60-3(lines 60 61) the Hoare annotation is: false [2021-11-21 01:42:21,483 INFO L858 garLoopResultBuilder]: For program point L193(line 193) no Hoare annotation was computed. [2021-11-21 01:42:21,484 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-21 01:42:21,484 INFO L858 garLoopResultBuilder]: For program point L144(lines 144 153) no Hoare annotation was computed. [2021-11-21 01:42:21,484 INFO L858 garLoopResultBuilder]: For program point L45(lines 45 47) no Hoare annotation was computed. [2021-11-21 01:42:21,484 INFO L858 garLoopResultBuilder]: For program point L29-1(lines 29 34) no Hoare annotation was computed. [2021-11-21 01:42:21,484 INFO L854 garLoopResultBuilder]: At program point L29-2(lines 29 34) the Hoare annotation is: (and (= |ULTIMATE.start_fmod_double_~x#1| (_ +zero 11 53)) (or (fp.gt |ULTIMATE.start_fmod_double_~y#1| (_ +zero 11 53)) (fp.lt |ULTIMATE.start_fmod_double_~y#1| (_ +zero 11 53))) (= (_ +zero 11 53) |ULTIMATE.start_main_~x~0#1|)) [2021-11-21 01:42:21,485 INFO L858 garLoopResultBuilder]: For program point L112(lines 112 113) no Hoare annotation was computed. [2021-11-21 01:42:21,485 INFO L854 garLoopResultBuilder]: At program point L162(lines 25 163) the Hoare annotation is: (and (= |ULTIMATE.start_fmod_double_~x#1| (_ +zero 11 53)) (= (_ +zero 11 53) |ULTIMATE.start_fmod_double_#res#1|) (= (_ +zero 11 53) |ULTIMATE.start_main_~x~0#1|)) [2021-11-21 01:42:21,485 INFO L854 garLoopResultBuilder]: At program point L129-2(lines 129 133) the Hoare annotation is: false [2021-11-21 01:42:21,485 INFO L858 garLoopResultBuilder]: For program point L129-3(lines 25 163) no Hoare annotation was computed. [2021-11-21 01:42:21,485 INFO L858 garLoopResultBuilder]: For program point L147(lines 147 153) no Hoare annotation was computed. [2021-11-21 01:42:21,486 INFO L858 garLoopResultBuilder]: For program point L81(lines 81 87) no Hoare annotation was computed. [2021-11-21 01:42:21,486 INFO L858 garLoopResultBuilder]: For program point L48(lines 48 53) no Hoare annotation was computed. [2021-11-21 01:42:21,486 INFO L858 garLoopResultBuilder]: For program point L81-2(lines 25 163) no Hoare annotation was computed. [2021-11-21 01:42:21,486 INFO L858 garLoopResultBuilder]: For program point L48-2(lines 25 163) no Hoare annotation was computed. [2021-11-21 01:42:21,486 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-21 01:42:21,487 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 193) no Hoare annotation was computed. [2021-11-21 01:42:21,487 INFO L858 garLoopResultBuilder]: For program point L49(lines 49 50) no Hoare annotation was computed. [2021-11-21 01:42:21,487 INFO L861 garLoopResultBuilder]: At program point L198(lines 177 199) the Hoare annotation is: true [2021-11-21 01:42:21,487 INFO L858 garLoopResultBuilder]: For program point L66(lines 25 163) no Hoare annotation was computed. [2021-11-21 01:42:21,487 INFO L858 garLoopResultBuilder]: For program point L67(lines 67 73) no Hoare annotation was computed. [2021-11-21 01:42:21,488 INFO L858 garLoopResultBuilder]: For program point L51(lines 51 52) no Hoare annotation was computed. [2021-11-21 01:42:21,488 INFO L858 garLoopResultBuilder]: For program point L134(lines 134 161) no Hoare annotation was computed. [2021-11-21 01:42:21,488 INFO L858 garLoopResultBuilder]: For program point L35(lines 35 40) no Hoare annotation was computed. [2021-11-21 01:42:21,488 INFO L858 garLoopResultBuilder]: For program point L35-1(lines 25 163) no Hoare annotation was computed. [2021-11-21 01:42:21,488 INFO L858 garLoopResultBuilder]: For program point L68-2(lines 68 69) no Hoare annotation was computed. [2021-11-21 01:42:21,491 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:42:21,492 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 01:42:21,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 01:42:21 BoogieIcfgContainer [2021-11-21 01:42:21,506 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 01:42:21,507 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 01:42:21,507 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 01:42:21,507 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 01:42:21,508 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:40:03" (3/4) ... [2021-11-21 01:42:21,511 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-21 01:42:21,525 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-11-21 01:42:21,526 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-11-21 01:42:21,526 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-21 01:42:21,526 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-21 01:42:21,559 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/witness.graphml [2021-11-21 01:42:21,559 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 01:42:21,560 INFO L158 Benchmark]: Toolchain (without parser) took 142825.82ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 48.3MB in the beginning and 47.9MB in the end (delta: 375.2kB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. [2021-11-21 01:42:21,561 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 83.9MB. Free memory was 64.9MB in the beginning and 64.9MB in the end (delta: 72.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:42:21,561 INFO L158 Benchmark]: CACSL2BoogieTranslator took 485.08ms. Allocated memory is still 83.9MB. Free memory was 48.1MB in the beginning and 64.9MB in the end (delta: -16.8MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. [2021-11-21 01:42:21,561 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.49ms. Allocated memory is still 83.9MB. Free memory was 64.9MB in the beginning and 62.7MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:42:21,562 INFO L158 Benchmark]: Boogie Preprocessor took 85.23ms. Allocated memory is still 83.9MB. Free memory was 62.7MB in the beginning and 60.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:42:21,562 INFO L158 Benchmark]: RCFGBuilder took 3690.40ms. Allocated memory is still 83.9MB. Free memory was 60.3MB in the beginning and 41.7MB in the end (delta: 18.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-11-21 01:42:21,563 INFO L158 Benchmark]: TraceAbstraction took 138427.80ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 41.2MB in the beginning and 51.1MB in the end (delta: -9.9MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. [2021-11-21 01:42:21,563 INFO L158 Benchmark]: Witness Printer took 52.73ms. Allocated memory is still 100.7MB. Free memory was 51.1MB in the beginning and 47.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-21 01:42:21,565 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 83.9MB. Free memory was 64.9MB in the beginning and 64.9MB in the end (delta: 72.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 485.08ms. Allocated memory is still 83.9MB. Free memory was 48.1MB in the beginning and 64.9MB in the end (delta: -16.8MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.49ms. Allocated memory is still 83.9MB. Free memory was 64.9MB in the beginning and 62.7MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 85.23ms. Allocated memory is still 83.9MB. Free memory was 62.7MB in the beginning and 60.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 3690.40ms. Allocated memory is still 83.9MB. Free memory was 60.3MB in the beginning and 41.7MB in the end (delta: 18.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 138427.80ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 41.2MB in the beginning and 51.1MB in the end (delta: -9.9MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. * Witness Printer took 52.73ms. Allocated memory is still 100.7MB. Free memory was 51.1MB in the beginning and 47.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. 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: 193]: 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, 61 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 138.3s, OverallIterations: 21, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 28.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 1712 SdHoareTripleChecker+Valid, 18.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1712 mSDsluCounter, 7710 SdHoareTripleChecker+Invalid, 17.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1252 IncrementalHoareTripleChecker+Unchecked, 6161 mSDsCounter, 84 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1100 IncrementalHoareTripleChecker+Invalid, 2439 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 84 mSolverCounterUnsat, 1549 mSDtfsCounter, 1100 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1276 GetRequests, 992 SyntacticMatches, 9 SemanticMatches, 275 ConstructedPredicates, 0 IntricatePredicates, 4 DeprecatedPredicates, 1554 ImplicationChecksByTransitivity, 70.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=138occurred in iteration=17, InterpolantAutomatonStates: 173, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 21 MinimizatonAttempts, 583 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 12 PreInvPairs, 17 NumberOfFragments, 57 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 106 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 4.0s SatisfiabilityAnalysisTime, 99.1s InterpolantComputationTime, 636 NumberOfCodeBlocks, 636 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 1226 ConstructedInterpolants, 274 QuantifiedInterpolants, 10131 SizeOfPredicates, 163 NumberOfNonLiveVariables, 2040 ConjunctsInSsa, 239 ConjunctsInUnsatCore, 46 InterpolantComputations, 39 PerfectInterpolantSequences, 5/12 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: 165]: Loop Invariant Derived loop invariant: (aux-res == 0.0 && __signbit_double(res) == 0-aux && 0bv32 == \result) && ~Pluszero~LONGDOUBLE() == x - InvariantResult [Line: 129]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 177]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 71]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 136]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 103]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 60]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (x == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x - InvariantResult [Line: 68]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: (x == ~Pluszero~LONGDOUBLE() && (~fp.gt~DOUBLE(y, ~Pluszero~LONGDOUBLE()) || ~fp.lt~DOUBLE(y, ~Pluszero~LONGDOUBLE()))) && ~Pluszero~LONGDOUBLE() == x - InvariantResult [Line: 168]: Loop Invariant Derived loop invariant: ((((x == ~Pluszero~LONGDOUBLE() && aux-res == 0.0 && __signbit_double(res) == 0-aux) && res == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == x RESULT: Ultimate proved your program to be correct! [2021-11-21 01:42:21,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2514c8fc-994d-4eaa-837c-3ae12397ce8b/bin/utaipan-TEXQjIfE4P/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