./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0684b.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_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/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_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0684b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/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_2c9d051e-8541-467c-a1bc-a50c299ae76e/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 59d0560b101a1a446649456c356a26c615f3850e7b7d16baa2e50b6bf6dee850 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:43:23,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:43:23,313 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:43:23,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:43:23,385 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:43:23,387 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:43:23,390 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:43:23,393 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:43:23,396 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:43:23,397 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:43:23,399 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:43:23,400 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:43:23,401 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:43:23,403 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:43:23,405 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:43:23,407 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:43:23,409 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:43:23,411 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:43:23,414 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:43:23,417 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:43:23,420 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:43:23,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:43:23,430 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:43:23,439 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:43:23,444 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:43:23,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:43:23,445 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:43:23,458 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:43:23,458 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:43:23,460 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:43:23,461 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:43:23,462 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:43:23,463 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:43:23,464 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:43:23,466 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:43:23,467 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:43:23,468 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:43:23,471 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:43:23,472 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:43:23,473 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:43:23,476 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:43:23,477 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-20 23:43:23,525 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:43:23,529 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:43:23,530 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:43:23,530 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:43:23,532 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:43:23,532 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:43:23,533 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:43:23,533 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:43:23,533 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:43:23,534 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:43:23,535 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:43:23,536 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:43:23,536 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:43:23,536 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:43:23,536 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:43:23,537 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:43:23,537 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:43:23,537 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:43:23,538 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:43:23,539 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 23:43:23,539 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:43:23,539 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 23:43:23,539 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:43:23,540 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:43:23,540 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:43:23,540 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:43:23,546 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 23:43:23,547 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:43:23,547 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:43:23,547 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:43:23,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:43:23,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:43:23,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:43:23,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:43:23,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:43:23,549 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:43:23,550 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:43:23,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:43:23,550 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:43:23,551 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:43:23,551 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:43:23,551 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_2c9d051e-8541-467c-a1bc-a50c299ae76e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 59d0560b101a1a446649456c356a26c615f3850e7b7d16baa2e50b6bf6dee850 [2021-11-20 23:43:23,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:43:23,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:43:23,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:43:23,893 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:43:23,894 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:43:23,896 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/float-newlib/double_req_bl_0684b.c [2021-11-20 23:43:24,013 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/data/a0c767561/fc089d6ebed543419602958285f3c7a0/FLAG765ab4d5d [2021-11-20 23:43:24,629 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:43:24,630 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/sv-benchmarks/c/float-newlib/double_req_bl_0684b.c [2021-11-20 23:43:24,649 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/data/a0c767561/fc089d6ebed543419602958285f3c7a0/FLAG765ab4d5d [2021-11-20 23:43:24,906 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/data/a0c767561/fc089d6ebed543419602958285f3c7a0 [2021-11-20 23:43:24,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:43:24,916 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:43:24,920 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:43:24,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:43:24,927 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:43:24,928 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:43:24" (1/1) ... [2021-11-20 23:43:24,931 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e3df174 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:24, skipping insertion in model container [2021-11-20 23:43:24,932 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:43:24" (1/1) ... [2021-11-20 23:43:24,946 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:43:24,994 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:43:25,307 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_2c9d051e-8541-467c-a1bc-a50c299ae76e/sv-benchmarks/c/float-newlib/double_req_bl_0684b.c[6891,6904] [2021-11-20 23:43:25,319 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:43:25,332 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:43:25,404 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_2c9d051e-8541-467c-a1bc-a50c299ae76e/sv-benchmarks/c/float-newlib/double_req_bl_0684b.c[6891,6904] [2021-11-20 23:43:25,405 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:43:25,427 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:43:25,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:25 WrapperNode [2021-11-20 23:43:25,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:43:25,430 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:43:25,430 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:43:25,430 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:43:25,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:25" (1/1) ... [2021-11-20 23:43:25,458 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:25" (1/1) ... [2021-11-20 23:43:25,502 INFO L137 Inliner]: procedures = 21, calls = 98, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 277 [2021-11-20 23:43:25,503 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:43:25,504 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:43:25,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:43:25,505 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:43:25,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:25" (1/1) ... [2021-11-20 23:43:25,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:25" (1/1) ... [2021-11-20 23:43:25,524 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:25" (1/1) ... [2021-11-20 23:43:25,525 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:25" (1/1) ... [2021-11-20 23:43:25,546 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:25" (1/1) ... [2021-11-20 23:43:25,556 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:25" (1/1) ... [2021-11-20 23:43:25,575 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:25" (1/1) ... [2021-11-20 23:43:25,582 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:43:25,583 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:43:25,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:43:25,583 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:43:25,585 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:25" (1/1) ... [2021-11-20 23:43:25,620 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:43:25,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:43:25,676 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:43:25,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:43:25,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:43:25,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:43:25,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:43:25,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-20 23:43:25,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 23:43:25,743 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2021-11-20 23:43:25,743 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2021-11-20 23:43:25,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-20 23:43:25,744 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2021-11-20 23:43:25,744 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2021-11-20 23:43:25,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:43:25,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:43:25,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 23:43:25,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-11-20 23:43:25,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:43:25,919 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:43:25,921 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:43:26,524 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:43:26,643 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:43:26,644 INFO L301 CfgBuilder]: Removed 20 assume(true) statements. [2021-11-20 23:43:26,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:43:26 BoogieIcfgContainer [2021-11-20 23:43:26,647 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:43:26,650 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:43:26,650 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:43:26,655 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:43:26,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:43:24" (1/3) ... [2021-11-20 23:43:26,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c6f235d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:43:26, skipping insertion in model container [2021-11-20 23:43:26,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:25" (2/3) ... [2021-11-20 23:43:26,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c6f235d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:43:26, skipping insertion in model container [2021-11-20 23:43:26,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:43:26" (3/3) ... [2021-11-20 23:43:26,659 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0684b.c [2021-11-20 23:43:26,665 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:43:26,666 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 23:43:26,742 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:43:26,759 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 [2021-11-20 23:43:26,760 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 23:43:26,818 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 71 states have (on average 1.704225352112676) internal successors, (121), 72 states have internal predecessors, (121), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 23:43:26,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-20 23:43:26,823 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:43:26,823 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:43:26,824 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:43:26,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:43:26,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1911382225, now seen corresponding path program 1 times [2021-11-20 23:43:26,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:43:26,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6777247] [2021-11-20 23:43:26,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:43:26,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:43:27,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:43:27,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:43:27,112 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:43:27,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6777247] [2021-11-20 23:43:27,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6777247] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:43:27,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:43:27,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 23:43:27,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435068244] [2021-11-20 23:43:27,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:43:27,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 23:43:27,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:43:27,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 23:43:27,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 23:43:27,180 INFO L87 Difference]: Start difference. First operand has 79 states, 71 states have (on average 1.704225352112676) internal successors, (121), 72 states have internal predecessors, (121), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2021-11-20 23:43:27,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:43:27,299 INFO L93 Difference]: Finished difference Result 157 states and 261 transitions. [2021-11-20 23:43:27,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 23:43:27,302 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 [2021-11-20 23:43:27,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:43:27,316 INFO L225 Difference]: With dead ends: 157 [2021-11-20 23:43:27,316 INFO L226 Difference]: Without dead ends: 76 [2021-11-20 23:43:27,323 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 [2021-11-20 23:43:27,329 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:43:27,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 93 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:43:27,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-11-20 23:43:27,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-11-20 23:43:27,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 69 states have (on average 1.391304347826087) internal successors, (96), 69 states have internal predecessors, (96), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 23:43:27,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 104 transitions. [2021-11-20 23:43:27,409 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 104 transitions. Word has length 13 [2021-11-20 23:43:27,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:43:27,410 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 104 transitions. [2021-11-20 23:43:27,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2021-11-20 23:43:27,411 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 104 transitions. [2021-11-20 23:43:27,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 23:43:27,413 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:43:27,414 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:43:27,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:43:27,416 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:43:27,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:43:27,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1503868387, now seen corresponding path program 1 times [2021-11-20 23:43:27,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:43:27,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242527102] [2021-11-20 23:43:27,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:43:27,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:43:27,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:43:27,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:43:27,607 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:43:27,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242527102] [2021-11-20 23:43:27,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242527102] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:43:27,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:43:27,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:43:27,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617698825] [2021-11-20 23:43:27,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:43:27,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:43:27,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:43:27,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:43:27,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:43:27,614 INFO L87 Difference]: Start difference. First operand 76 states and 104 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2021-11-20 23:43:27,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:43:27,725 INFO L93 Difference]: Finished difference Result 144 states and 199 transitions. [2021-11-20 23:43:27,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:43:27,727 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 [2021-11-20 23:43:27,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:43:27,730 INFO L225 Difference]: With dead ends: 144 [2021-11-20 23:43:27,731 INFO L226 Difference]: Without dead ends: 76 [2021-11-20 23:43:27,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:43:27,736 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 0 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:43:27,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 177 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:43:27,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-11-20 23:43:27,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-11-20 23:43:27,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 69 states have (on average 1.3768115942028984) internal successors, (95), 69 states have internal predecessors, (95), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 23:43:27,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 103 transitions. [2021-11-20 23:43:27,764 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 103 transitions. Word has length 16 [2021-11-20 23:43:27,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:43:27,765 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 103 transitions. [2021-11-20 23:43:27,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2021-11-20 23:43:27,766 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 103 transitions. [2021-11-20 23:43:27,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-20 23:43:27,768 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:43:27,768 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:43:27,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 23:43:27,768 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:43:27,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:43:27,769 INFO L85 PathProgramCache]: Analyzing trace with hash -995493661, now seen corresponding path program 1 times [2021-11-20 23:43:27,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:43:27,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639105135] [2021-11-20 23:43:27,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:43:27,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:43:28,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 23:43:28,021 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 23:43:28,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 23:43:28,268 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-20 23:43:28,268 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 23:43:28,270 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 23:43:28,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 23:43:28,281 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-20 23:43:28,285 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 23:43:28,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:43:28 BoogieIcfgContainer [2021-11-20 23:43:28,356 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 23:43:28,360 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 23:43:28,360 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 23:43:28,361 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 23:43:28,362 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:43:26" (3/4) ... [2021-11-20 23:43:28,365 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 23:43:28,366 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 23:43:28,367 INFO L158 Benchmark]: Toolchain (without parser) took 3450.33ms. Allocated memory was 90.2MB in the beginning and 123.7MB in the end (delta: 33.6MB). Free memory was 56.3MB in the beginning and 78.0MB in the end (delta: -21.6MB). Peak memory consumption was 11.5MB. Max. memory is 16.1GB. [2021-11-20 23:43:28,368 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 90.2MB. Free memory was 42.8MB in the beginning and 42.7MB in the end (delta: 41.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:43:28,369 INFO L158 Benchmark]: CACSL2BoogieTranslator took 508.81ms. Allocated memory was 90.2MB in the beginning and 123.7MB in the end (delta: 33.6MB). Free memory was 56.2MB in the beginning and 93.7MB in the end (delta: -37.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-20 23:43:28,370 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.74ms. Allocated memory is still 123.7MB. Free memory was 93.7MB in the beginning and 91.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 23:43:28,371 INFO L158 Benchmark]: Boogie Preprocessor took 78.03ms. Allocated memory is still 123.7MB. Free memory was 91.2MB in the beginning and 88.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-20 23:43:28,372 INFO L158 Benchmark]: RCFGBuilder took 1064.44ms. Allocated memory is still 123.7MB. Free memory was 88.1MB in the beginning and 97.7MB in the end (delta: -9.6MB). Peak memory consumption was 33.5MB. Max. memory is 16.1GB. [2021-11-20 23:43:28,372 INFO L158 Benchmark]: TraceAbstraction took 1706.33ms. Allocated memory is still 123.7MB. Free memory was 96.9MB in the beginning and 78.7MB in the end (delta: 18.2MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. [2021-11-20 23:43:28,373 INFO L158 Benchmark]: Witness Printer took 5.72ms. Allocated memory is still 123.7MB. Free memory was 78.7MB in the beginning and 78.0MB in the end (delta: 753.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 23:43:28,378 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 90.2MB. Free memory was 42.8MB in the beginning and 42.7MB in the end (delta: 41.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 508.81ms. Allocated memory was 90.2MB in the beginning and 123.7MB in the end (delta: 33.6MB). Free memory was 56.2MB in the beginning and 93.7MB in the end (delta: -37.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.74ms. Allocated memory is still 123.7MB. Free memory was 93.7MB in the beginning and 91.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 78.03ms. Allocated memory is still 123.7MB. Free memory was 91.2MB in the beginning and 88.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1064.44ms. Allocated memory is still 123.7MB. Free memory was 88.1MB in the beginning and 97.7MB in the end (delta: -9.6MB). Peak memory consumption was 33.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1706.33ms. Allocated memory is still 123.7MB. Free memory was 96.9MB in the beginning and 78.7MB in the end (delta: 18.2MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. * Witness Printer took 5.72ms. Allocated memory is still 123.7MB. Free memory was 78.7MB in the beginning and 78.0MB in the end (delta: 753.7kB). Peak memory consumption was 2.1MB. 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: 288]: 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 164, overapproximation of someUnaryDOUBLEoperation at line 54, overapproximation of someBinaryArithmeticDOUBLEoperation at line 165, overapproximation of bitwiseAnd at line 162, overapproximation of someBinaryDOUBLEComparisonOperation at line 287. Possible FailurePath: [L39-L44] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L46-L51] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L53-L60] static const double aT_atan[] = { 3.33333333333329318027e-01, -1.99999999998764832476e-01, 1.42857142725034663711e-01, -1.11111104054623557880e-01, 9.09088713343650656196e-02, -7.69187620504482999495e-02, 6.66107313738753120669e-02, -5.83357013379057348645e-02, 4.97687799461593236017e-02, -3.65315727442169155270e-02, 1.62858201153657823623e-02, }; [L62-L64] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01, pi_o_2 = 1.5707963267948965580E+00, pi = 3.1415926535897931160E+00, huge_atan = 1.0e300; [L141-L142] static const double tiny_atan2 = 1.0e-300, zero_atan2 = 0.0, pi_lo_atan2 = 1.2246467991473531772E-16; [L278] double x = __VERIFIER_nondet_double(); [L279] double y = -1.0 / 0.0; [L282] CALL, EXPR isfinite_double(x) [L262] __int32_t hx; VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003, zero_atan2=0] [L264] ieee_double_shape_type gh_u; [L265] gh_u.value = (x) [L266] EXPR gh_u.parts.msw [L266] (hx) = gh_u.parts.msw [L268] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L282] RET, EXPR isfinite_double(x) [L282] isfinite_double(x) && isinf_double(y) [L282] CALL, EXPR isinf_double(y) [L248] __int32_t hx, lx; VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, zero_atan2=0] [L250] ieee_double_shape_type ew_u; [L251] ew_u.value = (x) [L252] EXPR ew_u.parts.msw [L252] (hx) = ew_u.parts.msw [L253] EXPR ew_u.parts.lsw [L253] (lx) = ew_u.parts.lsw [L255] hx &= 0x7fffffff [L256] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L257] hx = 0x7ff00000 - hx [L258] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L282] RET, EXPR isinf_double(y) [L282] isfinite_double(x) && isinf_double(y) VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, isfinite_double(x)=-1, isfinite_double(x) && isinf_double(y)=1, isinf_double(y)=2147483647, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003, y=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, zero_atan2=0] [L282] COND TRUE isfinite_double(x) && isinf_double(y) [L284] CALL, EXPR __ieee754_atan2(y, x) [L145] double z; [L146] __int32_t k, m, hx, hy, ix, iy; [L147] __uint32_t lx, ly; VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003, \old(y)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003, y=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, zero_atan2=0] [L150] ieee_double_shape_type ew_u; [L151] ew_u.value = (x) [L152] EXPR ew_u.parts.msw [L152] (hx) = ew_u.parts.msw [L153] EXPR ew_u.parts.lsw [L153] (lx) = ew_u.parts.lsw [L155] ix = hx & 0x7fffffff VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003, \old(y)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, hx=-4, lx=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003, y=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, zero_atan2=0] [L157] ieee_double_shape_type ew_u; [L158] ew_u.value = (y) [L159] EXPR ew_u.parts.msw [L159] (hy) = ew_u.parts.msw [L160] EXPR ew_u.parts.lsw [L160] (ly) = ew_u.parts.lsw [L162] iy = hy & 0x7fffffff VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003, \old(y)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, hx=-4, hy=-1, lx=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, ly=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000005, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003, y=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, zero_atan2=0] [L163-L164] COND TRUE ((ix | ((lx | -lx) >> 31)) > 0x7ff00000) || ((iy | ((ly | -ly) >> 31)) > 0x7ff00000) [L165] return x + y; VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003, \old(y)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, hx=-4, hy=-1, lx=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, ly=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000005, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003, y=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, zero_atan2=0] [L284] RET, EXPR __ieee754_atan2(y, x) [L284] double res = __ieee754_atan2(y, x); [L287] COND TRUE res != -pi_o_2 VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, res=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003, y=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, zero_atan2=0] [L288] reach_error() VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, res=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003, y=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, zero_atan2=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.5s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, 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, 270 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 98 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 45 IncrementalHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 183 mSDtfsCounter, 45 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 28 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 [2021-11-20 23:43:28,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/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_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/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_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0684b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/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_2c9d051e-8541-467c-a1bc-a50c299ae76e/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 59d0560b101a1a446649456c356a26c615f3850e7b7d16baa2e50b6bf6dee850 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:43:31,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:43:31,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:43:31,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:43:31,567 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:43:31,573 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:43:31,575 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:43:31,581 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:43:31,586 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:43:31,596 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:43:31,598 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:43:31,600 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:43:31,601 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:43:31,604 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:43:31,607 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:43:31,612 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:43:31,615 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:43:31,616 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:43:31,619 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:43:31,631 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:43:31,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:43:31,636 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:43:31,640 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:43:31,642 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:43:31,653 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:43:31,654 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:43:31,655 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:43:31,657 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:43:31,658 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:43:31,660 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:43:31,660 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:43:31,662 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:43:31,665 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:43:31,666 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:43:31,668 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:43:31,668 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:43:31,670 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:43:31,670 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:43:31,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:43:31,673 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:43:31,674 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:43:31,681 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-20 23:43:31,736 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:43:31,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:43:31,737 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:43:31,738 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:43:31,739 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:43:31,739 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:43:31,740 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:43:31,740 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:43:31,740 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:43:31,741 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:43:31,742 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:43:31,743 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:43:31,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:43:31,745 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 23:43:31,745 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 23:43:31,746 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:43:31,746 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:43:31,746 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:43:31,747 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:43:31,747 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 23:43:31,747 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 23:43:31,747 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 23:43:31,748 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:43:31,748 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:43:31,748 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:43:31,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:43:31,749 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 23:43:31,749 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:43:31,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:43:31,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:43:31,750 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:43:31,751 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:43:31,751 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-20 23:43:31,752 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 23:43:31,752 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:43:31,752 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:43:31,753 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:43:31,753 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_2c9d051e-8541-467c-a1bc-a50c299ae76e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 59d0560b101a1a446649456c356a26c615f3850e7b7d16baa2e50b6bf6dee850 [2021-11-20 23:43:32,214 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:43:32,247 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:43:32,251 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:43:32,252 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:43:32,253 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:43:32,255 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/float-newlib/double_req_bl_0684b.c [2021-11-20 23:43:32,342 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/data/3d5774f43/357a0b63619c451e95f392d0850ec4dc/FLAG7199ffedb [2021-11-20 23:43:33,068 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:43:33,069 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/sv-benchmarks/c/float-newlib/double_req_bl_0684b.c [2021-11-20 23:43:33,080 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/data/3d5774f43/357a0b63619c451e95f392d0850ec4dc/FLAG7199ffedb [2021-11-20 23:43:33,384 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/data/3d5774f43/357a0b63619c451e95f392d0850ec4dc [2021-11-20 23:43:33,387 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:43:33,391 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:43:33,397 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:43:33,397 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:43:33,402 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:43:33,403 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:43:33" (1/1) ... [2021-11-20 23:43:33,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12bd85da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:33, skipping insertion in model container [2021-11-20 23:43:33,406 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:43:33" (1/1) ... [2021-11-20 23:43:33,415 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:43:33,476 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:43:33,920 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_2c9d051e-8541-467c-a1bc-a50c299ae76e/sv-benchmarks/c/float-newlib/double_req_bl_0684b.c[6891,6904] [2021-11-20 23:43:33,929 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:43:33,962 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:43:34,049 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_2c9d051e-8541-467c-a1bc-a50c299ae76e/sv-benchmarks/c/float-newlib/double_req_bl_0684b.c[6891,6904] [2021-11-20 23:43:34,050 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:43:34,077 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:43:34,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:34 WrapperNode [2021-11-20 23:43:34,078 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:43:34,079 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:43:34,079 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:43:34,080 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:43:34,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:34" (1/1) ... [2021-11-20 23:43:34,110 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:34" (1/1) ... [2021-11-20 23:43:34,159 INFO L137 Inliner]: procedures = 24, calls = 98, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 276 [2021-11-20 23:43:34,166 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:43:34,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:43:34,169 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:43:34,170 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:43:34,180 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:34" (1/1) ... [2021-11-20 23:43:34,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:34" (1/1) ... [2021-11-20 23:43:34,205 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:34" (1/1) ... [2021-11-20 23:43:34,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:34" (1/1) ... [2021-11-20 23:43:34,231 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:34" (1/1) ... [2021-11-20 23:43:34,241 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:34" (1/1) ... [2021-11-20 23:43:34,246 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:34" (1/1) ... [2021-11-20 23:43:34,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:43:34,255 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:43:34,255 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:43:34,255 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:43:34,256 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:34" (1/1) ... [2021-11-20 23:43:34,265 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:43:34,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:43:34,296 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:43:34,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:43:34,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:43:34,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-11-20 23:43:34,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-11-20 23:43:34,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-20 23:43:34,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:43:34,376 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2021-11-20 23:43:34,376 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2021-11-20 23:43:34,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2021-11-20 23:43:34,376 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2021-11-20 23:43:34,377 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2021-11-20 23:43:34,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-20 23:43:34,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:43:34,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:43:34,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-20 23:43:34,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:43:34,603 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:43:34,620 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:43:57,539 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:43:57,549 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:43:57,550 INFO L301 CfgBuilder]: Removed 20 assume(true) statements. [2021-11-20 23:43:57,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:43:57 BoogieIcfgContainer [2021-11-20 23:43:57,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:43:57,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:43:57,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:43:57,559 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:43:57,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:43:33" (1/3) ... [2021-11-20 23:43:57,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@342c9db6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:43:57, skipping insertion in model container [2021-11-20 23:43:57,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:34" (2/3) ... [2021-11-20 23:43:57,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@342c9db6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:43:57, skipping insertion in model container [2021-11-20 23:43:57,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:43:57" (3/3) ... [2021-11-20 23:43:57,563 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0684b.c [2021-11-20 23:43:57,571 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:43:57,571 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 23:43:57,632 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:43:57,641 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 [2021-11-20 23:43:57,641 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 23:43:57,665 INFO L276 IsEmpty]: Start isEmpty. Operand has 103 states, 95 states have (on average 1.6526315789473685) internal successors, (157), 96 states have internal predecessors, (157), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 23:43:57,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 23:43:57,671 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:43:57,672 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:43:57,673 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:43:57,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:43:57,679 INFO L85 PathProgramCache]: Analyzing trace with hash -233161701, now seen corresponding path program 1 times [2021-11-20 23:43:57,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:43:57,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1213025165] [2021-11-20 23:43:57,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:43:57,697 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:43:57,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:43:57,698 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:43:57,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 23:43:58,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:43:58,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-20 23:43:58,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:43:58,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:43:58,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:43:58,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:43:58,941 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:43:58,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1213025165] [2021-11-20 23:43:58,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1213025165] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:43:58,943 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:43:58,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 23:43:58,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873731424] [2021-11-20 23:43:58,946 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:43:58,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 23:43:58,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:43:59,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 23:43:59,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 23:43:59,010 INFO L87 Difference]: Start difference. First operand has 103 states, 95 states have (on average 1.6526315789473685) internal successors, (157), 96 states have internal predecessors, (157), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 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) [2021-11-20 23:43:59,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:43:59,089 INFO L93 Difference]: Finished difference Result 204 states and 332 transitions. [2021-11-20 23:43:59,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 23:43:59,094 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 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 [2021-11-20 23:43:59,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:43:59,108 INFO L225 Difference]: With dead ends: 204 [2021-11-20 23:43:59,108 INFO L226 Difference]: Without dead ends: 99 [2021-11-20 23:43:59,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 23:43:59,123 INFO L933 BasicCegarLoop]: 144 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, 144 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 [2021-11-20 23:43:59,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:43:59,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-11-20 23:43:59,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2021-11-20 23:43:59,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 92 states have (on average 1.423913043478261) internal successors, (131), 92 states have internal predecessors, (131), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 23:43:59,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 139 transitions. [2021-11-20 23:43:59,185 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 139 transitions. Word has length 15 [2021-11-20 23:43:59,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:43:59,186 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 139 transitions. [2021-11-20 23:43:59,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 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) [2021-11-20 23:43:59,186 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 139 transitions. [2021-11-20 23:43:59,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:43:59,187 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:43:59,187 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:43:59,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-20 23:43:59,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:43:59,391 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:43:59,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:43:59,392 INFO L85 PathProgramCache]: Analyzing trace with hash -114752879, now seen corresponding path program 1 times [2021-11-20 23:43:59,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:43:59,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1656873908] [2021-11-20 23:43:59,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:43:59,394 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:43:59,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:43:59,396 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:43:59,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 23:43:59,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:43:59,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 23:43:59,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:44:00,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:44:00,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:44:00,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:44:00,677 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:44:00,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1656873908] [2021-11-20 23:44:00,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1656873908] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:44:00,677 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:44:00,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 23:44:00,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107288690] [2021-11-20 23:44:00,678 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:44:00,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:44:00,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:44:00,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:44:00,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:44:00,681 INFO L87 Difference]: Start difference. First operand 99 states and 139 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2021-11-20 23:44:00,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:44:00,917 INFO L93 Difference]: Finished difference Result 187 states and 266 transitions. [2021-11-20 23:44:00,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:44:00,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 18 [2021-11-20 23:44:00,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:44:00,926 INFO L225 Difference]: With dead ends: 187 [2021-11-20 23:44:00,927 INFO L226 Difference]: Without dead ends: 99 [2021-11-20 23:44:00,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:44:00,933 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 0 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:44:00,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 272 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 23:44:00,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-11-20 23:44:00,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2021-11-20 23:44:00,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 92 states have (on average 1.4130434782608696) internal successors, (130), 92 states have internal predecessors, (130), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 23:44:00,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 138 transitions. [2021-11-20 23:44:00,966 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 138 transitions. Word has length 18 [2021-11-20 23:44:00,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:44:00,968 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 138 transitions. [2021-11-20 23:44:00,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2021-11-20 23:44:00,969 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 138 transitions. [2021-11-20 23:44:00,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-20 23:44:00,971 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:44:00,971 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] [2021-11-20 23:44:00,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-20 23:44:01,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:44:01,187 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:44:01,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:44:01,188 INFO L85 PathProgramCache]: Analyzing trace with hash -2086328612, now seen corresponding path program 1 times [2021-11-20 23:44:01,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:44:01,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1207025778] [2021-11-20 23:44:01,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:44:01,189 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:44:01,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:44:01,195 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:44:01,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 23:44:01,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:44:01,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-20 23:44:01,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:44:06,643 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 50 treesize of output 50 [2021-11-20 23:44:10,386 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 23:44:10,386 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 86 treesize of output 86 [2021-11-20 23:44:11,078 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 20 treesize of output 14 [2021-11-20 23:44:16,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:44:16,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:44:20,587 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 23:44:20,587 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 100 treesize of output 92 [2021-11-20 23:44:20,737 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 23:44:20,737 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 92 treesize of output 92 [2021-11-20 23:44:21,408 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 56 treesize of output 52 [2021-11-20 23:44:48,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:44:48,170 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:44:48,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1207025778] [2021-11-20 23:44:48,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1207025778] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:44:48,170 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:44:48,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 22 [2021-11-20 23:44:48,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084786050] [2021-11-20 23:44:48,171 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:44:48,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-20 23:44:48,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:44:48,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-20 23:44:48,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=399, Unknown=4, NotChecked=0, Total=462 [2021-11-20 23:44:48,173 INFO L87 Difference]: Start difference. First operand 99 states and 138 transitions. Second operand has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 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) [2021-11-20 23:44:48,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:44:48,218 INFO L93 Difference]: Finished difference Result 103 states and 141 transitions. [2021-11-20 23:44:48,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 23:44:48,218 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 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 22 [2021-11-20 23:44:48,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:44:48,221 INFO L225 Difference]: With dead ends: 103 [2021-11-20 23:44:48,221 INFO L226 Difference]: Without dead ends: 99 [2021-11-20 23:44:48,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 24.3s TimeCoverageRelationStatistics Valid=59, Invalid=399, Unknown=4, NotChecked=0, Total=462 [2021-11-20 23:44:48,223 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 16 mSDsluCounter, 1560 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1687 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:44:48,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 1687 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 87 Unchecked, 0.0s Time] [2021-11-20 23:44:48,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-11-20 23:44:48,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2021-11-20 23:44:48,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 92 states have (on average 1.4021739130434783) internal successors, (129), 92 states have internal predecessors, (129), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 23:44:48,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 137 transitions. [2021-11-20 23:44:48,239 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 137 transitions. Word has length 22 [2021-11-20 23:44:48,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:44:48,239 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 137 transitions. [2021-11-20 23:44:48,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 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) [2021-11-20 23:44:48,240 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 137 transitions. [2021-11-20 23:44:48,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-20 23:44:48,242 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:44:48,242 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] [2021-11-20 23:44:48,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-20 23:44:48,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:44:48,455 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:44:48,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:44:48,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1752843547, now seen corresponding path program 1 times [2021-11-20 23:44:48,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:44:48,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1912516352] [2021-11-20 23:44:48,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:44:48,458 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:44:48,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:44:48,459 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:44:48,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 23:44:48,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:44:48,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 23:44:48,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:44:51,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:44:51,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:44:55,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:44:55,015 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:44:55,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1912516352] [2021-11-20 23:44:55,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1912516352] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:44:55,016 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:44:55,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-20 23:44:55,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705339225] [2021-11-20 23:44:55,017 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:44:55,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 23:44:55,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:44:55,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 23:44:55,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-20 23:44:55,019 INFO L87 Difference]: Start difference. First operand 99 states and 137 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 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) [2021-11-20 23:44:55,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:44:55,034 INFO L93 Difference]: Finished difference Result 169 states and 238 transitions. [2021-11-20 23:44:55,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:44:55,034 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 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 27 [2021-11-20 23:44:55,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:44:55,036 INFO L225 Difference]: With dead ends: 169 [2021-11-20 23:44:55,036 INFO L226 Difference]: Without dead ends: 93 [2021-11-20 23:44:55,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-20 23:44:55,039 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 2 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:44:55,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 803 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 16 Unchecked, 0.0s Time] [2021-11-20 23:44:55,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-11-20 23:44:55,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2021-11-20 23:44:55,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 86 states have (on average 1.372093023255814) internal successors, (118), 86 states have internal predecessors, (118), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 23:44:55,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 126 transitions. [2021-11-20 23:44:55,051 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 126 transitions. Word has length 27 [2021-11-20 23:44:55,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:44:55,051 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 126 transitions. [2021-11-20 23:44:55,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 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) [2021-11-20 23:44:55,052 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 126 transitions. [2021-11-20 23:44:55,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-20 23:44:55,053 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:44:55,053 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] [2021-11-20 23:44:55,090 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-20 23:44:55,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:44:55,273 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:44:55,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:44:55,273 INFO L85 PathProgramCache]: Analyzing trace with hash -144061543, now seen corresponding path program 1 times [2021-11-20 23:44:55,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:44:55,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1752322125] [2021-11-20 23:44:55,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:44:55,275 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:44:55,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:44:55,276 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:44:55,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-20 23:44:55,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:44:55,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 23:44:55,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:45:01,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:45:01,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:45:09,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:45:09,725 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:45:09,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1752322125] [2021-11-20 23:45:09,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1752322125] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:45:09,726 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:45:09,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-20 23:45:09,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269436637] [2021-11-20 23:45:09,726 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:45:09,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 23:45:09,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:45:09,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 23:45:09,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-20 23:45:09,729 INFO L87 Difference]: Start difference. First operand 93 states and 126 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 9 states have internal predecessors, (53), 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) [2021-11-20 23:45:16,888 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:45:21,061 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.71s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:45:23,066 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:45:25,113 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:45:26,819 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:45:28,938 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:45:31,642 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:45:36,315 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.50s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:45:37,404 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:45:39,951 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:45:41,957 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:45:44,213 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:45:46,221 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:45:49,097 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.65s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:45:51,116 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:45:53,122 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:45:54,707 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:45:57,669 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.64s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:46:00,468 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.80s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:46:03,233 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.76s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:46:06,063 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.83s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:46:06,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:46:06,420 INFO L93 Difference]: Finished difference Result 101 states and 134 transitions. [2021-11-20 23:46:06,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:46:06,424 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 9 states have internal predecessors, (53), 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 27 [2021-11-20 23:46:06,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:46:06,427 INFO L225 Difference]: With dead ends: 101 [2021-11-20 23:46:06,428 INFO L226 Difference]: Without dead ends: 96 [2021-11-20 23:46:06,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:46:06,430 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 96 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 1 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:46:06,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 542 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 181 Invalid, 15 Unknown, 0 Unchecked, 53.0s Time] [2021-11-20 23:46:06,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-11-20 23:46:06,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 93. [2021-11-20 23:46:06,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 86 states have (on average 1.3604651162790697) internal successors, (117), 86 states have internal predecessors, (117), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 23:46:06,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 125 transitions. [2021-11-20 23:46:06,444 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 125 transitions. Word has length 27 [2021-11-20 23:46:06,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:46:06,445 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 125 transitions. [2021-11-20 23:46:06,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 9 states have internal predecessors, (53), 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) [2021-11-20 23:46:06,445 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 125 transitions. [2021-11-20 23:46:06,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-20 23:46:06,447 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:46:06,447 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] [2021-11-20 23:46:06,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-20 23:46:06,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:46:06,650 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:46:06,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:46:06,651 INFO L85 PathProgramCache]: Analyzing trace with hash -142214501, now seen corresponding path program 1 times [2021-11-20 23:46:06,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:46:06,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1876804526] [2021-11-20 23:46:06,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:46:06,655 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:46:06,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:46:06,656 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:46:06,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-20 23:46:07,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:46:07,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 23:46:07,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:46:09,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:46:09,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:46:12,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:46:12,063 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:46:12,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1876804526] [2021-11-20 23:46:12,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1876804526] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:46:12,064 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:46:12,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-20 23:46:12,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953334231] [2021-11-20 23:46:12,064 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:46:12,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:46:12,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:46:12,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:46:12,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:46:12,066 INFO L87 Difference]: Start difference. First operand 93 states and 125 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 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) [2021-11-20 23:46:12,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:46:12,077 INFO L93 Difference]: Finished difference Result 101 states and 131 transitions. [2021-11-20 23:46:12,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:46:12,078 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 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 27 [2021-11-20 23:46:12,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:46:12,079 INFO L225 Difference]: With dead ends: 101 [2021-11-20 23:46:12,080 INFO L226 Difference]: Without dead ends: 95 [2021-11-20 23:46:12,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:46:12,081 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 50 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:46:12,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 680 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 7 Unchecked, 0.0s Time] [2021-11-20 23:46:12,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-11-20 23:46:12,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 91. [2021-11-20 23:46:12,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 84 states have (on average 1.3571428571428572) internal successors, (114), 84 states have internal predecessors, (114), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 23:46:12,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 122 transitions. [2021-11-20 23:46:12,093 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 122 transitions. Word has length 27 [2021-11-20 23:46:12,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:46:12,093 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 122 transitions. [2021-11-20 23:46:12,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 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) [2021-11-20 23:46:12,094 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 122 transitions. [2021-11-20 23:46:12,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-20 23:46:12,095 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:46:12,095 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] [2021-11-20 23:46:12,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-20 23:46:12,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:46:12,311 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:46:12,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:46:12,311 INFO L85 PathProgramCache]: Analyzing trace with hash -489049033, now seen corresponding path program 1 times [2021-11-20 23:46:12,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:46:12,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [324386448] [2021-11-20 23:46:12,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:46:12,312 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:46:12,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:46:12,313 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:46:12,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-20 23:46:12,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:46:12,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 23:46:12,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:46:15,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:46:15,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:46:19,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:46:19,034 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:46:19,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [324386448] [2021-11-20 23:46:19,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [324386448] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:46:19,035 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:46:19,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-20 23:46:19,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369449245] [2021-11-20 23:46:19,036 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:46:19,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 23:46:19,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:46:19,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 23:46:19,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-20 23:46:19,037 INFO L87 Difference]: Start difference. First operand 91 states and 122 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 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) [2021-11-20 23:46:20,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:46:20,196 INFO L93 Difference]: Finished difference Result 134 states and 175 transitions. [2021-11-20 23:46:20,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:46:20,210 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 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 [2021-11-20 23:46:20,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:46:20,212 INFO L225 Difference]: With dead ends: 134 [2021-11-20 23:46:20,212 INFO L226 Difference]: Without dead ends: 74 [2021-11-20 23:46:20,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-20 23:46:20,214 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 19 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:46:20,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 506 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 24 Unchecked, 1.0s Time] [2021-11-20 23:46:20,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-11-20 23:46:20,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 70. [2021-11-20 23:46:20,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 65 states have (on average 1.2769230769230768) internal successors, (83), 65 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:46:20,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 87 transitions. [2021-11-20 23:46:20,223 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 87 transitions. Word has length 28 [2021-11-20 23:46:20,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:46:20,224 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 87 transitions. [2021-11-20 23:46:20,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 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) [2021-11-20 23:46:20,224 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 87 transitions. [2021-11-20 23:46:20,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-20 23:46:20,226 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:46:20,226 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] [2021-11-20 23:46:20,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-20 23:46:20,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:46:20,449 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:46:20,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:46:20,450 INFO L85 PathProgramCache]: Analyzing trace with hash -511928521, now seen corresponding path program 1 times [2021-11-20 23:46:20,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:46:20,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1733777174] [2021-11-20 23:46:20,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:46:20,451 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:46:20,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:46:20,453 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:46:20,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-20 23:46:20,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:46:20,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 23:46:20,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:46:24,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:46:24,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:46:30,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:46:30,084 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:46:30,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1733777174] [2021-11-20 23:46:30,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1733777174] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:46:30,085 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:46:30,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-11-20 23:46:30,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976024979] [2021-11-20 23:46:30,085 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:46:30,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 23:46:30,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:46:30,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 23:46:30,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:46:30,087 INFO L87 Difference]: Start difference. First operand 70 states and 87 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 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) [2021-11-20 23:46:31,610 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:46:32,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:46:32,576 INFO L93 Difference]: Finished difference Result 85 states and 100 transitions. [2021-11-20 23:46:32,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:46:32,577 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 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 [2021-11-20 23:46:32,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:46:32,579 INFO L225 Difference]: With dead ends: 85 [2021-11-20 23:46:32,579 INFO L226 Difference]: Without dead ends: 81 [2021-11-20 23:46:32,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:46:32,580 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 13 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:46:32,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 757 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 23 Unchecked, 2.5s Time] [2021-11-20 23:46:32,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-11-20 23:46:32,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 70. [2021-11-20 23:46:32,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 65 states have (on average 1.2615384615384615) internal successors, (82), 65 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:46:32,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 86 transitions. [2021-11-20 23:46:32,590 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 86 transitions. Word has length 28 [2021-11-20 23:46:32,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:46:32,591 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 86 transitions. [2021-11-20 23:46:32,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 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) [2021-11-20 23:46:32,591 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 86 transitions. [2021-11-20 23:46:32,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-20 23:46:32,593 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:46:32,593 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] [2021-11-20 23:46:32,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-20 23:46:32,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:46:32,819 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:46:32,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:46:32,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1779988844, now seen corresponding path program 1 times [2021-11-20 23:46:32,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:46:32,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1564419849] [2021-11-20 23:46:32,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:46:32,820 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:46:32,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:46:32,835 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:46:32,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-20 23:46:33,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:46:33,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 23:46:33,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:46:40,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:46:40,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:46:55,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:46:55,308 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:46:55,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1564419849] [2021-11-20 23:46:55,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1564419849] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:46:55,311 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:46:55,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-20 23:46:55,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784325526] [2021-11-20 23:46:55,312 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:46:55,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 23:46:55,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:46:55,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 23:46:55,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-20 23:46:55,314 INFO L87 Difference]: Start difference. First operand 70 states and 86 transitions. Second operand has 10 states, 10 states have (on average 5.7) internal successors, (57), 9 states have internal predecessors, (57), 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) [2021-11-20 23:47:03,876 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:47:05,756 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:47:11,631 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.41s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:47:14,499 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:47:16,503 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:47:18,753 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:47:20,771 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:47:23,602 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.62s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:47:26,455 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.85s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:47:29,243 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.79s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:47:32,087 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.84s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:47:32,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:47:32,087 INFO L93 Difference]: Finished difference Result 82 states and 96 transitions. [2021-11-20 23:47:32,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:47:32,302 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 9 states have internal predecessors, (57), 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 [2021-11-20 23:47:32,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:47:32,303 INFO L225 Difference]: With dead ends: 82 [2021-11-20 23:47:32,303 INFO L226 Difference]: Without dead ends: 77 [2021-11-20 23:47:32,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:47:32,305 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 54 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:47:32,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 324 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 10 Unknown, 0 Unchecked, 32.1s Time] [2021-11-20 23:47:32,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-11-20 23:47:32,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 70. [2021-11-20 23:47:32,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 65 states have (on average 1.2461538461538462) internal successors, (81), 65 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:47:32,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 85 transitions. [2021-11-20 23:47:32,313 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 85 transitions. Word has length 29 [2021-11-20 23:47:32,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:47:32,313 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 85 transitions. [2021-11-20 23:47:32,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 9 states have internal predecessors, (57), 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) [2021-11-20 23:47:32,313 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 85 transitions. [2021-11-20 23:47:32,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-20 23:47:32,315 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:47:32,315 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] [2021-11-20 23:47:32,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-20 23:47:32,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:47:32,537 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:47:32,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:47:32,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1781835886, now seen corresponding path program 1 times [2021-11-20 23:47:32,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:47:32,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1426448779] [2021-11-20 23:47:32,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:47:32,538 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:47:32,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:47:32,539 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:47:32,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-20 23:47:32,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:47:32,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 23:47:32,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:47:35,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:47:35,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:47:38,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:47:38,258 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:47:38,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1426448779] [2021-11-20 23:47:38,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1426448779] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:47:38,258 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:47:38,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-20 23:47:38,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365140284] [2021-11-20 23:47:38,259 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:47:38,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:47:38,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:47:38,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:47:38,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:47:38,260 INFO L87 Difference]: Start difference. First operand 70 states and 85 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 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) [2021-11-20 23:47:38,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:47:38,266 INFO L93 Difference]: Finished difference Result 78 states and 91 transitions. [2021-11-20 23:47:38,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:47:38,266 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 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 [2021-11-20 23:47:38,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:47:38,267 INFO L225 Difference]: With dead ends: 78 [2021-11-20 23:47:38,267 INFO L226 Difference]: Without dead ends: 70 [2021-11-20 23:47:38,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:47:38,269 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 28 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:47:38,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 357 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 6 Unchecked, 0.0s Time] [2021-11-20 23:47:38,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-11-20 23:47:38,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2021-11-20 23:47:38,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 61 states have (on average 1.2295081967213115) internal successors, (75), 61 states have internal predecessors, (75), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:47:38,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 79 transitions. [2021-11-20 23:47:38,278 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 79 transitions. Word has length 29 [2021-11-20 23:47:38,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:47:38,278 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 79 transitions. [2021-11-20 23:47:38,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 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) [2021-11-20 23:47:38,279 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 79 transitions. [2021-11-20 23:47:38,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-20 23:47:38,280 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:47:38,280 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] [2021-11-20 23:47:38,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-20 23:47:38,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:47:38,491 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:47:38,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:47:38,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1308443982, now seen corresponding path program 1 times [2021-11-20 23:47:38,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:47:38,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1115942329] [2021-11-20 23:47:38,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:47:38,492 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:47:38,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:47:38,493 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:47:38,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-20 23:47:38,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:47:38,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-20 23:47:38,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:47:43,989 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_skolemized_q#valueAsBitvector_32| (_ BitVec 64)) (|v_skolemized_q#valueAsBitvector_31| (_ BitVec 64))) (and (= (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_32|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_32|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_32|)) (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_31|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_31|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_31|))) (not (= (bvlshr (bvadd (bvand (_ bv2147483647 32) ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_31|)) (_ bv2148532224 32)) (_ bv31 32)) (_ bv0 32))) (= ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_32|) |c_ULTIMATE.start___ieee754_atan2_~hx~1#1|))) is different from true [2021-11-20 23:47:54,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:47:54,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:48:11,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:48:11,929 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:48:11,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1115942329] [2021-11-20 23:48:11,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1115942329] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:48:11,929 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:48:11,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 18 [2021-11-20 23:48:11,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591032254] [2021-11-20 23:48:11,930 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:48:11,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 23:48:11,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:48:11,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 23:48:11,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=223, Unknown=3, NotChecked=30, Total=306 [2021-11-20 23:48:11,932 INFO L87 Difference]: Start difference. First operand 66 states and 79 transitions. Second operand has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 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) [2021-11-20 23:48:13,944 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:48:22,937 WARN L227 SmtUtils]: Spent 6.11s on a formula simplification. DAG size of input: 31 DAG size of output: 26 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 23:48:22,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:48:22,945 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2021-11-20 23:48:22,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 23:48:22,946 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 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 [2021-11-20 23:48:22,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:48:22,947 INFO L225 Difference]: With dead ends: 70 [2021-11-20 23:48:22,947 INFO L226 Difference]: Without dead ends: 58 [2021-11-20 23:48:22,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 35.0s TimeCoverageRelationStatistics Valid=53, Invalid=254, Unknown=3, NotChecked=32, Total=342 [2021-11-20 23:48:22,949 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 18 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 77 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:48:22,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 594 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 1 Unknown, 77 Unchecked, 2.0s Time] [2021-11-20 23:48:22,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-11-20 23:48:22,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-11-20 23:48:22,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 1.2075471698113207) internal successors, (64), 53 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:48:22,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2021-11-20 23:48:22,958 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 29 [2021-11-20 23:48:22,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:48:22,958 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2021-11-20 23:48:22,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 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) [2021-11-20 23:48:22,959 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2021-11-20 23:48:22,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-20 23:48:22,960 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:48:22,960 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, 1] [2021-11-20 23:48:22,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-20 23:48:23,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:48:23,186 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:48:23,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:48:23,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1918665192, now seen corresponding path program 1 times [2021-11-20 23:48:23,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:48:23,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [210374195] [2021-11-20 23:48:23,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:48:23,187 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:48:23,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:48:23,188 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:48:23,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-20 23:48:23,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:48:23,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-20 23:48:23,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:48:25,498 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 [2021-11-20 23:48:34,090 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 23:48:34,091 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 65 treesize of output 65 [2021-11-20 23:48:34,599 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 20 treesize of output 14 [2021-11-20 23:48:39,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:48:39,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:48:47,715 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 23:48:47,715 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 72 treesize of output 77 [2021-11-20 23:48:47,925 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 23:48:47,926 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 77 treesize of output 79 [2021-11-20 23:48:48,141 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 52 treesize of output 48 [2021-11-20 23:49:09,141 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 23:49:09,141 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 65 treesize of output 70 [2021-11-20 23:49:09,313 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 23:49:09,314 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 70 treesize of output 72 [2021-11-20 23:49:09,937 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 [2021-11-20 23:49:50,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:49:50,143 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:49:50,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [210374195] [2021-11-20 23:49:50,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [210374195] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:49:50,143 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:49:50,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 15 [2021-11-20 23:49:50,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708069213] [2021-11-20 23:49:50,144 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:49:50,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 23:49:50,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:49:50,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 23:49:50,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-11-20 23:49:50,145 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand has 15 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:49:50,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:49:50,188 INFO L93 Difference]: Finished difference Result 65 states and 74 transitions. [2021-11-20 23:49:50,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 23:49:50,189 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 35 [2021-11-20 23:49:50,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:49:50,191 INFO L225 Difference]: With dead ends: 65 [2021-11-20 23:49:50,191 INFO L226 Difference]: Without dead ends: 58 [2021-11-20 23:49:50,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-11-20 23:49:50,192 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 9 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:49:50,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 453 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 59 Unchecked, 0.0s Time] [2021-11-20 23:49:50,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-11-20 23:49:50,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-11-20 23:49:50,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 1.1886792452830188) internal successors, (63), 53 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:49:50,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2021-11-20 23:49:50,201 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 35 [2021-11-20 23:49:50,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:49:50,201 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2021-11-20 23:49:50,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:49:50,202 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2021-11-20 23:49:50,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-20 23:49:50,203 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:49:50,203 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, 1, 1, 1, 1] [2021-11-20 23:49:50,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-20 23:49:50,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:49:50,419 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:49:50,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:49:50,419 INFO L85 PathProgramCache]: Analyzing trace with hash -521190685, now seen corresponding path program 1 times [2021-11-20 23:49:50,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:49:50,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [470830002] [2021-11-20 23:49:50,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:49:50,420 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:49:50,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:49:50,421 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:49:50,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-20 23:49:50,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:49:50,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-20 23:49:50,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:49:54,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:49:54,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:50:03,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:50:03,184 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:50:03,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [470830002] [2021-11-20 23:50:03,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [470830002] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:50:03,185 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:50:03,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 13 [2021-11-20 23:50:03,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884073353] [2021-11-20 23:50:03,185 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:50:03,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 23:50:03,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:50:03,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 23:50:03,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:50:03,187 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:50:06,398 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.72s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:50:09,335 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.94s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:50:12,177 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.84s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:50:15,047 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.87s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:50:18,734 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.69s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:50:21,407 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.67s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:50:23,610 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:50:23,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:50:23,611 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2021-11-20 23:50:23,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 23:50:23,687 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 35 [2021-11-20 23:50:23,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:50:23,687 INFO L225 Difference]: With dead ends: 69 [2021-11-20 23:50:23,688 INFO L226 Difference]: Without dead ends: 55 [2021-11-20 23:50:23,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-20 23:50:23,689 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 48 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 20.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:50:23,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 438 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 7 Unknown, 56 Unchecked, 20.0s Time] [2021-11-20 23:50:23,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-11-20 23:50:23,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-11-20 23:50:23,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 50 states have (on average 1.14) internal successors, (57), 50 states have internal predecessors, (57), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:50:23,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2021-11-20 23:50:23,695 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 35 [2021-11-20 23:50:23,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:50:23,696 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2021-11-20 23:50:23,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:50:23,696 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2021-11-20 23:50:23,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-20 23:50:23,697 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:50:23,697 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, 1, 1] [2021-11-20 23:50:23,716 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-20 23:50:23,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:50:23,903 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:50:23,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:50:23,903 INFO L85 PathProgramCache]: Analyzing trace with hash 670836306, now seen corresponding path program 1 times [2021-11-20 23:50:23,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:50:23,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [577778463] [2021-11-20 23:50:23,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:50:23,904 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:50:23,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:50:23,906 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:50:23,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-20 23:50:24,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:50:24,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 23:50:24,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:50:27,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:50:27,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:50:37,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:50:37,100 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:50:37,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [577778463] [2021-11-20 23:50:37,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [577778463] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:50:37,101 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:50:37,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-11-20 23:50:37,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054768711] [2021-11-20 23:50:37,101 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:50:37,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 23:50:37,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:50:37,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 23:50:37,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:50:37,103 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:50:40,450 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.66s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:50:43,408 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.96s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:50:46,212 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.80s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:50:49,105 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.89s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:50:52,766 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.66s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:50:55,432 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.67s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:50:57,636 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:50:57,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:50:57,636 INFO L93 Difference]: Finished difference Result 62 states and 67 transitions. [2021-11-20 23:50:57,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 23:50:57,718 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2021-11-20 23:50:57,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:50:57,718 INFO L225 Difference]: With dead ends: 62 [2021-11-20 23:50:57,718 INFO L226 Difference]: Without dead ends: 55 [2021-11-20 23:50:57,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-20 23:50:57,719 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 8 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 20.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:50:57,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 277 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 7 Unknown, 19 Unchecked, 20.2s Time] [2021-11-20 23:50:57,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-11-20 23:50:57,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-11-20 23:50:57,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 50 states have (on average 1.12) internal successors, (56), 50 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:50:57,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2021-11-20 23:50:57,727 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 36 [2021-11-20 23:50:57,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:50:57,727 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2021-11-20 23:50:57,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:50:57,728 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2021-11-20 23:50:57,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-20 23:50:57,728 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:50:57,729 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, 1, 1] [2021-11-20 23:50:57,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-20 23:50:57,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:50:57,939 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:50:57,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:50:57,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1558339987, now seen corresponding path program 1 times [2021-11-20 23:50:57,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:50:57,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1728376471] [2021-11-20 23:50:57,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:50:57,940 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:50:57,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:50:57,942 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:50:57,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9d051e-8541-467c-a1bc-a50c299ae76e/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-20 23:50:59,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:50:59,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-20 23:50:59,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:51:02,476 INFO L354 Elim1Store]: treesize reduction 222, result has 11.2 percent of original size [2021-11-20 23:51:02,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 98 treesize of output 107 [2021-11-20 23:51:03,460 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-11-20 23:51:03,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 98 treesize of output 107 [2021-11-20 23:51:10,938 INFO L354 Elim1Store]: treesize reduction 332, result has 13.1 percent of original size [2021-11-20 23:51:10,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 131 treesize of output 154 [2021-11-20 23:51:12,232 INFO L354 Elim1Store]: treesize reduction 73, result has 25.5 percent of original size [2021-11-20 23:51:12,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 139 treesize of output 154 [2021-11-20 23:51:25,170 INFO L354 Elim1Store]: treesize reduction 332, result has 13.1 percent of original size [2021-11-20 23:51:25,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 139 treesize of output 162 [2021-11-20 23:51:26,179 INFO L354 Elim1Store]: treesize reduction 73, result has 25.5 percent of original size [2021-11-20 23:51:26,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 147 treesize of output 162 [2021-11-20 23:51:34,469 INFO L354 Elim1Store]: treesize reduction 332, result has 13.1 percent of original size [2021-11-20 23:51:34,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 133 treesize of output 156 [2021-11-20 23:51:35,887 INFO L354 Elim1Store]: treesize reduction 73, result has 25.5 percent of original size [2021-11-20 23:51:35,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 141 treesize of output 156 [2021-11-20 23:51:42,899 INFO L354 Elim1Store]: treesize reduction 96, result has 1.0 percent of original size [2021-11-20 23:51:42,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 101 treesize of output 75 [2021-11-20 23:52:09,188 WARN L227 SmtUtils]: Spent 5.06s on a formula simplification that was a NOOP. DAG size: 74 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 23:52:15,802 INFO L354 Elim1Store]: treesize reduction 136, result has 0.7 percent of original size [2021-11-20 23:52:15,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 73819750499 treesize of output 68987912265