./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label15.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed933dea-de20-4dfb-8f36-5edf4ef82970/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed933dea-de20-4dfb-8f36-5edf4ef82970/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed933dea-de20-4dfb-8f36-5edf4ef82970/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed933dea-de20-4dfb-8f36-5edf4ef82970/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label15.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed933dea-de20-4dfb-8f36-5edf4ef82970/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed933dea-de20-4dfb-8f36-5edf4ef82970/bin/utaipan-EQgc7hIp5V --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 303e81240b0a1989638e497fa3fbaa4e2ebd948d9aafa1986663f2c99e7f43f3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:45:19,794 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:45:19,796 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:45:19,857 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:45:19,858 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:45:19,862 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:45:19,864 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:45:19,868 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:45:19,871 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:45:19,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:45:19,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:45:19,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:45:19,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:45:19,883 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:45:19,886 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:45:19,894 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:45:19,896 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:45:19,897 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:45:19,900 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:45:19,911 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:45:19,913 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:45:19,915 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:45:19,918 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:45:19,920 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:45:19,926 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:45:19,927 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:45:19,927 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:45:19,930 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:45:19,931 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:45:19,933 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:45:19,933 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:45:19,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:45:19,936 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:45:19,938 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:45:19,940 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:45:19,940 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:45:19,941 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:45:19,941 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:45:19,941 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:45:19,942 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:45:19,943 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:45:19,944 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed933dea-de20-4dfb-8f36-5edf4ef82970/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 03:45:19,993 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:45:19,994 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:45:19,994 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:45:19,995 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:45:20,002 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:45:20,002 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:45:20,002 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:45:20,003 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:45:20,003 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:45:20,003 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:45:20,004 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:45:20,005 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:45:20,005 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:45:20,005 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:45:20,005 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:45:20,006 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:45:20,006 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:45:20,006 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:45:20,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:45:20,008 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:45:20,008 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:45:20,009 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:45:20,009 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:45:20,009 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:45:20,009 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:45:20,009 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:45:20,012 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:45:20,012 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:45:20,012 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:45:20,013 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:45:20,013 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:45:20,013 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:45:20,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:45:20,014 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:45:20,014 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:45:20,014 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:45:20,015 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:45:20,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:45:20,015 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:45:20,015 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:45:20,016 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:45:20,016 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_ed933dea-de20-4dfb-8f36-5edf4ef82970/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed933dea-de20-4dfb-8f36-5edf4ef82970/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 303e81240b0a1989638e497fa3fbaa4e2ebd948d9aafa1986663f2c99e7f43f3 [2021-11-23 03:45:20,326 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:45:20,373 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:45:20,376 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:45:20,378 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:45:20,379 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:45:20,381 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed933dea-de20-4dfb-8f36-5edf4ef82970/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/eca-rers2012/Problem02_label15.c [2021-11-23 03:45:20,483 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed933dea-de20-4dfb-8f36-5edf4ef82970/bin/utaipan-EQgc7hIp5V/data/e9c230303/44da30a461164f0da4749d6912cf2df8/FLAG9d912c75d [2021-11-23 03:45:21,205 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:45:21,206 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed933dea-de20-4dfb-8f36-5edf4ef82970/sv-benchmarks/c/eca-rers2012/Problem02_label15.c [2021-11-23 03:45:21,216 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed933dea-de20-4dfb-8f36-5edf4ef82970/bin/utaipan-EQgc7hIp5V/data/e9c230303/44da30a461164f0da4749d6912cf2df8/FLAG9d912c75d [2021-11-23 03:45:21,467 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed933dea-de20-4dfb-8f36-5edf4ef82970/bin/utaipan-EQgc7hIp5V/data/e9c230303/44da30a461164f0da4749d6912cf2df8 [2021-11-23 03:45:21,469 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:45:21,472 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:45:21,483 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:45:21,484 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:45:21,487 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:45:21,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:45:21" (1/1) ... [2021-11-23 03:45:21,490 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13bf63bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:21, skipping insertion in model container [2021-11-23 03:45:21,491 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:45:21" (1/1) ... [2021-11-23 03:45:21,499 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:45:21,552 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:45:22,024 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_ed933dea-de20-4dfb-8f36-5edf4ef82970/sv-benchmarks/c/eca-rers2012/Problem02_label15.c[20193,20206] [2021-11-23 03:45:22,056 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:45:22,070 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:45:22,204 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_ed933dea-de20-4dfb-8f36-5edf4ef82970/sv-benchmarks/c/eca-rers2012/Problem02_label15.c[20193,20206] [2021-11-23 03:45:22,215 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:45:22,232 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:45:22,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:22 WrapperNode [2021-11-23 03:45:22,233 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:45:22,235 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:45:22,235 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:45:22,235 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:45:22,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:22" (1/1) ... [2021-11-23 03:45:22,270 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:22" (1/1) ... [2021-11-23 03:45:22,328 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 668 [2021-11-23 03:45:22,329 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:45:22,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:45:22,331 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:45:22,331 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:45:22,340 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:22" (1/1) ... [2021-11-23 03:45:22,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:22" (1/1) ... [2021-11-23 03:45:22,354 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:22" (1/1) ... [2021-11-23 03:45:22,358 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:22" (1/1) ... [2021-11-23 03:45:22,392 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:22" (1/1) ... [2021-11-23 03:45:22,409 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:22" (1/1) ... [2021-11-23 03:45:22,426 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:22" (1/1) ... [2021-11-23 03:45:22,432 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:45:22,440 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:45:22,440 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:45:22,440 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:45:22,441 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:22" (1/1) ... [2021-11-23 03:45:22,449 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:45:22,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed933dea-de20-4dfb-8f36-5edf4ef82970/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:45:22,480 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed933dea-de20-4dfb-8f36-5edf4ef82970/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:45:22,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed933dea-de20-4dfb-8f36-5edf4ef82970/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:45:22,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:45:22,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:45:22,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:45:22,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:45:22,623 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:45:22,624 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:45:23,704 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:45:23,950 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:45:23,950 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 03:45:23,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:45:23 BoogieIcfgContainer [2021-11-23 03:45:23,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:45:23,956 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:45:23,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:45:23,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:45:23,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:45:21" (1/3) ... [2021-11-23 03:45:23,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@306d7185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:45:23, skipping insertion in model container [2021-11-23 03:45:23,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:22" (2/3) ... [2021-11-23 03:45:23,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@306d7185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:45:23, skipping insertion in model container [2021-11-23 03:45:23,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:45:23" (3/3) ... [2021-11-23 03:45:23,966 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label15.c [2021-11-23 03:45:23,971 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:45:23,972 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:45:24,034 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:45:24,044 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 [2021-11-23 03:45:24,044 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:45:24,071 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 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) [2021-11-23 03:45:24,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-23 03:45:24,086 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:45:24,087 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:45:24,087 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:45:24,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:45:24,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1814584087, now seen corresponding path program 1 times [2021-11-23 03:45:24,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:45:24,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23151327] [2021-11-23 03:45:24,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:45:24,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:45:24,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:45:24,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:45:24,425 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:45:24,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23151327] [2021-11-23 03:45:24,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23151327] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:45:24,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:45:24,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:45:24,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646070766] [2021-11-23 03:45:24,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:45:24,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:45:24,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:45:24,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:45:24,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:45:24,486 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:45:25,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:45:25,010 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2021-11-23 03:45:25,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:45:25,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-23 03:45:25,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:45:25,033 INFO L225 Difference]: With dead ends: 251 [2021-11-23 03:45:25,033 INFO L226 Difference]: Without dead ends: 163 [2021-11-23 03:45:25,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:45:25,043 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 58 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:45:25,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 11 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 03:45:25,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-11-23 03:45:25,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-11-23 03:45:25,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.9320987654320987) internal successors, (313), 162 states have internal predecessors, (313), 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) [2021-11-23 03:45:25,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 313 transitions. [2021-11-23 03:45:25,132 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 313 transitions. Word has length 80 [2021-11-23 03:45:25,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:45:25,133 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 313 transitions. [2021-11-23 03:45:25,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:45:25,134 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 313 transitions. [2021-11-23 03:45:25,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-23 03:45:25,140 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:45:25,141 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:45:25,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:45:25,142 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:45:25,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:45:25,144 INFO L85 PathProgramCache]: Analyzing trace with hash -329013783, now seen corresponding path program 1 times [2021-11-23 03:45:25,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:45:25,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157651660] [2021-11-23 03:45:25,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:45:25,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:45:25,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:45:25,248 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:45:25,248 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:45:25,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157651660] [2021-11-23 03:45:25,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157651660] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:45:25,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:45:25,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:45:25,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416929883] [2021-11-23 03:45:25,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:45:25,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:45:25,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:45:25,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:45:25,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:45:25,252 INFO L87 Difference]: Start difference. First operand 163 states and 313 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:45:25,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:45:25,680 INFO L93 Difference]: Finished difference Result 485 states and 936 transitions. [2021-11-23 03:45:25,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:45:25,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-23 03:45:25,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:45:25,684 INFO L225 Difference]: With dead ends: 485 [2021-11-23 03:45:25,684 INFO L226 Difference]: Without dead ends: 323 [2021-11-23 03:45:25,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:45:25,688 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 113 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:45:25,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 21 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 03:45:25,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-11-23 03:45:25,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 243. [2021-11-23 03:45:25,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.871900826446281) internal successors, (453), 242 states have internal predecessors, (453), 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) [2021-11-23 03:45:25,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 453 transitions. [2021-11-23 03:45:25,706 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 453 transitions. Word has length 91 [2021-11-23 03:45:25,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:45:25,707 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 453 transitions. [2021-11-23 03:45:25,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:45:25,708 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 453 transitions. [2021-11-23 03:45:25,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-23 03:45:25,711 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:45:25,711 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:45:25,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:45:25,712 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:45:25,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:45:25,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1679360758, now seen corresponding path program 1 times [2021-11-23 03:45:25,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:45:25,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333333362] [2021-11-23 03:45:25,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:45:25,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:45:25,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:45:25,774 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:45:25,775 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:45:25,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333333362] [2021-11-23 03:45:25,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333333362] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:45:25,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:45:25,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:45:25,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175609224] [2021-11-23 03:45:25,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:45:25,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:45:25,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:45:25,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:45:25,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:45:25,778 INFO L87 Difference]: Start difference. First operand 243 states and 453 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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) [2021-11-23 03:45:26,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:45:26,176 INFO L93 Difference]: Finished difference Result 725 states and 1356 transitions. [2021-11-23 03:45:26,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:45:26,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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 98 [2021-11-23 03:45:26,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:45:26,180 INFO L225 Difference]: With dead ends: 725 [2021-11-23 03:45:26,180 INFO L226 Difference]: Without dead ends: 483 [2021-11-23 03:45:26,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:45:26,184 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 79 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:45:26,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 64 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 03:45:26,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-11-23 03:45:26,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 403. [2021-11-23 03:45:26,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 402 states have (on average 1.7860696517412935) internal successors, (718), 402 states have internal predecessors, (718), 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) [2021-11-23 03:45:26,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 718 transitions. [2021-11-23 03:45:26,229 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 718 transitions. Word has length 98 [2021-11-23 03:45:26,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:45:26,229 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 718 transitions. [2021-11-23 03:45:26,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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) [2021-11-23 03:45:26,230 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 718 transitions. [2021-11-23 03:45:26,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-23 03:45:26,233 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:45:26,233 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:45:26,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:45:26,234 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:45:26,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:45:26,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1886019200, now seen corresponding path program 1 times [2021-11-23 03:45:26,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:45:26,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665075336] [2021-11-23 03:45:26,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:45:26,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:45:26,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:45:26,317 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:45:26,318 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:45:26,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665075336] [2021-11-23 03:45:26,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665075336] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:45:26,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:45:26,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:45:26,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724263272] [2021-11-23 03:45:26,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:45:26,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:45:26,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:45:26,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:45:26,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:45:26,322 INFO L87 Difference]: Start difference. First operand 403 states and 718 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 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) [2021-11-23 03:45:26,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:45:26,695 INFO L93 Difference]: Finished difference Result 1205 states and 2151 transitions. [2021-11-23 03:45:26,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:45:26,696 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 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 102 [2021-11-23 03:45:26,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:45:26,701 INFO L225 Difference]: With dead ends: 1205 [2021-11-23 03:45:26,702 INFO L226 Difference]: Without dead ends: 803 [2021-11-23 03:45:26,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:45:26,712 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 97 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:45:26,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 30 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:45:26,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2021-11-23 03:45:26,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 723. [2021-11-23 03:45:26,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 722 states have (on average 1.6454293628808865) internal successors, (1188), 722 states have internal predecessors, (1188), 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) [2021-11-23 03:45:26,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1188 transitions. [2021-11-23 03:45:26,777 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1188 transitions. Word has length 102 [2021-11-23 03:45:26,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:45:26,778 INFO L470 AbstractCegarLoop]: Abstraction has 723 states and 1188 transitions. [2021-11-23 03:45:26,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 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) [2021-11-23 03:45:26,779 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1188 transitions. [2021-11-23 03:45:26,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-23 03:45:26,787 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:45:26,787 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:45:26,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 03:45:26,788 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:45:26,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:45:26,789 INFO L85 PathProgramCache]: Analyzing trace with hash 862385438, now seen corresponding path program 1 times [2021-11-23 03:45:26,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:45:26,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946454193] [2021-11-23 03:45:26,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:45:26,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:45:26,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:45:26,912 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-23 03:45:26,912 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:45:26,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946454193] [2021-11-23 03:45:26,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946454193] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:45:26,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:45:26,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:45:26,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777241797] [2021-11-23 03:45:26,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:45:26,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:45:26,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:45:26,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:45:26,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:45:26,918 INFO L87 Difference]: Start difference. First operand 723 states and 1188 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:45:27,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:45:27,289 INFO L93 Difference]: Finished difference Result 1605 states and 2610 transitions. [2021-11-23 03:45:27,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:45:27,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-11-23 03:45:27,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:45:27,295 INFO L225 Difference]: With dead ends: 1605 [2021-11-23 03:45:27,295 INFO L226 Difference]: Without dead ends: 883 [2021-11-23 03:45:27,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:45:27,298 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 78 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:45:27,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 70 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:45:27,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2021-11-23 03:45:27,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 883. [2021-11-23 03:45:27,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 1.5453514739229024) internal successors, (1363), 882 states have internal predecessors, (1363), 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) [2021-11-23 03:45:27,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1363 transitions. [2021-11-23 03:45:27,325 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1363 transitions. Word has length 128 [2021-11-23 03:45:27,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:45:27,325 INFO L470 AbstractCegarLoop]: Abstraction has 883 states and 1363 transitions. [2021-11-23 03:45:27,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:45:27,326 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1363 transitions. [2021-11-23 03:45:27,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-23 03:45:27,329 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:45:27,329 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:45:27,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 03:45:27,329 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:45:27,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:45:27,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1901983935, now seen corresponding path program 1 times [2021-11-23 03:45:27,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:45:27,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233371584] [2021-11-23 03:45:27,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:45:27,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:45:27,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:45:27,381 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-23 03:45:27,381 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:45:27,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233371584] [2021-11-23 03:45:27,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233371584] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:45:27,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:45:27,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:45:27,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57407405] [2021-11-23 03:45:27,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:45:27,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:45:27,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:45:27,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:45:27,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:45:27,384 INFO L87 Difference]: Start difference. First operand 883 states and 1363 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:45:27,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:45:27,764 INFO L93 Difference]: Finished difference Result 2245 states and 3460 transitions. [2021-11-23 03:45:27,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:45:27,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2021-11-23 03:45:27,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:45:27,773 INFO L225 Difference]: With dead ends: 2245 [2021-11-23 03:45:27,774 INFO L226 Difference]: Without dead ends: 1363 [2021-11-23 03:45:27,775 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 [2021-11-23 03:45:27,776 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 77 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:45:27,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 139 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:45:27,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2021-11-23 03:45:27,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1363. [2021-11-23 03:45:27,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 1362 states have (on average 1.4045521292217327) internal successors, (1913), 1362 states have internal predecessors, (1913), 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) [2021-11-23 03:45:27,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1913 transitions. [2021-11-23 03:45:27,813 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1913 transitions. Word has length 133 [2021-11-23 03:45:27,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:45:27,813 INFO L470 AbstractCegarLoop]: Abstraction has 1363 states and 1913 transitions. [2021-11-23 03:45:27,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:45:27,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1913 transitions. [2021-11-23 03:45:27,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-23 03:45:27,818 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:45:27,818 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:45:27,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 03:45:27,819 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:45:27,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:45:27,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1486173925, now seen corresponding path program 1 times [2021-11-23 03:45:27,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:45:27,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115949745] [2021-11-23 03:45:27,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:45:27,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:45:27,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:45:27,870 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-23 03:45:27,870 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:45:27,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115949745] [2021-11-23 03:45:27,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115949745] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:45:27,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:45:27,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:45:27,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325699685] [2021-11-23 03:45:27,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:45:27,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:45:27,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:45:27,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:45:27,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:45:27,874 INFO L87 Difference]: Start difference. First operand 1363 states and 1913 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2021-11-23 03:45:28,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:45:28,234 INFO L93 Difference]: Finished difference Result 3205 states and 4430 transitions. [2021-11-23 03:45:28,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:45:28,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 135 [2021-11-23 03:45:28,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:45:28,245 INFO L225 Difference]: With dead ends: 3205 [2021-11-23 03:45:28,246 INFO L226 Difference]: Without dead ends: 1843 [2021-11-23 03:45:28,248 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 [2021-11-23 03:45:28,249 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 73 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:45:28,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 30 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:45:28,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2021-11-23 03:45:28,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1683. [2021-11-23 03:45:28,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1682 states have (on average 1.3394768133174793) internal successors, (2253), 1682 states have internal predecessors, (2253), 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) [2021-11-23 03:45:28,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 2253 transitions. [2021-11-23 03:45:28,319 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 2253 transitions. Word has length 135 [2021-11-23 03:45:28,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:45:28,319 INFO L470 AbstractCegarLoop]: Abstraction has 1683 states and 2253 transitions. [2021-11-23 03:45:28,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2021-11-23 03:45:28,320 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 2253 transitions. [2021-11-23 03:45:28,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-23 03:45:28,325 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:45:28,325 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:45:28,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 03:45:28,326 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:45:28,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:45:28,326 INFO L85 PathProgramCache]: Analyzing trace with hash 497090661, now seen corresponding path program 1 times [2021-11-23 03:45:28,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:45:28,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761756738] [2021-11-23 03:45:28,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:45:28,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:45:28,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:45:28,386 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-23 03:45:28,387 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:45:28,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761756738] [2021-11-23 03:45:28,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761756738] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:45:28,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:45:28,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:45:28,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022219962] [2021-11-23 03:45:28,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:45:28,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:45:28,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:45:28,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:45:28,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:45:28,390 INFO L87 Difference]: Start difference. First operand 1683 states and 2253 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2021-11-23 03:45:28,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:45:28,696 INFO L93 Difference]: Finished difference Result 3205 states and 4325 transitions. [2021-11-23 03:45:28,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:45:28,696 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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 139 [2021-11-23 03:45:28,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:45:28,707 INFO L225 Difference]: With dead ends: 3205 [2021-11-23 03:45:28,707 INFO L226 Difference]: Without dead ends: 1523 [2021-11-23 03:45:28,714 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 [2021-11-23 03:45:28,715 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 70 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:45:28,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 145 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:45:28,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2021-11-23 03:45:28,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1523. [2021-11-23 03:45:28,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1522 states have (on average 1.283180026281209) internal successors, (1953), 1522 states have internal predecessors, (1953), 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) [2021-11-23 03:45:28,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 1953 transitions. [2021-11-23 03:45:28,756 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 1953 transitions. Word has length 139 [2021-11-23 03:45:28,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:45:28,758 INFO L470 AbstractCegarLoop]: Abstraction has 1523 states and 1953 transitions. [2021-11-23 03:45:28,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2021-11-23 03:45:28,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 1953 transitions. [2021-11-23 03:45:28,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-23 03:45:28,764 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:45:28,764 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:45:28,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 03:45:28,764 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:45:28,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:45:28,765 INFO L85 PathProgramCache]: Analyzing trace with hash -687530883, now seen corresponding path program 1 times [2021-11-23 03:45:28,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:45:28,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311089750] [2021-11-23 03:45:28,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:45:28,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:45:28,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:45:28,845 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-11-23 03:45:28,845 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:45:28,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311089750] [2021-11-23 03:45:28,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311089750] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:45:28,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:45:28,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:45:28,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503163261] [2021-11-23 03:45:28,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:45:28,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:45:28,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:45:28,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:45:28,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:45:28,848 INFO L87 Difference]: Start difference. First operand 1523 states and 1953 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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) [2021-11-23 03:45:29,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:45:29,181 INFO L93 Difference]: Finished difference Result 3045 states and 3905 transitions. [2021-11-23 03:45:29,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:45:29,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 157 [2021-11-23 03:45:29,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:45:29,191 INFO L225 Difference]: With dead ends: 3045 [2021-11-23 03:45:29,191 INFO L226 Difference]: Without dead ends: 1523 [2021-11-23 03:45:29,193 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 [2021-11-23 03:45:29,196 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 50 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:45:29,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 143 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:45:29,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2021-11-23 03:45:29,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1523. [2021-11-23 03:45:29,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1522 states have (on average 1.2470433639947438) internal successors, (1898), 1522 states have internal predecessors, (1898), 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) [2021-11-23 03:45:29,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 1898 transitions. [2021-11-23 03:45:29,237 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 1898 transitions. Word has length 157 [2021-11-23 03:45:29,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:45:29,238 INFO L470 AbstractCegarLoop]: Abstraction has 1523 states and 1898 transitions. [2021-11-23 03:45:29,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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) [2021-11-23 03:45:29,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 1898 transitions. [2021-11-23 03:45:29,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-23 03:45:29,243 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:45:29,243 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:45:29,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 03:45:29,244 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:45:29,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:45:29,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1455504653, now seen corresponding path program 1 times [2021-11-23 03:45:29,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:45:29,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339607376] [2021-11-23 03:45:29,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:45:29,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:45:29,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:45:29,323 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-11-23 03:45:29,324 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:45:29,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339607376] [2021-11-23 03:45:29,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339607376] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:45:29,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:45:29,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:45:29,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138601871] [2021-11-23 03:45:29,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:45:29,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:45:29,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:45:29,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:45:29,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:45:29,326 INFO L87 Difference]: Start difference. First operand 1523 states and 1898 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:45:29,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:45:29,698 INFO L93 Difference]: Finished difference Result 3685 states and 4705 transitions. [2021-11-23 03:45:29,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:45:29,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 178 [2021-11-23 03:45:29,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:45:29,718 INFO L225 Difference]: With dead ends: 3685 [2021-11-23 03:45:29,718 INFO L226 Difference]: Without dead ends: 2163 [2021-11-23 03:45:29,724 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 [2021-11-23 03:45:29,725 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 62 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:45:29,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 119 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:45:29,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2163 states. [2021-11-23 03:45:29,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2163 to 2163. [2021-11-23 03:45:29,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2163 states, 2162 states have (on average 1.2502312673450509) internal successors, (2703), 2162 states have internal predecessors, (2703), 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) [2021-11-23 03:45:29,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2163 states to 2163 states and 2703 transitions. [2021-11-23 03:45:29,799 INFO L78 Accepts]: Start accepts. Automaton has 2163 states and 2703 transitions. Word has length 178 [2021-11-23 03:45:29,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:45:29,801 INFO L470 AbstractCegarLoop]: Abstraction has 2163 states and 2703 transitions. [2021-11-23 03:45:29,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:45:29,802 INFO L276 IsEmpty]: Start isEmpty. Operand 2163 states and 2703 transitions. [2021-11-23 03:45:29,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-23 03:45:29,808 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:45:29,808 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:45:29,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 03:45:29,809 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:45:29,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:45:29,810 INFO L85 PathProgramCache]: Analyzing trace with hash -464477684, now seen corresponding path program 1 times [2021-11-23 03:45:29,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:45:29,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554389260] [2021-11-23 03:45:29,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:45:29,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:45:29,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:45:30,015 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 68 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:45:30,015 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:45:30,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554389260] [2021-11-23 03:45:30,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554389260] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:45:30,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993277874] [2021-11-23 03:45:30,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:45:30,017 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:45:30,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed933dea-de20-4dfb-8f36-5edf4ef82970/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:45:30,024 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed933dea-de20-4dfb-8f36-5edf4ef82970/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:45:30,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed933dea-de20-4dfb-8f36-5edf4ef82970/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:45:30,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:45:30,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 03:45:30,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:45:30,591 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-23 03:45:30,591 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:45:30,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993277874] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:45:30,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:45:30,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-11-23 03:45:30,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968523283] [2021-11-23 03:45:30,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:45:30,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:45:30,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:45:30,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:45:30,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:45:30,594 INFO L87 Difference]: Start difference. First operand 2163 states and 2703 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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) [2021-11-23 03:45:31,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:45:31,004 INFO L93 Difference]: Finished difference Result 4643 states and 5814 transitions. [2021-11-23 03:45:31,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:45:31,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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 178 [2021-11-23 03:45:31,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:45:31,006 INFO L225 Difference]: With dead ends: 4643 [2021-11-23 03:45:31,006 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 03:45:31,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:45:31,012 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 14 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:45:31,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 28 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 03:45:31,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 03:45:31,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 03:45:31,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:45:31,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 03:45:31,014 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 178 [2021-11-23 03:45:31,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:45:31,014 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 03:45:31,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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) [2021-11-23 03:45:31,015 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 03:45:31,015 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 03:45:31,019 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 03:45:31,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed933dea-de20-4dfb-8f36-5edf4ef82970/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 03:45:31,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed933dea-de20-4dfb-8f36-5edf4ef82970/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:45:31,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-23 03:45:31,916 INFO L858 garLoopResultBuilder]: For program point L301(lines 301 423) no Hoare annotation was computed. [2021-11-23 03:45:31,916 INFO L858 garLoopResultBuilder]: For program point L235(lines 235 423) no Hoare annotation was computed. [2021-11-23 03:45:31,916 INFO L858 garLoopResultBuilder]: For program point L169(lines 169 423) no Hoare annotation was computed. [2021-11-23 03:45:31,916 INFO L858 garLoopResultBuilder]: For program point L303(lines 303 423) no Hoare annotation was computed. [2021-11-23 03:45:31,917 INFO L858 garLoopResultBuilder]: For program point L105(lines 105 423) no Hoare annotation was computed. [2021-11-23 03:45:31,917 INFO L858 garLoopResultBuilder]: For program point L568-1(lines 39 608) no Hoare annotation was computed. [2021-11-23 03:45:31,917 INFO L858 garLoopResultBuilder]: For program point L40(lines 40 423) no Hoare annotation was computed. [2021-11-23 03:45:31,917 INFO L858 garLoopResultBuilder]: For program point L371(lines 371 423) no Hoare annotation was computed. [2021-11-23 03:45:31,917 INFO L858 garLoopResultBuilder]: For program point L571-1(lines 39 608) no Hoare annotation was computed. [2021-11-23 03:45:31,917 INFO L858 garLoopResultBuilder]: For program point L307(lines 307 423) no Hoare annotation was computed. [2021-11-23 03:45:31,917 INFO L858 garLoopResultBuilder]: For program point L175(lines 175 423) no Hoare annotation was computed. [2021-11-23 03:45:31,917 INFO L858 garLoopResultBuilder]: For program point L109(lines 109 423) no Hoare annotation was computed. [2021-11-23 03:45:31,917 INFO L858 garLoopResultBuilder]: For program point L572(line 572) no Hoare annotation was computed. [2021-11-23 03:45:31,918 INFO L858 garLoopResultBuilder]: For program point L242(lines 242 423) no Hoare annotation was computed. [2021-11-23 03:45:31,918 INFO L858 garLoopResultBuilder]: For program point L45(lines 45 423) no Hoare annotation was computed. [2021-11-23 03:45:31,918 INFO L858 garLoopResultBuilder]: For program point L244(lines 244 423) no Hoare annotation was computed. [2021-11-23 03:45:31,918 INFO L858 garLoopResultBuilder]: For program point L179(lines 179 423) no Hoare annotation was computed. [2021-11-23 03:45:31,918 INFO L858 garLoopResultBuilder]: For program point L378(lines 378 423) no Hoare annotation was computed. [2021-11-23 03:45:31,918 INFO L858 garLoopResultBuilder]: For program point L48(lines 48 423) no Hoare annotation was computed. [2021-11-23 03:45:31,918 INFO L858 garLoopResultBuilder]: For program point L247(lines 247 423) no Hoare annotation was computed. [2021-11-23 03:45:31,918 INFO L858 garLoopResultBuilder]: For program point L116(lines 116 423) no Hoare annotation was computed. [2021-11-23 03:45:31,918 INFO L858 garLoopResultBuilder]: For program point L52(lines 52 423) no Hoare annotation was computed. [2021-11-23 03:45:31,918 INFO L858 garLoopResultBuilder]: For program point L185(lines 185 423) no Hoare annotation was computed. [2021-11-23 03:45:31,919 INFO L858 garLoopResultBuilder]: For program point L385(lines 385 423) no Hoare annotation was computed. [2021-11-23 03:45:31,919 INFO L858 garLoopResultBuilder]: For program point L319(lines 319 423) no Hoare annotation was computed. [2021-11-23 03:45:31,919 INFO L858 garLoopResultBuilder]: For program point L189(lines 189 423) no Hoare annotation was computed. [2021-11-23 03:45:31,921 INFO L858 garLoopResultBuilder]: For program point L123(lines 123 423) no Hoare annotation was computed. [2021-11-23 03:45:31,921 INFO L858 garLoopResultBuilder]: For program point L57(lines 57 423) no Hoare annotation was computed. [2021-11-23 03:45:31,921 INFO L858 garLoopResultBuilder]: For program point L388(lines 388 423) no Hoare annotation was computed. [2021-11-23 03:45:31,921 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-23 03:45:31,922 INFO L858 garLoopResultBuilder]: For program point L390(lines 390 423) no Hoare annotation was computed. [2021-11-23 03:45:31,922 INFO L858 garLoopResultBuilder]: For program point L324(lines 324 423) no Hoare annotation was computed. [2021-11-23 03:45:31,922 INFO L858 garLoopResultBuilder]: For program point L258(lines 258 423) no Hoare annotation was computed. [2021-11-23 03:45:31,922 INFO L858 garLoopResultBuilder]: For program point L60(lines 60 423) no Hoare annotation was computed. [2021-11-23 03:45:31,922 INFO L858 garLoopResultBuilder]: For program point L195(lines 195 423) no Hoare annotation was computed. [2021-11-23 03:45:31,922 INFO L858 garLoopResultBuilder]: For program point L129(lines 129 423) no Hoare annotation was computed. [2021-11-23 03:45:31,923 INFO L858 garLoopResultBuilder]: For program point L64(lines 64 423) no Hoare annotation was computed. [2021-11-23 03:45:31,923 INFO L858 garLoopResultBuilder]: For program point L263(lines 263 423) no Hoare annotation was computed. [2021-11-23 03:45:31,923 INFO L858 garLoopResultBuilder]: For program point L197(lines 197 423) no Hoare annotation was computed. [2021-11-23 03:45:31,923 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 572) no Hoare annotation was computed. [2021-11-23 03:45:31,923 INFO L858 garLoopResultBuilder]: For program point L199(lines 199 423) no Hoare annotation was computed. [2021-11-23 03:45:31,924 INFO L858 garLoopResultBuilder]: For program point L133(lines 133 423) no Hoare annotation was computed. [2021-11-23 03:45:31,924 INFO L858 garLoopResultBuilder]: For program point L399(lines 399 423) no Hoare annotation was computed. [2021-11-23 03:45:31,924 INFO L858 garLoopResultBuilder]: For program point L201(lines 201 423) no Hoare annotation was computed. [2021-11-23 03:45:31,924 INFO L858 garLoopResultBuilder]: For program point L69(lines 69 423) no Hoare annotation was computed. [2021-11-23 03:45:31,924 INFO L858 garLoopResultBuilder]: For program point L269(lines 269 423) no Hoare annotation was computed. [2021-11-23 03:45:31,924 INFO L858 garLoopResultBuilder]: For program point L204(lines 204 423) no Hoare annotation was computed. [2021-11-23 03:45:31,925 INFO L858 garLoopResultBuilder]: For program point L271(lines 271 423) no Hoare annotation was computed. [2021-11-23 03:45:31,925 INFO L858 garLoopResultBuilder]: For program point L404(lines 404 423) no Hoare annotation was computed. [2021-11-23 03:45:31,925 INFO L858 garLoopResultBuilder]: For program point L338(lines 338 423) no Hoare annotation was computed. [2021-11-23 03:45:31,925 INFO L858 garLoopResultBuilder]: For program point L140(lines 140 423) no Hoare annotation was computed. [2021-11-23 03:45:31,925 INFO L858 garLoopResultBuilder]: For program point L75(lines 75 423) no Hoare annotation was computed. [2021-11-23 03:45:31,925 INFO L858 garLoopResultBuilder]: For program point L208(lines 208 423) no Hoare annotation was computed. [2021-11-23 03:45:31,926 INFO L858 garLoopResultBuilder]: For program point L341(lines 341 423) no Hoare annotation was computed. [2021-11-23 03:45:31,926 INFO L858 garLoopResultBuilder]: For program point L408(lines 408 423) no Hoare annotation was computed. [2021-11-23 03:45:31,926 INFO L858 garLoopResultBuilder]: For program point L144(lines 144 423) no Hoare annotation was computed. [2021-11-23 03:45:31,926 INFO L854 garLoopResultBuilder]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse3 (= ~a11~0 0)) (.cse2 (= ~a25~0 1)) (.cse0 (= ~a19~0 1)) (.cse4 (<= ~a28~0 10)) (.cse1 (= ~a25~0 0))) (or (and .cse0 .cse1) (and .cse2 .cse3 .cse4) (and (<= 10 ~a28~0) .cse4 .cse0) (and (<= 9 ~a28~0) .cse2 (<= ~a28~0 9)) (and .cse3 .cse1) (and .cse2 (<= 8 ~a17~0) .cse4) (and .cse2 .cse0) (and .cse4 .cse1))) [2021-11-23 03:45:31,927 INFO L858 garLoopResultBuilder]: For program point L79(lines 79 423) no Hoare annotation was computed. [2021-11-23 03:45:31,927 INFO L858 garLoopResultBuilder]: For program point L212(lines 212 423) no Hoare annotation was computed. [2021-11-23 03:45:31,927 INFO L861 garLoopResultBuilder]: At program point L610(lines 610 627) the Hoare annotation is: true [2021-11-23 03:45:31,927 INFO L858 garLoopResultBuilder]: For program point L412(lines 412 423) no Hoare annotation was computed. [2021-11-23 03:45:31,927 INFO L858 garLoopResultBuilder]: For program point L347(lines 347 423) no Hoare annotation was computed. [2021-11-23 03:45:31,927 INFO L858 garLoopResultBuilder]: For program point L149(lines 149 423) no Hoare annotation was computed. [2021-11-23 03:45:31,928 INFO L858 garLoopResultBuilder]: For program point L414(lines 414 423) no Hoare annotation was computed. [2021-11-23 03:45:31,928 INFO L858 garLoopResultBuilder]: For program point L84(lines 84 423) no Hoare annotation was computed. [2021-11-23 03:45:31,928 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-23 03:45:31,928 INFO L858 garLoopResultBuilder]: For program point L417(lines 417 423) no Hoare annotation was computed. [2021-11-23 03:45:31,928 INFO L858 garLoopResultBuilder]: For program point L153(lines 153 423) no Hoare annotation was computed. [2021-11-23 03:45:31,929 INFO L854 garLoopResultBuilder]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse3 (= ~a11~0 0)) (.cse2 (= ~a25~0 1)) (.cse0 (= ~a19~0 1)) (.cse4 (<= ~a28~0 10)) (.cse1 (= ~a25~0 0))) (or (and .cse0 .cse1) (and .cse2 .cse3 .cse4) (and (<= 10 ~a28~0) .cse4 .cse0) (and (<= 9 ~a28~0) .cse2 (<= ~a28~0 9)) (and .cse3 .cse1) (and .cse2 (<= 8 ~a17~0) .cse4) (and .cse2 .cse0) (and .cse4 .cse1))) [2021-11-23 03:45:31,929 INFO L858 garLoopResultBuilder]: For program point L286(lines 286 423) no Hoare annotation was computed. [2021-11-23 03:45:31,929 INFO L858 garLoopResultBuilder]: For program point L419(lines 419 423) no Hoare annotation was computed. [2021-11-23 03:45:31,929 INFO L858 garLoopResultBuilder]: For program point L222(lines 222 423) no Hoare annotation was computed. [2021-11-23 03:45:31,929 INFO L858 garLoopResultBuilder]: For program point L290(lines 290 423) no Hoare annotation was computed. [2021-11-23 03:45:31,929 INFO L858 garLoopResultBuilder]: For program point L158(lines 158 423) no Hoare annotation was computed. [2021-11-23 03:45:31,930 INFO L858 garLoopResultBuilder]: For program point L92(lines 92 423) no Hoare annotation was computed. [2021-11-23 03:45:31,930 INFO L858 garLoopResultBuilder]: For program point L621(line 621) no Hoare annotation was computed. [2021-11-23 03:45:31,930 INFO L858 garLoopResultBuilder]: For program point L225(lines 225 423) no Hoare annotation was computed. [2021-11-23 03:45:31,930 INFO L858 garLoopResultBuilder]: For program point L359(lines 359 423) no Hoare annotation was computed. [2021-11-23 03:45:31,930 INFO L858 garLoopResultBuilder]: For program point L293(lines 293 423) no Hoare annotation was computed. [2021-11-23 03:45:31,930 INFO L858 garLoopResultBuilder]: For program point L228(lines 228 423) no Hoare annotation was computed. [2021-11-23 03:45:31,931 INFO L858 garLoopResultBuilder]: For program point L296(lines 296 423) no Hoare annotation was computed. [2021-11-23 03:45:31,931 INFO L858 garLoopResultBuilder]: For program point L164(lines 164 423) no Hoare annotation was computed. [2021-11-23 03:45:31,931 INFO L858 garLoopResultBuilder]: For program point L364(lines 364 423) no Hoare annotation was computed. [2021-11-23 03:45:31,931 INFO L858 garLoopResultBuilder]: For program point L233(lines 233 423) no Hoare annotation was computed. [2021-11-23 03:45:31,931 INFO L858 garLoopResultBuilder]: For program point L101(lines 101 423) no Hoare annotation was computed. [2021-11-23 03:45:31,935 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:45:31,938 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 03:45:31,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:45:31 BoogieIcfgContainer [2021-11-23 03:45:31,965 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 03:45:31,965 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 03:45:31,965 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 03:45:31,966 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 03:45:31,966 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:45:23" (3/4) ... [2021-11-23 03:45:31,970 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 03:45:31,993 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 115 nodes and edges [2021-11-23 03:45:31,999 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2021-11-23 03:45:32,001 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-11-23 03:45:32,003 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 03:45:32,133 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed933dea-de20-4dfb-8f36-5edf4ef82970/bin/utaipan-EQgc7hIp5V/witness.graphml [2021-11-23 03:45:32,133 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 03:45:32,134 INFO L158 Benchmark]: Toolchain (without parser) took 10661.80ms. Allocated memory was 88.1MB in the beginning and 167.8MB in the end (delta: 79.7MB). Free memory was 49.0MB in the beginning and 61.8MB in the end (delta: -12.7MB). Peak memory consumption was 65.8MB. Max. memory is 16.1GB. [2021-11-23 03:45:32,134 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 88.1MB. Free memory is still 66.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:45:32,135 INFO L158 Benchmark]: CACSL2BoogieTranslator took 750.22ms. Allocated memory was 88.1MB in the beginning and 111.1MB in the end (delta: 23.1MB). Free memory was 48.9MB in the beginning and 72.3MB in the end (delta: -23.5MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. [2021-11-23 03:45:32,135 INFO L158 Benchmark]: Boogie Procedure Inliner took 94.80ms. Allocated memory is still 111.1MB. Free memory was 72.3MB in the beginning and 67.0MB in the end (delta: 5.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 03:45:32,135 INFO L158 Benchmark]: Boogie Preprocessor took 108.68ms. Allocated memory is still 111.1MB. Free memory was 67.0MB in the beginning and 62.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 03:45:32,136 INFO L158 Benchmark]: RCFGBuilder took 1514.50ms. Allocated memory is still 111.1MB. Free memory was 62.7MB in the beginning and 63.9MB in the end (delta: -1.2MB). Peak memory consumption was 32.2MB. Max. memory is 16.1GB. [2021-11-23 03:45:32,136 INFO L158 Benchmark]: TraceAbstraction took 8008.35ms. Allocated memory was 111.1MB in the beginning and 167.8MB in the end (delta: 56.6MB). Free memory was 63.9MB in the beginning and 77.5MB in the end (delta: -13.6MB). Peak memory consumption was 84.4MB. Max. memory is 16.1GB. [2021-11-23 03:45:32,137 INFO L158 Benchmark]: Witness Printer took 168.09ms. Allocated memory is still 167.8MB. Free memory was 76.4MB in the beginning and 61.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-23 03:45:32,139 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 88.1MB. Free memory is still 66.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 750.22ms. Allocated memory was 88.1MB in the beginning and 111.1MB in the end (delta: 23.1MB). Free memory was 48.9MB in the beginning and 72.3MB in the end (delta: -23.5MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 94.80ms. Allocated memory is still 111.1MB. Free memory was 72.3MB in the beginning and 67.0MB in the end (delta: 5.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 108.68ms. Allocated memory is still 111.1MB. Free memory was 67.0MB in the beginning and 62.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1514.50ms. Allocated memory is still 111.1MB. Free memory was 62.7MB in the beginning and 63.9MB in the end (delta: -1.2MB). Peak memory consumption was 32.2MB. Max. memory is 16.1GB. * TraceAbstraction took 8008.35ms. Allocated memory was 111.1MB in the beginning and 167.8MB in the end (delta: 56.6MB). Free memory was 63.9MB in the beginning and 77.5MB in the end (delta: -13.6MB). Peak memory consumption was 84.4MB. Max. memory is 16.1GB. * Witness Printer took 168.09ms. Allocated memory is still 167.8MB. Free memory was 76.4MB in the beginning and 61.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 572]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.9s, OverallIterations: 11, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 4.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 771 SdHoareTripleChecker+Valid, 3.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 771 mSDsluCounter, 800 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 62 mSDsCounter, 669 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2703 IncrementalHoareTripleChecker+Invalid, 3372 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 669 mSolverCounterUnsat, 739 mSDtfsCounter, 2703 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 206 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2163occurred in iteration=10, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 11 MinimizatonAttempts, 400 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 67 NumberOfFragments, 139 HoareAnnotationTreeSize, 3 FomulaSimplifications, 686 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 3 FomulaSimplificationsInter, 698 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 1597 NumberOfCodeBlocks, 1597 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1585 ConstructedInterpolants, 0 QuantifiedInterpolants, 4057 SizeOfPredicates, 0 NumberOfNonLiveVariables, 362 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 12 InterpolantComputations, 11 PerfectInterpolantSequences, 938/996 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: (((((((a19 == 1 && a25 == 0) || ((a25 == 1 && a11 == 0) && a28 <= 10)) || ((10 <= a28 && a28 <= 10) && a19 == 1)) || ((9 <= a28 && a25 == 1) && a28 <= 9)) || (a11 == 0 && a25 == 0)) || ((a25 == 1 && 8 <= a17) && a28 <= 10)) || (a25 == 1 && a19 == 1)) || (a28 <= 10 && a25 == 0) - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((((((a19 == 1 && a25 == 0) || ((a25 == 1 && a11 == 0) && a28 <= 10)) || ((10 <= a28 && a28 <= 10) && a19 == 1)) || ((9 <= a28 && a25 == 1) && a28 <= 9)) || (a11 == 0 && a25 == 0)) || ((a25 == 1 && 8 <= a17) && a28 <= 10)) || (a25 == 1 && a19 == 1)) || (a28 <= 10 && a25 == 0) RESULT: Ultimate proved your program to be correct! [2021-11-23 03:45:32,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed933dea-de20-4dfb-8f36-5edf4ef82970/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE