./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem04_label34.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14a2d86f-666f-416f-90ca-391ddb593d54/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14a2d86f-666f-416f-90ca-391ddb593d54/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14a2d86f-666f-416f-90ca-391ddb593d54/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14a2d86f-666f-416f-90ca-391ddb593d54/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem04_label34.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14a2d86f-666f-416f-90ca-391ddb593d54/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14a2d86f-666f-416f-90ca-391ddb593d54/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6000afea4dd0404b9ff958778867dfa6300a2acabdbe98e6a467db1851bf3ceb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:47:59,866 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:47:59,868 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:47:59,920 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:47:59,921 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:47:59,922 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:47:59,924 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:47:59,927 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:47:59,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:47:59,931 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:47:59,933 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:47:59,934 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:47:59,935 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:47:59,937 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:47:59,939 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:47:59,940 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:47:59,942 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:47:59,943 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:47:59,946 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:47:59,948 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:47:59,951 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:47:59,953 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:47:59,954 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:47:59,956 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:47:59,960 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:47:59,961 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:47:59,961 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:47:59,963 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:47:59,963 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:47:59,965 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:47:59,966 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:47:59,967 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:47:59,968 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:47:59,969 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:47:59,971 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:47:59,971 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:47:59,973 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:47:59,973 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:47:59,974 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:47:59,975 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:47:59,976 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:47:59,981 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14a2d86f-666f-416f-90ca-391ddb593d54/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-20 23:48:00,032 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:48:00,032 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:48:00,033 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:48:00,033 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:48:00,035 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:48:00,035 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:48:00,035 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:48:00,035 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:48:00,036 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:48:00,036 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:48:00,037 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:48:00,038 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:48:00,038 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:48:00,038 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:48:00,038 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:48:00,039 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:48:00,039 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:48:00,039 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:48:00,040 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:48:00,041 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 23:48:00,041 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:48:00,041 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 23:48:00,041 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:48:00,042 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:48:00,042 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:48:00,042 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:48:00,045 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 23:48:00,045 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:48:00,045 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:48:00,046 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:48:00,046 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:48:00,046 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:48:00,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:48:00,047 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:48:00,048 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:48:00,048 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:48:00,048 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:48:00,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:48:00,049 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:48:00,049 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:48:00,049 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:48:00,050 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_14a2d86f-666f-416f-90ca-391ddb593d54/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14a2d86f-666f-416f-90ca-391ddb593d54/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6000afea4dd0404b9ff958778867dfa6300a2acabdbe98e6a467db1851bf3ceb [2021-11-20 23:48:00,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:48:00,377 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:48:00,380 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:48:00,382 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:48:00,383 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:48:00,384 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14a2d86f-666f-416f-90ca-391ddb593d54/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/eca-rers2012/Problem04_label34.c [2021-11-20 23:48:00,457 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14a2d86f-666f-416f-90ca-391ddb593d54/bin/utaipan-TEXQjIfE4P/data/35d34c536/288677772af149ffb5f2b52f84e46f22/FLAG1520b6d39 [2021-11-20 23:48:01,472 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:48:01,473 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14a2d86f-666f-416f-90ca-391ddb593d54/sv-benchmarks/c/eca-rers2012/Problem04_label34.c [2021-11-20 23:48:01,514 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14a2d86f-666f-416f-90ca-391ddb593d54/bin/utaipan-TEXQjIfE4P/data/35d34c536/288677772af149ffb5f2b52f84e46f22/FLAG1520b6d39 [2021-11-20 23:48:01,824 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14a2d86f-666f-416f-90ca-391ddb593d54/bin/utaipan-TEXQjIfE4P/data/35d34c536/288677772af149ffb5f2b52f84e46f22 [2021-11-20 23:48:01,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:48:01,830 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:48:01,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:48:01,837 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:48:01,840 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:48:01,841 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:48:01" (1/1) ... [2021-11-20 23:48:01,842 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f6a3ab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:48:01, skipping insertion in model container [2021-11-20 23:48:01,842 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:48:01" (1/1) ... [2021-11-20 23:48:01,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:48:02,016 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:48:03,767 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_14a2d86f-666f-416f-90ca-391ddb593d54/sv-benchmarks/c/eca-rers2012/Problem04_label34.c[180736,180749] [2021-11-20 23:48:03,796 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:48:03,809 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:48:04,724 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_14a2d86f-666f-416f-90ca-391ddb593d54/sv-benchmarks/c/eca-rers2012/Problem04_label34.c[180736,180749] [2021-11-20 23:48:04,734 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:48:04,769 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:48:04,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:48:04 WrapperNode [2021-11-20 23:48:04,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:48:04,771 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:48:04,771 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:48:04,771 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:48:04,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:48:04" (1/1) ... [2021-11-20 23:48:04,849 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:48:04" (1/1) ... [2021-11-20 23:48:05,139 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5572 [2021-11-20 23:48:05,140 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:48:05,141 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:48:05,141 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:48:05,141 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:48:05,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:48:04" (1/1) ... [2021-11-20 23:48:05,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:48:04" (1/1) ... [2021-11-20 23:48:05,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:48:04" (1/1) ... [2021-11-20 23:48:05,174 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:48:04" (1/1) ... [2021-11-20 23:48:05,409 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:48:04" (1/1) ... [2021-11-20 23:48:05,455 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:48:04" (1/1) ... [2021-11-20 23:48:05,504 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:48:04" (1/1) ... [2021-11-20 23:48:05,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:48:05,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:48:05,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:48:05,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:48:05,555 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:48:04" (1/1) ... [2021-11-20 23:48:05,563 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:48:05,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14a2d86f-666f-416f-90ca-391ddb593d54/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:48:05,593 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14a2d86f-666f-416f-90ca-391ddb593d54/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:48:05,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14a2d86f-666f-416f-90ca-391ddb593d54/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:48:05,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:48:05,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:48:05,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:48:05,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:48:05,840 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:48:05,842 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:48:10,772 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:48:11,295 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:48:11,296 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-20 23:48:11,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:48:11 BoogieIcfgContainer [2021-11-20 23:48:11,301 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:48:11,304 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:48:11,304 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:48:11,308 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:48:11,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:48:01" (1/3) ... [2021-11-20 23:48:11,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e709daa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:48:11, skipping insertion in model container [2021-11-20 23:48:11,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:48:04" (2/3) ... [2021-11-20 23:48:11,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e709daa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:48:11, skipping insertion in model container [2021-11-20 23:48:11,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:48:11" (3/3) ... [2021-11-20 23:48:11,313 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label34.c [2021-11-20 23:48:11,319 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:48:11,320 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 23:48:11,389 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:48:11,398 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 23:48:11,399 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 23:48:11,442 INFO L276 IsEmpty]: Start isEmpty. Operand has 763 states, 761 states have (on average 1.9908015768725362) internal successors, (1515), 762 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:48:11,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 756 [2021-11-20 23:48:11,507 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:48:11,508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:48:11,509 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:48:11,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:48:11,517 INFO L85 PathProgramCache]: Analyzing trace with hash 2067698765, now seen corresponding path program 1 times [2021-11-20 23:48:11,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:48:11,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384225545] [2021-11-20 23:48:11,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:48:11,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:48:12,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:48:14,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:48:14,460 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:48:14,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384225545] [2021-11-20 23:48:14,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384225545] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:48:14,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:48:14,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 23:48:14,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904747619] [2021-11-20 23:48:14,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:48:14,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 23:48:14,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:48:14,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 23:48:14,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-11-20 23:48:14,544 INFO L87 Difference]: Start difference. First operand has 763 states, 761 states have (on average 1.9908015768725362) internal successors, (1515), 762 states have internal predecessors, (1515), 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 12 states, 12 states have (on average 62.916666666666664) internal successors, (755), 11 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:48:24,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:48:24,168 INFO L93 Difference]: Finished difference Result 2246 states and 4468 transitions. [2021-11-20 23:48:24,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 23:48:24,172 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 62.916666666666664) internal successors, (755), 11 states have internal predecessors, (755), 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 755 [2021-11-20 23:48:24,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:48:24,211 INFO L225 Difference]: With dead ends: 2246 [2021-11-20 23:48:24,211 INFO L226 Difference]: Without dead ends: 1480 [2021-11-20 23:48:24,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=151, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:48:24,223 INFO L933 BasicCegarLoop]: 787 mSDtfsCounter, 1333 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 11379 mSolverCounterSat, 713 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1333 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 12092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 713 IncrementalHoareTripleChecker+Valid, 11379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:48:24,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1333 Valid, 843 Invalid, 12092 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [713 Valid, 11379 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2021-11-20 23:48:24,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2021-11-20 23:48:24,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1480. [2021-11-20 23:48:24,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1480 states, 1479 states have (on average 1.511156186612576) internal successors, (2235), 1479 states have internal predecessors, (2235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:48:24,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1480 states to 1480 states and 2235 transitions. [2021-11-20 23:48:24,385 INFO L78 Accepts]: Start accepts. Automaton has 1480 states and 2235 transitions. Word has length 755 [2021-11-20 23:48:24,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:48:24,389 INFO L470 AbstractCegarLoop]: Abstraction has 1480 states and 2235 transitions. [2021-11-20 23:48:24,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 62.916666666666664) internal successors, (755), 11 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:48:24,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1480 states and 2235 transitions. [2021-11-20 23:48:24,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 771 [2021-11-20 23:48:24,424 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:48:24,425 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:48:24,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:48:24,427 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:48:24,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:48:24,432 INFO L85 PathProgramCache]: Analyzing trace with hash 541651704, now seen corresponding path program 1 times [2021-11-20 23:48:24,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:48:24,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553629797] [2021-11-20 23:48:24,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:48:24,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:48:24,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:48:26,484 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:48:26,485 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:48:26,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553629797] [2021-11-20 23:48:26,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553629797] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:48:26,487 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:48:26,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-20 23:48:26,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581671783] [2021-11-20 23:48:26,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:48:26,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 23:48:26,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:48:26,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 23:48:26,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:48:26,496 INFO L87 Difference]: Start difference. First operand 1480 states and 2235 transitions. Second operand has 13 states, 13 states have (on average 59.23076923076923) internal successors, (770), 12 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:48:34,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:48:34,274 INFO L93 Difference]: Finished difference Result 3684 states and 6623 transitions. [2021-11-20 23:48:34,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 23:48:34,275 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 59.23076923076923) internal successors, (770), 12 states have internal predecessors, (770), 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 770 [2021-11-20 23:48:34,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:48:34,297 INFO L225 Difference]: With dead ends: 3684 [2021-11-20 23:48:34,298 INFO L226 Difference]: Without dead ends: 2924 [2021-11-20 23:48:34,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=105, Invalid=167, Unknown=0, NotChecked=0, Total=272 [2021-11-20 23:48:34,302 INFO L933 BasicCegarLoop]: 785 mSDtfsCounter, 3002 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 7927 mSolverCounterSat, 1408 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3002 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 9335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1408 IncrementalHoareTripleChecker+Valid, 7927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:48:34,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3002 Valid, 823 Invalid, 9335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1408 Valid, 7927 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2021-11-20 23:48:34,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2021-11-20 23:48:34,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 2924. [2021-11-20 23:48:34,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2923 states have (on average 1.2706123845364352) internal successors, (3714), 2923 states have internal predecessors, (3714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:48:34,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 3714 transitions. [2021-11-20 23:48:34,388 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 3714 transitions. Word has length 770 [2021-11-20 23:48:34,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:48:34,391 INFO L470 AbstractCegarLoop]: Abstraction has 2924 states and 3714 transitions. [2021-11-20 23:48:34,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 59.23076923076923) internal successors, (770), 12 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:48:34,392 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 3714 transitions. [2021-11-20 23:48:34,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 778 [2021-11-20 23:48:34,431 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:48:34,432 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:48:34,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 23:48:34,433 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:48:34,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:48:34,434 INFO L85 PathProgramCache]: Analyzing trace with hash 906226650, now seen corresponding path program 1 times [2021-11-20 23:48:34,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:48:34,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188049542] [2021-11-20 23:48:34,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:48:34,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:48:34,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:48:35,149 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-20 23:48:35,150 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:48:35,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188049542] [2021-11-20 23:48:35,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188049542] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:48:35,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:48:35,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 23:48:35,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040476584] [2021-11-20 23:48:35,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:48:35,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:48:35,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:48:35,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:48:35,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:48:35,156 INFO L87 Difference]: Start difference. First operand 2924 states and 3714 transitions. Second operand has 3 states, 3 states have (on average 252.33333333333334) internal successors, (757), 2 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:48:38,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:48:38,009 INFO L93 Difference]: Finished difference Result 5886 states and 8212 transitions. [2021-11-20 23:48:38,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:48:38,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 252.33333333333334) internal successors, (757), 2 states have internal predecessors, (757), 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 777 [2021-11-20 23:48:38,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:48:38,037 INFO L225 Difference]: With dead ends: 5886 [2021-11-20 23:48:38,038 INFO L226 Difference]: Without dead ends: 3682 [2021-11-20 23:48:38,042 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 [2021-11-20 23:48:38,044 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 119 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2667 mSolverCounterSat, 380 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 3047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 380 IncrementalHoareTripleChecker+Valid, 2667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:48:38,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 186 Invalid, 3047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [380 Valid, 2667 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-20 23:48:38,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3682 states. [2021-11-20 23:48:38,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3682 to 3682. [2021-11-20 23:48:38,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3682 states, 3681 states have (on average 1.3729964683509917) internal successors, (5054), 3681 states have internal predecessors, (5054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:48:38,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3682 states to 3682 states and 5054 transitions. [2021-11-20 23:48:38,157 INFO L78 Accepts]: Start accepts. Automaton has 3682 states and 5054 transitions. Word has length 777 [2021-11-20 23:48:38,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:48:38,161 INFO L470 AbstractCegarLoop]: Abstraction has 3682 states and 5054 transitions. [2021-11-20 23:48:38,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 252.33333333333334) internal successors, (757), 2 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:48:38,162 INFO L276 IsEmpty]: Start isEmpty. Operand 3682 states and 5054 transitions. [2021-11-20 23:48:38,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 782 [2021-11-20 23:48:38,176 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:48:38,177 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:48:38,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 23:48:38,178 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:48:38,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:48:38,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1214618356, now seen corresponding path program 1 times [2021-11-20 23:48:38,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:48:38,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409828960] [2021-11-20 23:48:38,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:48:38,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:48:38,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:48:38,458 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:48:38,459 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:48:38,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409828960] [2021-11-20 23:48:38,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409828960] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:48:38,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:48:38,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:48:38,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458878440] [2021-11-20 23:48:38,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:48:38,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:48:38,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:48:38,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:48:38,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:48:38,464 INFO L87 Difference]: Start difference. First operand 3682 states and 5054 transitions. Second operand has 4 states, 4 states have (on average 195.25) internal successors, (781), 3 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:48:43,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:48:43,480 INFO L93 Difference]: Finished difference Result 10434 states and 15869 transitions. [2021-11-20 23:48:43,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:48:43,496 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 195.25) internal successors, (781), 3 states have internal predecessors, (781), 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 781 [2021-11-20 23:48:43,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:48:43,546 INFO L225 Difference]: With dead ends: 10434 [2021-11-20 23:48:43,546 INFO L226 Difference]: Without dead ends: 7472 [2021-11-20 23:48:43,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:48:43,553 INFO L933 BasicCegarLoop]: 320 mSDtfsCounter, 1525 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 5236 mSolverCounterSat, 864 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 6100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 864 IncrementalHoareTripleChecker+Valid, 5236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:48:43,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1525 Valid, 336 Invalid, 6100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [864 Valid, 5236 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2021-11-20 23:48:43,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7472 states. [2021-11-20 23:48:43,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7472 to 6714. [2021-11-20 23:48:43,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6714 states, 6713 states have (on average 1.4433189334127812) internal successors, (9689), 6713 states have internal predecessors, (9689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:48:43,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6714 states to 6714 states and 9689 transitions. [2021-11-20 23:48:43,749 INFO L78 Accepts]: Start accepts. Automaton has 6714 states and 9689 transitions. Word has length 781 [2021-11-20 23:48:43,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:48:43,750 INFO L470 AbstractCegarLoop]: Abstraction has 6714 states and 9689 transitions. [2021-11-20 23:48:43,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 195.25) internal successors, (781), 3 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:48:43,751 INFO L276 IsEmpty]: Start isEmpty. Operand 6714 states and 9689 transitions. [2021-11-20 23:48:43,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 784 [2021-11-20 23:48:43,776 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:48:43,777 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:48:43,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 23:48:43,778 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:48:43,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:48:43,779 INFO L85 PathProgramCache]: Analyzing trace with hash 117766194, now seen corresponding path program 1 times [2021-11-20 23:48:43,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:48:43,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185858695] [2021-11-20 23:48:43,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:48:43,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:48:43,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:48:44,720 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 23:48:44,720 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:48:44,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185858695] [2021-11-20 23:48:44,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185858695] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:48:44,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:48:44,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:48:44,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936065531] [2021-11-20 23:48:44,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:48:44,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:48:44,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:48:44,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:48:44,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:48:44,726 INFO L87 Difference]: Start difference. First operand 6714 states and 9689 transitions. Second operand has 4 states, 4 states have (on average 193.0) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:48:50,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:48:50,190 INFO L93 Difference]: Finished difference Result 18012 states and 27643 transitions. [2021-11-20 23:48:50,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:48:50,197 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 193.0) internal successors, (772), 3 states have internal predecessors, (772), 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 783 [2021-11-20 23:48:50,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:48:50,259 INFO L225 Difference]: With dead ends: 18012 [2021-11-20 23:48:50,260 INFO L226 Difference]: Without dead ends: 11262 [2021-11-20 23:48:50,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:48:50,270 INFO L933 BasicCegarLoop]: 715 mSDtfsCounter, 783 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 3379 mSolverCounterSat, 2229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 5608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2229 IncrementalHoareTripleChecker+Valid, 3379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:48:50,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [783 Valid, 728 Invalid, 5608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2229 Valid, 3379 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-11-20 23:48:50,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11262 states. [2021-11-20 23:48:50,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11262 to 8988. [2021-11-20 23:48:50,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8988 states, 8987 states have (on average 1.1245131857126962) internal successors, (10106), 8987 states have internal predecessors, (10106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:48:50,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8988 states to 8988 states and 10106 transitions. [2021-11-20 23:48:50,510 INFO L78 Accepts]: Start accepts. Automaton has 8988 states and 10106 transitions. Word has length 783 [2021-11-20 23:48:50,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:48:50,511 INFO L470 AbstractCegarLoop]: Abstraction has 8988 states and 10106 transitions. [2021-11-20 23:48:50,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 193.0) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:48:50,512 INFO L276 IsEmpty]: Start isEmpty. Operand 8988 states and 10106 transitions. [2021-11-20 23:48:50,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 859 [2021-11-20 23:48:50,539 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:48:50,540 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:48:50,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 23:48:50,541 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:48:50,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:48:50,542 INFO L85 PathProgramCache]: Analyzing trace with hash -2139075104, now seen corresponding path program 1 times [2021-11-20 23:48:50,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:48:50,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724900987] [2021-11-20 23:48:50,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:48:50,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:48:50,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:48:50,880 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-20 23:48:50,880 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:48:50,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724900987] [2021-11-20 23:48:50,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724900987] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:48:50,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:48:50,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 23:48:50,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688106405] [2021-11-20 23:48:50,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:48:50,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:48:50,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:48:50,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:48:50,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:48:50,896 INFO L87 Difference]: Start difference. First operand 8988 states and 10106 transitions. Second operand has 3 states, 3 states have (on average 276.0) internal successors, (828), 2 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:48:52,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:48:52,968 INFO L93 Difference]: Finished difference Result 22562 states and 25417 transitions. [2021-11-20 23:48:52,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:48:52,970 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 276.0) internal successors, (828), 2 states have internal predecessors, (828), 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 858 [2021-11-20 23:48:52,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:48:53,002 INFO L225 Difference]: With dead ends: 22562 [2021-11-20 23:48:53,002 INFO L226 Difference]: Without dead ends: 14294 [2021-11-20 23:48:53,015 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 [2021-11-20 23:48:53,017 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 737 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1774 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 2027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 1774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:48:53,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [737 Valid, 87 Invalid, 2027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 1774 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-20 23:48:53,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14294 states. [2021-11-20 23:48:53,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14294 to 14294. [2021-11-20 23:48:53,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14294 states, 14293 states have (on average 1.0960610088854683) internal successors, (15666), 14293 states have internal predecessors, (15666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:48:53,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14294 states to 14294 states and 15666 transitions. [2021-11-20 23:48:53,301 INFO L78 Accepts]: Start accepts. Automaton has 14294 states and 15666 transitions. Word has length 858 [2021-11-20 23:48:53,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:48:53,302 INFO L470 AbstractCegarLoop]: Abstraction has 14294 states and 15666 transitions. [2021-11-20 23:48:53,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 276.0) internal successors, (828), 2 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:48:53,303 INFO L276 IsEmpty]: Start isEmpty. Operand 14294 states and 15666 transitions. [2021-11-20 23:48:53,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 932 [2021-11-20 23:48:53,422 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:48:53,423 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:48:53,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 23:48:53,424 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:48:53,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:48:53,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1800827272, now seen corresponding path program 1 times [2021-11-20 23:48:53,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:48:53,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563061471] [2021-11-20 23:48:53,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:48:53,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:48:53,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:48:53,896 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 235 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-20 23:48:53,896 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:48:53,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563061471] [2021-11-20 23:48:53,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563061471] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:48:53,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:48:53,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:48:53,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236890452] [2021-11-20 23:48:53,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:48:53,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:48:53,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:48:53,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:48:53,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:48:53,902 INFO L87 Difference]: Start difference. First operand 14294 states and 15666 transitions. Second operand has 3 states, 3 states have (on average 298.3333333333333) internal successors, (895), 3 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:48:56,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:48:56,126 INFO L93 Difference]: Finished difference Result 39240 states and 43323 transitions. [2021-11-20 23:48:56,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:48:56,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 298.3333333333333) internal successors, (895), 3 states have internal predecessors, (895), 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 931 [2021-11-20 23:48:56,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:48:56,185 INFO L225 Difference]: With dead ends: 39240 [2021-11-20 23:48:56,185 INFO L226 Difference]: Without dead ends: 25666 [2021-11-20 23:48:56,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:48:56,206 INFO L933 BasicCegarLoop]: 859 mSDtfsCounter, 780 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1874 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 2064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 1874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:48:56,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [780 Valid, 866 Invalid, 2064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 1874 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-20 23:48:56,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25666 states. [2021-11-20 23:48:56,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25666 to 25664. [2021-11-20 23:48:56,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25664 states, 25663 states have (on average 1.0951174843159412) internal successors, (28104), 25663 states have internal predecessors, (28104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:48:56,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25664 states to 25664 states and 28104 transitions. [2021-11-20 23:48:56,697 INFO L78 Accepts]: Start accepts. Automaton has 25664 states and 28104 transitions. Word has length 931 [2021-11-20 23:48:56,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:48:56,698 INFO L470 AbstractCegarLoop]: Abstraction has 25664 states and 28104 transitions. [2021-11-20 23:48:56,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 298.3333333333333) internal successors, (895), 3 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:48:56,699 INFO L276 IsEmpty]: Start isEmpty. Operand 25664 states and 28104 transitions. [2021-11-20 23:48:56,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 962 [2021-11-20 23:48:56,761 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:48:56,763 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:48:56,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 23:48:56,763 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:48:56,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:48:56,765 INFO L85 PathProgramCache]: Analyzing trace with hash -653749027, now seen corresponding path program 1 times [2021-11-20 23:48:56,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:48:56,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491005150] [2021-11-20 23:48:56,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:48:56,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:48:56,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:48:57,257 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 243 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-20 23:48:57,258 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:48:57,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491005150] [2021-11-20 23:48:57,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491005150] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:48:57,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:48:57,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 23:48:57,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402221150] [2021-11-20 23:48:57,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:48:57,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:48:57,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:48:57,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:48:57,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:48:57,262 INFO L87 Difference]: Start difference. First operand 25664 states and 28104 transitions. Second operand has 3 states, 3 states have (on average 293.3333333333333) internal successors, (880), 2 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:48:59,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:48:59,775 INFO L93 Difference]: Finished difference Result 63494 states and 69526 transitions. [2021-11-20 23:48:59,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:48:59,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 293.3333333333333) internal successors, (880), 2 states have internal predecessors, (880), 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 961 [2021-11-20 23:48:59,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:48:59,843 INFO L225 Difference]: With dead ends: 63494 [2021-11-20 23:48:59,843 INFO L226 Difference]: Without dead ends: 38550 [2021-11-20 23:48:59,877 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 [2021-11-20 23:48:59,878 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 712 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1736 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 1995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 1736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:48:59,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [712 Valid, 138 Invalid, 1995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 1736 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-20 23:48:59,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38550 states. [2021-11-20 23:49:00,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38550 to 37792. [2021-11-20 23:49:00,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37792 states, 37791 states have (on average 1.0627927284274032) internal successors, (40164), 37791 states have internal predecessors, (40164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:49:00,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37792 states to 37792 states and 40164 transitions. [2021-11-20 23:49:00,504 INFO L78 Accepts]: Start accepts. Automaton has 37792 states and 40164 transitions. Word has length 961 [2021-11-20 23:49:00,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:49:00,507 INFO L470 AbstractCegarLoop]: Abstraction has 37792 states and 40164 transitions. [2021-11-20 23:49:00,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 293.3333333333333) internal successors, (880), 2 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:49:00,508 INFO L276 IsEmpty]: Start isEmpty. Operand 37792 states and 40164 transitions. [2021-11-20 23:49:00,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1036 [2021-11-20 23:49:00,698 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:49:00,702 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:49:00,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 23:49:00,704 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:49:00,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:49:00,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1574840168, now seen corresponding path program 1 times [2021-11-20 23:49:00,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:49:00,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806915466] [2021-11-20 23:49:00,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:49:00,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:49:00,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:49:01,113 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 465 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-20 23:49:01,113 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:49:01,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806915466] [2021-11-20 23:49:01,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806915466] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:49:01,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:49:01,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:49:01,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231544445] [2021-11-20 23:49:01,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:49:01,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:49:01,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:49:01,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:49:01,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:49:01,118 INFO L87 Difference]: Start difference. First operand 37792 states and 40164 transitions. Second operand has 3 states, 3 states have (on average 328.0) internal successors, (984), 3 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:49:03,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:49:03,308 INFO L93 Difference]: Finished difference Result 75622 states and 80372 transitions. [2021-11-20 23:49:03,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:49:03,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 328.0) internal successors, (984), 3 states have internal predecessors, (984), 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 1035 [2021-11-20 23:49:03,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:49:03,358 INFO L225 Difference]: With dead ends: 75622 [2021-11-20 23:49:03,358 INFO L226 Difference]: Without dead ends: 37792 [2021-11-20 23:49:03,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:49:03,383 INFO L933 BasicCegarLoop]: 921 mSDtfsCounter, 688 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1763 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 1918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:49:03,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [688 Valid, 928 Invalid, 1918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1763 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-20 23:49:03,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37792 states. [2021-11-20 23:49:04,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37792 to 37792. [2021-11-20 23:49:04,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37792 states, 37791 states have (on average 1.0554100182583155) internal successors, (39885), 37791 states have internal predecessors, (39885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:49:04,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37792 states to 37792 states and 39885 transitions. [2021-11-20 23:49:04,147 INFO L78 Accepts]: Start accepts. Automaton has 37792 states and 39885 transitions. Word has length 1035 [2021-11-20 23:49:04,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:49:04,148 INFO L470 AbstractCegarLoop]: Abstraction has 37792 states and 39885 transitions. [2021-11-20 23:49:04,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 328.0) internal successors, (984), 3 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:49:04,149 INFO L276 IsEmpty]: Start isEmpty. Operand 37792 states and 39885 transitions. [2021-11-20 23:49:04,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1040 [2021-11-20 23:49:04,204 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:49:04,206 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:49:04,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 23:49:04,206 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:49:04,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:49:04,208 INFO L85 PathProgramCache]: Analyzing trace with hash 242755339, now seen corresponding path program 1 times [2021-11-20 23:49:04,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:49:04,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004832872] [2021-11-20 23:49:04,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:49:04,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:49:04,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:49:04,609 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 342 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-11-20 23:49:04,610 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:49:04,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004832872] [2021-11-20 23:49:04,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004832872] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:49:04,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:49:04,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 23:49:04,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027924716] [2021-11-20 23:49:04,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:49:04,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:49:04,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:49:04,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:49:04,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:49:04,615 INFO L87 Difference]: Start difference. First operand 37792 states and 39885 transitions. Second operand has 3 states, 3 states have (on average 293.6666666666667) internal successors, (881), 2 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:49:07,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:49:07,002 INFO L93 Difference]: Finished difference Result 93814 states and 99633 transitions. [2021-11-20 23:49:07,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:49:07,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 293.6666666666667) internal successors, (881), 2 states have internal predecessors, (881), 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 1039 [2021-11-20 23:49:07,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:49:07,256 INFO L225 Difference]: With dead ends: 93814 [2021-11-20 23:49:07,257 INFO L226 Difference]: Without dead ends: 56742 [2021-11-20 23:49:07,275 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 [2021-11-20 23:49:07,276 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 705 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1737 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 2002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 1737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:49:07,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [705 Valid, 179 Invalid, 2002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 1737 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-20 23:49:07,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56742 states. [2021-11-20 23:49:08,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56742 to 52952. [2021-11-20 23:49:08,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52952 states, 52951 states have (on average 1.0506128307302978) internal successors, (55631), 52951 states have internal predecessors, (55631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:49:08,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52952 states to 52952 states and 55631 transitions. [2021-11-20 23:49:08,461 INFO L78 Accepts]: Start accepts. Automaton has 52952 states and 55631 transitions. Word has length 1039 [2021-11-20 23:49:08,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:49:08,462 INFO L470 AbstractCegarLoop]: Abstraction has 52952 states and 55631 transitions. [2021-11-20 23:49:08,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 293.6666666666667) internal successors, (881), 2 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:49:08,463 INFO L276 IsEmpty]: Start isEmpty. Operand 52952 states and 55631 transitions. [2021-11-20 23:49:08,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1080 [2021-11-20 23:49:08,519 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:49:08,521 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:49:08,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 23:49:08,522 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:49:08,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:49:08,524 INFO L85 PathProgramCache]: Analyzing trace with hash -337207174, now seen corresponding path program 1 times [2021-11-20 23:49:08,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:49:08,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933264568] [2021-11-20 23:49:08,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:49:08,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:49:08,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:49:09,339 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 409 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2021-11-20 23:49:09,339 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:49:09,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933264568] [2021-11-20 23:49:09,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933264568] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:49:09,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:49:09,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:49:09,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617562288] [2021-11-20 23:49:09,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:49:09,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:49:09,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:49:09,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:49:09,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:49:09,345 INFO L87 Difference]: Start difference. First operand 52952 states and 55631 transitions. Second operand has 3 states, 3 states have (on average 301.3333333333333) internal successors, (904), 3 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:49:11,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:49:11,989 INFO L93 Difference]: Finished difference Result 123376 states and 130354 transitions. [2021-11-20 23:49:11,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:49:11,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 301.3333333333333) internal successors, (904), 3 states have internal predecessors, (904), 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 1079 [2021-11-20 23:49:11,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:49:12,057 INFO L225 Difference]: With dead ends: 123376 [2021-11-20 23:49:12,057 INFO L226 Difference]: Without dead ends: 71144 [2021-11-20 23:49:12,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:49:12,078 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 756 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1777 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 2021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 1777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:49:12,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [756 Valid, 202 Invalid, 2021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 1777 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-20 23:49:12,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71144 states. [2021-11-20 23:49:13,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71144 to 71144. [2021-11-20 23:49:13,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71144 states, 71143 states have (on average 1.0458513135515792) internal successors, (74405), 71143 states have internal predecessors, (74405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:49:13,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71144 states to 71144 states and 74405 transitions. [2021-11-20 23:49:13,549 INFO L78 Accepts]: Start accepts. Automaton has 71144 states and 74405 transitions. Word has length 1079 [2021-11-20 23:49:13,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:49:13,550 INFO L470 AbstractCegarLoop]: Abstraction has 71144 states and 74405 transitions. [2021-11-20 23:49:13,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 301.3333333333333) internal successors, (904), 3 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:49:13,550 INFO L276 IsEmpty]: Start isEmpty. Operand 71144 states and 74405 transitions. [2021-11-20 23:49:13,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1198 [2021-11-20 23:49:13,675 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:49:13,692 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:49:13,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 23:49:13,693 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:49:13,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:49:13,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1694602828, now seen corresponding path program 1 times [2021-11-20 23:49:13,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:49:13,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902728021] [2021-11-20 23:49:13,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:49:13,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:49:14,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:49:14,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1286 backedges. 904 proven. 0 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2021-11-20 23:49:14,355 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:49:14,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902728021] [2021-11-20 23:49:14,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902728021] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:49:14,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:49:14,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:49:14,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18256944] [2021-11-20 23:49:14,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:49:14,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:49:14,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:49:14,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:49:14,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:49:14,360 INFO L87 Difference]: Start difference. First operand 71144 states and 74405 transitions. Second operand has 3 states, 3 states have (on average 313.6666666666667) internal successors, (941), 3 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:49:17,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:49:17,032 INFO L93 Difference]: Finished difference Result 139294 states and 145745 transitions. [2021-11-20 23:49:17,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:49:17,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 313.6666666666667) internal successors, (941), 3 states have internal predecessors, (941), 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 1197 [2021-11-20 23:49:17,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:49:17,273 INFO L225 Difference]: With dead ends: 139294 [2021-11-20 23:49:17,273 INFO L226 Difference]: Without dead ends: 68870 [2021-11-20 23:49:17,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:49:17,304 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 743 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1824 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 2009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 1824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:49:17,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [743 Valid, 156 Invalid, 2009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 1824 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-20 23:49:17,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68870 states. [2021-11-20 23:49:18,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68870 to 66596. [2021-11-20 23:49:18,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66596 states, 66595 states have (on average 1.041714843456716) internal successors, (69373), 66595 states have internal predecessors, (69373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:49:18,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66596 states to 66596 states and 69373 transitions. [2021-11-20 23:49:18,151 INFO L78 Accepts]: Start accepts. Automaton has 66596 states and 69373 transitions. Word has length 1197 [2021-11-20 23:49:18,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:49:18,152 INFO L470 AbstractCegarLoop]: Abstraction has 66596 states and 69373 transitions. [2021-11-20 23:49:18,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 313.6666666666667) internal successors, (941), 3 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:49:18,152 INFO L276 IsEmpty]: Start isEmpty. Operand 66596 states and 69373 transitions. [2021-11-20 23:49:18,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1407 [2021-11-20 23:49:18,199 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:49:18,200 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:49:18,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-20 23:49:18,201 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:49:18,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:49:18,202 INFO L85 PathProgramCache]: Analyzing trace with hash -85006606, now seen corresponding path program 1 times [2021-11-20 23:49:18,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:49:18,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263797832] [2021-11-20 23:49:18,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:49:18,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:49:18,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:49:19,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1409 backedges. 1096 proven. 0 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2021-11-20 23:49:19,208 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:49:19,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263797832] [2021-11-20 23:49:19,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263797832] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:49:19,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:49:19,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:49:19,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239565124] [2021-11-20 23:49:19,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:49:19,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:49:19,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:49:19,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:49:19,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:49:19,213 INFO L87 Difference]: Start difference. First operand 66596 states and 69373 transitions. Second operand has 3 states, 3 states have (on average 398.0) internal successors, (1194), 3 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:49:21,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:49:21,644 INFO L93 Difference]: Finished difference Result 139294 states and 144967 transitions. [2021-11-20 23:49:21,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:49:21,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 398.0) internal successors, (1194), 3 states have internal predecessors, (1194), 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 1406 [2021-11-20 23:49:21,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:49:21,711 INFO L225 Difference]: With dead ends: 139294 [2021-11-20 23:49:21,712 INFO L226 Difference]: Without dead ends: 66596 [2021-11-20 23:49:21,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:49:21,745 INFO L933 BasicCegarLoop]: 971 mSDtfsCounter, 475 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1720 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 1872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 1720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:49:21,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [475 Valid, 977 Invalid, 1872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 1720 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-20 23:49:21,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66596 states. [2021-11-20 23:49:22,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66596 to 64322. [2021-11-20 23:49:22,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64322 states, 64321 states have (on average 1.034063525131761) internal successors, (66512), 64321 states have internal predecessors, (66512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:49:22,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64322 states to 64322 states and 66512 transitions. [2021-11-20 23:49:22,672 INFO L78 Accepts]: Start accepts. Automaton has 64322 states and 66512 transitions. Word has length 1406 [2021-11-20 23:49:22,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:49:22,673 INFO L470 AbstractCegarLoop]: Abstraction has 64322 states and 66512 transitions. [2021-11-20 23:49:22,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 398.0) internal successors, (1194), 3 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:49:22,674 INFO L276 IsEmpty]: Start isEmpty. Operand 64322 states and 66512 transitions. [2021-11-20 23:49:22,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1433 [2021-11-20 23:49:22,719 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:49:22,721 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:49:22,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-20 23:49:22,721 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:49:22,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:49:22,722 INFO L85 PathProgramCache]: Analyzing trace with hash -707271114, now seen corresponding path program 1 times [2021-11-20 23:49:22,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:49:22,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838702094] [2021-11-20 23:49:22,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:49:22,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:49:23,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:49:23,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 1298 proven. 89 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2021-11-20 23:49:23,949 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:49:23,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838702094] [2021-11-20 23:49:23,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838702094] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:49:23,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295559320] [2021-11-20 23:49:23,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:49:23,951 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:49:23,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14a2d86f-666f-416f-90ca-391ddb593d54/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:49:23,955 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14a2d86f-666f-416f-90ca-391ddb593d54/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:49:23,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14a2d86f-666f-416f-90ca-391ddb593d54/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 23:49:24,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:49:24,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 1804 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 23:49:24,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:49:28,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 1022 proven. 0 refuted. 0 times theorem prover too weak. 661 trivial. 0 not checked. [2021-11-20 23:49:28,422 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:49:28,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295559320] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:49:28,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 23:49:28,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2021-11-20 23:49:28,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413864692] [2021-11-20 23:49:28,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:49:28,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:49:28,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:49:28,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:49:28,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:49:28,428 INFO L87 Difference]: Start difference. First operand 64322 states and 66512 transitions. Second operand has 3 states, 3 states have (on average 329.3333333333333) internal successors, (988), 3 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:49:30,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:49:30,919 INFO L93 Difference]: Finished difference Result 127924 states and 132301 transitions. [2021-11-20 23:49:30,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:49:30,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 329.3333333333333) internal successors, (988), 3 states have internal predecessors, (988), 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 1432 [2021-11-20 23:49:30,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:49:31,001 INFO L225 Difference]: With dead ends: 127924 [2021-11-20 23:49:31,001 INFO L226 Difference]: Without dead ends: 64322 [2021-11-20 23:49:31,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1436 GetRequests, 1431 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:49:31,019 INFO L933 BasicCegarLoop]: 847 mSDtfsCounter, 136 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1755 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 1851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:49:31,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 854 Invalid, 1851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1755 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-20 23:49:31,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64322 states. [2021-11-20 23:49:31,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64322 to 64322. [2021-11-20 23:49:31,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64322 states, 64321 states have (on average 1.0242222602260538) internal successors, (65879), 64321 states have internal predecessors, (65879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:49:32,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64322 states to 64322 states and 65879 transitions. [2021-11-20 23:49:32,182 INFO L78 Accepts]: Start accepts. Automaton has 64322 states and 65879 transitions. Word has length 1432 [2021-11-20 23:49:32,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:49:32,184 INFO L470 AbstractCegarLoop]: Abstraction has 64322 states and 65879 transitions. [2021-11-20 23:49:32,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 329.3333333333333) internal successors, (988), 3 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:49:32,184 INFO L276 IsEmpty]: Start isEmpty. Operand 64322 states and 65879 transitions. [2021-11-20 23:49:32,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3743 [2021-11-20 23:49:32,404 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:49:32,406 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:49:32,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14a2d86f-666f-416f-90ca-391ddb593d54/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 23:49:32,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14a2d86f-666f-416f-90ca-391ddb593d54/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-20 23:49:32,620 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:49:32,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:49:32,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1619735558, now seen corresponding path program 1 times [2021-11-20 23:49:32,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:49:32,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837666243] [2021-11-20 23:49:32,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:49:32,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:49:32,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:49:35,943 INFO L134 CoverageAnalysis]: Checked inductivity of 11383 backedges. 4167 proven. 89 refuted. 0 times theorem prover too weak. 7127 trivial. 0 not checked. [2021-11-20 23:49:35,944 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:49:35,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837666243] [2021-11-20 23:49:35,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837666243] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:49:35,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490979157] [2021-11-20 23:49:35,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:49:35,945 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:49:35,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14a2d86f-666f-416f-90ca-391ddb593d54/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:49:35,947 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14a2d86f-666f-416f-90ca-391ddb593d54/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:49:35,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14a2d86f-666f-416f-90ca-391ddb593d54/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 23:49:37,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:49:37,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 4333 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 23:49:37,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:49:43,634 INFO L134 CoverageAnalysis]: Checked inductivity of 11383 backedges. 6523 proven. 0 refuted. 0 times theorem prover too weak. 4860 trivial. 0 not checked. [2021-11-20 23:49:43,634 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:49:43,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490979157] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:49:43,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 23:49:43,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2021-11-20 23:49:43,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582864187] [2021-11-20 23:49:43,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:49:43,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:49:43,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:49:43,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:49:43,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:49:43,643 INFO L87 Difference]: Start difference. First operand 64322 states and 65879 transitions. Second operand has 3 states, 3 states have (on average 444.0) internal successors, (1332), 3 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:49:46,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:49:46,064 INFO L93 Difference]: Finished difference Result 145358 states and 148982 transitions. [2021-11-20 23:49:46,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:49:46,065 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 444.0) internal successors, (1332), 3 states have internal predecessors, (1332), 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 3742 [2021-11-20 23:49:46,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:49:46,294 INFO L225 Difference]: With dead ends: 145358 [2021-11-20 23:49:46,295 INFO L226 Difference]: Without dead ends: 81756 [2021-11-20 23:49:46,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3746 GetRequests, 3741 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:49:46,319 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 576 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1762 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 2010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 1762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:49:46,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [576 Valid, 96 Invalid, 2010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 1762 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-20 23:49:46,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81756 states. [2021-11-20 23:49:47,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81756 to 80240. [2021-11-20 23:49:47,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80240 states, 80239 states have (on average 1.0221588005832576) internal successors, (82017), 80239 states have internal predecessors, (82017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:49:47,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80240 states to 80240 states and 82017 transitions. [2021-11-20 23:49:47,498 INFO L78 Accepts]: Start accepts. Automaton has 80240 states and 82017 transitions. Word has length 3742 [2021-11-20 23:49:47,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:49:47,500 INFO L470 AbstractCegarLoop]: Abstraction has 80240 states and 82017 transitions. [2021-11-20 23:49:47,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 444.0) internal successors, (1332), 3 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:49:47,500 INFO L276 IsEmpty]: Start isEmpty. Operand 80240 states and 82017 transitions. [2021-11-20 23:49:48,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5437 [2021-11-20 23:49:48,098 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:49:48,101 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:49:48,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14a2d86f-666f-416f-90ca-391ddb593d54/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 23:49:48,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14a2d86f-666f-416f-90ca-391ddb593d54/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:49:48,324 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:49:48,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:49:48,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1606461008, now seen corresponding path program 1 times [2021-11-20 23:49:48,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:49:48,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427561074] [2021-11-20 23:49:48,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:49:48,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:49:48,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:49:55,189 INFO L134 CoverageAnalysis]: Checked inductivity of 23781 backedges. 6099 proven. 89 refuted. 0 times theorem prover too weak. 17593 trivial. 0 not checked. [2021-11-20 23:49:55,189 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:49:55,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427561074] [2021-11-20 23:49:55,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427561074] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:49:55,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814037054] [2021-11-20 23:49:55,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:49:55,190 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:49:55,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14a2d86f-666f-416f-90ca-391ddb593d54/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:49:55,191 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14a2d86f-666f-416f-90ca-391ddb593d54/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:49:55,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14a2d86f-666f-416f-90ca-391ddb593d54/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 23:49:57,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:49:57,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 6190 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 23:49:57,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:50:04,900 INFO L134 CoverageAnalysis]: Checked inductivity of 23781 backedges. 13062 proven. 0 refuted. 0 times theorem prover too weak. 10719 trivial. 0 not checked. [2021-11-20 23:50:04,900 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:50:04,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814037054] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:50:04,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 23:50:04,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2021-11-20 23:50:04,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616915294] [2021-11-20 23:50:04,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:50:04,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:50:04,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:50:04,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:50:04,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:50:04,910 INFO L87 Difference]: Start difference. First operand 80240 states and 82017 transitions. Second operand has 3 states, 3 states have (on average 577.6666666666666) internal successors, (1733), 3 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:50:07,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:50:07,064 INFO L93 Difference]: Finished difference Result 184016 states and 188208 transitions. [2021-11-20 23:50:07,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:50:07,065 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 577.6666666666666) internal successors, (1733), 3 states have internal predecessors, (1733), 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 5436 [2021-11-20 23:50:07,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:50:07,150 INFO L225 Difference]: With dead ends: 184016 [2021-11-20 23:50:07,150 INFO L226 Difference]: Without dead ends: 104496 [2021-11-20 23:50:07,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5440 GetRequests, 5435 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:50:07,168 INFO L933 BasicCegarLoop]: 945 mSDtfsCounter, 136 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1908 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 2053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:50:07,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 951 Invalid, 2053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1908 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-20 23:50:07,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104496 states. [2021-11-20 23:50:08,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104496 to 97674. [2021-11-20 23:50:08,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97674 states, 97673 states have (on average 1.022032700951133) internal successors, (99825), 97673 states have internal predecessors, (99825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:50:08,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97674 states to 97674 states and 99825 transitions. [2021-11-20 23:50:08,242 INFO L78 Accepts]: Start accepts. Automaton has 97674 states and 99825 transitions. Word has length 5436 [2021-11-20 23:50:08,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:50:08,243 INFO L470 AbstractCegarLoop]: Abstraction has 97674 states and 99825 transitions. [2021-11-20 23:50:08,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 577.6666666666666) internal successors, (1733), 3 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:50:08,244 INFO L276 IsEmpty]: Start isEmpty. Operand 97674 states and 99825 transitions. [2021-11-20 23:50:08,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5639 [2021-11-20 23:50:08,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:50:08,964 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:50:08,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14a2d86f-666f-416f-90ca-391ddb593d54/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 23:50:09,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14a2d86f-666f-416f-90ca-391ddb593d54/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-20 23:50:09,192 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:50:09,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:50:09,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1452661948, now seen corresponding path program 1 times [2021-11-20 23:50:09,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:50:09,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217279369] [2021-11-20 23:50:09,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:50:09,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:50:09,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:50:15,132 INFO L134 CoverageAnalysis]: Checked inductivity of 27457 backedges. 6718 proven. 89 refuted. 0 times theorem prover too weak. 20650 trivial. 0 not checked. [2021-11-20 23:50:15,132 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:50:15,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217279369] [2021-11-20 23:50:15,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217279369] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:50:15,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955548830] [2021-11-20 23:50:15,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:50:15,133 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:50:15,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14a2d86f-666f-416f-90ca-391ddb593d54/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:50:15,144 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14a2d86f-666f-416f-90ca-391ddb593d54/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:50:15,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14a2d86f-666f-416f-90ca-391ddb593d54/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 23:50:16,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:50:16,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 6434 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 23:50:16,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:50:24,972 INFO L134 CoverageAnalysis]: Checked inductivity of 27457 backedges. 8382 proven. 0 refuted. 0 times theorem prover too weak. 19075 trivial. 0 not checked. [2021-11-20 23:50:24,972 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:50:24,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955548830] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:50:24,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 23:50:24,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2021-11-20 23:50:24,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692306491] [2021-11-20 23:50:24,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:50:24,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:50:24,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:50:24,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:50:24,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:50:24,979 INFO L87 Difference]: Start difference. First operand 97674 states and 99825 transitions. Second operand has 3 states, 3 states have (on average 486.3333333333333) internal successors, (1459), 3 states have internal predecessors, (1459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:50:27,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:50:27,015 INFO L93 Difference]: Finished difference Result 195384 states and 199685 transitions. [2021-11-20 23:50:27,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:50:27,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 486.3333333333333) internal successors, (1459), 3 states have internal predecessors, (1459), 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 5638 [2021-11-20 23:50:27,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:50:27,019 INFO L225 Difference]: With dead ends: 195384 [2021-11-20 23:50:27,019 INFO L226 Difference]: Without dead ends: 0 [2021-11-20 23:50:27,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5642 GetRequests, 5637 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:50:27,048 INFO L933 BasicCegarLoop]: 930 mSDtfsCounter, 31 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1735 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 1928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 1735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:50:27,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 936 Invalid, 1928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 1735 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-20 23:50:27,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-20 23:50:27,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-20 23:50:27,050 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) [2021-11-20 23:50:27,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-20 23:50:27,050 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5638 [2021-11-20 23:50:27,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:50:27,052 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 23:50:27,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 486.3333333333333) internal successors, (1459), 3 states have internal predecessors, (1459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:50:27,052 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-20 23:50:27,053 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-20 23:50:27,055 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 23:50:27,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14a2d86f-666f-416f-90ca-391ddb593d54/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 23:50:27,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14a2d86f-666f-416f-90ca-391ddb593d54/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-20 23:50:27,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-20 23:50:44,705 INFO L858 garLoopResultBuilder]: For program point L1819(lines 1819 2719) no Hoare annotation was computed. [2021-11-20 23:50:44,705 INFO L858 garLoopResultBuilder]: For program point L762(lines 762 1382) no Hoare annotation was computed. [2021-11-20 23:50:44,705 INFO L858 garLoopResultBuilder]: For program point L1555(lines 1555 2719) no Hoare annotation was computed. [2021-11-20 23:50:44,705 INFO L858 garLoopResultBuilder]: For program point L234(lines 234 1382) no Hoare annotation was computed. [2021-11-20 23:50:44,705 INFO L858 garLoopResultBuilder]: For program point L2084(lines 2084 2719) no Hoare annotation was computed. [2021-11-20 23:50:44,705 INFO L858 garLoopResultBuilder]: For program point L3141(lines 3141 4081) no Hoare annotation was computed. [2021-11-20 23:50:44,705 INFO L858 garLoopResultBuilder]: For program point L4727-1(lines 4084 4818) no Hoare annotation was computed. [2021-11-20 23:50:44,705 INFO L858 garLoopResultBuilder]: For program point L2613(lines 2613 2719) no Hoare annotation was computed. [2021-11-20 23:50:44,706 INFO L858 garLoopResultBuilder]: For program point L4463(lines 4463 4633) no Hoare annotation was computed. [2021-11-20 23:50:44,706 INFO L858 garLoopResultBuilder]: For program point L1292(lines 1292 1382) no Hoare annotation was computed. [2021-11-20 23:50:44,706 INFO L858 garLoopResultBuilder]: For program point L3671(lines 3671 4081) no Hoare annotation was computed. [2021-11-20 23:50:44,706 INFO L858 garLoopResultBuilder]: For program point L500(lines 500 1382) no Hoare annotation was computed. [2021-11-20 23:50:44,706 INFO L858 garLoopResultBuilder]: For program point L1029(lines 1029 1382) no Hoare annotation was computed. [2021-11-20 23:50:44,706 INFO L858 garLoopResultBuilder]: For program point L3936(lines 3936 4081) no Hoare annotation was computed. [2021-11-20 23:50:44,706 INFO L858 garLoopResultBuilder]: For program point L1823(lines 1823 2719) no Hoare annotation was computed. [2021-11-20 23:50:44,706 INFO L858 garLoopResultBuilder]: For program point L4730-1(lines 4084 4818) no Hoare annotation was computed. [2021-11-20 23:50:44,706 INFO L858 garLoopResultBuilder]: For program point L2352(lines 2352 2719) no Hoare annotation was computed. [2021-11-20 23:50:44,706 INFO L858 garLoopResultBuilder]: For program point L2881(lines 2881 4081) no Hoare annotation was computed. [2021-11-20 23:50:44,706 INFO L858 garLoopResultBuilder]: For program point L4731(line 4731) no Hoare annotation was computed. [2021-11-20 23:50:44,706 INFO L858 garLoopResultBuilder]: For program point L1560(lines 1560 2719) no Hoare annotation was computed. [2021-11-20 23:50:44,707 INFO L858 garLoopResultBuilder]: For program point L4203(lines 4203 4633) no Hoare annotation was computed. [2021-11-20 23:50:44,707 INFO L858 garLoopResultBuilder]: For program point L1032(lines 1032 1382) no Hoare annotation was computed. [2021-11-20 23:50:44,707 INFO L858 garLoopResultBuilder]: For program point L3411(lines 3411 4081) no Hoare annotation was computed. [2021-11-20 23:50:44,707 INFO L858 garLoopResultBuilder]: For program point L240(lines 240 1382) no Hoare annotation was computed. [2021-11-20 23:50:44,707 INFO L858 garLoopResultBuilder]: For program point L3147(lines 3147 4081) no Hoare annotation was computed. [2021-11-20 23:50:44,707 INFO L858 garLoopResultBuilder]: For program point L2883(lines 2883 4081) no Hoare annotation was computed. [2021-11-20 23:50:44,707 INFO L858 garLoopResultBuilder]: For program point L769(lines 769 1382) no Hoare annotation was computed. [2021-11-20 23:50:44,707 INFO L858 garLoopResultBuilder]: For program point L3676(lines 3676 4081) no Hoare annotation was computed. [2021-11-20 23:50:44,707 INFO L858 garLoopResultBuilder]: For program point L1298(lines 1298 1382) no Hoare annotation was computed. [2021-11-20 23:50:44,707 INFO L858 garLoopResultBuilder]: For program point L2091(lines 2091 2719) no Hoare annotation was computed. [2021-11-20 23:50:44,708 INFO L858 garLoopResultBuilder]: For program point L1827(lines 1827 2719) no Hoare annotation was computed. [2021-11-20 23:50:44,708 INFO L858 garLoopResultBuilder]: For program point L506(lines 506 1382) no Hoare annotation was computed. [2021-11-20 23:50:44,708 INFO L858 garLoopResultBuilder]: For program point L4470(lines 4470 4633) no Hoare annotation was computed. [2021-11-20 23:50:44,708 INFO L858 garLoopResultBuilder]: For program point L3942(lines 3942 4081) no Hoare annotation was computed. [2021-11-20 23:50:44,708 INFO L858 garLoopResultBuilder]: For program point L2621(lines 2621 2719) no Hoare annotation was computed. [2021-11-20 23:50:44,708 INFO L858 garLoopResultBuilder]: For program point L2358(lines 2358 2719) no Hoare annotation was computed. [2021-11-20 23:50:44,708 INFO L858 garLoopResultBuilder]: For program point L1566(lines 1566 2719) no Hoare annotation was computed. [2021-11-20 23:50:44,708 INFO L858 garLoopResultBuilder]: For program point L1038(lines 1038 1382) no Hoare annotation was computed. [2021-11-20 23:50:44,708 INFO L858 garLoopResultBuilder]: For program point L774(lines 774 1382) no Hoare annotation was computed. [2021-11-20 23:50:44,708 INFO L858 garLoopResultBuilder]: For program point L3681(lines 3681 4081) no Hoare annotation was computed. [2021-11-20 23:50:44,708 INFO L858 garLoopResultBuilder]: For program point L1303(lines 1303 1382) no Hoare annotation was computed. [2021-11-20 23:50:44,708 INFO L858 garLoopResultBuilder]: For program point L246(lines 246 1382) no Hoare annotation was computed. [2021-11-20 23:50:44,709 INFO L858 garLoopResultBuilder]: For program point L4210(lines 4210 4633) no Hoare annotation was computed. [2021-11-20 23:50:44,709 INFO L858 garLoopResultBuilder]: For program point L2625(lines 2625 2719) no Hoare annotation was computed. [2021-11-20 23:50:44,709 INFO L858 garLoopResultBuilder]: For program point L511(lines 511 1382) no Hoare annotation was computed. [2021-11-20 23:50:44,709 INFO L858 garLoopResultBuilder]: For program point L3418(lines 3418 4081) no Hoare annotation was computed. [2021-11-20 23:50:44,709 INFO L858 garLoopResultBuilder]: For program point L2361(lines 2361 2719) no Hoare annotation was computed. [2021-11-20 23:50:44,709 INFO L858 garLoopResultBuilder]: For program point L3154(lines 3154 4081) no Hoare annotation was computed. [2021-11-20 23:50:44,709 INFO L858 garLoopResultBuilder]: For program point L2097(lines 2097 2719) no Hoare annotation was computed. [2021-11-20 23:50:44,709 INFO L858 garLoopResultBuilder]: For program point L2890(lines 2890 4081) no Hoare annotation was computed. [2021-11-20 23:50:44,709 INFO L858 garLoopResultBuilder]: For program point L4477(lines 4477 4633) no Hoare annotation was computed. [2021-11-20 23:50:44,709 INFO L858 garLoopResultBuilder]: For program point L3949(lines 3949 4081) no Hoare annotation was computed. [2021-11-20 23:50:44,709 INFO L858 garLoopResultBuilder]: For program point L1835(lines 1835 2719) no Hoare annotation was computed. [2021-11-20 23:50:44,710 INFO L858 garLoopResultBuilder]: For program point L514(lines 514 1382) no Hoare annotation was computed. [2021-11-20 23:50:44,710 INFO L858 garLoopResultBuilder]: For program point L1572(lines 1572 2719) no Hoare annotation was computed. [2021-11-20 23:50:44,710 INFO L858 garLoopResultBuilder]: For program point L1308(lines 1308 1382) no Hoare annotation was computed. [2021-11-20 23:50:44,710 INFO L858 garLoopResultBuilder]: For program point L3423(lines 3423 4081) no Hoare annotation was computed. [2021-11-20 23:50:44,710 INFO L858 garLoopResultBuilder]: For program point L252(lines 252 1382) no Hoare annotation was computed. [2021-11-20 23:50:44,710 INFO L858 garLoopResultBuilder]: For program point L1045(lines 1045 1382) no Hoare annotation was computed. [2021-11-20 23:50:44,711 INFO L858 garLoopResultBuilder]: For program point L781(lines 781 1382) no Hoare annotation was computed. [2021-11-20 23:50:44,711 INFO L858 garLoopResultBuilder]: For program point L3688(lines 3688 4081) no Hoare annotation was computed. [2021-11-20 23:50:44,711 INFO L858 garLoopResultBuilder]: For program point L4217(lines 4217 4633) no Hoare annotation was computed. [2021-11-20 23:50:44,711 INFO L858 garLoopResultBuilder]: For program point L2103(lines 2103 2719) no Hoare annotation was computed. [2021-11-20 23:50:44,711 INFO L858 garLoopResultBuilder]: For program point L2632(lines 2632 2719) no Hoare annotation was computed. [2021-11-20 23:50:44,711 INFO L858 garLoopResultBuilder]: For program point L2368(lines 2368 2719) no Hoare annotation was computed. [2021-11-20 23:50:44,712 INFO L858 garLoopResultBuilder]: For program point L3161(lines 3161 4081) no Hoare annotation was computed. [2021-11-20 23:50:44,712 INFO L858 garLoopResultBuilder]: For program point L2897(lines 2897 4081) no Hoare annotation was computed. [2021-11-20 23:50:44,712 INFO L858 garLoopResultBuilder]: For program point L1048(lines 1048 1382) no Hoare annotation was computed. [2021-11-20 23:50:44,712 INFO L858 garLoopResultBuilder]: For program point L3955(lines 3955 4081) no Hoare annotation was computed. [2021-11-20 23:50:44,712 INFO L858 garLoopResultBuilder]: For program point L4484(lines 4484 4633) no Hoare annotation was computed. [2021-11-20 23:50:44,712 INFO L858 garLoopResultBuilder]: For program point L1313(lines 1313 1382) no Hoare annotation was computed. [2021-11-20 23:50:44,713 INFO L858 garLoopResultBuilder]: For program point L1578(lines 1578 2719) no Hoare annotation was computed. [2021-11-20 23:50:44,713 INFO L858 garLoopResultBuilder]: For program point L521(lines 521 1382) no Hoare annotation was computed. [2021-11-20 23:50:44,713 INFO L858 garLoopResultBuilder]: For program point L1843(lines 1843 2719) no Hoare annotation was computed. [2021-11-20 23:50:44,713 INFO L858 garLoopResultBuilder]: For program point L786(lines 786 1382) no Hoare annotation was computed. [2021-11-20 23:50:44,713 INFO L858 garLoopResultBuilder]: For program point L3694(lines 3694 4081) no Hoare annotation was computed. [2021-11-20 23:50:44,713 INFO L858 garLoopResultBuilder]: For program point L3430(lines 3430 4081) no Hoare annotation was computed. [2021-11-20 23:50:44,714 INFO L858 garLoopResultBuilder]: For program point L259(lines 259 1382) no Hoare annotation was computed. [2021-11-20 23:50:44,714 INFO L858 garLoopResultBuilder]: For program point L788(lines 788 1382) no Hoare annotation was computed. [2021-11-20 23:50:44,714 INFO L858 garLoopResultBuilder]: For program point L2110(lines 2110 2719) no Hoare annotation was computed. [2021-11-20 23:50:44,714 INFO L858 garLoopResultBuilder]: For program point L4224(lines 4224 4633) no Hoare annotation was computed. [2021-11-20 23:50:44,714 INFO L858 garLoopResultBuilder]: For program point L2639(lines 2639 2719) no Hoare annotation was computed. [2021-11-20 23:50:44,714 INFO L858 garLoopResultBuilder]: For program point L3432(lines 3432 4081) no Hoare annotation was computed. [2021-11-20 23:50:44,714 INFO L858 garLoopResultBuilder]: For program point L1318(lines 1318 1382) no Hoare annotation was computed. [2021-11-20 23:50:44,715 INFO L858 garLoopResultBuilder]: For program point L2375(lines 2375 2719) no Hoare annotation was computed. [2021-11-20 23:50:44,715 INFO L858 garLoopResultBuilder]: For program point L3168(lines 3168 4081) no Hoare annotation was computed. [2021-11-20 23:50:44,715 INFO L858 garLoopResultBuilder]: For program point L2904(lines 2904 4081) no Hoare annotation was computed. [2021-11-20 23:50:44,715 INFO L858 garLoopResultBuilder]: For program point L4490(lines 4490 4633) no Hoare annotation was computed. [2021-11-20 23:50:44,715 INFO L858 garLoopResultBuilder]: For program point L1055(lines 1055 1382) no Hoare annotation was computed. [2021-11-20 23:50:44,715 INFO L858 garLoopResultBuilder]: For program point L1584(lines 1584 2719) no Hoare annotation was computed. [2021-11-20 23:50:44,716 INFO L858 garLoopResultBuilder]: For program point L3963(lines 3963 4081) no Hoare annotation was computed. [2021-11-20 23:50:44,716 INFO L858 garLoopResultBuilder]: For program point L1849(lines 1849 2719) no Hoare annotation was computed. [2021-11-20 23:50:44,716 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4731) no Hoare annotation was computed. [2021-11-20 23:50:44,716 INFO L858 garLoopResultBuilder]: For program point L528(lines 528 1382) no Hoare annotation was computed. [2021-11-20 23:50:44,716 INFO L858 garLoopResultBuilder]: For program point L2114(lines 2114 2719) no Hoare annotation was computed. [2021-11-20 23:50:44,717 INFO L858 garLoopResultBuilder]: For program point L793(lines 793 1382) no Hoare annotation was computed. [2021-11-20 23:50:44,717 INFO L858 garLoopResultBuilder]: For program point L3700(lines 3700 4081) no Hoare annotation was computed. [2021-11-20 23:50:44,717 INFO L858 garLoopResultBuilder]: For program point L265(lines 265 1382) no Hoare annotation was computed. [2021-11-20 23:50:44,717 INFO L858 garLoopResultBuilder]: For program point L2908(lines 2908 4081) no Hoare annotation was computed. [2021-11-20 23:50:44,717 INFO L858 garLoopResultBuilder]: For program point L4494(lines 4494 4633) no Hoare annotation was computed. [2021-11-20 23:50:44,717 INFO L858 garLoopResultBuilder]: For program point L4230(lines 4230 4633) no Hoare annotation was computed. [2021-11-20 23:50:44,717 INFO L858 garLoopResultBuilder]: For program point L3173(lines 3173 4081) no Hoare annotation was computed. [2021-11-20 23:50:44,718 INFO L858 garLoopResultBuilder]: For program point L2645(lines 2645 2719) no Hoare annotation was computed. [2021-11-20 23:50:44,718 INFO L858 garLoopResultBuilder]: For program point L1589(lines 1589 2719) no Hoare annotation was computed. [2021-11-20 23:50:44,718 INFO L858 garLoopResultBuilder]: For program point L2382(lines 2382 2719) no Hoare annotation was computed. [2021-11-20 23:50:44,718 INFO L858 garLoopResultBuilder]: For program point L3439(lines 3439 4081) no Hoare annotation was computed. [2021-11-20 23:50:44,718 INFO L858 garLoopResultBuilder]: For program point L3968(lines 3968 4081) no Hoare annotation was computed. [2021-11-20 23:50:44,718 INFO L858 garLoopResultBuilder]: For program point L1854(lines 1854 2719) no Hoare annotation was computed. [2021-11-20 23:50:44,719 INFO L858 garLoopResultBuilder]: For program point L1326(lines 1326 1382) no Hoare annotation was computed. [2021-11-20 23:50:44,719 INFO L858 garLoopResultBuilder]: For program point L1062(lines 1062 1382) no Hoare annotation was computed. [2021-11-20 23:50:44,719 INFO L858 garLoopResultBuilder]: For program point L798(lines 798 1382) no Hoare annotation was computed. [2021-11-20 23:50:44,719 INFO L858 garLoopResultBuilder]: For program point L270(lines 270 1382) no Hoare annotation was computed. [2021-11-20 23:50:44,719 INFO L858 garLoopResultBuilder]: For program point L2120(lines 2120 2719) no Hoare annotation was computed. [2021-11-20 23:50:44,719 INFO L858 garLoopResultBuilder]: For program point L3706(lines 3706 4081) no Hoare annotation was computed. [2021-11-20 23:50:44,720 INFO L858 garLoopResultBuilder]: For program point L535(lines 535 1382) no Hoare annotation was computed. [2021-11-20 23:50:44,720 INFO L858 garLoopResultBuilder]: For program point L3178(lines 3178 4081) no Hoare annotation was computed. [2021-11-20 23:50:44,720 INFO L858 garLoopResultBuilder]: For program point L4236(lines 4236 4633) no Hoare annotation was computed. [2021-11-20 23:50:44,720 INFO L858 garLoopResultBuilder]: For program point L2915(lines 2915 4081) no Hoare annotation was computed. [2021-11-20 23:50:44,720 INFO L858 garLoopResultBuilder]: For program point L1594(lines 1594 2719) no Hoare annotation was computed. [2021-11-20 23:50:44,720 INFO L858 garLoopResultBuilder]: For program point L2651(lines 2651 2719) no Hoare annotation was computed. [2021-11-20 23:50:44,720 INFO L858 garLoopResultBuilder]: For program point L4501(lines 4501 4633) no Hoare annotation was computed. [2021-11-20 23:50:44,720 INFO L858 garLoopResultBuilder]: For program point L802(lines 802 1382) no Hoare annotation was computed. [2021-11-20 23:50:44,721 INFO L858 garLoopResultBuilder]: For program point L539(lines 539 1382) no Hoare annotation was computed. [2021-11-20 23:50:44,721 INFO L858 garLoopResultBuilder]: For program point L3446(lines 3446 4081) no Hoare annotation was computed. [2021-11-20 23:50:44,721 INFO L858 garLoopResultBuilder]: For program point L1332(lines 1332 1382) no Hoare annotation was computed. [2021-11-20 23:50:44,721 INFO L858 garLoopResultBuilder]: For program point L2389(lines 2389 2719) no Hoare annotation was computed. [2021-11-20 23:50:44,721 INFO L858 garLoopResultBuilder]: For program point L275(lines 275 1382) no Hoare annotation was computed. [2021-11-20 23:50:44,721 INFO L858 garLoopResultBuilder]: For program point L2125(lines 2125 2719) no Hoare annotation was computed. [2021-11-20 23:50:44,721 INFO L858 garLoopResultBuilder]: For program point L3975(lines 3975 4081) no Hoare annotation was computed. [2021-11-20 23:50:44,721 INFO L858 garLoopResultBuilder]: For program point L1861(lines 1861 2719) no Hoare annotation was computed. [2021-11-20 23:50:44,721 INFO L858 garLoopResultBuilder]: For program point L3711(lines 3711 4081) no Hoare annotation was computed. [2021-11-20 23:50:44,721 INFO L858 garLoopResultBuilder]: For program point L1069(lines 1069 1382) no Hoare annotation was computed. [2021-11-20 23:50:44,722 INFO L858 garLoopResultBuilder]: For program point L4506(lines 4506 4633) no Hoare annotation was computed. [2021-11-20 23:50:44,722 INFO L858 garLoopResultBuilder]: For program point L278(lines 278 1382) no Hoare annotation was computed. [2021-11-20 23:50:44,722 INFO L858 garLoopResultBuilder]: For program point L4242(lines 4242 4633) no Hoare annotation was computed. [2021-11-20 23:50:44,722 INFO L858 garLoopResultBuilder]: For program point L3186(lines 3186 4081) no Hoare annotation was computed. [2021-11-20 23:50:44,722 INFO L858 garLoopResultBuilder]: For program point L2394(lines 2394 2719) no Hoare annotation was computed. [2021-11-20 23:50:44,722 INFO L858 garLoopResultBuilder]: For program point L2923(lines 2923 4081) no Hoare annotation was computed. [2021-11-20 23:50:44,722 INFO L858 garLoopResultBuilder]: For program point L809(lines 809 1382) no Hoare annotation was computed. [2021-11-20 23:50:44,723 INFO L858 garLoopResultBuilder]: For program point L1602(lines 1602 2719) no Hoare annotation was computed. [2021-11-20 23:50:44,723 INFO L858 garLoopResultBuilder]: For program point L2659(lines 2659 2719) no Hoare annotation was computed. [2021-11-20 23:50:44,723 INFO L858 garLoopResultBuilder]: For program point L1338(lines 1338 1382) no Hoare annotation was computed. [2021-11-20 23:50:44,723 INFO L858 garLoopResultBuilder]: For program point L2131(lines 2131 2719) no Hoare annotation was computed. [2021-11-20 23:50:44,723 INFO L858 garLoopResultBuilder]: For program point L3717(lines 3717 4081) no Hoare annotation was computed. [2021-11-20 23:50:44,723 INFO L858 garLoopResultBuilder]: For program point L546(lines 546 1382) no Hoare annotation was computed. [2021-11-20 23:50:44,724 INFO L858 garLoopResultBuilder]: For program point L3453(lines 3453 4081) no Hoare annotation was computed. [2021-11-20 23:50:44,724 INFO L858 garLoopResultBuilder]: For program point L3982(lines 3982 4081) no Hoare annotation was computed. [2021-11-20 23:50:44,724 INFO L858 garLoopResultBuilder]: For program point L1076(lines 1076 1382) no Hoare annotation was computed. [2021-11-20 23:50:44,724 INFO L858 garLoopResultBuilder]: For program point L1869(lines 1869 2719) no Hoare annotation was computed. [2021-11-20 23:50:44,724 INFO L858 garLoopResultBuilder]: For program point L4512(lines 4512 4633) no Hoare annotation was computed. [2021-11-20 23:50:44,724 INFO L858 garLoopResultBuilder]: For program point L284(lines 284 1382) no Hoare annotation was computed. [2021-11-20 23:50:44,725 INFO L858 garLoopResultBuilder]: For program point L3191(lines 3191 4081) no Hoare annotation was computed. [2021-11-20 23:50:44,725 INFO L858 garLoopResultBuilder]: For program point L4248(lines 4248 4633) no Hoare annotation was computed. [2021-11-20 23:50:44,725 INFO L858 garLoopResultBuilder]: For program point L549(lines 549 1382) no Hoare annotation was computed. [2021-11-20 23:50:44,725 INFO L858 garLoopResultBuilder]: For program point L2664(lines 2664 2719) no Hoare annotation was computed. [2021-11-20 23:50:44,725 INFO L858 garLoopResultBuilder]: For program point L2401(lines 2401 2719) no Hoare annotation was computed. [2021-11-20 23:50:44,726 INFO L858 garLoopResultBuilder]: For program point L2137(lines 2137 2719) no Hoare annotation was computed. [2021-11-20 23:50:44,726 INFO L858 garLoopResultBuilder]: For program point L2930(lines 2930 4081) no Hoare annotation was computed. [2021-11-20 23:50:44,726 INFO L858 garLoopResultBuilder]: For program point L3723(lines 3723 4081) no Hoare annotation was computed. [2021-11-20 23:50:44,726 INFO L858 garLoopResultBuilder]: For program point L1609(lines 1609 2719) no Hoare annotation was computed. [2021-11-20 23:50:44,727 INFO L858 garLoopResultBuilder]: For program point L3459(lines 3459 4081) no Hoare annotation was computed.