./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/forester-heap/dll-sorted-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-sorted-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/bin/uautomizer-DQz5hQGWxF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 97c87a4be2f33468a224d89594f96c367f5837bb79771cd5155d22e1299d7831 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:21:09,203 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:21:09,206 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:21:09,267 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:21:09,268 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:21:09,269 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:21:09,271 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:21:09,274 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:21:09,276 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:21:09,278 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:21:09,279 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:21:09,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:21:09,281 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:21:09,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:21:09,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:21:09,286 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:21:09,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:21:09,288 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:21:09,291 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:21:09,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:21:09,295 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:21:09,297 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:21:09,299 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:21:09,300 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:21:09,304 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:21:09,305 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:21:09,305 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:21:09,307 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:21:09,307 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:21:09,309 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:21:09,316 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:21:09,317 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:21:09,318 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:21:09,319 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:21:09,321 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:21:09,323 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:21:09,324 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:21:09,324 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:21:09,325 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:21:09,326 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:21:09,326 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:21:09,327 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-20 06:21:09,375 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:21:09,378 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:21:09,379 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:21:09,379 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:21:09,380 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:21:09,381 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:21:09,382 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:21:09,382 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:21:09,382 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:21:09,383 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:21:09,384 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:21:09,384 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 06:21:09,384 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:21:09,385 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:21:09,385 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:21:09,385 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 06:21:09,385 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 06:21:09,386 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 06:21:09,386 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:21:09,386 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 06:21:09,386 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:21:09,387 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:21:09,387 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:21:09,387 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:21:09,388 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:21:09,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:21:09,388 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:21:09,388 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:21:09,389 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:21:09,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:21:09,389 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:21:09,390 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97c87a4be2f33468a224d89594f96c367f5837bb79771cd5155d22e1299d7831 [2021-11-20 06:21:09,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:21:09,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:21:09,719 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:21:09,721 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:21:09,722 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:21:09,723 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/forester-heap/dll-sorted-2.i [2021-11-20 06:21:09,808 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/bin/uautomizer-DQz5hQGWxF/data/4bdf858c1/135d41209696482b9e8a29310c98656f/FLAG473775dd6 [2021-11-20 06:21:10,562 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:21:10,562 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/sv-benchmarks/c/forester-heap/dll-sorted-2.i [2021-11-20 06:21:10,579 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/bin/uautomizer-DQz5hQGWxF/data/4bdf858c1/135d41209696482b9e8a29310c98656f/FLAG473775dd6 [2021-11-20 06:21:10,804 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/bin/uautomizer-DQz5hQGWxF/data/4bdf858c1/135d41209696482b9e8a29310c98656f [2021-11-20 06:21:10,807 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:21:10,809 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:21:10,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:21:10,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:21:10,814 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:21:10,815 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:21:10" (1/1) ... [2021-11-20 06:21:10,817 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14e9f775 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:10, skipping insertion in model container [2021-11-20 06:21:10,817 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:21:10" (1/1) ... [2021-11-20 06:21:10,825 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:21:10,894 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:21:11,387 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_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/sv-benchmarks/c/forester-heap/dll-sorted-2.i[22384,22397] [2021-11-20 06:21:11,398 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_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/sv-benchmarks/c/forester-heap/dll-sorted-2.i[22614,22627] [2021-11-20 06:21:11,408 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_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/sv-benchmarks/c/forester-heap/dll-sorted-2.i[22989,23002] [2021-11-20 06:21:11,409 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_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/sv-benchmarks/c/forester-heap/dll-sorted-2.i[23053,23066] [2021-11-20 06:21:11,413 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_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/sv-benchmarks/c/forester-heap/dll-sorted-2.i[23184,23197] [2021-11-20 06:21:11,414 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_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/sv-benchmarks/c/forester-heap/dll-sorted-2.i[23248,23261] [2021-11-20 06:21:11,427 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:21:11,438 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:21:11,510 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_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/sv-benchmarks/c/forester-heap/dll-sorted-2.i[22384,22397] [2021-11-20 06:21:11,513 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_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/sv-benchmarks/c/forester-heap/dll-sorted-2.i[22614,22627] [2021-11-20 06:21:11,516 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_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/sv-benchmarks/c/forester-heap/dll-sorted-2.i[22989,23002] [2021-11-20 06:21:11,517 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_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/sv-benchmarks/c/forester-heap/dll-sorted-2.i[23053,23066] [2021-11-20 06:21:11,519 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_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/sv-benchmarks/c/forester-heap/dll-sorted-2.i[23184,23197] [2021-11-20 06:21:11,520 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_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/sv-benchmarks/c/forester-heap/dll-sorted-2.i[23248,23261] [2021-11-20 06:21:11,535 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:21:11,579 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:21:11,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:11 WrapperNode [2021-11-20 06:21:11,580 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:21:11,581 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:21:11,582 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:21:11,582 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:21:11,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:11" (1/1) ... [2021-11-20 06:21:11,633 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:11" (1/1) ... [2021-11-20 06:21:11,682 INFO L137 Inliner]: procedures = 119, calls = 45, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 197 [2021-11-20 06:21:11,683 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:21:11,684 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:21:11,684 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:21:11,684 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:21:11,697 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:11" (1/1) ... [2021-11-20 06:21:11,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:11" (1/1) ... [2021-11-20 06:21:11,721 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:11" (1/1) ... [2021-11-20 06:21:11,721 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:11" (1/1) ... [2021-11-20 06:21:11,732 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:11" (1/1) ... [2021-11-20 06:21:11,740 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:11" (1/1) ... [2021-11-20 06:21:11,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:11" (1/1) ... [2021-11-20 06:21:11,746 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:21:11,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:21:11,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:21:11,747 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:21:11,748 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:11" (1/1) ... [2021-11-20 06:21:11,769 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:21:11,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:21:11,799 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:21:11,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:21:11,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 06:21:11,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 06:21:11,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 06:21:11,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:21:11,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 06:21:11,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 06:21:11,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 06:21:11,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 06:21:11,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:21:11,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:21:12,048 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:21:12,050 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:21:12,649 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:21:12,659 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:21:12,660 INFO L301 CfgBuilder]: Removed 18 assume(true) statements. [2021-11-20 06:21:12,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:21:12 BoogieIcfgContainer [2021-11-20 06:21:12,663 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:21:12,665 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:21:12,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:21:12,677 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:21:12,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:21:10" (1/3) ... [2021-11-20 06:21:12,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61ef1c5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:21:12, skipping insertion in model container [2021-11-20 06:21:12,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:21:11" (2/3) ... [2021-11-20 06:21:12,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61ef1c5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:21:12, skipping insertion in model container [2021-11-20 06:21:12,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:21:12" (3/3) ... [2021-11-20 06:21:12,682 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-sorted-2.i [2021-11-20 06:21:12,689 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:21:12,689 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 80 error locations. [2021-11-20 06:21:12,806 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:21:12,818 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 06:21:12,819 INFO L340 AbstractCegarLoop]: Starting to check reachability of 80 error locations. [2021-11-20 06:21:12,839 INFO L276 IsEmpty]: Start isEmpty. Operand has 179 states, 98 states have (on average 2.183673469387755) internal successors, (214), 178 states have internal predecessors, (214), 0 states have call successors, (0), 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 06:21:12,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-20 06:21:12,846 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:21:12,847 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-20 06:21:12,848 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 76 more)] === [2021-11-20 06:21:12,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:21:12,854 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-11-20 06:21:12,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:21:12,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774783492] [2021-11-20 06:21:12,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:12,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:21:12,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:13,041 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 06:21:13,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:21:13,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774783492] [2021-11-20 06:21:13,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774783492] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:21:13,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:21:13,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 06:21:13,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432268733] [2021-11-20 06:21:13,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:21:13,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:21:13,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:21:13,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:21:13,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:21:13,087 INFO L87 Difference]: Start difference. First operand has 179 states, 98 states have (on average 2.183673469387755) internal successors, (214), 178 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 06:21:13,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:21:13,344 INFO L93 Difference]: Finished difference Result 182 states and 193 transitions. [2021-11-20 06:21:13,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:21:13,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2021-11-20 06:21:13,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:21:13,359 INFO L225 Difference]: With dead ends: 182 [2021-11-20 06:21:13,359 INFO L226 Difference]: Without dead ends: 178 [2021-11-20 06:21:13,361 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 06:21:13,365 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 172 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:21:13,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 118 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:21:13,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-11-20 06:21:13,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 174. [2021-11-20 06:21:13,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 97 states have (on average 1.907216494845361) internal successors, (185), 173 states have internal predecessors, (185), 0 states have call successors, (0), 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 06:21:13,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 185 transitions. [2021-11-20 06:21:13,420 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 185 transitions. Word has length 3 [2021-11-20 06:21:13,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:21:13,421 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 185 transitions. [2021-11-20 06:21:13,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 06:21:13,421 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 185 transitions. [2021-11-20 06:21:13,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-20 06:21:13,422 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:21:13,422 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-20 06:21:13,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 06:21:13,423 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 76 more)] === [2021-11-20 06:21:13,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:21:13,424 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-11-20 06:21:13,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:21:13,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133973590] [2021-11-20 06:21:13,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:13,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:21:13,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:13,505 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 06:21:13,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:21:13,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133973590] [2021-11-20 06:21:13,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133973590] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:21:13,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:21:13,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 06:21:13,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273260136] [2021-11-20 06:21:13,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:21:13,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:21:13,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:21:13,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:21:13,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:21:13,518 INFO L87 Difference]: Start difference. First operand 174 states and 185 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 06:21:13,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:21:13,689 INFO L93 Difference]: Finished difference Result 175 states and 186 transitions. [2021-11-20 06:21:13,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:21:13,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2021-11-20 06:21:13,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:21:13,695 INFO L225 Difference]: With dead ends: 175 [2021-11-20 06:21:13,696 INFO L226 Difference]: Without dead ends: 175 [2021-11-20 06:21:13,697 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 06:21:13,700 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 167 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:21:13,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 116 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:21:13,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-11-20 06:21:13,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 171. [2021-11-20 06:21:13,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 97 states have (on average 1.8762886597938144) internal successors, (182), 170 states have internal predecessors, (182), 0 states have call successors, (0), 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 06:21:13,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 182 transitions. [2021-11-20 06:21:13,739 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 182 transitions. Word has length 3 [2021-11-20 06:21:13,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:21:13,741 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 182 transitions. [2021-11-20 06:21:13,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 06:21:13,742 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 182 transitions. [2021-11-20 06:21:13,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-20 06:21:13,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:21:13,743 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:21:13,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 06:21:13,744 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 76 more)] === [2021-11-20 06:21:13,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:21:13,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1837112042, now seen corresponding path program 1 times [2021-11-20 06:21:13,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:21:13,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790509688] [2021-11-20 06:21:13,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:13,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:21:13,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:13,900 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 06:21:13,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:21:13,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790509688] [2021-11-20 06:21:13,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790509688] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:21:13,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:21:13,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:21:13,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069903159] [2021-11-20 06:21:13,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:21:13,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:21:13,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:21:13,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:21:13,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:21:13,912 INFO L87 Difference]: Start difference. First operand 171 states and 182 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 06:21:14,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:21:14,176 INFO L93 Difference]: Finished difference Result 178 states and 192 transitions. [2021-11-20 06:21:14,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:21:14,176 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2021-11-20 06:21:14,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:21:14,178 INFO L225 Difference]: With dead ends: 178 [2021-11-20 06:21:14,179 INFO L226 Difference]: Without dead ends: 178 [2021-11-20 06:21:14,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:21:14,183 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 294 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:21:14,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 89 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:21:14,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-11-20 06:21:14,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 167. [2021-11-20 06:21:14,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 111 states have (on average 1.7027027027027026) internal successors, (189), 166 states have internal predecessors, (189), 0 states have call successors, (0), 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 06:21:14,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 189 transitions. [2021-11-20 06:21:14,205 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 189 transitions. Word has length 9 [2021-11-20 06:21:14,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:21:14,205 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 189 transitions. [2021-11-20 06:21:14,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 06:21:14,206 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 189 transitions. [2021-11-20 06:21:14,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-20 06:21:14,207 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:21:14,207 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:21:14,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 06:21:14,207 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 76 more)] === [2021-11-20 06:21:14,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:21:14,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1837112043, now seen corresponding path program 1 times [2021-11-20 06:21:14,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:21:14,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183227521] [2021-11-20 06:21:14,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:14,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:21:14,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:14,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:21:14,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:21:14,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183227521] [2021-11-20 06:21:14,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183227521] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:21:14,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:21:14,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 06:21:14,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715948617] [2021-11-20 06:21:14,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:21:14,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:21:14,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:21:14,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:21:14,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:21:14,373 INFO L87 Difference]: Start difference. First operand 167 states and 189 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 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 06:21:14,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:21:14,724 INFO L93 Difference]: Finished difference Result 258 states and 282 transitions. [2021-11-20 06:21:14,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:21:14,725 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2021-11-20 06:21:14,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:21:14,727 INFO L225 Difference]: With dead ends: 258 [2021-11-20 06:21:14,727 INFO L226 Difference]: Without dead ends: 258 [2021-11-20 06:21:14,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:21:14,728 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 437 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:21:14,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [437 Valid, 130 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 06:21:14,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-11-20 06:21:14,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 220. [2021-11-20 06:21:14,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 164 states have (on average 1.6097560975609757) internal successors, (264), 219 states have internal predecessors, (264), 0 states have call successors, (0), 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 06:21:14,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 264 transitions. [2021-11-20 06:21:14,751 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 264 transitions. Word has length 9 [2021-11-20 06:21:14,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:21:14,751 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 264 transitions. [2021-11-20 06:21:14,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 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 06:21:14,753 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 264 transitions. [2021-11-20 06:21:14,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 06:21:14,753 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:21:14,753 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:21:14,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 06:21:14,754 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 76 more)] === [2021-11-20 06:21:14,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:21:14,758 INFO L85 PathProgramCache]: Analyzing trace with hash 233093812, now seen corresponding path program 1 times [2021-11-20 06:21:14,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:21:14,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410544657] [2021-11-20 06:21:14,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:14,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:21:14,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:14,841 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 06:21:14,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:21:14,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410544657] [2021-11-20 06:21:14,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410544657] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:21:14,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:21:14,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:21:14,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046543796] [2021-11-20 06:21:14,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:21:14,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:21:14,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:21:14,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:21:14,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:21:14,844 INFO L87 Difference]: Start difference. First operand 220 states and 264 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:21:14,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:21:14,870 INFO L93 Difference]: Finished difference Result 266 states and 313 transitions. [2021-11-20 06:21:14,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:21:14,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-20 06:21:14,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:21:14,881 INFO L225 Difference]: With dead ends: 266 [2021-11-20 06:21:14,882 INFO L226 Difference]: Without dead ends: 266 [2021-11-20 06:21:14,882 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 06:21:14,884 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 120 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:21:14,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 235 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:21:14,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-11-20 06:21:14,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 233. [2021-11-20 06:21:14,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 177 states have (on average 1.6045197740112995) internal successors, (284), 232 states have internal predecessors, (284), 0 states have call successors, (0), 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 06:21:14,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 284 transitions. [2021-11-20 06:21:14,916 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 284 transitions. Word has length 11 [2021-11-20 06:21:14,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:21:14,917 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 284 transitions. [2021-11-20 06:21:14,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:21:14,917 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 284 transitions. [2021-11-20 06:21:14,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 06:21:14,918 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:21:14,918 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:21:14,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 06:21:14,918 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 76 more)] === [2021-11-20 06:21:14,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:21:14,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1363413642, now seen corresponding path program 1 times [2021-11-20 06:21:14,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:21:14,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086017617] [2021-11-20 06:21:14,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:14,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:21:14,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:15,043 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 06:21:15,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:21:15,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086017617] [2021-11-20 06:21:15,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086017617] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:21:15,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:21:15,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:21:15,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221542193] [2021-11-20 06:21:15,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:21:15,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:21:15,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:21:15,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:21:15,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:21:15,046 INFO L87 Difference]: Start difference. First operand 233 states and 284 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 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 06:21:15,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:21:15,303 INFO L93 Difference]: Finished difference Result 232 states and 281 transitions. [2021-11-20 06:21:15,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:21:15,303 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2021-11-20 06:21:15,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:21:15,305 INFO L225 Difference]: With dead ends: 232 [2021-11-20 06:21:15,305 INFO L226 Difference]: Without dead ends: 232 [2021-11-20 06:21:15,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:21:15,307 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 6 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:21:15,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 406 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:21:15,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-11-20 06:21:15,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2021-11-20 06:21:15,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 177 states have (on average 1.5875706214689265) internal successors, (281), 231 states have internal predecessors, (281), 0 states have call successors, (0), 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 06:21:15,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 281 transitions. [2021-11-20 06:21:15,315 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 281 transitions. Word has length 12 [2021-11-20 06:21:15,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:21:15,315 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 281 transitions. [2021-11-20 06:21:15,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 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 06:21:15,315 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 281 transitions. [2021-11-20 06:21:15,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 06:21:15,316 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:21:15,318 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:21:15,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 06:21:15,319 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 76 more)] === [2021-11-20 06:21:15,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:21:15,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1363413643, now seen corresponding path program 1 times [2021-11-20 06:21:15,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:21:15,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23831876] [2021-11-20 06:21:15,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:15,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:21:15,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:15,412 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 06:21:15,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:21:15,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23831876] [2021-11-20 06:21:15,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23831876] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:21:15,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:21:15,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:21:15,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882685028] [2021-11-20 06:21:15,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:21:15,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:21:15,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:21:15,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:21:15,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:21:15,417 INFO L87 Difference]: Start difference. First operand 232 states and 281 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 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 06:21:15,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:21:15,696 INFO L93 Difference]: Finished difference Result 231 states and 278 transitions. [2021-11-20 06:21:15,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:21:15,696 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2021-11-20 06:21:15,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:21:15,698 INFO L225 Difference]: With dead ends: 231 [2021-11-20 06:21:15,698 INFO L226 Difference]: Without dead ends: 231 [2021-11-20 06:21:15,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:21:15,700 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 7 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:21:15,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 426 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:21:15,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-11-20 06:21:15,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2021-11-20 06:21:15,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 177 states have (on average 1.5706214689265536) internal successors, (278), 230 states have internal predecessors, (278), 0 states have call successors, (0), 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 06:21:15,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 278 transitions. [2021-11-20 06:21:15,707 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 278 transitions. Word has length 12 [2021-11-20 06:21:15,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:21:15,708 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 278 transitions. [2021-11-20 06:21:15,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 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 06:21:15,708 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 278 transitions. [2021-11-20 06:21:15,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 06:21:15,709 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:21:15,709 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:21:15,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 06:21:15,710 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 76 more)] === [2021-11-20 06:21:15,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:21:15,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1546362871, now seen corresponding path program 1 times [2021-11-20 06:21:15,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:21:15,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835180604] [2021-11-20 06:21:15,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:15,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:21:15,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:15,856 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 06:21:15,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:21:15,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835180604] [2021-11-20 06:21:15,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835180604] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:21:15,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:21:15,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-20 06:21:15,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263558082] [2021-11-20 06:21:15,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:21:15,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 06:21:15,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:21:15,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 06:21:15,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:21:15,859 INFO L87 Difference]: Start difference. First operand 231 states and 278 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:21:16,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:21:16,280 INFO L93 Difference]: Finished difference Result 237 states and 279 transitions. [2021-11-20 06:21:16,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 06:21:16,281 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-20 06:21:16,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:21:16,283 INFO L225 Difference]: With dead ends: 237 [2021-11-20 06:21:16,283 INFO L226 Difference]: Without dead ends: 237 [2021-11-20 06:21:16,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-11-20 06:21:16,284 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 291 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:21:16,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 289 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 06:21:16,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-11-20 06:21:16,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 230. [2021-11-20 06:21:16,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 177 states have (on average 1.5593220338983051) internal successors, (276), 229 states have internal predecessors, (276), 0 states have call successors, (0), 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 06:21:16,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 276 transitions. [2021-11-20 06:21:16,293 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 276 transitions. Word has length 16 [2021-11-20 06:21:16,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:21:16,294 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 276 transitions. [2021-11-20 06:21:16,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:21:16,294 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 276 transitions. [2021-11-20 06:21:16,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 06:21:16,295 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:21:16,295 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:21:16,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 06:21:16,295 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 76 more)] === [2021-11-20 06:21:16,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:21:16,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1546362872, now seen corresponding path program 1 times [2021-11-20 06:21:16,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:21:16,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336394233] [2021-11-20 06:21:16,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:16,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:21:16,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:16,492 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 06:21:16,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:21:16,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336394233] [2021-11-20 06:21:16,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336394233] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:21:16,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:21:16,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 06:21:16,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502573663] [2021-11-20 06:21:16,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:21:16,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:21:16,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:21:16,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:21:16,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:21:16,495 INFO L87 Difference]: Start difference. First operand 230 states and 276 transitions. Second operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:21:17,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:21:17,249 INFO L93 Difference]: Finished difference Result 232 states and 270 transitions. [2021-11-20 06:21:17,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 06:21:17,250 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-20 06:21:17,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:21:17,252 INFO L225 Difference]: With dead ends: 232 [2021-11-20 06:21:17,252 INFO L226 Difference]: Without dead ends: 232 [2021-11-20 06:21:17,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=140, Invalid=366, Unknown=0, NotChecked=0, Total=506 [2021-11-20 06:21:17,254 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 288 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:21:17,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 388 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 06:21:17,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-11-20 06:21:17,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 216. [2021-11-20 06:21:17,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 169 states have (on average 1.5266272189349113) internal successors, (258), 215 states have internal predecessors, (258), 0 states have call successors, (0), 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 06:21:17,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 258 transitions. [2021-11-20 06:21:17,262 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 258 transitions. Word has length 16 [2021-11-20 06:21:17,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:21:17,262 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 258 transitions. [2021-11-20 06:21:17,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:21:17,263 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 258 transitions. [2021-11-20 06:21:17,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-20 06:21:17,264 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:21:17,264 INFO L514 BasicCegarLoop]: trace histogram [2, 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 06:21:17,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 06:21:17,264 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 76 more)] === [2021-11-20 06:21:17,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:21:17,265 INFO L85 PathProgramCache]: Analyzing trace with hash -961820477, now seen corresponding path program 1 times [2021-11-20 06:21:17,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:21:17,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958266545] [2021-11-20 06:21:17,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:17,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:21:17,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:17,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:21:17,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:21:17,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958266545] [2021-11-20 06:21:17,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958266545] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:21:17,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:21:17,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:21:17,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113597704] [2021-11-20 06:21:17,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:21:17,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:21:17,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:21:17,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:21:17,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:21:17,327 INFO L87 Difference]: Start difference. First operand 216 states and 258 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 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 06:21:17,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:21:17,479 INFO L93 Difference]: Finished difference Result 253 states and 276 transitions. [2021-11-20 06:21:17,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:21:17,480 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 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 25 [2021-11-20 06:21:17,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:21:17,482 INFO L225 Difference]: With dead ends: 253 [2021-11-20 06:21:17,482 INFO L226 Difference]: Without dead ends: 253 [2021-11-20 06:21:17,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:21:17,483 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 295 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:21:17,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 202 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:21:17,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-11-20 06:21:17,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 214. [2021-11-20 06:21:17,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 168 states have (on average 1.5119047619047619) internal successors, (254), 213 states have internal predecessors, (254), 0 states have call successors, (0), 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 06:21:17,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 254 transitions. [2021-11-20 06:21:17,488 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 254 transitions. Word has length 25 [2021-11-20 06:21:17,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:21:17,489 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 254 transitions. [2021-11-20 06:21:17,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 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 06:21:17,489 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 254 transitions. [2021-11-20 06:21:17,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-20 06:21:17,490 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:21:17,491 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:21:17,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 06:21:17,491 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 76 more)] === [2021-11-20 06:21:17,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:21:17,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1496912174, now seen corresponding path program 1 times [2021-11-20 06:21:17,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:21:17,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661751927] [2021-11-20 06:21:17,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:17,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:21:17,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:17,792 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:21:17,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:21:17,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661751927] [2021-11-20 06:21:17,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661751927] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:21:17,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213173195] [2021-11-20 06:21:17,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:17,794 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:21:17,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:21:17,796 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:21:17,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 06:21:17,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:17,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-20 06:21:17,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:21:17,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 06:21:18,141 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-20 06:21:18,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-20 06:21:18,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-20 06:21:18,416 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-20 06:21:18,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 29 [2021-11-20 06:21:18,771 INFO L354 Elim1Store]: treesize reduction 62, result has 27.1 percent of original size [2021-11-20 06:21:18,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 48 [2021-11-20 06:21:18,940 INFO L354 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2021-11-20 06:21:18,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 45 [2021-11-20 06:21:19,321 INFO L354 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2021-11-20 06:21:19,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 33 [2021-11-20 06:21:19,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:21:19,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:21:55,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7780 treesize of output 7748 [2021-11-20 06:21:55,478 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-20 06:21:55,478 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:21:55,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-11-20 06:21:55,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873206162] [2021-11-20 06:21:55,479 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-20 06:21:55,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 06:21:55,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:21:55,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 06:21:55,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=945, Unknown=17, NotChecked=0, Total=1122 [2021-11-20 06:21:55,481 INFO L87 Difference]: Start difference. First operand 214 states and 254 transitions. Second operand has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 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 06:21:56,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:21:56,873 INFO L93 Difference]: Finished difference Result 419 states and 476 transitions. [2021-11-20 06:21:56,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-20 06:21:56,874 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-20 06:21:56,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:21:56,877 INFO L225 Difference]: With dead ends: 419 [2021-11-20 06:21:56,877 INFO L226 Difference]: Without dead ends: 419 [2021-11-20 06:21:56,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 36.7s TimeCoverageRelationStatistics Valid=362, Invalid=2273, Unknown=17, NotChecked=0, Total=2652 [2021-11-20 06:21:56,880 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 797 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 06:21:56,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [797 Valid, 635 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 839 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 06:21:56,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2021-11-20 06:21:56,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 239. [2021-11-20 06:21:56,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 193 states have (on average 1.471502590673575) internal successors, (284), 238 states have internal predecessors, (284), 0 states have call successors, (0), 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 06:21:56,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 284 transitions. [2021-11-20 06:21:56,905 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 284 transitions. Word has length 31 [2021-11-20 06:21:56,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:21:56,906 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 284 transitions. [2021-11-20 06:21:56,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 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 06:21:56,907 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 284 transitions. [2021-11-20 06:21:56,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-20 06:21:56,910 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:21:56,912 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:21:56,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 06:21:57,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:21:57,133 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 76 more)] === [2021-11-20 06:21:57,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:21:57,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1496912173, now seen corresponding path program 1 times [2021-11-20 06:21:57,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:21:57,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023255358] [2021-11-20 06:21:57,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:57,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:21:57,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:57,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:21:57,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:21:57,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023255358] [2021-11-20 06:21:57,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023255358] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:21:57,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663535910] [2021-11-20 06:21:57,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:57,521 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:21:57,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:21:57,523 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:21:57,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 06:21:57,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:21:57,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-20 06:21:57,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:21:57,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 06:21:57,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 06:21:57,760 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 06:21:57,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-20 06:21:57,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 06:21:57,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-20 06:21:57,973 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-20 06:21:57,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 49 [2021-11-20 06:21:57,990 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-11-20 06:21:57,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 54 [2021-11-20 06:21:58,327 INFO L354 Elim1Store]: treesize reduction 62, result has 27.1 percent of original size [2021-11-20 06:21:58,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 75 [2021-11-20 06:21:58,352 INFO L354 Elim1Store]: treesize reduction 60, result has 22.1 percent of original size [2021-11-20 06:21:58,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 68 [2021-11-20 06:21:58,538 INFO L354 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2021-11-20 06:21:58,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 109 treesize of output 78 [2021-11-20 06:21:58,566 INFO L354 Elim1Store]: treesize reduction 96, result has 16.5 percent of original size [2021-11-20 06:21:58,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 78 treesize of output 53 [2021-11-20 06:21:59,033 INFO L354 Elim1Store]: treesize reduction 38, result has 7.3 percent of original size [2021-11-20 06:21:59,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 54 [2021-11-20 06:21:59,045 INFO L354 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2021-11-20 06:21:59,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 31 [2021-11-20 06:21:59,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:21:59,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:22:26,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14200 treesize of output 14176 [2021-11-20 06:22:26,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 169695 treesize of output 168159 [2021-11-20 06:22:27,975 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-20 06:22:27,975 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:22:27,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-11-20 06:22:27,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646049683] [2021-11-20 06:22:27,976 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-20 06:22:27,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 06:22:27,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:22:27,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 06:22:27,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1029, Unknown=11, NotChecked=0, Total=1190 [2021-11-20 06:22:27,978 INFO L87 Difference]: Start difference. First operand 239 states and 284 transitions. Second operand has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 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 06:22:29,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:22:29,042 INFO L93 Difference]: Finished difference Result 413 states and 465 transitions. [2021-11-20 06:22:29,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 06:22:29,043 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-20 06:22:29,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:22:29,045 INFO L225 Difference]: With dead ends: 413 [2021-11-20 06:22:29,045 INFO L226 Difference]: Without dead ends: 413 [2021-11-20 06:22:29,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 662 ImplicationChecksByTransitivity, 27.8s TimeCoverageRelationStatistics Valid=299, Invalid=1946, Unknown=11, NotChecked=0, Total=2256 [2021-11-20 06:22:29,047 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 682 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 06:22:29,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [682 Valid, 535 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 06:22:29,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2021-11-20 06:22:29,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 239. [2021-11-20 06:22:29,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 193 states have (on average 1.4663212435233162) internal successors, (283), 238 states have internal predecessors, (283), 0 states have call successors, (0), 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 06:22:29,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 283 transitions. [2021-11-20 06:22:29,055 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 283 transitions. Word has length 31 [2021-11-20 06:22:29,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:22:29,056 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 283 transitions. [2021-11-20 06:22:29,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 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 06:22:29,056 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 283 transitions. [2021-11-20 06:22:29,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-20 06:22:29,057 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:22:29,058 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:22:29,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 06:22:29,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:22:29,273 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 76 more)] === [2021-11-20 06:22:29,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:22:29,273 INFO L85 PathProgramCache]: Analyzing trace with hash 290187840, now seen corresponding path program 1 times [2021-11-20 06:22:29,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:22:29,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851200713] [2021-11-20 06:22:29,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:22:29,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:22:29,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:29,310 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:22:29,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:22:29,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851200713] [2021-11-20 06:22:29,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851200713] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:22:29,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:22:29,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:22:29,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669764233] [2021-11-20 06:22:29,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:22:29,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:22:29,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:22:29,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:22:29,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:22:29,313 INFO L87 Difference]: Start difference. First operand 239 states and 283 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:22:29,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:22:29,322 INFO L93 Difference]: Finished difference Result 241 states and 285 transitions. [2021-11-20 06:22:29,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:22:29,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-20 06:22:29,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:22:29,324 INFO L225 Difference]: With dead ends: 241 [2021-11-20 06:22:29,324 INFO L226 Difference]: Without dead ends: 241 [2021-11-20 06:22:29,325 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 06:22:29,330 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 0 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:22:29,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 298 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:22:29,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-11-20 06:22:29,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2021-11-20 06:22:29,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 195 states have (on average 1.4615384615384615) internal successors, (285), 240 states have internal predecessors, (285), 0 states have call successors, (0), 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 06:22:29,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 285 transitions. [2021-11-20 06:22:29,337 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 285 transitions. Word has length 33 [2021-11-20 06:22:29,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:22:29,339 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 285 transitions. [2021-11-20 06:22:29,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:22:29,340 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 285 transitions. [2021-11-20 06:22:29,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-20 06:22:29,344 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:22:29,344 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:22:29,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-20 06:22:29,344 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr36REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 76 more)] === [2021-11-20 06:22:29,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:22:29,345 INFO L85 PathProgramCache]: Analyzing trace with hash 2033494590, now seen corresponding path program 1 times [2021-11-20 06:22:29,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:22:29,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281202623] [2021-11-20 06:22:29,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:22:29,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:22:29,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:29,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:22:29,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:22:29,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281202623] [2021-11-20 06:22:29,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281202623] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:22:29,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:22:29,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:22:29,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288634236] [2021-11-20 06:22:29,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:22:29,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:22:29,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:22:29,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:22:29,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:22:29,461 INFO L87 Difference]: Start difference. First operand 241 states and 285 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 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 06:22:29,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:22:29,731 INFO L93 Difference]: Finished difference Result 258 states and 304 transitions. [2021-11-20 06:22:29,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 06:22:29,732 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 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 36 [2021-11-20 06:22:29,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:22:29,733 INFO L225 Difference]: With dead ends: 258 [2021-11-20 06:22:29,733 INFO L226 Difference]: Without dead ends: 258 [2021-11-20 06:22:29,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:22:29,734 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 34 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:22:29,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 619 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:22:29,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-11-20 06:22:29,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 249. [2021-11-20 06:22:29,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 203 states have (on average 1.4482758620689655) internal successors, (294), 248 states have internal predecessors, (294), 0 states have call successors, (0), 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 06:22:29,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 294 transitions. [2021-11-20 06:22:29,740 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 294 transitions. Word has length 36 [2021-11-20 06:22:29,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:22:29,741 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 294 transitions. [2021-11-20 06:22:29,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 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 06:22:29,741 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 294 transitions. [2021-11-20 06:22:29,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-20 06:22:29,742 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:22:29,742 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:22:29,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-20 06:22:29,742 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr36REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 76 more)] === [2021-11-20 06:22:29,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:22:29,742 INFO L85 PathProgramCache]: Analyzing trace with hash 2033554172, now seen corresponding path program 1 times [2021-11-20 06:22:29,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:22:29,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130221756] [2021-11-20 06:22:29,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:22:29,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:22:29,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:29,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:22:29,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:22:29,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130221756] [2021-11-20 06:22:29,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130221756] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:22:29,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:22:29,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 06:22:29,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714971305] [2021-11-20 06:22:29,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:22:29,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:22:29,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:22:29,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:22:29,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:22:29,775 INFO L87 Difference]: Start difference. First operand 249 states and 294 transitions. Second operand has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 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 06:22:29,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:22:29,858 INFO L93 Difference]: Finished difference Result 246 states and 286 transitions. [2021-11-20 06:22:29,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:22:29,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 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 36 [2021-11-20 06:22:29,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:22:29,860 INFO L225 Difference]: With dead ends: 246 [2021-11-20 06:22:29,860 INFO L226 Difference]: Without dead ends: 246 [2021-11-20 06:22:29,860 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 06:22:29,860 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 78 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:22:29,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 170 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:22:29,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2021-11-20 06:22:29,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 245. [2021-11-20 06:22:29,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 203 states have (on average 1.4088669950738917) internal successors, (286), 244 states have internal predecessors, (286), 0 states have call successors, (0), 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 06:22:29,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 286 transitions. [2021-11-20 06:22:29,867 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 286 transitions. Word has length 36 [2021-11-20 06:22:29,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:22:29,868 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 286 transitions. [2021-11-20 06:22:29,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 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 06:22:29,868 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 286 transitions. [2021-11-20 06:22:29,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-20 06:22:29,869 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:22:29,869 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:22:29,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-20 06:22:29,869 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr37REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 76 more)] === [2021-11-20 06:22:29,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:22:29,870 INFO L85 PathProgramCache]: Analyzing trace with hash 2033554173, now seen corresponding path program 1 times [2021-11-20 06:22:29,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:22:29,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336458058] [2021-11-20 06:22:29,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:22:29,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:22:29,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:29,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:22:29,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:22:29,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336458058] [2021-11-20 06:22:29,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336458058] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:22:29,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:22:29,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 06:22:29,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777327201] [2021-11-20 06:22:29,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:22:29,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:22:29,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:22:29,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:22:29,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:22:29,909 INFO L87 Difference]: Start difference. First operand 245 states and 286 transitions. Second operand has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 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 06:22:29,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:22:29,988 INFO L93 Difference]: Finished difference Result 241 states and 278 transitions. [2021-11-20 06:22:29,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:22:29,988 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 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 36 [2021-11-20 06:22:29,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:22:29,990 INFO L225 Difference]: With dead ends: 241 [2021-11-20 06:22:29,990 INFO L226 Difference]: Without dead ends: 241 [2021-11-20 06:22:29,991 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 06:22:29,991 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 82 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:22:29,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 148 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:22:29,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-11-20 06:22:29,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2021-11-20 06:22:29,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 203 states have (on average 1.3694581280788178) internal successors, (278), 240 states have internal predecessors, (278), 0 states have call successors, (0), 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 06:22:29,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 278 transitions. [2021-11-20 06:22:29,999 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 278 transitions. Word has length 36 [2021-11-20 06:22:29,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:22:29,999 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 278 transitions. [2021-11-20 06:22:29,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 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 06:22:29,999 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 278 transitions. [2021-11-20 06:22:30,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-20 06:22:30,000 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:22:30,000 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:22:30,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-20 06:22:30,001 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 76 more)] === [2021-11-20 06:22:30,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:22:30,001 INFO L85 PathProgramCache]: Analyzing trace with hash 817273180, now seen corresponding path program 1 times [2021-11-20 06:22:30,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:22:30,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743179019] [2021-11-20 06:22:30,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:22:30,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:22:30,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:30,048 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:22:30,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:22:30,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743179019] [2021-11-20 06:22:30,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743179019] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:22:30,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:22:30,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 06:22:30,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787189464] [2021-11-20 06:22:30,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:22:30,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:22:30,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:22:30,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:22:30,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:22:30,051 INFO L87 Difference]: Start difference. First operand 241 states and 278 transitions. Second operand has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 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 06:22:30,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:22:30,352 INFO L93 Difference]: Finished difference Result 261 states and 299 transitions. [2021-11-20 06:22:30,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:22:30,352 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 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 36 [2021-11-20 06:22:30,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:22:30,354 INFO L225 Difference]: With dead ends: 261 [2021-11-20 06:22:30,354 INFO L226 Difference]: Without dead ends: 261 [2021-11-20 06:22:30,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:22:30,355 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 114 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:22:30,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 335 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 06:22:30,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-11-20 06:22:30,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 240. [2021-11-20 06:22:30,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 203 states have (on average 1.3645320197044335) internal successors, (277), 239 states have internal predecessors, (277), 0 states have call successors, (0), 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 06:22:30,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 277 transitions. [2021-11-20 06:22:30,361 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 277 transitions. Word has length 36 [2021-11-20 06:22:30,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:22:30,361 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 277 transitions. [2021-11-20 06:22:30,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 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 06:22:30,362 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 277 transitions. [2021-11-20 06:22:30,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-20 06:22:30,362 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:22:30,362 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:22:30,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-20 06:22:30,363 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 76 more)] === [2021-11-20 06:22:30,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:22:30,363 INFO L85 PathProgramCache]: Analyzing trace with hash 817273181, now seen corresponding path program 1 times [2021-11-20 06:22:30,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:22:30,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907358388] [2021-11-20 06:22:30,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:22:30,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:22:30,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:30,681 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:22:30,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:22:30,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907358388] [2021-11-20 06:22:30,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907358388] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:22:30,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394646602] [2021-11-20 06:22:30,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:22:30,682 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:22:30,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:22:30,683 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:22:30,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 06:22:30,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:30,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 44 conjunts are in the unsatisfiable core [2021-11-20 06:22:30,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:22:30,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 06:22:30,884 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 06:22:30,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-20 06:22:30,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 06:22:30,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-20 06:22:31,071 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-20 06:22:31,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 44 [2021-11-20 06:22:31,086 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-11-20 06:22:31,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2021-11-20 06:22:31,187 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-20 06:22:31,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 23 [2021-11-20 06:22:31,298 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-20 06:22:31,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2021-11-20 06:22:33,436 INFO L354 Elim1Store]: treesize reduction 122, result has 19.7 percent of original size [2021-11-20 06:22:33,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 43 [2021-11-20 06:22:34,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2021-11-20 06:22:34,016 INFO L354 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2021-11-20 06:22:34,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 30 [2021-11-20 06:22:34,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:22:34,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:22:34,235 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 06:22:34,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 35 [2021-11-20 06:23:10,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22000 treesize of output 21872 [2021-11-20 06:23:11,835 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-20 06:23:11,835 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:23:11,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-11-20 06:23:11,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093696585] [2021-11-20 06:23:11,836 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-20 06:23:11,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 06:23:11,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:23:11,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 06:23:11,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=1758, Unknown=19, NotChecked=0, Total=1980 [2021-11-20 06:23:11,838 INFO L87 Difference]: Start difference. First operand 240 states and 277 transitions. Second operand has 16 states, 15 states have (on average 2.4) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:23:13,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:23:13,705 INFO L93 Difference]: Finished difference Result 423 states and 478 transitions. [2021-11-20 06:23:13,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-20 06:23:13,706 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.4) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-20 06:23:13,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:23:13,708 INFO L225 Difference]: With dead ends: 423 [2021-11-20 06:23:13,709 INFO L226 Difference]: Without dead ends: 423 [2021-11-20 06:23:13,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1164 ImplicationChecksByTransitivity, 39.9s TimeCoverageRelationStatistics Valid=479, Invalid=3662, Unknown=19, NotChecked=0, Total=4160 [2021-11-20 06:23:13,711 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 656 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 1407 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 1038 SdHoareTripleChecker+Invalid, 1505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:23:13,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [656 Valid, 1038 Invalid, 1505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1407 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-20 06:23:13,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2021-11-20 06:23:13,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 257. [2021-11-20 06:23:13,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 220 states have (on average 1.3681818181818182) internal successors, (301), 256 states have internal predecessors, (301), 0 states have call successors, (0), 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 06:23:13,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 301 transitions. [2021-11-20 06:23:13,719 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 301 transitions. Word has length 36 [2021-11-20 06:23:13,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:23:13,720 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 301 transitions. [2021-11-20 06:23:13,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.4) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:23:13,720 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 301 transitions. [2021-11-20 06:23:13,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-20 06:23:13,721 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:23:13,721 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:23:13,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 06:23:13,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-20 06:23:13,937 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 76 more)] === [2021-11-20 06:23:13,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:23:13,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1419322487, now seen corresponding path program 1 times [2021-11-20 06:23:13,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:23:13,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720781186] [2021-11-20 06:23:13,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:23:13,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:23:13,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:23:13,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:23:13,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:23:13,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720781186] [2021-11-20 06:23:13,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720781186] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:23:13,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:23:13,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 06:23:13,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726060313] [2021-11-20 06:23:14,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:23:14,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:23:14,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:23:14,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:23:14,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:23:14,002 INFO L87 Difference]: Start difference. First operand 257 states and 301 transitions. Second operand has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:23:14,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:23:14,264 INFO L93 Difference]: Finished difference Result 280 states and 325 transitions. [2021-11-20 06:23:14,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:23:14,264 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-20 06:23:14,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:23:14,266 INFO L225 Difference]: With dead ends: 280 [2021-11-20 06:23:14,266 INFO L226 Difference]: Without dead ends: 280 [2021-11-20 06:23:14,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:23:14,267 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 111 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:23:14,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 334 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:23:14,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-11-20 06:23:14,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 264. [2021-11-20 06:23:14,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 227 states have (on average 1.3788546255506609) internal successors, (313), 263 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:23:14,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 313 transitions. [2021-11-20 06:23:14,274 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 313 transitions. Word has length 40 [2021-11-20 06:23:14,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:23:14,275 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 313 transitions. [2021-11-20 06:23:14,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:23:14,275 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 313 transitions. [2021-11-20 06:23:14,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-20 06:23:14,276 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:23:14,276 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:23:14,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-20 06:23:14,276 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 76 more)] === [2021-11-20 06:23:14,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:23:14,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1419322486, now seen corresponding path program 1 times [2021-11-20 06:23:14,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:23:14,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128665507] [2021-11-20 06:23:14,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:23:14,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:23:14,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:23:14,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:23:14,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:23:14,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128665507] [2021-11-20 06:23:14,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128665507] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:23:14,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904240246] [2021-11-20 06:23:14,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:23:14,606 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:23:14,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:23:14,607 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:23:14,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 06:23:14,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:23:14,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-20 06:23:14,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:23:14,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 31 [2021-11-20 06:23:14,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-11-20 06:23:14,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:23:14,908 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:23:14,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904240246] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:23:14,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:23:14,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 19 [2021-11-20 06:23:14,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600549072] [2021-11-20 06:23:14,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:23:14,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:23:14,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:23:14,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:23:14,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2021-11-20 06:23:14,910 INFO L87 Difference]: Start difference. First operand 264 states and 313 transitions. Second operand has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:23:15,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:23:15,221 INFO L93 Difference]: Finished difference Result 276 states and 320 transitions. [2021-11-20 06:23:15,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:23:15,221 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-20 06:23:15,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:23:15,222 INFO L225 Difference]: With dead ends: 276 [2021-11-20 06:23:15,223 INFO L226 Difference]: Without dead ends: 276 [2021-11-20 06:23:15,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2021-11-20 06:23:15,223 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 57 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:23:15,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 417 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 06:23:15,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-11-20 06:23:15,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 262. [2021-11-20 06:23:15,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 227 states have (on average 1.3568281938325992) internal successors, (308), 261 states have internal predecessors, (308), 0 states have call successors, (0), 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 06:23:15,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 308 transitions. [2021-11-20 06:23:15,231 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 308 transitions. Word has length 40 [2021-11-20 06:23:15,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:23:15,231 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 308 transitions. [2021-11-20 06:23:15,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:23:15,232 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 308 transitions. [2021-11-20 06:23:15,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-20 06:23:15,232 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:23:15,232 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:23:15,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 06:23:15,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:23:15,445 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 76 more)] === [2021-11-20 06:23:15,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:23:15,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1458488866, now seen corresponding path program 1 times [2021-11-20 06:23:15,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:23:15,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084599159] [2021-11-20 06:23:15,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:23:15,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:23:15,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:23:15,819 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:23:15,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:23:15,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084599159] [2021-11-20 06:23:15,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084599159] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:23:15,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698729365] [2021-11-20 06:23:15,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:23:15,820 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:23:15,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:23:15,829 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:23:15,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f90479-5e76-4a7b-9e29-9f47ffdc782c/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 06:23:15,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:23:15,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 53 conjunts are in the unsatisfiable core [2021-11-20 06:23:15,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:23:15,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 06:23:16,011 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 06:23:16,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-20 06:23:16,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 06:23:16,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-20 06:23:16,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 06:23:16,212 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-20 06:23:16,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 42 [2021-11-20 06:23:16,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 44 [2021-11-20 06:23:16,477 INFO L354 Elim1Store]: treesize reduction 62, result has 27.1 percent of original size [2021-11-20 06:23:16,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 75 [2021-11-20 06:23:16,506 INFO L354 Elim1Store]: treesize reduction 84, result has 20.0 percent of original size [2021-11-20 06:23:16,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 84 [2021-11-20 06:23:16,711 INFO L354 Elim1Store]: treesize reduction 112, result has 14.5 percent of original size [2021-11-20 06:23:16,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 133 treesize of output 102 [2021-11-20 06:23:16,736 INFO L354 Elim1Store]: treesize reduction 88, result has 17.8 percent of original size [2021-11-20 06:23:16,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 94 treesize of output 82 [2021-11-20 06:23:17,177 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:23:17,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-20 06:23:17,633 INFO L354 Elim1Store]: treesize reduction 86, result has 7.5 percent of original size [2021-11-20 06:23:17,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 65 [2021-11-20 06:23:17,657 INFO L354 Elim1Store]: treesize reduction 58, result has 10.8 percent of original size [2021-11-20 06:23:17,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 38 [2021-11-20 06:23:17,676 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:23:17,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:23:48,556 INFO L354 Elim1Store]: treesize reduction 5388, result has 34.9 percent of original size [2021-11-20 06:23:48,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 12 new quantified variables, introduced 55 case distinctions, treesize of input 2083652 treesize of output 2029766 [2021-11-20 06:24:01,823 WARN L227 SmtUtils]: Spent 13.26s on a formula simplification. DAG size of input: 1236 DAG size of output: 1199 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-20 06:24:47,884 WARN L227 SmtUtils]: Spent 39.56s on a formula simplification. DAG size of input: 1486 DAG size of output: 465 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-20 06:24:47,885 INFO L354 Elim1Store]: treesize reduction 4155, result has 24.6 percent of original size [2021-11-20 06:24:47,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 25 select indices, 25 select index equivalence classes, 0 disjoint index pairs (out of 300 index pairs), introduced 28 new quantified variables, introduced 353 case distinctions, treesize of input 587623847 treesize of output 573813255